47LB1DA 1080P 1 LCD 2007 Con Diagramas

Digital Display

47LB1DA 1080p LCDSpring 2007

Service

TRAINING MANUAL

Published February 2006 by LG Education & Product EngineeringCustomer Service (and Part Sales): 1-800-243-0000Technical Support (and Part Sales): 1-800-847-7597USA Website: www.lgusa.comCustomer Service Website: us.lgservice.comB2B Service Website: aic.lgservice.comTraining Website: www.LGCSAcademy.comIMPORTANT SAFETY NOTICE

This manual was prepared for use only by properly trained audio-visual service technicians. When servicing this product, under no circumstancesshould the original design be modified or altered without permission from LG Electronics. Unauthorized modifications will not only void thewarranty, but may lead to property damage or user injury. All components should be replaced only with types identical to those in the originalcircuit and their physical location, wiring, and lead dress must conform to original layout upon completion of repairs. If any fuse (or FusibleResistor) in this TV receiver is blown, replace it only with the factory specified fuse type and rating. When replacing a high wattage resistor (OxideMetal Film Resistor, over 1W), keep the resistor 10mm away from PCB. Always keep wires away from high voltage or high temperature parts. Do notattempt to modify this product in any way.

Special components are also used to prevent shock and fire hazard and are required to maintain safe performance. No deviations are allowedwithout prior approval by LG Electronics. Service work should be performed only after you are thoroughly familiar with these safety checks andservicing guidelines. Circuit diagrams may occasionally differ from the actual circuit used. This way, implementation of the latest safety andperformance improvement changes into the set is not delayed until the new service literature is printed.

GENERAL SAFETY GUIDANCE

An lsolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC power line. Use atransformer of adequate power rating to protect against personal injury from electrical shocks. It will also protect the receiver and its componentsfrom being damaged by accidental shorts of the circuitry that may be inadvertently introduced during the service operation. Before returning thereceiver to the customer, always perform an AC leakage current check on the exposed metallic parts of the cabinet, such as antennas, terminals,etc., to be sure the set is safe to operate without damage of electrical shock.

With the instrument AC plug removed from AC source, connect an electrical jumper across the two AC plug prongs. Place the AC switch in the onposition, connect one lead of ohm-meter to the AC plug prongs tied together and touch other ohm-meter lead in turn to each exposed metallicparts such as antenna terminals, phone jacks, etc. If the exposed metallic part has a return path to the chassis, the measured resistance should be

between 1MΩ and 5.2MΩ. When the exposed metal has no return path to the chassis the reading must be infinite. Any other abnormality thatexists must be corrected before the receiver is returned to the customer.

ELECTROSTATICALLY SENSITIVE DEVICESSome semiconductor (solid-state) devices can be damaged easily by static electricity. Such components commonly are called ElectrostaticallySensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor “chip” compo-nents. The following techniques should be used to help reduce the incidence of component damage caused by static electricity.

Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on the bodyby touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should beremoved for potential shock reasons prior to applying power to the unit under test. After removing an electrical assembly equipped with ESdevices, place the assembly on a conductive surface such as an ESD mat, to prevent electrostatic charge buildup or exposure of the assembly. Useonly a grounded-tip soldering iron to solder or unsolder ES devices. Use only an anti-static solder removal device. Some solder removal devicesnot classified as “anti-static” can generate electrical charges sufficient to damage ES devices. Do not use freon-propelled chemicals which cangenerate electrical charge sufficient to damage ES devices. Do not remove a replacement ES device from its protective package until immediatelybefore you are ready to install it. Minimize bodily motions when handling unpackaged replacement ES devices (Otherwise, seemingly harmlessmotion, such as the brushing together of your clothing or the lifting of your foot from a carpeted floor, can generate static electricity sufficientto damage an ES device).

REGULATORY INFORMATIONThis equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limitsare designed to provide reasonable protection against harmful interference when the equipment is operated in a residential installation. Thisequipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, maycause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on,the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna;Increase the separation between the equipment and receiver; Connect the equipment into an outlet on a circuit different from that to which thereceiver is connected; Consult the dealer or an experienced radio/TV technician for help.

The responsible party for this device’s compliance is:

LG Electronics of Alabama, Inc.201 James Record RoadHuntsville, AL 35824, USADigital TV Hotline: 1-800-243-0000

Directview LCD Training 3 Contents

TABLE OF CONTENTS

OVERVIEW ............................................................................................................. 5INTRODUCTION .................................................................................................... 5XD ENGINE .......................................................................................................... 5COMPUTER CONNECTION ........................................................................................ 5SERIAL NUMBER STRUCTURE .................................................................................. 6LOCK SYSTEM ...................................................................................................... 6SET PASSWORD .................................................................................................... 7MOUNTING INTERFACE .......................................................................................... 7SERVICE MENU .................................................................................................... 8SERVICE REMOTE ................................................................................................. 9

THEORY ............................................................................................................... 11LIQUID CRYSTAL DISPLAY .................................................................................... 11LIQUID CRYSTAL PANEL ....................................................................................... 12

CIRCUIT DESCRIPTIONS ......................................................................................... 13POWER SUPPLY .................................................................................................. 13POWER SUPPLY SPECS ......................................................................................... 14VIDEO .............................................................................................................. 15AUDIO ............................................................................................................. 16I2C FLOWCHART ................................................................................................ 18

TROUBLESHOOTING ............................................................................................... 20TEST POINTS ..................................................................................................... 20POWER SUPPLY RESISTANCE READINGS ................................................................... 21LED INDICATORS ................................................................................................ 22NO POWER ........................................................................................................ 23POWER SUPPLY SCHEMATIC .................................................................................. 25POWER SUPPLY - DEEP SLEEP MODE ....................................................................... 26POWER SUPPLY - RUN 160VDC & REGULATED 383VDC ............................................... 27POWER SUPPLY - AC DETECT & RELAY CONTROL ........................................................ 28POWER SUPPLY - 24VDC & 19VDC SUPPLY .............................................................. 29POWER SUPPLY - 6VDC & 12VDC SUPPLY ................................................................ 30DEFECTIVE COMPONENT ....................................................................................... 31DEFECTIVE HDMI ............................................................................................... 32DEFECTIVE RF .................................................................................................... 33DEFECTIVE RF 2 ................................................................................................. 34DEFECTIVE RF 3 ................................................................................................. 35DEFECTIVE DIGITAL ............................................................................................ 36NO AUDIO - COMPOSITE & COMPONENT .................................................................. 37NO AUDIO - HDMI .............................................................................................. 37NO AUDIO - RF .................................................................................................. 38NO AUDIO - DIGITAL ........................................................................................... 38NO AUDIO - GENERAL .......................................................................................... 39CABLECARD ....................................................................................................... 40

DISSASEMBLY ....................................................................................................... 43EXPLODED VIEW ................................................................................................. 43BACK CABINET REMOVAL ...................................................................................... 44BOARD DESCRIPTIONS ......................................................................................... 45FRAME REMOVAL ................................................................................................ 47

- 4 -

Directview LCD Training 5 Overview

OVERVIEW

COMPUTER CONNECTIONA computer can be connected to the RGB (VGA) or HDMI 1 connectionon the TV. The HDMI connection will require a DVI to HDMI adapter ifthe PC has a DVI connector.

Set the monitor output resolution and vertical frequency on the PCbefore connecting it to the TV. When using RGB (VGA), the TV inputwill have to be changed from RGB-DTV to RGB-PC in the main inputmenu option. This is not required on the HDMI conection since it isauto sensing. If the message “OUT OF RANGE” appears on the screen,adjust the PC output to a format listed in the chart.

47LB1DA1920x1080p Resolution

NTSC/ATSC/QAM w/CableCARDTM

HDMI with HDCP x2RGB (VGA) & RS-232

INTRODUCTIONAll LCD TV models are module level repair in and out ofwarranty. They are covered by a one year parts and laborwarranty. Refer to the last page of the owner’s manual formore warranty information. For models under 30”, the SeviceLevel is Factory Service Repair. Larger models are Field Service.Contact the Warranty department for more information.

OVERVIEW

XD ENGINEXD is LG Electronic’s unique picture improving technology using an advanced digital signal processingalgorithm. When selecting EZ Picture options (Daylight, Normal and Night time), XD is automaticallychanged to Auto. When selecting EZ Picture options (User 1 and User 2), you can choose the Auto/Manual. When selecting Manual, you can adjust XD Contrast, XD color, and XD Noise.1) Press the MENU button and then use the up or down arrows to select the VIDEO menu.2) Press the right arrow and then use the up or down arrows to select XD.3) Press the right arrow and then use the up or down arrows to select Auto or Manual.

Manual:ˆ XD Contrast: Optimize the contrast automatically

according to the brightness of the reflection.ˆ XD Color : Adjust the colors of the reflection

automatically to reproduce natural colors as closelyas possible.

ˆ XD Noise: Removes the noise up to the point whereit does not damage the original picture.

Use the use the up or down arrows to select On or Off.4) Press Exit button to return to TV viewing or press MENUbutton to return to the previous menu.

ResolutionVertical

Frequency (Hz)800x600 60Hz800x600 72Hz800x600 75Hz1024x768 60Hz1024x768 70Hz1024x768 75Hz1280x768 60Hz1360x768 60Hz

Some PC Resolutions

EZ Picture

Color Temperature

XD

Advanced

Video Reset

Manual

XD Contrast On

XD Color On

XD Noise On


OVERVIEW

SERIAL NUMBER STRUCTURE

1 2 3 4 5 6 7 8 9 10 11 12 13 14

\____/ \__/ \__/ \______________/

Sequential Number (XXXXXXX),

5 to 7 digits (Number or Alphabet)

Secret Code (VV), 2 digits (Alphabet)

Production Site (SS), 2 digits (Alphabet)

Last digit of Year and Month for Production (YMM), 3 digits (Number)

[Example] 403MXXQ05106

1 2 3 4 5 6 7 8 9 10 11 12 13 14 -----14 digit format

4 0 3 M X X Q 0 5 1 0 6 -------12 digit format

\____/ \__/ \__/ \______________/

05106: Sequential Number

XQ: 2-Secret Code

MX: Production Site (produced at LGEMX in Mexico)

403: Last digit of Year and Month for Production (manu. In March 2004)

LOCK SYSTEMEnables or disables the blocking scheme you set uppreviously.1) After inputting the password, use the up or down

arrows to choose Lock System.2) Press the right arrow and then use the up or down

arrows to select On or Off. When you select On, theLock System is enable.

3) Press EXIT button to return to TV viewing or pressMENU button to return to the previous menu.

Lock System

Set Password

Block Channel

Movie Rating

TV Rating-Children

TV Rating-General

Input Block

OffOn


OVERVIEW

SET PASSWORDChange the password by inputting a new password twice.1) After inputting the password, use the up or down

arrows to choose Set password.2) Press the right arrow and then choose any 4 digits

for your new password.As soon as the 4 digits are entered, re-enter thesame 4 digits on the Confirm. Then your changedpassword has been memorized.

3) Press EXIT to return to TV viewing or press MENU toreturn to the previous menu.

NOTE: If you ever forget your password, key in ‘7’, ‘7’, ‘7’, ‘7’ on the remote control.

MOUNTING INTERFACEThe Video Electronics Standards Association (VESA) Flat Display Mounting Interface Standard (FDMI)outlines mounting interface standards for flat-panel displays. This monitor uses a VESA standard somost universal wall mounts for Plasmas and large LCDs will work.

31

231

H

A

CB B

E1

D

E2

F

G

Screw Hole

Top View

Side View

Back View

37LZ30 32LC2D 37LC2D 32LP1D 37LP1D 42LP1D 55LP1D 42LB1DR 47LB1DA

A 664.2 682.1 762 570 643.1 725.5 840 1078.5 1173.7

B 220.5 302.6 169 408 275 345 406 287.4 339.7

C 580 200 600 200 600 600 800 600 600

D 269 100 400 100 400 400 400 400 400

EE1:149.5

E2:200

E1:189.2

E2:227.2

E1:112.5

E2:141

E1:117

E2:142.3

E1:146.4

E2:187.4

E1:203.5

E2:274.5

E1:112.4

E2:157.5

E1:136.1

E2:182.6

F 61 60 62 68.8 86 116.1 103.7 71.3 94.1

G 81.5 74 78 135.8 110 103 59.7 85 74.8

H M5 M4 M6 M4 M5 M5 M5 M6 M6

J 13 14 12 14 14 14 14 13 13Mounting Hole 580*269 200*100 600*400 200*100 600*400 600*400 800*400 600*400 600*400

VESA NO YES YES YES YES YES YES YES YES

Lock System

Set Password

Block Channel

Movie Rating

TV Rating-Children

TV Rating-General

Input Block

New

Confirm

********


OVERVIEW

CALIBRATION MENU

Input

Pic. Mode

1. Contrast

2. Brightness

3. Color

4. Tint

5. Sharpness

6. R. Gain

7. G Gain

8. B Gain

9. R Offset

10. G Offset

11. B Offset

POS/SIZE ADJUST

1. H Position

2. V Position

3. H Size

4. V Size

Default Load

Count : 6

90

50

50

0

50

192

97

147

64

64

64

0000

DTV

-

1 2 3

7 8 9

4 65

0 FLASHBK

EXPERT MODE

Hold the MENU Key until

ENTER PASSWORD appears on the

screen, Press remote key sequence 8-7-4-1

A custom installer can calibrate the TV to the

viewing environment and the viewer’s

preferences then lock it in so the settings

cannot be altered without the code

SERVICE MENU

Note: Horizontal and Vertical controls only work with the TV, CTV, AV1, and AV2 sources.


OVERVIEW

SERVICE REMOTENUM KEY FUNCTION1 POWER To turn the TV on or off2 POWER ON To turn the TV on automatically if the pow er is supplied to the TV. Use the POWER key to deactivate; It

should be deactivated w hen delivered.3 MUTE To activate the mute function.4 P-CHECK To check TV screen image easily.5 S-CHECK To check TV screen sound easily6 ARC To select size of the main screen (Normal, Spectacle, Wide or Zoom)7 CAPTION Sw itch to closed caption broadcasting8 TXT To toggle on/off the teletext mode9 TV/AV To select an external input for the TV screen10 TURBO SOUND To start turbo sound11 TURBO PICTURE To start turbo picture

To enter adjustment mode w hen manufacturing the TV sets.To adjust the screen voltage (automatic): In-start mute Adjust AV (Enter into W/B adjustment mode).W/B adjustment (automatic): After adjusting the screen W/B adjustment Exit tw o times

13 ADJ To enter into the adjustment mode. To adjust horizontal line and sub-brightness.14 MPX To select the multiple sound mode (Mono, Stereo or Foreign language).15 EXIT To release the adjustment mode.16 APC(PSM) To easily adjust the screen according to surrounding brightness.17 ASC(SSM) To easily adjust sound according to the program type.18 MULTIMIDIA To check component input.19 FRONT-AV To check the front AV.20 CH To move channel up/dow n or to select a function displayed on the screen.21 VOL To adjust the volume or accurately control a specif ic function.22 ENTER To set a specif ic function or complete setting.23 PIP CH-(OP1) To move the channel dow n in the PIP screen. To use as a red key in the teletext mode.24 PIP CH+(OP2) To move the channel in the PIP screen. To use as a green key in the teletext mode.25 PIP SWAP(OP3) To sw itch betw een the main and sub screens. To use as a yellow key in the teletext mode.26 PIP INPUT(OP4) To select the input status in the PIP screen. To use as a blue key in the teletext mode.27 EYE To set a function that w ill automatically adjust screen status to match. The surrounding brightness so

natural color can be displayed.28 MENU To select the functions such as video, voice, function or channel.29 IN-STOP To set the delivery condition status after manufacturing the TV set.30 STILL To halt the main screen in the normal mode, or the sub screen at the PIP screen. Used as a hold key in the

teletext mode. Page updating is stopped.31 TIME Displays the teletext time in the normal mode. Enables to select the sub code in the teletext mode.32 SIZE Used as the size key in the PIP screen in the normal mode. Used as the size key in the teletext mode.33 MULTI PIP Used as the index key in the teletext mode. Top index w ill be displayed if it is the top text.34 POSITION To select the position of the PIP screen in the normal mode. Used as the update key in the teletext mode

(Text w ill be displayed if the current page is updated.)35 MODE Used as Mode in the teletext mode.36 PIP To select the simultaneous screen.37 TILT To adjust screen tilt.38 0~9 To manually select the channel.

12 IN-START

- 10 -

Directview LCD Training 11 Theory

THEORY

THEORYThis section covers how an LCD Display works.

LIQUID CRYSTAL DISPLAYA Liquid Crystal Display is composed of a light source(backlight), a Liquid Crystal Panel, and a driving circuit. Westart with a light source at the back of the panel composedof thin fluorescent bulbs (CCFLs - Cold Cathode FlouresentLamps). This light passes through filters to help create auniform light source. Then the light passes through the LiquidCrystal Panel which is composed of thousands of pixels thatcontrol the flow of light throught the panel to make images.

Data Driver ICPrinted Circuit Board

Gate Driver IC

Inverter

DrivingCircuit

Power Supplyfor Video Signal

Pixel Array & Wiring

Liquid CrystalPanel

PolarizerCF PanelLiquid CrystalTFT Panel

LampPrismDiffuserLight Guide

Backlight Unit

Polarizer

ReflectorInverter

Polarizer

TFT & Electrode

Color Filters

Top Electrode

Polarizer

Back Light

Liquid Crystals

Liquid Crystal Panel

Frame

Prism

Diffusers

ReflectorLight Guide

An LCD panel from a 15" LCD TV.

Directview LCD Training 12 Theory

THEORY

TFT Element

Pixel Electrode(Transparent)

InsulatorSemi-conductor

Source Gate Drain

Glass Panel

Data Line

Gate Line

Pixel ElectrodeLiquid Crystal

Common Electrode

Color Filter

Polarizer

Polarizer

Transistor

LIQUID CRYSTAL PANELBelow (on the left) is a cross section of a liquid crystal panel. The key to an LCD's operation is thepolarizers. The polarizers only allow a certain wavelength of light to pass through. The two polarizersare mounted at a 90 degree angle with respect to each other, which prevents light from passingthrough. The liquid crystals are used to twist the light beam 90 degrees and allow light to passthrough that cell. Color comes from a simple light filter.

Each sub-pixel or cell (a red, green, and blue sub-pixel equals onepixel) is controlled by a Thin Film Transistor (TFT). This providesaccurate control of each cell and makes for an accurate picture.Some methods used in the past that didn't involve a switch andcurrent could leak to surrounding cells resulting in a blurred image.A TFT is a semiconductor (bottom-right picture), it behaves like arelay switch.

Directview LCD Training 13 Circuit Descriptions

CIRCUIT DESCRIPTIONS

CIRCUIT DESCRIPTIONSPOWER SUPPLY

BLOCK DIAGRAMA

/C In

pu

t

SC

100

RM

I Filt

er

LP

100,

LT

101

Bri

dg

e

BD

100

PF

C S

tag

e

Q60

0, Q

601,

Q

602,

Q60

3M

ain

DC

/DC

T10

1

PF

C C

on

tro

ler

U60

0D

113

Ru

n

PC

102

Rel

ay O

N

PW

M

Co

ntr

olle

r

U10

6

Mai

n D

C/D

C

T10

2

PC

104

Sta

nd

-by

Rec

t.

D11

4, D

115

Sta

nd

-by

DC

/D

C

Q50

0

T10

0

Ou

tpu

t R

ecti

fier

DC

/DC

U20

2,

Q20

0,

Q20

1

PC

103

PW

M

Co

ntr

olle

r

U50

0

3.4

Vo

5VS

B t

o D

igit

al,

Tu

ner

PC

B

GN

D

PW

M

Co

ntr

olle

r

U10

2

A/C

Det

ect

U51

0

PC

101

Mic

om

B

oar

d

DP

M O

n/O

ffA

/C D

etec

t

24V

DC

Det

ect

19V

DC

Det

ect

12V

DC

Det

ect

6VD

C D

etec

t

RL

Y O

n

PC

105

Ou

tpu

t R

ecti

fier

D21

1

D21

2

Ou

tpu

t R

ecti

fier

D21

4, D

215,

D21

6

D21

219

VD

C

24V

DC

GN

D

19V

DC

Det

ect

24V

DC

Det

ect

12V

DC

GN

DDC

/DC

U20

3,

Q20

2,

Q20

3

6VD

C

6VD

C D

etec

t

12V

DC

Det

ect



POWER SUPPLY SPECS

Max Output Output Voltage STB 5Vo 3.4V 6Vo 12Vo 19Vo 24Vo

Voltage Range 4.95 3.2 5.7 11.4 17 22.8

[V] ~ 5.45 ~ 3.6 ~ 6.3 ~ 12.6 ~ 20 ~ 25.2

Current Range [A] 2 5 5 3 4.4 12

Max Ripple Output Voltage STB 5Vo STB 3.4Vo 6Vo 12Vo 19Vo 24Vo

Ripple Voltage Range [mVp-p] 200mV 150mV 200mV 360mV 540mV 720mV

Output Regulation Output Voltage STB 5Vo 3.4Vo 6Vo 12Vo 19Vo 24Vo

Static Regulation Load Max [A] 2 5 5 3 3 10.5

Voltage Spec [V] 4.95 ~ 5.45 3.2 ~ 3.6 5.7 ~ 6.3 11 ~ 13 16 ~ 20 22.8 ~ 25.2

Cross

Regulation

Load Variable[A] 0.8 4 3.5 2.5 1 ~ 2.5 10.5

Voltage Spec [V] 4.95 ~ 5.45 3.2 ~3.6 5.7 ~6.3 11.4 ~ 12.6 16 ~ 20 22.8 ~ 25.2

No Load [A] 0.08 On / Off Off

Voltage Spec [V] 4.95 ~ 5.45 3.2 ~3.6/OFF Off

Deep Sleep Mode Output Voltage STB 5Vo 3.3Vo 12Vo 19Vo 24Vo 5Vo

Load [A] 0.08 0

Wattage [W] Less than 1W [at 230Vac/50Hz]

SMPS Protect modes

NO Output Voltage

Name

*1) Over Current Protection Over Voltage Protection Short circuit Protection

Range[A] Protection Range[V] Protection

1 STB5Vo Min. 3A Shutdown 8 Shutdown

No Hardware

Failure

2 6Vo Min. 6A Shutdown

3 12Vo Min. 4A Shutdown 14 Shutdown

4 19Vo Min. 5.5A Shutdown 22 Shutdown

5 24Vo Min. 14A Shutdown 26 Shutdown

6 3.4Vo Min. 6A Shutdown 4.5 Shutdown



OSD

RF/Composite

Component/HDMI

Digital TV

VIDEOVIDEO FLOWCHART

CIRCUIT DESCRIPTIONThe ATSC/NTSC tuner can receive both terrestrial analog and terrestrial digital signals. But the NTSCtuner can receive terrestrial analog only. Therefore if you run two displays at The same time, it isnot possible to see two digital channels.A/V SW (CXA2069) is the IC that takes external input terminal signals and broadcast signals fromthe tuners and handles them selectively. Audio signals are sent to MSP4450. Video signals are sentto HD-II via two paths - uPD64015 on the upper side is used to handle sub displays, whileuPD64015 on the lower side controls the main display.To the lower side, signals are sent using an expensive 3D-comb filter with Y/C divided. The videodecoder (uPD64015) is a chip that decodes input signals. HD-II is a chip that controls nearly allvideo-related functions, including brightness, sharpness, video formatting and scaling. If digitalbroadcasting is available, it comes through Transport Stream, which can be controlled from HD-II.Video SW (CXA2181) is an IC that outputs video signals selectively. The selected one is outputtedthrough MSP (MSP4450) as a digital signal.



DRIVER ICThe Drive IC sends signals from deinterlacer to the TFT-PANEL.

GATE DRIVER IC(8EA): HORIZONTALSends signals from the data line to the TFT-Panel Gate in series.Each IC controls 128 lines horizontally.

SOURCE DRIVER IC(5EA): VERTICALAs the gate of the TFT-Panel is ON, pixel data is being sent fromthe source to each pixel. Each IC controls 154 lines vertically.

TCP TYPE DRIVER IC(Tape Carrier Package)

DRIVER IC

AUDIOAUDIO FLOWCHART

CIRCUIT DESCRIPTIONThe MSP 44x0G family of single-chip Multi-standard Sound Processors covers the sound processingof all analog TV-Standards worldwide, as well as the NICAM digital sound standards. The full TVsound processing, starting with analog sound IF signal-in, down to processed analog AF-out, isperformed on a single chip.These TV sound processing ICs now include versions for processing the multi-channel televisionsound (MTS) signal conforming to the standard recommended by the Broadcast Television SystemsCommittee (BTSC). The DBX noise reduction, or alternatively, Micronas Noise Reduction (MNR) isperformed alignment free.



The MSP 44x0G has built-in automatic functions: The IC is able to detect the actual sound standardautomatically (Automatic Standard Detection). Furthermore, pilot levels and identification signalscan be evaluated internally with subsequent switching between mono/stereo/bilingual; no I2Cinteraction is necessary (Automatic Sound Selection).The CS5330A / 31A is a complete stereo analog-to digital converter which performs anti-aliasfiltering, sampling and analog-to-digital conversion generating 18-bit values for both left and rightinputs in serial form.The output sample rate can be infinitely adjusted between 2 and 50 kHz. The CS5330A / 31Aoperates from a single +5V supply and requires only 150 mW for normal operation The CXA2069Q isa TV I2C bus-compatible AV switch IC. The video system and the stereo audio system both have 7inputs and 3 outputs each. 4 of the 7 video system inputs support S2 and S protocols. The desiredinputs can be independently assigned to each output (in the audio system, the left and rightchannels are processed as one unit) by I2C bus control. However, the same input is assigned toboth the video and audio system output 3.



I2C FLOWCHART

- 19 -

Directview LCD Training 20 Troubleshooting

TROUBLESHOOTING

TROUBLESHOOTINGTEST POINTS

Connector Pin Stby Run Connector Pin Stby Run Connector Pin Stby Run1 3.4 V nc 1 0 nc 1 0 nc2 3.4 V nc 2 0 nc 2 5.9 V nc3 GND nc 3 0 nc 3 5.9 V nc4 GND nc 4 0 nc 4 0 nc5 6.0 V nc 5 1.4 V nc 5 0.5 V 12.3 V6 6.0 V nc 6 0 nc 6 0.5 V 12.3 V7 GND nc 7 0 nc8 GND nc 8 0 nc Connector Pin Stby Run9 12.4 V nc 9 0 nc 1 3.4 V nc10 12.4 V nc 10 0 nc 2 3.4 V nc11 GND nc 11 0 nc 3 GND nc12 GND nc 12 0 nc 4 GND nc

Connector Pin Stby Run Connector Pin Stby Run 5 6.0 V nc1 17.8 18.3 1 17.8 18.3 6 6.0 V nc2 17.8 18.3 2 17.8 18.3 7 GND nc3 GND nc 3 GND nc 8 GND nc4 GND nc 4 GND nc 9 12.4 V nc5 6.0 V nc 5 6.0 V nc 10 12.4 V nc6 GND nc 6 GND nc 11 GND nc7 3.4 V nc 7 3.4 V nc 12 GND nc8 GND nc 8 GND nc Connector Pin Stby Run9 12.4 V nc 9 12.4 V nc 1 5.2 V nc10 GND nc 10 GND nc 2 2.2 V nc

Connector Pin Stby Run Connector Pin Stby Run 3 5.2 V nc1 5.2 V nc 1 5.1 V nc 4 GND nc2 2.2 V nc 2 0 nc 5 0 3.3 V3 5.2 V nc 3 4.6 V nc 6 0 nc4 GND nc 4 0 nc 7 1.6 V 3.3 V5 0 3.3 V 5 0 nc 8 5.2 V nc6 0 nc 6 0.7 V nc 9 GND nc7 1.6 V 3.3 V 7 4.9 V nc 10 0.1 V 3.3 V8 5.2 V nc 8 4.9 V nc 11 6.0 V nc9 GND nc 9 0 nc 12 GND nc10 0.1 V 3.3 V 10 8.9 V nc 13 1.9 V nc11 6.0 V nc Connector Pin Stby Run Connector Pin Stby Run12 GND nc 1 0 nc 1 0 nc13 1.9 V nc 2 3.3 V nc 2 5.9 V nc

Connector Pin Stby Run 3 0 nc 3 5.9 V nc1 0 3.3 V 4 3.3 V nc 4 0 nc2 1.6 V 3.3 V 5 0 nc 5 0.5 V 12.3 V3 GND nc 6 0 nc 6 0.5 V 12.3 V4 GND nc 7 0 nc5 GND nc 8 8.9 V nc6 GND nc7 GND nc8 23.9 V nc NOTE: "nc" = No Change from Standby to Run9 23.9 V nc10 23.9 V nc11 23.9 V nc NOTE: All voltages taken w ith chassis ground as reference12 23.9 V nc

SMPS Analog Board De-Interlace Board

Digital Board

P200 P104 P406

P1603

P202 P602

P603 P1605

P1604

P301P201

P203 P204 P205 P206


TROUBLESHOOTING

POWER SUPPLY RESISTANCE READINGS

AC_DET 100.7 KOhm 19V 1.7 KOhm* 3.4V 1 KOhm* AC_DET ? 19V 2 KOhm* 3.4V 1 KOhm*PWR_NF ? 19V 1.7 KOhm* 3.4V 1 KOhm* PWR_NF ? 19V 2 KOhm* 3.4V 1 KOhm*STB 7 MOhm* GND 0 GND 0 STB 8 MOhm* GND 0 GND 0GND 0 GND 0 GND 0 GND 0 GND 0 GND 0INV_CTRL 93.4 KOhm 8V 1 KOhm* 6V 1 KOhm* INV_CTRL ? 8V 1.3 KOhm* 6V 1 KOhm*ERR_OUT ? GND 0 6V 1 KOhm* ERR_OUT ? GND 0 6V 1 KOhm*BT_CNTRL 99.7 KOhm 3.4V 1 KOhm* GND 0 BT_CNTRL ? 3.4V 1 KOhm* GND 05V_STB 4 MOhm* GND 0 GND 0 5V_STB 5.5 MOhm* GND 0 GND 0GND 0 12V .7 KOhm* 12V 1 KOhm* GND 0 12V .7 KOhm* 12V 1 KOhm*PWR_DN 5.5 KOhm GND 0 12V 1 KOhm* PWR_DN ? GND 0 12V 1 KOhm*6V 1.3 KOhm* GND 0 6V 1.3 KOhm* GND 0GND 0 GND 0 GND 0 GND 03.4V_ON 10.9 KOhm 3.4V_ON 10.9 KOhm

INV. CNTRL 93.4 KOhm INV. CTRL ?BRT CNTRL 1 KOhm BRT CTRL ?GND 0 GND 0GND 0 GND 0GND 0 GND 0GND 0 GND 0GND 0 GND 024V 1.2 KOhm* 24V 1 KOhm*24V 1.2 KOhm* 24V 1 KOhm*24V 1.2 KOhm* 24V 1 KOhm*24V 1.2 KOhm* 24V 1 KOhm*24V 1.2 KOhm* 24V 1 KOhm*

* Resistance reading w hen capacitors are fully charged

47LB1DA POWER SUPPLYResistances w ith Board Connected Resistances w ith Board Disconnected

P202 P201 P200 P202 P201 P200


TROUBLESHOOTING

LED INDICATORSD

1301

VS

B_V

AL

IDD

1303

VS

B_E

RR

OR

D1603

+3.3

_L

D1602

+5V

_L

D301

LE

D_D

ATA

1

D300

LE

D_D

ATA

0

D1601

+5.0

V

D1604

+3.3

V


TROUBLESHOOTING

NO POWER

120VAC@SC100?

160VDC or greater@ cathode of D115to chassis ground

Replacepower supply

5VSB onP1610 pin30

Check powercord, outlet,breaker, etc.

5VSB onP202 pin3

DisconnectP1604

5VSB on P202

Replaceanalog board

Check/replacedigital board

Replacepower supply

Replacedigital board

Reconnect P1604disconnect P1610

5VSB on P202 pin3

5VSB oncheck C305

of analog board

5VSB onP102 pin 30

Replaceribbon cable

Replaceanalog board

3.4 STBon C369/L315

Replaceanalog board

NO POWER

YES

NO

Continued...


TROUBLESHOOTING

3.4 STBon pin 11 of IC504

of analog board

Replaceanalog board

2.2VDCon P1610

pin 4Check fan

2.2VDC onP1604 pin2

Replacedigital board

2.2VDC onP202 pin2

Replacewires

15VDConR107 to anode

D101

Replacepower supply

380VDC oncathode D602to anode D101

Replacefan

Replaceanalog board

Check power supply outputs:P200 pin5 = 6VDCP200 pin9 = 12VDCP201 pin8 = 19VDCP203 pin1 = 24VDC

Replacepower supply

Replacepower supply

Call Tech Support

YES

NO

DIRECTVIEW LCD TRAINING PAGE 25

383 VDC

75VDC

15VDC

15VDC

14.29VDC

383VDC

383VDC

24VDC

P203 PINS 8 - 12

P204 PINS 8 - 12

P205 PINS 8 - 12

P206 PINS 8 - 12

24VDC

GND

P203 PINS 3 - 7

P204 PINS 3 - 7

P205 PINS 3 - 7

P206 PINS 3 - 7

GND

19VDC19VDC

P201 PINS 1, 2

12VDC

P200 PINS 9, 10

P201 PIN 9

12VDC

6VDC

P200 PINS 5, 6

P201 PIN 5

P202 PIN 11

6VDC

GND

6V DET

GND

POWER SUPPLY SCHEMATIC


383 VDC

75VDC

15VDC

15VDC

14.29VDC

383VDC

383VDC

24VDC

P203 PINS 8 - 12

P204 PINS 8 - 12

P205 PINS 8 - 12

P206 PINS 8 - 12

24VDC

GND

P203 PINS 3 - 7

P204 PINS 3 - 7

P205 PINS 3 - 7

P206 PINS 3 - 7

GND

19VDC19VDC

P201 PINS 1, 2

12VDC

P200 PINS 9, 10

P201 PIN 9

12VDC

6VDC

P200 PINS 5, 6

P201 PIN 5

P202 PIN 11

6VDC

GND

6V DET

GND

5 VDC STBYP202 Pin 3, 8

Legend

Start:Primary B+:Run:OCP/ Feedback:PWM Drive:5VDC Stand-by:Power NF from Micon:Relay ON:

DPM from Micom is LOW in deep sleep mode.When a CableCARD is installed this line willremain HIGH preventing deep sleep. With theCableCARD inserted the unit will remain instand-by mode.

DPM_ ON/OFF

POWER SUPPLY - DEEP SLEEP MODE


383 VDC

75VDC

15VDC

15VDC

14.29VDC

383VDC

383VDC

24VDC

P203 PINS 8 - 12

P204 PINS 8 - 12

P205 PINS 8 - 12

P206 PINS 8 - 12

24VDC

GND

P203 PINS 3 - 7

P204 PINS 3 - 7

P205 PINS 3 - 7

P206 PINS 3 - 7

GND

19VDC19VDC

P201 PINS 1, 2

12VDC

P200 PINS 9, 10

P201 PIN 9

12VDC

6VDC

P200 PINS 5, 6

P201 PIN 5

P202 PIN 11

6VDC

GND

6V DET

GND

160 VDC:383 VDC:Feedback:OVP:Drive:

LEGEND

POWER SUPPLY - RUN 160VDC & REGULATED 383VDC


383 VDC

75VDC

15VDC

15VDC

14.29VDC

383VDC

383VDC

24VDC

P203 PINS 8 - 12

P204 PINS 8 - 12

P205 PINS 8 - 12

P206 PINS 8 - 12

24VDC

GND

P203 PINS 3 - 7

P204 PINS 3 - 7

P205 PINS 3 - 7

P206 PINS 3 - 7

GND

19VDC19VDC

P201 PINS 1, 2

12VDC

P200 PINS 9, 10

P201 PIN 9

12VDC

6VDC

P200 PINS 5, 6

P201 PIN 5

P202 PIN 11

6VDC

GND

6V DET

GND

DPM from Micom is LOW in deep sleep mode.When a CableCARD is installed this line willremain HIGH preventing deep sleep. With theCableCARD inserted the unit will remain instand-by mode.

Legend

Run:5VDC Stand-by:Power NF from Micom:Relay ON:

POWER SUPPLY - AC DETECT & RELAY CONTROL


383 VDC

75VDC

15VDC

15VDC

14.29VDC

383VDC

383VDC

24VDC

P203 PINS 8 - 12

P204 PINS 8 - 12

P205 PINS 8 - 12

P206 PINS 8 - 12

24VDC

GND

P203 PINS 3 - 7

P204 PINS 3 - 7

P205 PINS 3 - 7

P206 PINS 3 - 7

GND

19VDC19VDC

P201 PINS 1, 2

12VDC

P200 PINS 9, 10

P201 PIN 9

12VDC

6VDC

P200 PINS 5, 6

P201 PIN 5

P202 PIN 11

6VDC

GND

6V DET

GND

B+:380 VDC Seince Line:OC/FB:Drive:Output:24 VDC Source:19 VDC Source:

LEGEND

POWER SUPPLY - 24VDC & 19VDC SUPPLY


383 VDC

75VDC

15VDC

15VDC

14.29VDC

383VDC

383VDC

24VDC

P203 PINS 8 - 12

P204 PINS 8 - 12

P205 PINS 8 - 12

P206 PINS 8 - 12

24VDC

GND

P203 PINS 3 - 7

P204 PINS 3 - 7

P205 PINS 3 - 7

P206 PINS 3 - 7

GND

19VDC19VDC

P201 PINS 1, 2

12VDC

P200 PINS 9, 10

P201 PIN 9

12VDC

6VDC

P200 PINS 5, 6

P201 PIN 5

P202 PIN 11

6VDC

GND

6V DET

GND

380 VDC:15 VDC:Drive:12 VDC Output:6 VDC Output:6 VDC Drive:OCP/FB:

LEGEND

POWER SUPPLY - 6VDC & 12VDC SUPPLY


TROUBLESHOOTING

DEFECTIVE COMPONENT

Make sure the signal is asupported format

Cr_in:

Hsync:

Y_in:

DE:

CLK:

Cb_in:

Vsync:

Data:

Frequency is differentaccording to format

59.94 Hz

Digital Data

R/B/G:

H:

V:

Fh_RGB,Fh_RGB differentaccording to format

Fh_Comp480i: 15.75kHz480p: 31.5kHz1080i: 33.75kHz720p: 45kHz

Fh_Comp

Fh_RGB

Fh_RGB

Fh_RGB

Check CXA2181 (IC501) power, OSC,comp1(#41/42/43), comp2(#1/2/17),

RGB(#33/34/35/36/37)

Check CXA2181 (IC501) outputs#23(Y_out), #22(Cb_out),

#21(Cr_out), #15(V), #16(H)

Check MC14053B (IC505)connector P101

Check CPLD (IC301) #96(HD), #95(VD)

Check MST3361 (IC603)power, #44(Y_in), #41(Cb_in),#46(Cr_in), #37(H), #38(V)

Check MST3361 (IC603) outputs#99(V-out), #98(H-out), #96(Clock),

Data (30bit), #97 (DE)

Check CY2309 (IC203)#1(REF), #15(CLKA4)

Check FMS6407 (IC610)power, #3(Y_in),

#5(Cb_in), #7(Cr_in)

Check CPLD (IC301)


TROUBLESHOOTING

DEFECTIVE HDMI

Is there snow on the screen?

Hsync:

DE:

CLK:

Vsync:

Data:

Video is normal, but no sound?

Check MST3361 (IC603) inputspower, OSC, #25/26(RX1C-, RX1C+),

#14/15(RX0C-, RX0C+)

Check MST3361 (IC603) outputs#99(V-out), #98(H-out),

#96(Clock), Data

CCheck CPLD (IC301) V-Sync,H-Sync output, #95(VD), #96(HD)

Check CY2309 (IC203)#1(REF), #15(CLKA4)

Power off and on(TV or STB/DVD...)

Check HDCP power (IC604)MST3361 (IC603), #69/70 (IIC)

Reload EDID data (IC605/IC606)

Digital Data

59.94 Hz

SDA:

SCL:

RX0C-/+:

RX1C-/+

Freq: 50kHz~400kHzNO

YES

NO

YES

YES

YES

YES

SEE NEXT PAGE


TROUBLESHOOTING

DEFECTIVE RF

Check RF input

Check main pictureand PIP

Check the NTSC tuner5V, 33V, & Video Out

Check CXA2069Power Pins - TV

Check tuner connectors

Check Upd64015Power Pins, OSC, AYI1

Check FMS6400Power Pins - Yin

Check CY2309CLKA4

Check Signal Data74FCT244 1Y1, 3Y2

Check CPLDHD, VD

Check uPD64015HD, VD

VD:

CLK:

Rock:

HD:

VD:

HD:

13.5 Mhz13.5 Mhz

15.75 kHz

59.94 Hz

27MHz

Digital Data

Digital Data

59.94 Hz

IC701 - 13.5 MhzIC705 - 27 MHz

15.75 kHz

15.75 kHz


TROUBLESHOOTING

DEFECTIVE RF 2

Check the output of the tuner (TU1302) #6(5V)

Main of D/W Mode normal in cable TV mode?

Check the output of the tuner (TU1302) #8(33V)

Check the IIC control of the tuner (TU1302)

Is the output of the tuner (TU1302) #16 normal?Replace the Tuner (TU1302)

Sub(PIP) of D/W Mode normal in digital TV mode?

Check the output of thetuner (TU1300) #3/11(5V)

Check #16 of the IIC control of thetuner (TU1300)

Is the output of the tuner (TU1300) #16 normal? Replace the Tuner (TU1300)

YES

YES

YES

NO

NO

YES

NO

NO

YES


TROUBLESHOOTING

DEFECTIVE RF 3

When the tuner output is normal:

Main of D/W Mode normal?

Check CXA2069 (IC101) #42(9V)

Is the output of CXA2069 (IC101)#56 normal?

Is the output of CXA2069 (IC101)#44 normal?

Sub of D/W Mode normal?

Check CXA2069 (IC101) #42(9V)

Is the flat cable between P101 & P1612connected properly?

Is the output of FMS6400(IC702) normal?

Check UPD64015 power (1.5V/3.3V)(IC701)

Check UPD64015 (IC701) digital outputY(10bit), C(10bit), H/V, FID

Is the output of FMS6400(IC704) normal?

Check UPD64015 (IC701) power (1.5V/3.3V)

Check UPD64015 (IC701) digital outputY(10bit), C(10bit), H/V, FID


TROUBLESHOOTING

DEFECTIVE DIGITAL

Check RF input

Check ATSC/NTSC/OOBTuner (TU1300) 5V, IF out

Check LGDT3703 (IC1305) inputspower, OSC(25MHz), IF pin

Check CPLD (IC305) inputsCLK, SOP, Valid, Error, Data

Check POD ControllerLGDT3502B (IC1200)

CADTV

TPCLK

DTV

Check LGDT3703 (IC1305) outputsCLK, SOP, Valid, Error, Data

Check CPLD (IC305) outputsCLK, SOP, Valid, Error, Data

Check HD2.4 LGDT1102F inputsCLK, SOP, Valid, Error, Data

Check CPLD (IC305) inputsCLK, SOP, Valid, Error, Data

TPSOP

TPVALID

nTPERR

TPDATA


TROUBLESHOOTING

NO AUDIO - HDMI

NO AUDIO - COMPOSITE & COMPONENT

Check the audio input connections Check component 1/2/RGB audio input

Check CXA2069(IC101) in/outputs#2(V_L), #4(V_R), #23(FV_L), #25(FV_R),

#52(AV_L_OUT), #54(AV_R_OUT)

Check MSP4450K(IC202) outputs#36(SC1_R), #37( )SC1_L

Check connectorP103: #16, #18

Check LGDT1102F(IC402) inputsR413(LRCH), R414(LRCK), R415(SCK)

Check MSP4450K(IC202) outputs#56(AV_L), #57(AV_R)

Check MC33078(IC1001) in/outputs & power#8(9V), #2/6(input), #1/7(output)

Check CS5331(IC1000) in/outputs & power#7(5V), #5/8(L/R input), #1(LRCH), #2(SCK),

#3(LRCK), #4(MCLK)

Check MSP4450K(IC202) inputs#53(COMP1_L), #54(COMP1_R), #50(COMP2_L),

#51(COMP2_R), #47(RGB_L), #48(RGB_R)

Continue to the No Audio-General section

Check CS8415A(IC1006) in/outputs#14(HDMI_SPDIF), #16(SCK), #17(LRCK),

#18(SPDIF_OUT), #10(SPDIF_CLK)


Check EPM570T144(IC301)

Check the HDMI connection

Check MST3361(IC603) outputs#125(HDMI_SPDIF_OUT)

Check LGDT1102F(IC402) inputs Check SPDIF out (R1035)

SPDIF BYPASS


TROUBLESHOOTING

NO AUDIO - RF

NO AUDIO - DIGITAL

Check the Antenna connection

Check the NTSC Tuner's (TU1302)#4(33v), #7(5V), #18(5V), #16(SoundIF)

Check Connector P1611(#2)

Check MSP4450K (IC202) inputs#67 (M_SIF)

Check MSP4450K (IC202) outputs#36(SC1_R), #37(SC1_L)

Check connectorP103(#16,#18)

Check MC33078(IC1001) in/outputs & power#8(9V), #2, 6(input), #1, #7(output)

Check CS5331(IC1000) in/outputs & power#7(5V), #5/8(L/R input), #1(LRCH), #2(SCK),

#3(LRCK), #4(MCLK)

Check LGDT1102F(IC402) inputsR143(LRCH), R414(LRCK), R415(SCK)


LRCK:

MCLK:

48kHz

12.288MH

Check AT/NT Tuner (TU1300)#3/11(5V), #24(IF_N), #23(IF_P)

Check LGDT3703(IC1305) inputs#22(IF_P), #23(IF_N)

Check Mux CPLD (IC305)

Check LGDT1102F (IC402)

Check LGDT3703(IC305) outputs#44/45/47/49/50/52/54/55(VSB_DATA),

#57(ERROR), #59(VALID), #61(SOP), #62(CLK)


Check the Antenna connection


TROUBLESHOOTING

NO AUDIO - GENERAL

Check connector P1611#10(SCK), #12(LRCK), #LRCH(LRCH)

Check MSP4450K (IC202) power pins#12/13/65/66(5V), #39(8V)

Check TAS5122 (IC403) outputsIC402: #34/35/38/39(LEFT), #46/47/50/51(RIGHT)

Check speaker output waferP403(RIGHT), P404(LEFT)

Check NSP2100A (IC401)PWM output: R804, R805(LEFT), R802, R803(RIGHT)

PWM mask: R1211(3.3V)

Check Speaker

Check LGDT1102F (IC402) I2S outputsR434(LRCK), R435(SCK), R441(LRCH)

Check MSP4450K(IC202) inputs#19(SCK), #20(LRCK), #22(LRCH)

Check MSP4450K(IC202) outputs#4(SCK), #5(LRCK), #6(LRCH), #74(MCLK)

Check LGDT1102F (IC402) SPDIF outputsR436(IEC958_OUT)

Check EPM570T144 (IC301)

Check SPDIF out (R1035)

Check MSP4450K (IC202) outputs#33(MNT_R_OUT), #34(MNT_L_OUT)

Check MNT_OUT jack (J101)

ANALOG OUTDIGITAL OUT

MONITOR OUT


TROUBLESHOOTING

CABLECARDA cable card is a PCMCIA card distributed by cable operators and inserted into a Digital Cable Ready(DCR) TV to enable premium services like digital cable. It provides authorization, CA (ConditionalAccess) decryption and CP (Copy Protection) encryption functions for the consumer’s DCR TV. Notethere is a seperate Training manuala nd training class devoted to DCR.

DIAGNOSTICSThe table below describes how to navigate the CableCARD menu. This list of selectable CableCARDoptions will vary, depending on your cable service provider or CableCARD manufacturer. Also, belowtable shows how to access diagnostic screens for the DCR TV. Many of these screens are notdescribed in the User Manual.

CABLECARD TROUBLESHOOTING• It is recommended that installers bring along a couple of CableCARDs for troubleshooting. This

will help eliminate the CableCARD as a possible problem during the installation.• Check that the Digital Cable Ready (DCR) TV, also referred to as a HOST, is functional without

a CableCARD. The DCR will display all non-encrypted analog and digital content without a cardinstaqlled. This test will eliminate basic TV circuitry as a possible problem.

• Check that the CableCARD is inserted properly. When inserting cable card push carefully butfirmly until you feel the card click into place.

• Verify RF from Cable System Tap: The installer can also connect a cable set top box to confirmreception of encrypted digital services. This will help eliminate the RF signal as a possibleproblem.

• If the first CableCARD installed does not result in a User Interface screen (also referred to asMMI screen) within 5 - 7 minutes, try unplugging the AC Power cord of the DCR and recon-necting it (to reset the DCR). If this is still unsuccessful, try another CableCARD.

• Look closely at the CableCARD device to ensure that none of the pinholes are blocked orclogged. Use a flashlight to check the CableCARD slot on the DCR TV to ensure that there areno bent pins.

• If the second CableCARD is successful, make sure the CSR or Dispatcher knows the new MAC IDand CableCARD ID to complete the installation. The original card should be marked accord-ingly and returned for repair.

Maker Diagnostic Type 1st 2nd 3rdALL CableCARD main menu press MENU Select CABLE -> ENTER N/AALL Host D i agno st i cs press MENU Select CABLE Press 0 three timesMotorola CableCARD pairing status press MENU Select CABLE -> ENTER CableCARD Pairng -> ENTERMotorola Network status press MENU Select CABLE -> ENTER Network Setup -> ENTERMotorola CableCARD status press MENU Select CABLE -> ENTER CableCard Status -> ENTERMororola CA status press MENU Select CABLE -> ENTER Conditional Access -> ENTERNDS CableCARD pairing status press MENU Select CABLE -> ENTER CableCARD Pairng -> ENTERNDS Network status press MENU Select CABLE -> ENTER Network Setup -> ENTERNDS CA status press MENU Select CABLE -> ENTER Conditional Access -> ENTERSA CableCard diagnostics press MENU Select CABLE -> ENTER SA125 -> Diag -> ENTERSA CableCard pairing status press MENU Select CABLE -> ENTER HOST ID -> ENTERSA Copy protection information press MENU Select CABLE -> ENTER CP Screen -> ENTER

CableCARD Diagnostic Screen


TROUBLESHOOTING

• If the second CableCARD fails to bring up the User Interface screen, the technician shouldrefer to the diagnostic menus on the DCR for further troubleshooting. The technician can pullup the User Interface screen manually through the menu choices.

• If the technician is able to install the CableCARD device and access the User Interface screen(also referred to as MMI screen), and has relayed the information to the dispatcher, but is stillnot receiving encrypted programming, this programming may be protected through the use ofcopy protection directive. Ensure that the information passed to dispatch is correct. Relayagain the Host ID, CableCARD ID and Data ID (Motorola only). Dispatch will send a hit to theCableCARD once the information is checked and verified. The CableCARD must be paired to theHost before copy protected programming can be displayed. Note that it may take severalminutes from the time dispatch sends the authorization before it reaches the DCR device. TheMMI screens should be checked to verify if the authorization has been received. For SA sys-tems the host- pod pairing screen should say “Authorization Received.” For Motorola theConditional Access MMI State parameter should say “Subscribed”. (These should be verified byPOD Manufacturers or cable companies.)

• To confirm the Headend Validation for displaying the encrypted channel, the technician shouldcheck the CableCARD menu. For SA systems, the CableCARD Copy Protection Information menushould say “Authorization Received”. For Motorola systems, the Conditional Access menushould say “Valid xx (2 digit)”.

• If encrypted programming is still not displayed, installer should check the status of thefollowing and refer to the chart on the pervious page.

Cable Channel List : ReadyCableCard : InsertedFDC status (OOB Status) : LockSNR( Signal to Noise Ratio) : higher than 12 dB is normal range

- 42 -

Directview LCD Training 43 Disassembly

DISASSEMBLY

DISSASEMBLYEXPLODED VIEW

LOCATION PART NUM DESCRIPTION30919E0042G Cover Assembly, 47LB1DA-UB(CKD) LP62H 47" C/A ASSY FOR SET30919E0042B Cover Assembly, 47LB1DA-UB LA61C 47"

20 EAJ31412401 LCD,Module-TFT, LC470WU1-SLA1 1920X1080 550CD3809900160E Cover Assembly, 47LB1DA-UB LA61C 47" FOR CKD(MX)3809900160B Cover Assembly, 47LB1DA-UB LA61C 47"3043900027C Base Assembly, STAND 47LB1R-ZH(CKD) LP62H BLACK3043900027A Base Assembly, 47LB1

50 EBR30403401 PCB Assembly,Sub, CONTROL KEY TOTAL ASSY60 EBR30403501 PCB Assembly,Sub, INDEX TOTAL ASSY70 AGU30990804 Plate Assembly, ASSY METAL MAIN FRAME(47LB1,UB,CKD)

AGU30990801 Plate Assembly, ASSY METAL MAIN FRAME(47LB1)80 EBR30366601 PCB Assembly,Sub, SUB T.T LA61B 47LB1DA-UB ALL DE-INTERLACE B/D90 6401900127F Speaker Assembly, 47LB1 SIDE LEFT(400MM)

100 6401900127E Speaker Assembly, 47LB1 SIDE RIGHT(1900MM)110 EAB30830301 Speaker,Woofer, K7040303/4 FERRITE 15W 8OHM 80DB 120HZ120 EAB30830301 Speaker,Woofer, K7040303/4 FERRITE 15W 8OHM 80DB 120HZ130 EBR30402901 PCB Assembly,Sub, SUB T.T LA61B 47LB1DA-UB ALL SIDE A/V TOTAL

AGU30678503 Plate Assembly, SHIELD METAL,MAIN(47LB1DA-UB,CKD)AGU30678502 Plate Assembly, SHIELD METAL,MAIN(47LB1DA-UB)

150 EBR30363701 PCB Assembly,Sub, MAIN2 T.T LA61B 47LB1DA-UB ALL Analog B/D TOTAL160 EBU30309001 Main Total Assembly, 47LB1DA-UB BRAND LA61B-digital170 6709900018B Power Supply Assembly, 4655E FREE H3/E2 LCD LCD YY LB LC180 4810900029A Bracket, MOLD ABS REAR AV 47LB1D SP02PC ABS (47)190 4810900041A Bracket, MOLD ABS SUPPORTER 47LB1D AB00EA

30

10

40

140


DISASSEMBLY

BACK CABINET REMOVAL

1) Remove the stand by removing the 6screws holding it on.

2) Remove the 13 screws holding the backcover on.

3) Now re-install the four screws that se-cure the stand.

4) Remove the 12 screws that hold theshield on.

5) Remove the shield, but be careful not to damage thecable card ejection bar.

Stand Screws


DISASSEMBLY

BOARD DESCRIPTIONS

DIGITAL BOARDThe digital board contains the main micro, cablecard slot, tuners, digital connections, and videoprocessing.

Digital Board Analog Board

Power Supply

LampBallast

De-interlacer

SideInputs

ControlPanel

POWER SUPPLYOutput Voltages:

+5V 2A+3.4V 5A+6V 5A+12V 3A+19V 3.5A+24V 12A


DISASSEMBLY

DE-INTERLACERThe FLI8668 offers high integration for advanced, dual-channel applications of picture-in-Picture (PIP) andPicture-by-Picture (PBP). Two video decoders with 3DComb filters and two channels of DCDI Processing, andtrue 10-bit performance provide the highest quality picturefor a two channel application.

Special performance features such as the Faroudja DCDICinema® video format converter, Blue Stretch, DDR

Memory with a read write of 10 bits per pixel, and flexible sharpening Algorithms provide unparalleledperformance. The video quality level that was exclusive to Faroudja® Home Theatre Systems is nowavailable in a single-chip solution.

The FLI8668 also comprises an integrated Analog Front End (AFE) that includes two Triple ADC’s across-point switch, and two Faroudja® Intellicomb™ 3D Comb Filters. The flexible AFE ensuressimple PCB design with direct connections to TV tuners and input video connectors. Thus, theFLI8668, for a single LCD TV Chassis, is able to support worldwide standards. For regional variations,only a connector and firmware change are required.

The integrated VBI data-slicer and decoder eliminate the need for external components Resulting insignificant cost reduction. The FLI8668 supports many world wide VBI standards for applications ofTele-text, Closed Captioning, V-Chip, and other VBI Services. An embedded microprocessor and aversatile OSD in a single device will facilitate rapid development of a reliable and attractive product.The FLI8668utilizes the common “Cortez Family” firmware making migration easy and effortlessacross different hardware platforms within this family of Video Processors.

ANALOG BOARDThe analog board consists of the rear connections forexternal inputs and the Monitor output connections.The Analog and Digital RF Connections are also presenton the Analog board.

CXA2069 -The CXA2069Q is a 7-input, 3-output audio/video switch featuring I²C bus compatibility for TVs.This IC has input pins that are compatible with S2protocol.

CXA2181- IC Video Switching device. This IC selects thedesired Video Input source and provides the I²C buscompatibility to deliver video data to the HDII Videodecryption IC.


DISASSEMBLY

2) Remove the 8 black larger screws holding theframe to the LCD panel and the 16 screws onthe outside of the frame holding it to thecabinet.

3) Now the ballast and LCD driver covers can beremoved.

There are 4 seperate ballast boards and 1LCD driver board.

The LCD panel is not directly atached tothe cabinet and can be lifted out andreplaced if needed.

LCD Driver

Ballast

There are two rows of lamps behind the screen.At this time, the lamps are part of the panelassembly and can’t be replaced individually.

FRAME REMOVALRemove the frame to gain access to the lamp ballasts & LCD driver.1) First remove the 4 screws holding power supply down to gain access to the two screws under-

neath.

© Copyright 2007 LG Electronics, Inc.Printed in the USA

Documents

47LB1DA 1080P 1 LCD 2007 Con Diagramas