Laser Film Digitizer 2905 Service Guide - A.M. X-Ray ... · iii Safety Notices This service guide is intended for service engineers who install or service the Film Digitizer model

Laser Film Digitizer

2905

Service GuidePart No.10309056

Array Corporation

ii

Copyright © 2001 Array Corporation All Rights Reserved

Windows, Windows 95, Windows 98, Windows NT, and Windows 2000 are registered trademarks in

the United States of Microsoft Corporation and each country.

Important :

1 No part of this manual may be copied or reprinted, in whole or in part, without written

permission.

2 The contents of this manual are subject to change without prior notice and without legal

obligation.

3 Caution:

Use of controls or adjustments or performance of procedures other than those specified

herein may result in hazardous radiation exposure.

Version 1E August 2001

iii

Safety Notices

This service guide is intended for service engineers who install or service the Film Digitizer model

2905. Read this manual before you install or service the Digitizer. Only technical service engineers

who are factory trained and authorized by the manufacturer are allowed to service the Digitizer.

Under no circumstances should any other person(s) remove covers or attempt to service this equip-

ment.

There is Helium Neon, (He-Ne) laser of 10mW used as the light source in the film digitizer. Never

look directly at or touch the laser beam.

Safety Precautions

1 Meaning of Signal Words

In this manual, signal words; DANGER, WARNING, CAUTION and NOTE are used regarding safe-

ty and other important instructions. These signal words and their meaning are defined as fol-

lows.

Please understand their meanings clearly before reading this manual.

Laser Safety :

This Model is certified as Class 1 laser product under the U.S. Department of

Health and Human Services (DHHS) Radiation Performance standard according to

the Radiation Control for Health and Safety Act of 1968. This means that the

Model does not produce Hazardous Laser radiation.

CDRH Regulation :

The Center for Devices and Radiological Health (CDRH), for the U.S. Food and

Drug Administration implemented regulations for laser products dated August

2,1976. These regulations apply to laser products manufactured from August

1,1996. Compliance is mandatory for products marked in the United States. The

Label shown in the following illustration indicates compliance with the CDRH reg-

ulations

And must be attached to the products marketed in the United States.

Danger : Indicates an imminently hazardous situation, which, if not avoided, will result in

death, serious injury, serious property damage, or occurrence of fire.

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Warning : Indicates a potentially hazardous situation, which, if not avoided, could result in

death, serious injury, serious property damage, or occurrence of fire.

Caution : Indicates a potentially hazardous situation, which, if not avoided, may result in

minor or moderate injury, property damage or loss of data.

Note : Indicates information of interest to users of this equipment as to exceptional con-

ditions or operating procedures.

2 Safety Precautions

Please observe the following precautions to ensure the safety of service engineers as

well as operators when using this equipment. Only technical service engineers who are

trained and authorized by the manufacturer are allowed to open the covers.

Danger

1 Do not use flammable gasses such as anesthetics or flammable liquids such as ethanol

near this equipment. Such gases may result in an explosion.

2 This equipment is equipped with a laser beam device as a light source. This laser can

cause serious injury when directly exposed to eyes and skin. Avoid exposure to the laser

beam.

3 Do not remove nor cancel any safety interlock switch. Such actions may result in serious

accidents.

4 This equipment contains high voltage components. Take precautions not to touch

those components. Otherwise, high voltages inside this equipment present a safety

hazard.

Warning

1 Avoid contact with the moving components of this equipment. It may result in severe

personal injury.

2 Do not use this equipment near other equipment, which may generate high frequen-

cies, or which may be affected by high frequencies. Doing so may result in malfunction

of this equipment or the other equipment.

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3 Make sure that the main power of this equipment is turned OFF whenever the electric

parts are removed from the unit or attached to the unit. It is strictly prohibited to do

such engineering work without the main power being turned OFF. Doing so may cause

serious injury as well as failure of the electric parts.

4 It is strictly prohibited to modify this equipment in any way, remove any part, install any

part not so described by this manual. Failure to comply will result in voiding warranties

and potentially cause serious harm to service technicians and operators.

Caution

1 Prevent this equipment from experiencing severe shocks. Severe shocks may result in an

incorrect adjustment of optical and mechanical components in this equipment.

2 Do not use equipment such as a humidifier near or in the room where the equipment is

installed. If ignored, it could lead to a high humidity condition and condensation may

occur, which could impact the performance and operation of the equipment

3 Electrostatic charge may cause damage to the electronic circuits of this equipment. Be

cautious when handling or removing electronic parts during technical service.

4 Danger of explosion if the battery is incorrectly replaced. Replace only with the same or

equivalent type recommended by the manufacturer. Dispose of used batteries accord-

ing to the manufacturer's instruction. Observe all local and state standards for the

removal and disposal of batteries.

5 Use of controls, adjustments or performance of procedures other than those specified

in this manual may result in hazardous radiation exposure.

Note

1 Array Corporation assumes no responsibility or liability that results in injury or death if

any unauthorized or properly trained persons attempt to service or modify this equip-

ment in any way.

2 Should any the Warning Labels become illegible or get out of place, please contact your

authorized sales person immediately to have them replaced.

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Description of Labels

Labels on Outer Covers, (Labels for users)

(1)

(2)

(3)

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Labels Inside of the Main Unit, (Labels for maintenance or service)

(4)

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Location of Labels

1) Back Panel

(2)

(1)

(3)

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2) Inside, (Cover open)

(4)

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Foreword

Object reader

This service guide is intended for authorized service engineers who installs or services 2905 laser

film digitizers. Read this guide thoroughly before attempting installation or servicing of this digi-

tizer.

Overview of this guide

Chapter 1 describes the equipment covered in this guide.

Chapter 2 describes the operative and environmental condition of the 2905 laser film digitizer.

Chapter 3 explains the method and procedures for the installation of the digitizer.

Chapter 4 describes necessary procedures for servicing the digitizer.

Chapter 5 describes the method and the procedure to check basic functions of the digitizer.

Chapter 6 shows a checklist for the quality evaluation.

Chapter 7 describes daily and routine maintenance checks.

Related material

Laser Film Digitizer 2905 User's Guide

2905 Scan Suite 3E User's Guide

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Chapter 1 Equipment Covered...............................................................................................1

Chapter 2 Operative and environmental condition .................................................................3

2.1 Installation environment .................................................................................4

2.2 Storage environment ......................................................................................5

2.3 Environmental condition of installation and equipment placement .................6

2.4 Transportation environment ...........................................................................7

2.5 The power requirement ..................................................................................8

Chapter 3 Installing the digitizer ............................................................................................9

3.1 Specifications ...............................................................................................11

3.2 Installation preparation ...............................................................................12

3.3 Unpacking and placement ............................................................................13

3.4 Confirmation of accessories .........................................................................14

3.5 Parts identification ........................................................................................15

3.6 Confirmation of input voltage ......................................................................16

3.7 Connection ..................................................................................................20

3.7.1 Connection of cables ............................................................................21

3.7.2 Setting of SCSI address .........................................................................21

3.8 Basic function check .....................................................................................22

3.8.1 Power on ..............................................................................................22

3.8.2 Installing scan application software .......................................................23

3.8.3 Confirming basic function .....................................................................24

3.9 Confirming the optical system .....................................................................26

3.9.1 Installation of Oscillo tool ......................................................................26

3.9.2 Start and termination of Oscillo tool ......................................................26

3.9.3 Calibration ............................................................................................27

Chapter 4 Services ...............................................................................................................31

4.1 Principle of operation ...................................................................................32

4.2 Principle of optical density measurement ......................................................38

4.3 Functions of each unit ..................................................................................39

Table of Contents

4.3.1 Functions of each circuit board .............................................................39

4.3.2 Functions of film detectors ...................................................................40

4.3.3 Detection of film size ............................................................................41

4.3.4 Calibration ............................................................................................42

4.4 Removing the unit covers etc. .....................................................................43

4.4.1 Removing the top plate .........................................................................43

4.4.2 How to access the electrical components ..............................................44

4.4.3 Checking or replacing the PC boards ....................................................46

4.4.4 Replacing the laser tube ........................................................................51

4.4.5 Replacing the laser power supply ..........................................................52

4.4.6 Confirmation of H-SYNC signal .............................................................53

4.4.7 Clearing films jam .................................................................................55

4.4.8 Checking the sensor movement ............................................................59

4.4.9 Checking the calibration operation .......................................................61

4.4.10 Cleaning the light collection cavity .......................................................62

4.5 Adjustment procedure .................................................................................63

4.5.1 Process when films are misaligned during transport ..............................63

4.5.2 Adjusting the mirror angle ....................................................................65

4.5.3 Checking the optical axis ......................................................................67

4.5.4 Adjusting the horizontal and vertical scanning (adjustment in factory) ...70

4.6 Exchanging the backup battery and setting CMOS .......................................71

4.6.1 Necessary equipment ............................................................................71

4.6.2 Battery exchange ..................................................................................72

4.6.3 Connecting the keyboard and the display .............................................74

4.6.4 Setting of CMOS ...................................................................................79

4.7 Creating and download method of LUT .......................................................83

4.7.1 Installing and deleting the LUT Tool ......................................................83

4.7.2 Starting and exiting the LUT Tool ..........................................................84

4.7.3 Updating the firmware ..........................................................................85

4.7.4 Creating the LUT ..................................................................................88

4.7.5 Checking the LUT .................................................................................97

4.8 Troubleshooting ...........................................................................................98

4.8.1 The POWER LED does not light ............................................................98

4.8.2 The READY LED continues blinking .......................................................98

4.8.3 The READY LED does not light ..............................................................99

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4.8.4 The operation of transportation mechanism does not stop ..................100

4.8.5 Film does not stop at the measurement starting position and is ejected 101

4.8.6 Film is not ejected ...............................................................................109

4.8.7 Film size is not correctly detected ........................................................109

4.8.8 The entire image looks black ...............................................................109

4.8.9 An irregular diagonal line not in the original film is seen in the scanned

image. ................................................................................................109

4.8.10 A stripe is displayed at a right angle from the horizontal scan ............110

4.8.11 The O.D. value of the image sandwiched between two transparent

sheets is incorrect ..............................................................................110

Chapter 5 Confirming basic operations ..............................................................................111

5.1 Checking the basic operation .....................................................................113

5.2 Calibration check .......................................................................................114

5.2.1 Confirmation of state of digitizers .......................................................114

5.2.2 Calibration ..........................................................................................115

5.2.3 Line Scan ............................................................................................118

5.3 Film size detection test ...............................................................................121

Chapter 6 Installation quality check sheet ..........................................................................123

6.1 The number of accessories .........................................................................124

6.2 The digitizer's power supply .......................................................................124

6.3 Basic operation ..........................................................................................125

6.4 Film size detection test ...............................................................................126

Chapter 7 Maintenance manual.........................................................................................127

7.1 Start-of-day and end-of-day checks ............................................................128

7.2 Regular check ............................................................................................128

Appendix Wiring diagram ..................................................................................................129

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1

Chapter 1

Equipment Covered

Chapter 1 Equipment Covered

This service guide is applicable for the 2905 laser film digitizer.

2

3

Chapter 2

Operative and environmental condition

Chapter 2 Operative and environmental condition

2.1 Installation environment

Install the digitizer in the following range of temperature and humidity. When the humidity is low,

the static electricity is easily generated. Take care not to let the digitizer dewy.

Ambient temperature : 15-30C (in operation)

Ambient temperature inclination : 15c/h or less

Relative humidity : 30% - 75% (in operation)

50%-60% (best Condition)

The vibration and the impact : Do not drop and avoid strong shock.

Atmospheric pressure : 70-106kPa

When the humidity is low, static electricity is easily generated. Do not use equipment such as a

humidifier near or in the room where the equipment is installed. If ignored, it could lead to a high

humidity condition and condensation may occur, which could impact the performance and operation

of the equipment

Prevent this equipment from experiencing severe shocks. Severe shocks may result in an incorrect

adjustment of optical and mechanical components in this equipment.

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2.2 Storage environment

Ambient temperature : -10-40C

Ambient temperature inclination : 15C/h or less

Relative humidity : 10%-90% (no condensation)

The vibration and the impact : Do not drop and avoid strong shock.


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2.3 Environmental condition of installation and equipment placement

The 2905 film digitizer is designed for operation in a general office environment. Avoid installing and

operating the digitizer in the following places.

1 Places exposed to corrosive gas.

2 Places where the equipment may come in contact with water.

3 Places with much dust or sand.

4 Places with steam or other chemicals.

5 Places exposed to salt air.

6 Places subject to vibration or impact.

7 Places exposed to direct sunlight or direct heating ducts or elements.

8 Places with strong electromagnetic radiation.

9 Place where direct or indirect light reflects on the display screen of the host computer.

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2.4 Transportation environment

Ambient temperature : -10-50C

Ambient temperature inclination : 15C/h or less

Relative humidity : 10%-90% (no condensation)

The vibration and the impact : 1.1G or less


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2.5 The power requirement

Power voltage : Single phase 100-120Vac xA1.5-3, 200-240Vac xA1.5-3

Power frequency : 50/60Hz

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Chapter 3

Installing the digitizer

Set up the digitizer in the place as described in Chapter 2"Operative and environmental condition" is

filled after confirmation of accessories in the box. Next, connect with the personal computer.

Operate the digitizer with the personal computer after inserting accessory's floppy disk in the per-

sonal computer, and confirm basic movement of the digitizer.

Confirm the connection of the digitizer before connects with the host computer and the personal

computer, and the overall, normal operation. Because neither this personal computer nor the SCSI

interface cable are included in the accessory of the digitizer; The service engineer has to prepare

them. Refer to paragraph 3.2"Installation preparation" for the specification of the personal comput-

er.

Chapter 3 Installing the digitizer

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3.1 Specifications

Model Name Laser Film Digitizer 2905

Laser Source He Ne Laser, (632.8nm)

Film Size inch 14 X 17, 14 X 14, 11 X 14, 10 X 12, 8 X 10, 5 X 12

cm 30 X 40, 30 X 35, 30 X 30, 24 X 30, 24 X 24, 20 X 40,

18 X 43, 18 X 24, 15 X 40

other B4

Interfaces SCSI, SCSI II, TWAIN

Memory 128 Megabytes, (on board)

Pixel Size

Density Resolution 12 bits/pixel

Cycle Time

Density Calibration

Dimensions (W x D x H) 13 x 21 x 30 inch

Weight 45 Kg

Power Source 100~200V, 1.5-3A

200~240V, 1.5-3A

Operating Condition 15~30°C (59-86°F), 30~75% relative humidity (no condensa-

tion)

Preserve Condition -10~40°C (14~104°F), 10~90% RH (no condensation)

Transport Condition -10~50°C (14~122°F), 10~90% RH (no condensation)

Electromagnetic Resistance

Heat Generation

Applied Standard

Accessories 2905 User's Guide, Software Installation Disk, software User's

Guide, Power Cable

Optional Equipment

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3.2 Installation preparation

(1) Standard work time

Installation (Chapter 3): one hour by two people

Basic function check (Chapter 5) and filling out the quality check sheet (Chapter 6): one hour by one

person

(2) Standard tool and measurement machine

Plus driver (for 2mm, 3mm, and 4mm)

Hex wrench (for 3mm and 4mm)

Voltmeter

(3) PC for function check

Windows 95, Windows 98, Windows ME, Windows NT 4.0, or Windows 2000 Operating System

(In case of Windows NT or Windows 2000, ASPI manager should be installed. For the detail of

ASPI manager, ask SCSI card manufacturer for the availability or see Web site of the card manu-

facturer)

3.5'' Floppy disk drive (1.44MB)

VGA 16bit-color or better display environment

18MB or more hard drive capacity

SCSI host adapter

SCSI interface cable(Digitizer SCSI Connector: Full pitch 50p)

SCSI terminator

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3.3 Unpacking and placement

Caution : Two people should perform unpacking and moving because the weight of the

digitizer is over 45kg.

Use care to avoid any unnecessary shock when unpacking and moving the digitizer, as the optical

system and the film transportation mechanism in the digitizer are adjusted precisely.

1 Check of the packing material

Confirm there are no signs of damage to the packing material. If any signs are found, keep the pack-

ing material, and contact the distributor of the digitizer.

2 Unpacking

Open the package and remove the digitizer from the packing material respectively using two people

by gripping both sides of the equipment.

3 Placing the digitizer

Using two people, carry the digitizer to the area where it will placed for operation. Ensure clearance

from the wall of at least 20 cm and satisfy the condition described in Chapter 2

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3.4 Confirmation of accessories

Confirm the following accessory is bundled. If some parts are missing or damaged, contact the dis-

tributor.

14

1 Power cable

2 2905 Laser film digitizer User's Guide

3 "2905 Scan Suite" (Scan application software) installation disk.

4 2905 Scan Suite User's Guide

Figure 3.1 Laser film digitizer and accessories

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3.5 Parts identification

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Ready Switch

POWER LED

READY LED

Eject Switch

Film Guide

Film Entrance Film Table

Figure 3.2 Name of parts (front)

SCSI Connector

Breaker

AC IN(inlet)

Figure 3.3 Name of parts (back)

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3.6 Confirmation of input voltage

Confirm whether the setting of input voltage is correct before turning on the power supply.

1 Confirm SCSI cable and power cable are disconnected from the digitizer main body.

2 Remove five plus-screws on the back and four 4mm-hexagon socket screws on the bot-

tom.

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Figure 3.4

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3 As shown in Figure 3.5, slide out the electronics unit slowly taking care with internal

cables.

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Figure 3.5


4 There is a voltage switch in the position shown in Figure 3.6. Confirm the setting of the

voltage is correct. If not, switch it to the correct voltage.

The following two voltages are supported:

100-120Vac xA1.5-3

200-240Vac xA1.5-3

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Voltage Switch

Figure 3.6

Figure 3.7 2 varieties of the voltage setting


5 Put back the electronics unit, and secure all removed screws.

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3.7 Connection

Connect SCSI cable with the digitizer and the PC and set the SCSI address.

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Caution : Confirm the power switch of digitizer and PC are both turned off before connec-

tion.

Figure 3.8 Example of connection between digitizer and PC

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3.7.1 Connection of cables

1 Connecting power cable

Connect power cable to the digitizer and power outlet.

2 Connecting SCSI cable

Connect SCSI cable between the digitizer and the PC.

3.7.2 Setting of SCSI address

The SCSI address is factory set to position 5. Change the set address number with the SCSI address

switch of the digitizer when it is necessary.

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3.8 Basic function check

Install "2905 Scan Suite" (Scan application software) onto the PC. Once the software is installed,

open the application to ensure communication between the host PC and digitizer is working correct-

ly.

3.8.1 Power on

Turn on the power of the digitizer first, and then turn on the PC.

(When shutting the system down, the power to the PC must be turned off first, and then the power-

to the digitizer)

1 Digitizer power on

Turn on the power breaker located on the back of the digitizer and then turn on the power switch

located on the top of the unit.

Confirm the POWER LED is on, and in a few moments, the READY LED is also turned on. POWER

LED remains illuminated while the digitizer power is on.

READY LED is on only when the following five conditions are satisfied.

• The internal polygon mirror must rotate by a specified cycle.

• H-SYNC signal (signal which decides horizontal scanning timing) is generated correctly.

• Calibration is performed and the adjustment of high voltage to the photomultiplier is

normal.

• No film has been inserted in the digitizer.

• Data entry DMA function of sub-CPU is working normally.

2 PC Power on

Turn on the power of the PC.

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3.8.2 Installing scan application software

Perform the following steps to install the scan application software into the PC.

1 Start the personal computer.

2 Insert the installation disk of "2905 Scan Suite" (Scan application software) in the floppy

disk drive of the PC.

3 Install software following the user's guide "2905 Scan Suite"

4 Remove the installation disk from the drive.

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3.8.3 Confirming basic function

Perform the following steps to confirm the basic function of the digitizer.

1 Start of "2905 Scan Suite"

Follow the instructions in "2905 Scan Suite User's Guide" to start Scan application program. Press

"New Scan" to display the scan window.

2 Setting a film

Set a film into the digitizer. The digitizer detects the film and draws the film into the start position.

READY LED should be off at this time.

3 Confirm film ejection

Press EJECT button to eject film.

The transportation mechanism will start, and the film will be transported.

Press EJECT button again to stop ejecting the film.

Press EJECT once more to continue ejecting the film.

Confirm the film is transported smoothly without any unusual noise from the transportation mecha-

nism.

4 Scan

Set a film again and confirm the film is drawn and stops at the start position.

Click "Scan" button in the scan window to start scanning. The scanned image is displayed in the

mini-screen in the scan window.

When the scan is finished, the film is ejected automatically. The READY LED turns on.

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5 Display of the film image

Click "Exit" button to display the image with the viewer. Use the viewer function to confirm the

image is scanned successfully.

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3.9 Confirming the optical system

Confirm the optical system of the digitizer using the service software called "Oscillo tool" that dis-

plays the graph of the calibration data.

3.9.1 Installation of Oscillo tool

Perform the following steps to install the "Oscillo tool".

1 Insert the installation disk of the Oscillo tool into the floppy disk drive of the PC.

2 Copy the folder "Oscillo" located on the floppy disk into an arbitrary place on the PC's

hard disk.

3 Remove the floppy disk from the drive.

3.9.2 Start and termination of Oscillo tool

Double-click the file "Oscillo.exe" in the "Oscillo" folder on the hard drive to start "Oscillo tool".

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Figure 3.9 The main window of Oscillo tool

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To end "Oscillo tool", select "File-Exit" in the menu of the main window of "Oscillo tool".

3.9.3 Calibration

1 Calibration

Set Pitch, Density range, and Scanning Mode in the Calibration group box in the main window as

Figure. 3.10. Click "Calibration" button to start calibration.

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Figure 3.10 Calibration group box

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2 Calibration data graph

Click "Read" button to display the calibration data graph (Figure 3.11)

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Calibration test data displayed in graphical representation graph

Figure 3.11 Calibration data graph


To change graph scales, change the values in the combo-boxes "x-min", "x-max", "y-min", "y-

max" under the graph.

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Figure 3.12 Graph scale group box


If the graph is generally continuous without any significant peaks shown as Figure 3.11, the calibra-

tion data are good.

If the graph is like Figure 3.13, there may be dust in the cavity. Remove dust using compressed air

(see section 4.4.10 "Cleaning the light correction cavity").

If the graph is like Figure 3 14, there may be a problem in the light axis. Adjust the angle of the mir-

ror (see section 4.5.2 "Adjusting the mirror angle").

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Figure 3.13 Calibration data graph, suggesting dust in the cavity

Figure 3.14 Calibration data graph, suggesting bad light axis

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Chapter 4

Services

Chapter 4 Services

4.1 Principle of operation

The digitizer works by control command from the host computer. This control command is input via

SCSI cable which connects the digitizer with the host computer.

32

Digitizer

Host computer

Scan unit

Laser scanning unit

Safety circuit

Film transportation part

Control unit

Sub CPU unit

Film-size detector

Optical detector

A to D converter

Main CPU unit

Data memoryunit

Interface unit

Power supply unit

SCSI2 cable

DC POWER

CNT PCI bus

Figure 4.1 System block diagram

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Chapter 4 Services

1 The laser beam emitted from the laser tube changes path/direction when reflecting off

the mirror, and is directed into the beam expander.

2 The beam expander reduces the extension angle of the laser beam.

3 Polygon mirror with eight facets scans the laser beam. The rotation speed of the polygon

mirror varies depending on the pixel spacing and scanning mode specified by the host

command.

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Figure 4.2 Optical system

Chapter 4 Services

4 The f-theta lens converts the constant angular velocity scan to constant linear velocity.

5 By scanning this way, the image information of the film is converted to the intensity of

the transmitted laser beam.

6 The laser beam transmitted through the film passes through a slit, and enters into the

cavity.

The surface of the cavity is painted using special paint that reflects the light non-direc-

tionally at high reflectance rate.

In the cavity, the laser beam is reflected and diffused and passes through a light guide

and enters the photomultiplier.

The photomultiplier changes the intensity of the laser beam to electrical signals.

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Figure 4.3 Function of f-theta lens

Chapter 4 Services

7 As shown in Figure 4.4, the film is transported in the direction of the arrow by the film

transportation mechanism using a five-phase pulse motor.

Horizontal scanning with polygon mirror and vertical scanning with film transportation

encompasses the scan of the whole film.

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ScanningSub-scanning

Figure 4.4 Scanning and sub-scanning

Chapter 4 Services

8 The signal is converted to the log-scale with the log-amplifier to represent optical density.

9 A to D converter converts the analog signal to digital signal of 12 bits.

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Mirror 4

Mirror 3

Host computer

I/F

Difference detection

Line buffer

SCSI cable

Calibration Buffer

Analog to digital conversion machine

Log amplifier

Photo multipliers

Light guide

CavityPhotometry part

Film

Roller

fθlens

Beam expander

Polygon mirror

Laser oscillator

Image memory

Mirror 1

Figure 4.5 Signal flow

Mirror 2

Chapter 4 Services

10 The digital data are written in the line buffer that keeps data for one scanline.

The line data in the line buffer is compared with the data in the calibration buffer that

keeps the one-line data acquired when the film does not exist.

11 The difference of line buffer and calibration buffer is calculated at each pixel position and

written into the difference buffer that represents the primitive pixel data at each pixel

position.

12 The pixel data in the difference buffer is converted to the final pixel data with look-up

tables (LUT).

The digitizer is originally equipped with a LUT to get the best optical density correction,

but arbitrary LUT can be downloaded from the host computer using control command.

The contents of the LUT are kept until the next download or the power-off.

When no LUT is downloaded, the original LUT is used for the pixel data conversion.

13 When the digitizer receives a data transfer command from the host computer, it sends

the pixel data of specified size to the host computer via SCSI interface.

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Chapter 4 Services

4.2 Principle of optical density measurement

The principle of the optical density measurement of the film is as follows.

1 D1=-log(I1/I0) and D2=-log(I2/I0).

D1 represents the pixel data measured with the film

D2 represents the pixel data measured without the film

I0 represents standard light intensity at the photomultiplier

I1 represents the light intensity with the film

I2 represents the light intensity without the film

2 Optical density of the pixel D3 is calculated from these two values as follows:

D3=D2-D1=-log(I2/I1)

3 Therefore, the difference of the pixel data in the line buffer and the pixel data in the cali-

bration buffer represents the optical density at each pixel position.

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Chapter 4 Services

4.3 Functions of each unit

4.3.1 Functions of each circuit board

1 Motherboard

PC-AT compatible main board, on which other boards are mounted.

• Main CPU

• 128MB memory

• Up to three PCI-bus cards or four ISA-bus cards

2 ADC board

Converts analog signal from the log-amplifier to digital data

• 12-bit ADC

• Range switch for the optical density range

• Control of the high voltage for photomultiplier

3 Flash memory card

• 7.95MB

• OS (MS-DOS) boot

• Firmware for main CPU and sub CPU

• Setting info

• Digitizer individual metric info

4 Sub-CPU board

Controls the mechanics of the digitizer and acquires the scan data.

• Acquires one-line data from ADC

• Performs pixel data averaging and subtraction

• Transfers pixel data to main memory

• Controls the rotation speed of polygon mirror

• Controls mechanics such as film transportation

• Detects the status of all switches and detectors

5 SCSI interface board

Interface for the host computer

• Fast SCSI-2 (10MB/s)

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4.3.2 Functions of film detectors

Figure 4.6 shows the location of six film detectors.

Detector 1 and detector 2 are used to detect film size.

Detector 1: Detects the film whose vertical length is 40 cm or longer is set in the digitizer.

Detector 2: Detects the film whose vertical length is less than 35.5 cm is set in the digitiz-

er.

Detector 3: Detects the film is inserted to the digitizer. When this detector is on, the digi-

tizer starts to rotate the rollers to draw the film to the start position.

Detector 4: Located at the first roller. Detects the film is on the roller.

Detector 5: Located at the fourth roller. When the film is set to the digitizer, the digitizer

draws the film and stops when the film is detected.

The digitizer determines the film width by scanning one line of the film at this

position.

Then the digitizer rotates the roller to the opposite direction, acquiring scan

data and stops when the scan data shows the end of the film.

Detector 6: Located at the U-turn guide, detects the film is in the U-turn guide.

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Detector 6

Detector 5

Detector 4

Detector 3 Detector 2 Detector 1

Figure 4.6 Arrangement of film detector

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4.3.3 Detection of film size

The digitizer supports the following film sizes.

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17 inch *14 inch (Portrait)

14 inch *14 inch

14 inch *11 inch (Portrait, Landscape)

12 inch * 10 inch (Portrait, Landscape)


5 inch * 12-inch (Portrait)

B4 (Portrait, Landscape)

18cm*43cm(Portrait)

30cm*40cm (Portrait)



30cm*35cm (Portrait, Landscape)

30cm*30cm



24cm*24cm


When a film is set into the digitizer, the digitizer draws the film into the position of detector 5.

At this time, the digitizer scans one line and gets the horizontal length of the film with the scan data.

The digitizer then resets the film back to the start position of the scan.

When the film is at this position, the digitizer gets the vertical film size using detector 1 and 2.

Horizontal film size : The digitizer draws the film with the rollers until the detector

5 turns on.

The digitizer calculates the horizontal width of the film from

the scan data, pixel spacing, and correction constants.

Vertical film size : When the film is at the start position of scan, the digitizer

determines the vertical size of the film using the status of

detector 1 and 2.

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4.3.4 Calibration

To get proper scan data, the digitizer adjusts the high voltage of the photomultiplier to know the

level of density 0.

This is called "Calibration."

The digitizer automatically performs the calibration each time before the scanning a film, and then

stores the averaged scan data when the film is not in the scan position of the calibration buffer.

The calibration is performed as follows:

1 The digitizer sets the high voltage of the photomultiplier to the initial value.

2 The digitizer scans the one line and sees if the pixel data at the center of the scan is suit-

able and register zero density.

3 If not, increase the high voltage by a certain step and repeat 2

The digitizer performs the calibration each time before the scan. This prevents any influence of of

laser intensity changes, analog circuit etc.

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4.4 Removing the unit covers etc.

Danger : Turn off the power switch and the circuit breaker whenever you carry out opera-

tions such as removing the cover or servicing a unit.

4.4.1 Removing the top plate

You need to remove the top plate when checking the transportation mechanism or the laser's scan-

ning operation, or when cleaning the mirror.

Note : Because the interlock mechanism is installed on the digitizer, if the cover is

removed with the power and the circuit breaker switched on, laser beam radiation

and film transportation stop automatically.

Danger : The optical path of the laser beam can be observed when necessary by releasing

the interlock mechanism. However, never look directly at or touch the beam, as

serious injury could occur.

1 Detach a total five 4mm plus screws, three on the back of the top plate, one on the bot-

tom of the right side, and one on the bottom of the left side (Figure 4.7).

2 Carefully lift and remove the top plate from the main body. Now, the optical system and

the transportation unit can be checked.

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Figure 4.7 Film digitizer from the back (angled)

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4.4.2 How to access the electrical components

1 Remove the SCSI and power cables before pulling out the electrical component tray.

2 Pull out the electrical component tray by removing five plus screws on the back and four

4mm hexagon holed bolts on the bottom (Figure 4.8a).

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Figure 4.8 a

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3 Carefully pull out the electrical component tray. Take extra care not to stretch the cables

inside. The result looks like Figure 4.8 b.

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Figure 4.8 b

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4.4.3 Checking or replacing the PC boards

1 Remove four 3mm hexagon holed bolts, marked by arrows in Figure 4.9 (the top view of

the electrical component tray pulled out), to remove Shield Cover 1.

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Shield cover 2

Shield cover 1

Shield cover 3

Figure 4.9 a

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2 Remove four 3mm hexagon holed bolts, marked by arrows in Figure 4.9b, to remove

Shield Cover 2.

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Shield cover 2

Shield cover 3

Figure 4.9 b

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3 Remove the 3mm hexagon holed bolt marked by an arrow in Figure 4.9c, to remove the

DC constant-voltage supply.

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Direct current constant-voltage power supply

Figure 4.9 c

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4 To replace the PC board, first remove the connector attached to the board, then remove

the 3mm hexagon holed bolt marked by an arrow in Figure 4.9d, and carefully pull up

the board.

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Figure 4.9 d

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5 To replace the motherboard, remove all connectors connected to the motherboard, and

remove five screws marked by arrows in Figure 4.9e.

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Figure 4.9 e

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4.4.4 Replacing the laser tube

Danger : Take extra care on handling the connector that connects the laser tube and the

power supply. This connector has high voltage and improper handling could result

in serious injury or death.

Caution : Do not touch the mirror on the left of the laser tube. If touched, wipe it clean

with alcohol-dipped cotton buds etc.

After replacing the laser tube, bundle the cables together as before. Do not allow

the cables to cross the optical path of the laser beam.

The holder that secures the laser tube to the main body (part of the plinth of the

holder removed this time) is specified as an important connection. Under no cir-

cumstances should anyone move the holder except an engineer in charge from

our factory.

1 Remove two hexagon holed bolts that secure the connector holder (the holder that

secures the connection between the laser tube to the power supply) as shown in Figure

4.10.

2 Separate the connector.

3 Remove two hexagon holed bolts on the right and left holders that secure the laser tube

(total 4 bolts removed).

4 Replace the laser tube.

Mirror

Laser tube holderLaser power supply

Laser tube holder

Connector for the laser tube Connector holder Laser tube

Figure 4.10 Layout of the laser tube and the supply for laser

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4.4.5 Replacing the laser power supply

1 Separate the connector from the power supply to the laser tube, as in section 4.4.4.

2 Remove the nylon connector of the DC12V input and the connector of the interlock

switch.

3 Remove two 3mm plus screws which secures the power supply for the laser.

4 Replace the power supply for the laser.

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4.4.6 Confirmation of H-SYNC signal

H-SYNC signal is a signal that shows the start of horizontal scanning. It is extremely important since

the digitizer synchronizes its process with this signal.

The position of the H-SYNC board is shown in Figure 4.12, and its waveform in Figure 4.11.

Danger : Because the interlock mechanism is installed on the digitizer, if the cover is

removed with the power and the circuit breaker switched on, laser beam radiation

and film transportation stop automatically.

Danger : The optical path of the laser beam can be observed when necessary by releasing

the interlock mechanism. However, never look directly at or touch the beam, as

serious injury could occur.

1 Follow the procedure in section 4.4.1 to remove the top plate.

2 The interlock mechanism works and laser radiation stops. Disable the interlock mecha-

nism.

3 Connect the oscilloscope to the test pins

Two test pins stick out on the soldering face of the H-SYNC board. The pin with a blue

insulation bead is the test pin for the H-SYNC signal. The one with the black bead is for

grounding purpose. Connect the probe of the oscilloscope with this test pin.

As in Figure 4.11, the H-SYNC signal has its base on about -1.5V, and shakes from +15V

to -15V.

0v 0v

5v, 5μs DIV 5v, 0.5ｍs DIV

Figure 4.11 H-SYNC signal waveform

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H-SYNC board Test pin

Figure 4.12 Position of the H-SYNC board

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4.4.7 Clearing films jam

This digitizer is designed to read films of the following sizes.


14 inch *14 inch






18cm*43cm(Portrait)





30cm*30cm



24cm*24cm


If a film of a size other than those listed above or a custom-processed film is used, the film might jam

or drop under the transportation roller. In this case, take out the film as follows:

Caution : The transportation unit has a timing pulley sticking out from the bottom. When

removing the transportation unit from the photometry unit and placing it on a

suitable resting surface etc., place it on two stands of 30mm or higher to avoid

the weight load resting on the pulley.

1 Follow the procedure in section 4.4.1 to detach the top plate.

2 Remove one connector and two nylon connectors that connect the photometry unit to

the transportation unit on the left of the digitizer.

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3 Remove total six 4mm hexagon holed bolts which are showed on Figure 4.13a and

4.13b.

Caution : In order to reassemble correctly, before remove transportation unit, please make a

line between transportation unit and photometry unit.

Figure 4.13 a The position of the bolts securing the transportation unit to the photometry unit - left view

Figure 4.13 b The position of the bolts securing the transportation unit to the photometry unit - right view

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4 As shown in Figure 4.14, remove two 4mm hexagon holed bolts on the left and two on

the right that secures the guide board to the transportation unit.

Any film dropped on the guide board underneath the roller can be removed.

Guide board

Figure 4.14 The position of the bolts that secure the guide board to the transportation unit

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5 Remove two 4mm hexagon holed bolts on the left and two on the right that secures the

U-turn guides to the left and right sideboards of the transportation unit. Then remove

Sensor 6 and its actuator.

Now the film in the U-turn guide can be removed.

To secure the transportation unit to the photometry unit, reverse the above steps.

Afterwards, adjust the foremost edge of the film set on the photometry unit to be paral-

lel to the main scanner of the transportation unit.

U-turn guide

Figure 4.15 Securing bolt of the U-turn guide

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4.4.8 Checking the sensor movement

A test program is provided to check that the six sensors shown in Figure 4.6 work properly. You can

feed the film inside the digitizer, and check whether each sensor can detect the film or not on the

display of the PC which executes the Oscillo tool.

1 Connection to the PC

Connect the digitizer to the PC, follow the steps in section 3.8.3 "Confirming basic func-

tion" and section 3.9 "Confirming the optical system".

Start the Oscillo tool.

2 Check the Switch group box

Make sure the five check boxes in the Switch group box in the main window are not

checked.

Figure 4.16 Main window of Oscillo tool

Switch group box

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The correspondence of each check box and the sensor is as follows.

SW17 : Checked when there is a film in the position of detector 1.

SW12 : Checked when there is a film in the position of detector 2.

Filmin : Checked when there is a film in the position of detector 3.

Convin : Checked when there is a film in the position of detector 5.

Convout : Checked when there is a film in the position of detector 6.

Sensor 6

Sensor 5

Sensor 4

Sensor 3 Sensor 2 Sensor 1

Figure 4.17 Sensor layout

3 Set the film

Set the film in the digitizer and press the EJECT button. The film passes through the digi-

tizer and is ejected from the film outlet.

4 Check the sensors' operation

The operation of each sensor can be checked by the position of the film that passes

through the digitizer, and the colors of the circles drawn on the display.

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4.4.9 Checking the calibration operation

As explained in section 4.3.4, each time the Start Scan command is input from the host computer,

the digitizer executes calibration and adjusts high voltage applied to the photo multipliers, prior to

the read operation of the film.

To check if calibration is executed properly, use the Oscillo tool to send the calibration command to

the digitizer and check the waveform on the main window of the Oscillo tool (See 3.9"Confirming

the optical system").

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4.4.10 Cleaning the light collection cavity

If the digitizer is continually used for a long time, dust settles inside the cavity and affects the data.

To avoid this, dust in the cavity must be removed.

As explained in Figure 4-18, use compressed air to blow off the dust and suck it with a vacuum

cleaner. If this is insufficient to remove the dust, attach a nozzle to the vacuum and carefully insert it

inside the cavity and remove the remaining dust. Do not allow the tip of the nozzle to touch the

inner surface of the light collection cavity, as this may damage the surface.

Suck nozzle of the vacuum cleaner

Compressed Air

Figure 4.18 Cleaning the cavity

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4.5 Adjustment procedure

4.5.1 Process when films are misaligned during transport

When attaching the transportation unit to the photometry unit, if the main scanning direction of the

transportation unit and the sub-scanning direction of the photometry unit do not form a right angle,

the films will be transported out of correct alignment. When this happens, adjust as follows:

Caution : Laser must be radiated during this adjustment. Make sure that you do not touch

or look directly into the laser beam.

Danger : The power of the digitizer's built-in laser is 10mW. The optical path of the laser

beam can be observed when necessary by releasing the interlock mechanism.

However, never look directly at or touch the beam, as serious injury could occur.

Note : Use an unnecessary film for this adjustment, because it might scratch the film.

1 Follow the procedure in section 4.4.1 to remove the top plate.

2 The interlock mechanism works and the laser radiation stops. Disable the interlock mech-

anism.

3 Loosen eight 4mm hexagon holed bolts securing the transportation unit to the photome-

try unit. Now, the installation angle of the transportation unit can be adjusted.

4 Set the film along the film guide and place it against the first roller.

5 Rotate the volume marked "STOP" on the bottom left of the driver board on the pulse

motor shown in Figure 4.19, counter-clockwise to the stop position. As a result, the lock

function (activated when the pulse motor stopped) is disabled.

6 Turn the pulley secured to the pulse motor axis carefully by hand to pull the film inside

the transportation unit. Move the film to the position where the tip of the film touches

the main scanning line.

7 Move the transportation unit slowly and carefully to match the main scanning line and

the front edge of the film.

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Pulley STOP

Driver board for the pulse motor

Figure 4.19 Layout diagram of the pulley and the driver board

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4.5.2 Adjusting the mirror angle

As explained in Figure 4.20, the laser beam is reflected on Mirror 3 and Mirror 4 and passed through

the center of the slit to scan the film. The laser beam, after it penetrates the film, is designed to hit

the photometry unit.

When the laser does not pass the center of the slit, adjust the angle of Mirror 4 as follows. When

performing this adjustment, make sure that you do not look directly at or touch the laser beam.

Furthermore, do not touch the mirror surface when moving the mirror.

Loosen the bolts left and right of the holder for Mirror 4, and adjust the angle of Mirror 4 to make

the main scanning line align to the center of the slit.

Caution : When adjusting the angle of the mirror, hold it with both hands. Do not touch

the surface. Touching the mirror may cause it to corrode in the future.

Mirror 4

Mirror 3

Slit 1Slit 2

Film

Photo multipliersLight guide

Cavity

Kodak 6080 application

Driving Roller

Figure 4.20 Laser Path (on normal operation)

Laser beam

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1 Follow the procedure in section 4.4.1 to detach the top plate.


anism.

3 Loosen the two 4mm hexagon hold bolts each on the left and right securing the holder

for Mirror 4 to the sideboard.

4 Carefully look near Mirror 4 and adjust its angle so the laser beam passes the center of

the slit.

Grab the holder of Mirror 4 and adjust the angle without touching its surface.

Caution : If you touch the mirror surface and the image is affected, clean off the mirror with

alcohol-soaked gauze lightly without putting pressure on the mirror surface.

Mirror 4

Figure 4.21 Layout of Mirror 4 and driver board for the pulse motor

Hexagon holed bolt

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4.5.3 Checking the optical axis

When the top board is removed (see section 4.4 for details), you can see a small mirror on the center

of the circle mark on Figure 4.22.

Figure 4.22 The position of the H-SYNC mirror

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When you see the mirror from the direction shown on Figure 4.23, the sensor on the H-SYNC board

is reflected in the mirror (Figure 4.24 is an enlarged diagram). The optical axis is OK if the center of

the sensor is scanned by the laser beam. If the laser beam is off the receiving part of the sensor,

adjust the angle of the mirror by the steps explained in section 4.5.2. If the deviance is small, adjust

only Mirror 4.

Figure 4.23 The position and angle to see the H-SYNC sensor and laser beam reflected on the mirror

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MirrorLaser beam

The sensor's detecting unit

Figure 4.24 The enlarged diagram of the H-SYNC sensor and laser beam reflected on the mirror

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4.5.4 Adjusting the horizontal and vertical scanning (adjustment in factory)

This digitizer obtains and records a correction factor from the ratio of the distance measured with

the measuring machine and the distance measured with the digitizer. This correction factor is multi-

plied by the measured value of the digitizer to calculate the distance.

In this adjustment, a scan precision test film is prepared in the following steps:

• The interval of the line in the main scanning direction and the sub scanning direction is

measured with a measuring instrument.

• This measurement value is recorded on flash memory card.

• The test program is executed. The digitizer reads the entire surface of the test film.

• The correction factor is calculated and recorded on the flash memory, from the pixel

spacing between the lines and the spacing measured by the digitizer and the values from

the measuring instrument.

• To measure the distance between the lines on another film, multiply the value from the

digitizer and the correction factor to measure the true distance.

The correction factor for each pixel spacing is recorded on a flash memory card, so when the card is

replaced, the factors must be re-measured.

1 Connect to the PC

Connect the digitizer and the PC according to section 3.7 "Connection", and start the

test program.

2 Select in the test program

Select "Setting of the correction factor" in the test program.

3 Set the film

Set the film for the scanning accuracy test in the digitizer.

4 Click the START button

Click the "START" button of the test program.

The digitizer reads the film. Then the correction factor is calculated from the value meas-

ured by the digitizer and the value by the measuring instrument (recorded on the flash

memory card). Finally, the correction factor is overwritten on the flash memory card.

If you prefer not to use the test film and use the film with no measuring instrument data

recorded on the flash memory card, you must enter the values that correspond to the

measurement machine values manually from the keyboard.

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4.6 Exchanging the backup battery and setting CMOS

4.6.1 Necessary equipment

Prepare the following items before starting this procedure.

1 Keyboard (PS/2 not acceptable)

2 PCI Video board that support VGA display

3 Monitor that support VGA display

4 Battery for exchange (CR2032)

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4.6.2 Battery exchange

Follow the procedure in section 4.4 "Removing the unit covers etc." to uncover the battery (Figure

4.25, 4.26).

Battery

Figure 4.25 Position of the battery on the motherboard

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Push out the place pointed by an arrow on Figure 4.26a with a sharp instrument to make the result

look like Figure 4.26b, to pick up the battery with your finger.

After removing the old battery, insert the new battery as shown in Figure 4.26b to make the result

look like 4.26a.

When battery exchange is completed, check the voltage using a battery checker. Normally the volt-

age will be about 3.2 V.

a b

Figure 4.26 How to remove the battery

Note : The voltage is about 3.2V immediately after supplying a new battery, but when

used over a day, the voltage usually remains at approximately 3V.

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4.6.3 Connecting the keyboard and the display

1 The connector of the keyboard is under the direct current constant-voltage power supply

part (Figure 4.27). Remove four hexagon holed bolts, and lift and move the direct current

constant-voltage power supply part (Figure 4.28) to access the connector.

Direct current constant-voltage power supply

Figure 4.27 Remove the bolts securing the direct current constant-voltage power supply

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Keyboard connector

Figure 4.28 Make the keyboard connector usable

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2 Remove one 3mm hexagon holed bolt as shown in Figure 4.29 and remove the shield

bracket. Insert a video board in the PCI bus as shown in Figure 4.30.

Figure 4.29 Remove the shield bracket

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Video board

Figure 4.30 Insert a video board in PCI bus

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3 Connect the keyboard and display connectors as shown in Figure 4.31.

Keyboard

Display

Figure 4.31 Connecting the keyboard and the display

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4.6.4 Setting of CMOS

CMOS is a battery-backed-up SRAM that stores the various setting characteristics of the BIOS.

(1) Start of CMOS setting program

Turn on the power supply of the digitizer after confirming that the electronics unit and all connec-

tions are safe. Push the "Delete" key on the keyboard when the memory test is completed. CMOS

setting program starts.

(2) About each screen

1 Initial screen

The following settings exist. Italicized items need to be set or confirmed.

STANDARD CMOS SETUP

BIOS FEATURES SETUP

CHIPSET FEATURES SETUP

POWER MANAGEMENT SETUP

PNP/PCI CONFIGURATION

LOAD SETUP DEFAULTS

INTEGRATED PERIPHERALS

SUPERVISOR PASSWORD

USER PASSWORD

IDE HDD AUTO DETECTION

HDD LOW LEVEL FORMAT

SAVE & EXIT SETUP

EXIT WITHOUT SAVING

Some settings on each screen are influenced by other settings. For example, if one set-

ting is changed, another setting might appear, or a setting may disappear.

Press the "ESC" key to return from the setting screen of the each item to the initial

screen.

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2 STANDARD CMOS SETUP

Date(mm:dd:yy) : xx, xx xx xxxx -> Set the date

Time(hh:mm:ss) : xx : xx : xx -> Set the time

HARD DISK

Primary Master : None

Primary Slave : None

Secondary Master : None

Secondary Slave : None

Drive A : None

Drive B : None

Video : EGA/VGA

Halt On : No Errors

3 BIOS FEATURES SETUP

Value Warning : Disabled Video Bios Shadow : Enabled

CPU Internal Cache : Enabled C8000-CBFFF Shadow : Disabled

External Cache : Enabled CC000-CFFFF Shadow : Disabled

Quick Power On Self Test : Enabled D0000-D3FFF Shadow : Disabled

Boot Sequence : C,A,SCSI D4000-D7FFF Shadow : Disabled

Swap Floppy Drive : Disabled D8000-DBFFF Shadow : Disabled

DC000-DFFFF Shadow : Disabled

Boot Up Numlock Status : On

Boot Up System Speed : High

Typematic Rate Setting : Disabled

Typematic Rate (Chars/Sec) : 6

Typematic Delay (Msec) : 250

Security Option : Setup

PS/2 mouse function Control : Enabled

PCI/VGA Palette Snoop : Disabled

Assign IRQ For VGA : Enabled

OS Select for DRAM > 64 MB : Non-OS2

Report No. FDD For WIN95 : No

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4 CHIPSET FEATURES SETUP

Auto Configuration : Enabled

DRAM Timing : 60ns

DRAM Leadoff Timing : 10/6/3

DRAM Read Burst (EDO/FP) : X222/X333

DRAM Write Burst Timing : X222

Fast EDO Lead Off : Enabled

Refresh RAS# Assertion : 4 Clks

Fast RAS to CAS Delay : 3

Fast MA to RAS# Delay : 2 Clks

SDRAM (CAS Lat/RAS-to-CAS) : 3/3

SDRAM Speculative Read : Disabled

System BIOS Cacheable : Disabled

Vide BIOS Cacheable : Disabled

8 Bit I/O Recovery Time : 1

16 Bit I/O Recovery Time : 2

Memory Hole At 15M-16M : Disabled

PCI Passive Release : Disabled

5 POWER MANAGEMENT SETUP

Power Management : Disabled

Other settings are optional.

6 PNP/PCI CONFIGURATION SETUP

PNP OS Installed : No PCI ISE IRQ Map To : PCI-AUTO

Resources Controlled By : Auto Primary IDE INT# : A

Reset Configuration Data : Disabled Secondary IDE INT# : B

Assign IRQ For USB : Enabled

Set automatically

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7 INTEGRATED PERIPHERALS

IDE HDD Block Mode : Enabled Parallel Port Mode : Normal

IDE Primary Master UDMA : Auto

IDE Primary Slave UDMA : Auto

IDE Secondary Master UDMA : Auto

IDE Secondary Slave UDMA : Auto

On-Chip Primary PCI IDE : Disabled

On-Chip Secondary PCI IDE : Disabled

USB Keyboard Support : Disabled

Onboard FDD Controller : Disabled

Onboard Serial Port 1 : Auto

Onboard Serial Port 2 : Auto

UART2 Mode : Standard

Onboard Parallel Port : 378/IRQ7

8 SAVE & EXIT SETUP

When this item is selected, the following message to confirm whether or not to save

the setting appears.

SAVE to CMOS and EXIT(Y/N)?

Type 'Y' and press the Enter key to save the settings.

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4.7 Creating and download method of LUT

A Lookup table (LUT) based on the film specifically used for the optical density calibration can be cre-

ated and registered in the digitizer. The LUTCreate tool software is used with the calibration film as a

means of registering the LUT in the digitizer. The LUT created can be downloaded to the flash mem-

ory card in the digitizer with the LUTCreate tool.

Caution : Only digitizers with and after Serial No. 184 are capable of adjusting optical densi-

ty with the LUTCreate tool. Attempts to adjust optical density on older machines,

(before serial number 184), the digitizer will not be able to read the optical densi-

ty properly. The serial number seal is found on the back of all machines.

Figure 4.32 Plate on the back

Plate

4.7.1 Installing and deleting the LUT Tool

1 Installing the LUT Tool

Copy the folder having the "LUTCrate.exe" to any place in your hard drive.

• System requirements

Operating system : Windows 95, Windows 98, Windows NT4.0

• Don't delete any files or sub folders inside the folder containing the LUTCreate.exe. This

may result in the LUT Create tool not working properly.

2 Deleting the LUT Tool

Drop the folder having the "LUTCreate.exe" into Recycle Bin.

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4.7.2 Starting and exiting the LUT Tool

1 Boot the 2905 and the computer connected the 2905(see Section 3.8.3, "Confirming

basic function").

2 Double-click the icon labeled "LUTCreate.exe".

The 2905 LUT Create tool is started, and its main window is displayed on the screen.

Figure 4.33 Main window - 2905 LUT Create tool

3 To exit from the tool, click the "Exit" button.

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4.7.3 Updating the firmware

Before creating LUT using the 2905 LUT Create tool, you must update the 2905 firmware.

The three files to be updated are "lut_linear.dat" for LUT, "Sub_firm.ima" for the sub CPU and

"As2905.exe" for the main CPU.

Once the firmware update is completed, you do not need to update the firmware again.

(1) Downloading the "lut_linear.dat"

1 Double-click the "LUTCreate.exe" icon to start the 2905 LUT Create tool.

2 On the main window, click the "Scanner" button to open the Scan dialog box.

Figure 4.34 Scan dialog box

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3 On the Scan dialog box, select the "File" menu -> the "File Download" submenu -> the

"LUT Download" item.

The dialog titled "File Dialog for Download LUT File to the Scanner" opens.

Figure 4.35 The dialog titled "File Dialog for Download LUT File to the Scanner"

4 From the "Look in" combo box, go to the folder that contains the file labeled "lut_lin-

ear.dat", and select the "lut_linear.dat".

5 Click the "Open" button.

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(2) Updating the sub CPU


"Firmware Download" item.

The dialog titled "File Dialog for Update Sub-CPU firm to the Scanner" opens.

2 From the "Look in" combo box, go to the folder that contains the file labeled

"Sub_firm.ima", and select the "Sub_firm.ima".


Caution : Wait until the next dialog box opens automatically. Otherwise, the 2905 may mal-

function.

(3) Updating the main CPU

1 The dialog titled "File Dialog for Update main CPU to the Scanner" opens. This time,

select the file labeled "As2905.exe".


3 The dialog box with the "Please Power-On the Scanner" message is displayed on the

screen. Click the "OK" button and reboot 2905.

(Turn off the Power Switch, wait 10 seconds, and turn on the Power Switch again)

4 Click the "Exit" button to close the Scan dialog box.

Now the firmware is updated. To exit from the application, select "File" menu -> "Exit" from the

main window.

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4.7.4 Creating the LUT

(1) Scanning the Film

a Using LUT Create Tool

• LUT Create Tool downloads lut_linear.dat into 2905 automatically when scanning the

film with LUT Create Tool.

1 Click the "Scanner" button.

The Scan dialog box is displayed on the screen.

Figure 4.36 Scan dialog box

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2 Set the scan region. Measure the region to modify the density data on the film, and fill

in the "Left", "Top", "Width", and "Height" text boxes so the region to modify the

density is displayed on the main window's mini-screen.

• If the "Width" is larger than 50mm, the image displayed on the mini-screen may be

incorrect. If this is the case, reset the width to 50mm or less.

3 On the "Pitch" combo box, set the pixel spacing. Usually, select 50 µm.

4 On the "Density" combo box, set the O.D. range. Usually, select "0-4".

5 Click the "Scan" button.

The scan begins.

6 When the scan is completed, the color of the "Exit" button changes from gray to black.

Click the button to close the Scan dialog box.

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b Using the other scan tool attached 2905

1 Download Lut_linear.dat into the 2905(see "4.7.3 Updating the firmware").

2 Exit LUT Create tool.

3 Scan the film.

Scan condition: Depth 12bits Smooth standard Pitch 50µm Density 0-4

• If the "Width" is larger than 50mm, the image displayed on the mini-screen may be

incorrect. If this is the case, reset the width to 50mm or less.

4 Save the scanned file as tiff file. Name the tiff file "test + Density.tif".

For example, name the tiff file scanned in 0-4 density ,"test4.tif".

5 Move the tiff file into the folder containing the LUTCreate.exe.

6 Restart LUT Create tool.

The scanned image is displayed on the mini-screen.

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(2) Setting the O.D. Range

1 On the "AD Voltage" combo box, set the AD voltage of the A/D board in the 2905.

2 On the "O.D." combo box, select the O.D. value corresponding the AD voltage.

Select "4.0" for the AD voltage "4.4".

* Select "3.0" for the AD Voltage "3.3", "2.0" for "2.2", and "1.0" for "1.1".

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(3) Entering the target O.D. values for each step

1 On the "Step" combo box, select the number of steps to have the LUT created.

* If you click the combo box, a cursor is displayed and any desired value can be entered.

2 Enter the target value to the I th step text box, for I from 0 to the number indicated in

the Step combo box.

Enter value of 0 to the last step combo box.

Caution : Do not use a step over the range that you set the O.D. Range in the combo box

Use a lower density step if differences of O.D. will be less than 0.03

Example:

Step 6 and Step 7 are over range, then do not use them.

Step 1 and Step 2 are close each other less than 0.03. Step 1 is lower density than Step

2, then use it.

step 0 1 2 3 4 5 6 7

film having target value 0.51 0.53 1.5 2.37 3.48 4 4.36

� � � � � � �

value of enter step text box 0 0.51 1.5 2.37 3.48

enter 5 into "step" combo box

* If you saved the measured pixel value and target O.D. value to CSV file, you can set those

saved data.(see "(4) Entering the measured pixel values for each step")

1 Click the "ReadFile" button. The dialog titled "File Dialog for Read sample and AD

data" opens.

2 Select the .csv file you saved and click the "Open" button.

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(4) Entering the measured pixel values for each step

1 For each step of the image displayed on the mini-screen, create the marquee by dragging

inside the image.

Figure 4.37 Marquee

2 Click the text box that contains the Pixel value for the step you created using the mar-

quee.

The average Pixel value (displayed on the "mean" field) is automatically entered on the

"Scan Data" text box.

3 Since LUT Create Tool scans film by 12bits, enter 4095 to the text box associated to the

"step" text box having value of 0.

• The values can be adjusted manually, if needed.

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4 When you finish entering the pixel value, you might want to save the measured pixel

value and target O.D. value by clicking the "SaveFile" button.

The dialog titled "File Dialog for Write sample and AD data to File" opens.

Figure 4.38 The dialog titled "File Dialog for Write sample and AD data to File"

Save the data as .csv file.

* If the entries are saved, the same values are displayed the next time you click the

"ReadFile" button (see "(3) Entering the target O.D. values for each step" ).

5 On the "Closely Method" combo box, select the creation method of the LUT. Usually,

select "Line Graph".

* The "Average" option creates LUT by averaging the values set on each step. The "Line

Graph" option uses the values set on each step "as is". First use "Line Graph"; if that

does not work well, try "Average".

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(5) Creating and saving the LUT file

The newly configured LUT can be saved as a file and downloaded into the 2905.

1 Click the "Create LUT" button.

2 Four message boxes titled "LUTCREATE" are displayed consecutively. Click "OK" for all

of them.

An LUT file is created in the same folder as LUTCreate.exe, and a graph is displayed,

based on the "Closely Method" combo box setting.

3 Click the "Save LUT File" button.

4 A dialog box with the "Save LUT(0-1.0-2.0-3.0-4) to file?" message is displayed on the

screen. Click "OK".

A dialog box titled "File Dialog for Write LUT to File" opens.

5 On the "Save in" combo box, select the location to save the LUT file.

6 In the "File Name" text box, enter any file name, without extension (the file extension is

added automatically).

7 Click the "Save" button.

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(6) Downloading the LUT file

1 Click the "Scanner" button.

2 The Scan dialog box opens.


"Download LUT" item.

4 A dialog box titled "File Dialog for Download LUT file to the Scanner" opens.

5 On the "Look in" combo box, select the LUT file name.


7 The new LUT file is downloaded into the 2905.

When the download of the LUT file is completed, exit from the 2905 LUT Create tool.

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4.7.5 Checking the LUT

1 Download the LUT data into 2905 and scan the film that was used to create the LUT

data.

2 Check the measured value of every step.

The tolerable value must be between target value - 0.2 and target value + 0.2.

* If the target value of the step is out of O.D. range (check the "O.D. combo box"), com-

pare the measured value with the max value of O.D. range.

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4.8 Troubleshooting

4.8.1 The POWER LED does not light

The POWER LED lights only when power is supplied to the digitizer.

1 Check that the power cable of the digitizer is correctly connected with the outlet.

2 Check that the circuit breaker in the back of the digitizer is on.

3 Check that the power switch in the upper part of the digitizer is on.

4.8.2 The READY LED continues blinking

When the power supply of the digitizer is turned on, the motherboard and the sub-CPU board exe-

cute the following process. During the process, the READY LED blinks. The process normally ends in

about 30 seconds.

1 When the power supply of the digitizer is turned on, a reset signal is generated and sent

to the motherboard and the sub-CPU board.

When the motherboard receives this signal, it executes its initializing operation, such as a

memory test.

2 The motherboard loads the operating system from the flash memory card to the main

memory, and executes it.

3 This firmware loads the firmware for sub-CPU from the flash memory card into the main

memory, and furthermore, directs the sub-CPU to download the firmware for the sub-

CPU in the main memory.

4 The firmware for the motherboard initializes the SCSI interface, and commands the sub-

CPU board to start.

5 When the sub-CPU board receives the reset signal, it begins to execute the ROM pro-

gram. It blinks the READY LED and waits for the instruction of the download of the

firmware from the motherboard.

6 When the sub-CPU receives the instruction from the motherboard, it downloads the

firmware for itself from the main memory, and executes hardware test and initialization.

7 The sub-CPU waits for the start instruction from the motherboard.

8 When the sub-CPU receives the start signal, sub-CPU board discontinues blinking the

READY LED, and executes the film eject operation.

9 When six sensors do not detect the film, sub-CPU board stops the operation of the trans-

portation mechanism. If the status meets the requirements in Section 4.8.3, the READY

LED turns on.

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If the READY LED blinks for more than 30 seconds, there may be a failure in either the motherboard,

the sub-CPU board, or the flash memory card.

From the past examples, the number one cause is the battery backup of the motherboard.

Cause (1) The motherboard's battery (CR2032, 3.0V) fell below 3.0V and the CMOS

data was reset.

Procedure (1) Replace the battery and re-set the CMOS data. (See "4.6 Exchanging the

backup battery and setting CMOS")

Cause (2) The voltage of the motherboard battery is about 3V, but the CMOS data was

reset by other causes (thunder, static charge, noise in AC input supply, bad

contact of the battery, etc.)

Procedure (2) See Section 4.6 to re-set the CMOS data.

4.8.3 The READY LED does not light

The READY LED lights only while all the following of the five conditions are being satisfied.

• The polygon mirror must be rotating by a specified cycle.

• H-SYNC signal (signal which decides the timing of horizontal scan) is normally generated.

• Calibration is already executed, and the adjustment of high voltage to the photo multipli-

ers is OK.

• A film has NOT been inserted in the digitizer.

• Data entry DMA function of sub-CPU must operate normally.

The most possible cause of this trouble is that the laser beam is not operating.

The other causes, for example, polygon/polygon driver failure or the sub-CPU's data-entry DMA fail-

ure, are very rare.

Also, if the table the digitizer is placed upon is tilted and the four legs of the digitizer don't receive

equal load, distortion might occur in the optical components and as a result, the light might not hit

the H-SYNC sensor.

Planarity Check

1 Check whether the load is evenly distributed to the four legs of the digitizer. When the

load is not even, adjust the height of the legs or move the digitizer to the table with

good planarity.

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Film Check

2 Check that a film is not in the digitizer.

Laser Scan Check

3 Follow the procedure in Section 4.4.1 to remove the top plate.


anism.

5 Check that the laser is performing a scan.

H-SYNC Signal Check

6 Follow the procedures in Section 4.4.9 to confirm that the H-SYNC signal is generated.

Calibration Operation Check

7 Connect the digitizer to the PC, start the Oscillo tool, and check whether or not the cali-

bration is executed properly.

4.8.4 The operation of transportation mechanism does not stop

The transportation mechanism is designed to stop automatically after ejecting a film from the outlet.

Therefore, if the operation does not stop, there may be a film remaining inside the digitizer.

Follow the procedure in Section 4.4.7 "Cleaning film jams" to remove the film from inside the digi-

tizer.

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4.8.5 Film does not stop at the measurement starting position and is ejected

If an extreme shock is experienced during installation or transportation etc., the light guide may slip

off of the cavity or cut into the cavity, and the photo multiplier might become unable to receive

light. When this happens, calibration cannot be executed. In this case, even if you set a film into the

digitizer after the READY LED is lit, the film will not stop at the starting position and is ejected.

1 Lay the main body of the digitizer as shown in Figure 4.38, and remove six 4mm hexa-

gon holed bolts.

Figure 4.38 How to remove the bottom cover - 1

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2 Remove the bottom cover as shown in Figure 4.39.

Figure 4.39 How to remove the bottom cover - 2

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3 Remove six hexagon holed bolts as shown in Figure 4.40.

Figure 4.40 How to remove the inner cover

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4 Remove the inner cover and uncover the photometry part as shown in Figure 4.41.

Figure 4.41 Photometry part - inside

Cavity

Light guide securing screw

Light guide securing screw

Light guide

Photo multipliers

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5 Confirm the positions of the cavity and the light guide as shown in Figure 4.42. Figure

4.43 is an enlarged view of the proper positions of these two components.

Figure 4.42 Position of cavity and light guide

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Cavity Light guide

Seen from the left side

Light guide

Cavity

Figure 4.43 The proper state - light guide inside the cavity

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6 In Figure 4.44, the light guide is too deep inside the cavity. In this case, loosen the hexa-

gon holed bolts (light guide securing screw) shown in Figure 4.41 and adjust the position

of the light guide.

Cavity Light guide


Light guide

Cavity

Figure 4.44 Light guide is too deep inside the cavity

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7 In Figure 4.45, the light guide is about to come off of the cavity. In this case also, loosen

the hexagon holed bolts (light guide securing screw) shown in Figure 4.41 and adjust the

position of the light guide.

Cavity Light guide


Light guide

Cavity

Figure 4.45 Light guide is about to come off the cavity

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4.8.6 Film is not ejected

Because the transportation mechanism of the digitizer uses roller transportation, a slight curl in the

film may result in the film coming off the roller at the optical density measurement section. If this

happens, film transport is impossible.

Press the EJECT button for a few seconds to reverse the transportation roller. See if this ejects the

film. If this does not work:

If you can see the jammed film, see Section 4.4.1, "Removing the top plate" to remove the top plate

and remove the film.

If you cannot see the film, see Section 4.4.7 "Cleaning film jams" to remove the film.

4.8.7 Film size is not correctly detected

As explained in Section 4.3.3, "Detection of film size", the horizontal size of the film is detected by

scanning the film, and the vertical size is detected by Sensors 1 and 2.

Film size detection errors are mostly caused by failures of Sensors 1 or 2.

Check the movement of the sensor according to Section 4.4.8, "Checking the sensor movement".

4.8.8 The entire image looks black

This digitizer is designed to automatically execute calibration and adjust the high voltage sent to the

photo multipliers before measuring the film.

The possibility is that calibration operation is not completed properly.

Check the calibration operation according to Section 3.9, "Confirming the optical system".

4.8.9 An irregular diagonal line not in the original film is seen in the scanned image.

You may see irregular diagonal patterns in the scanned image displayed on the monitor. This is

called a "moire". If there is a grid in the film, the moire may occur between the grid and the digitiz-

er. If you are displaying the images in a pixel-skipping mode, the moire may occur between the digi-

tizer and the display. When scanning a film with a grid, set the scan mode to high resolution and

reduce the pixel spacing to minimize the moire.

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4.8.10 A stripe is displayed at a right angle from the horizontal scan

If dust drops inside the cavity on the place where the calibration data is affected, the dust is dis-

played as a white line in the image.

Follow the procedure in Section 4.4.10 "Cleaning the light correction cavity" to clean the cavity and

remove the dust.

4.8.11 The O.D. value of the image sandwiched between two transparent sheets is incorrect

When a small step tablet for use in optical density meters is placed between a transparent sheet and

scanned, the optical density value of the image might be lower than the standard value. This hap-

pens as a result of when a small and high-O.D. material is scanned, the light reflected on the materi-

al or the light on the lens flare leak out from the photometry unit.

If you need to scan a small and high-O.D. material, prepare a 14-inch wide black film, make a slightly

smaller cutout, and attach the material there to cone out the extraneous light and measure high

O.D. accurately.

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Chapter 5

Confirming basic operations

Chapter 5 Confirming basic operations

To check the basic operation of the digitizer, connect the digitizer with the PC for testing, and run

the attached software and the Oscillo tool. The following explanation assumes this software is

already installed on the test PC.

The basic operation is checked first, followed by the calibration test and the film size detection test.

The content of Section 5.1, "Checking the basic operation" is the same as Section 3.8.

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5.1 Checking the basic operation

1 Start the application software

Start the application software.

(See the User's Guide of the application software.)

2 Set a film

Set a film in the digitizer. The digitizer first draws the film inside, pushes it back to the starting posi-

tion of film measurement, and then waits for a film read command from the PC. At this point, the

digitizer's READY LED is turned off.

3 Check the EJECT operation

Press the EJECT button in the upper part of the digitizer. The transportation mechanism begins the

film feed operation. If the EJECT button is pressed during this operation, the film feed operation

stops. Pressing the button again resumes the operation.

Check that the film is transported smoothly and no unusual noise is heard during the transportation

mechanism.

4 Film read command is issued

On your PC's screen, click the "Scan" button of the application software. The digitizer begins the

film read operation.

When complete, the film is ejected from the outlet. At this point, the READY LED turns on.

5 The measurement result is displayed

The image read by the digitizer is displayed on the PC.

The software automatically adjusts the image to display the entire image on the screen.

6 Assess the image

If the image is correctly displayed, the digitizer's operation can be judged as OK.

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5.2 Calibration check

Double-click the file "Oscillo.exe" in the "Oscillo" folder to start the Oscillo tool.

5.2.1 Confirmation of state of digitizers

1 Ready status

The digitizer's ready status is displayed in the main window's Ready group box (Figure 5.1).

If four check boxes are checked, the digitizer is ready.

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Figure 5.1 Ready group box

2 Current status

The number of revolutions of the digitizer's polygons, the HV value, the AD value, and the current

film size in the digitizer are displayed in the Current Status group box (Figure 5.2).

Figure 5.2 Current Status group box

3 Sensor status

The sensor status is displayed in the Switch group box (Figure 5.3).

Figure 5.3 Switch group box

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5.2.2 Calibration

1 Calibration

Set Pitch, Density, and Scan Mode in the Calibration group box (Figure 5.4) in the main window and

click the "Calibration" button to start calibration.

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Figure 5.4 Calibration group box

2 Graphical representation of calibration data

Click the "Read" button in the Calibration group box (Figure 5.4) to display the calibration test data

as a graph (Figure 5.5).

Calibration data displayed as a graph

Figure 5.5 The calibration test data graph

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When the value of combo box "Y-Max" or "Y-Min" in the scale group box (Figure 5.6) on the bot-

tom of the graph is changed, the scale of Y axis is changed. Similarly, when the value of "X-Max" or

"X-Min" is changed, the scale of X axis is changed.

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Figure 5.6 Scale group box for the calibration graph

When the graph's curve is moderate as in Figure 5.5, calibration is OK.

If the graph's curve looks like Figure 5.7, dust is in the cavity. In this case, clean up inside the cavity

with a compressed air spray, etc.

If the graph's curve looks like Figure 5.8, optical axis is out of alignment. In this case, adjust the mir-

ror (See Section 4.5.2, "Adjusting the mirror angle").

Figure 5.7 Abnormal waveform 1 - Dust in cavity


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Figure 5.8 Abnormal waveform 2 - Optical axis out of alignment

3 Repeated calibration / graphical representation

Click the "Rep." button in the Calibration group box (Figure 5.4) to repeat calibration and graphical

representation infinitely. The "Rep." button changes to the "StopRep." button.

Click the "Hold" checkbox in the graph's scale group box (Figure 5.6) to superimpose the new data

on the previous graph (Figure 5.9).

Click the "StopRep." button to stop repeated calibration.

Figure 5.9 Superimpose the new calibration data on the old


4 Clear calibration data

Click the "Calibration Data Clear" button on the bottom right of the main window to clear the cali-

bration data on memory.

5.2.3 Line Scan

1 Line scan and its graphical representation

Click the "Scan Line" button on the "Line Scan" group box (Figure 5.10) to scan one line and display

the scanned data as a graph (Figure 5.11).

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Figure 5.10 Line Scan group box

Click the "Calibration" checkbox to perform calibration before scan.

Click the "Move" checkbox to move the film during scan.

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When the value of combo box "Y-Max" or "Y-Min" in the scale group box (Figure 5.6) on the bot-

tom of the graph is changed, the scale of Y axis is changed. Similarly, when the value of "X-Max" or

"X-Min" is changed, the scale of X axis is changed.

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Figure 5.11 Graphical representation of scan data


2 Repeated scan and its graphical representation.

Click the "Oscillo" button in the "Line Scan" group box (Figure 5.10) to repeat one-line scan and

graphical representation infinitely. At this point, the "Oscillo" button changes into the "StopOscillo"

button.

Click the "Hold" checkbox in the graph's scale group box (Figure 5.6) to superimpose the new data

on the previous graph Click the "StopOscillo" button to stop repeated scan.

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Figure 5.12 Superimpose the new scan data on the old


5.3 Film size detection test

Test with films of all desired sizes to confirm the film sizes and the direction are correctly detected.

The tests are performed with the Oscillo tool.

The film sizes detectable by this digitizer are as follows:

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14 inch *14 inch






18cm*43cm(Portrait)





30cm*30cm



24cm*24cm


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1 Start the Oscillo tool

Start the Oscillo tool.

(See Section 3.9, "Confirming the optical system".)

2 Set film

Set film in the digitizer.

3 Assess the Image

If the length and breadth of the film set in the digitizer is correctly displayed in the Film Size column

of the Current Status group box (Figure 5.13) in the main window, the film size detection is judged

as OK.

Perform this operation for all desired film sizes.

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Figure 5.13 The Current Status group box

The film size is displayed.

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Chapter 6

Installation quality check sheet

Chapter 6 Installation quality check sheet

Device Model : 2905

Customer Name :

Serial Number :

Company/Office in Charge of Service :

Date of Installation Completed (Month/Day/Year) :

Person in Charge of Installation :

Notes :

No.

Item

Criteria

Result

6.1 The number of accessories

(1) Floppy disk for testing [ ]

(2) Power cable [ ]

(3) 2905 User's Guide

(4) User's Guide for the application software [ ]

6.2 The digitizer's power supply

POWER LED is on [ ]

READY LED is on [ ]

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6.3 Basic operation

(1) Film set operation

READY LED is off [ ]

(2) Film eject operation

Press the EJECT button - film is ejected [ ]

Press the EJECT button during film ejection - ejection stops [ ]

Press the EJECT button again - ejection resumes [ ]

(3) Film read operation

Film read operation is performed [ ]

No noise from the transportation mechanism [ ]

READY LED goes off after film ejection [ ]

(4) Result of film read

The image displayed on the PC is OK [ ]

The image is not tilted (the horizontal scan direction is OK) [ ]

Film size is OK [ ]

No scratch on film [ ]

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6.4 Film size detection test

Mark the film sizes actually tested from the list below.

(The value is stated as "height * width".)

(1) 17 x 14 inch [ ]

(2) 14 x 14 inch [ ]

(3) 14 x 11 inch [ ]

(4) 11 x 14 inch [ ]

(5) 12 x 10 inch [ ]

(6) 10 x 12 inch [ ]

(7) 10 x 8 inch [ ]

(8) 8 x 10 inch [ ]

(9) 5 x 12 inch [ ]

(10) B4 Portrait [ ]

(11) B4 Landscape [ ]

(12) 18 x 43 cm [ ]

(13) 30 x 40 cm [ ]

(14) 20 x 40 cm [ ]

(15) 15 x 40 cm [ ]

(16) 30 x 35 cm [ ]

(17) 35 x 30 cm [ ]

(18) 30 x 30 cm [ ]

(19) 30 x 24 cm [ ]

(20) 24 x 30 cm [ ]

(21) 15 x 30 cm [ ]

(22) 24 x 24 cm [ ]

(23) 28 x 24 cm [ ]

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Chapter 7

Maintenance manual

Chapter 7 Maintenance manual

7.1 Start-of-day and end-of-day checks

Start-of-day check

1 Check the cables (power cable, connection cable to the PC) are not damaged.

End-of-day check

1 Check all power is off.

7.2 Regular check

Once a year, clean the cavity by the procedure explained in Section 4.4.10.

If streaks appear on scanned images, wipe Mirror 3 and 4 on Figure 4.20 and the mirror on Figure

4.10 with an alcohol-soaked gauze / cotton bud. Do not apply excessive pressure to the mirrors.

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Appendix

Wiring diagram

Appendix Wiring diagram

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SEL

EC

T S

WIT

CH

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Documents

Laser Film Digitizer 2905 Service Guide - A.M. X-Ray ... · iii Safety Notices This service guide is intended for service engineers who install or service the Film Digitizer model