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Slide # 1

DLP PTV Repair CourseOutline

Repair Policy 3

Disassembly / Layout / Connectors

Start Up Sequence 9 Power ON Sequence

Start Up Circuit Problems

TV Protection (Shutdown) 13 Error Code chart

Protect Circuits for board isolation

Audio Troubleshooting 26

Video Troubleshooting 27

Service Information 36

Service Mode Information White Balance

Digital Station S N R

TV Reset Operations

Adjustments after Engine Replace 42

2006-7 Models:

PT-56DLX76

PT-61DLX76PT-56DLX26

Instructor: Herb Chin; National Training

2006

inceptionyear

slide

Pwr temp lamp iris IR in

LEDs

1. High Contrast Range (on/off Iris)

2. 1080 P Native Resolution Picture

3. Ballast + PS + Light Engine Pkg.

4. Tuner Fan 1 runs 24/7 (TV guide, C card)

Digital Light Processing and DLP are trademarks of Texas Instruments Incorporated.

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Slide # 2

Access & Repair Policy

Two block Repair Policy:

1. TV Tuner Block

2. Projection Unit w

Pwr Supply & Ballast

1. TV Tuner

Blk.

2.

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Slide # 3

Table of Contents - PTxxDLX76 Repair

Slide Slide

Repair Policy 3 Disassembly 4

Connector Layouts 7

Start Up

o Power On Sequence 9o Dead Set 10

o Power LED blinks continuously 11

TV Protection (shutdown)o Error Code List 13

o Power LED 1X Code (excessive voltage) 14o Power LED 2X Code (no fan rotation) 15

o Power LED 3X Code (no DT 5Vdc) 16

o Power LED 5X Code (No Communication) 17

o Power LED 6X Code (No Color Wheel) 18

o Power LED 7X Code (Lamp Door Sw) 19o Power LED 8X Code (No Lgt Eng Cont.) 20

o Temp LED continuous (Excess Temp) 22

o Lamp LED 1X Code (No Lamp) 23

o Lamp LED 2-4X Code (Lgt Eng Iris NG) 24

No Audio 26 Video Problems

o No Video 27

o Identifying Misc Video Problems 29

Generating a Lgt Eng Pattern 31

Generating a Tuner Blk Pattern 32 Service Information

o Operations Possible 36

o Access 37

o Navigation 38

o White Balance 39

o Digital Station SNR Level 40

Adjustments after Light 42

Engine Replacement.

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Slide # 4

Panasonic DLP PTV Disassembly - rear viewDisassembly : After removing the rear cover, either remove -

TV Tuner Block - located at the left from the back. Pull after removing screws a-e. or

Power Supply / Ballast Block (not shown) with the light Engine (shown located at the

right). Pull out after removing screws 1-5.

Note that the blocks are linked at the center with recessed screws.

The therm fuse, and 2 of the 3 fans are located in the light engine.

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TV Tuner & Projection Blocks

Woofer Box

TV Blk

Power PCB

Projection Blk

Ballast unit

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Slide # 6

Table of Contents - PT-xxDLX76 Repair

Slide Slide


Connector Layouts 7

Start Up













o No Video 27





o Access 37

o Navigation 38

o White Balance 39



Engine Replacement.

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Slide # 7

Light Engine Connector Layout

Rear

View

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Slide # 8


Slide Slide


Connector Layouts 7

Start Up













o No Video 27





o Access 37

o Navigation 38

o White Balance 39



Engine Replacement.

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Slide # 9

Power ON Sequence

I Plug in Sequence

1. Pwr RL801 clicks on.

2. Main PS starts for sec.

3. Fan 1 runs for sec.

4. RL801 clicks off.

II Power ON Sequence

1. Power Relay RL801 clicks on.

2. Power LED blinks green.3. Color Wheel starts turning.

4. All 3 Fans come on.

5. Ballast Relay RL802 clicks on.

6. Ballast / Lamp turns on.

7. Iris Shutter closes & opens (sound

is from left of the therm fuse).8. Station LED on Tuner board lights.

9. Front panel blue Iris LED lights.

10. Power LED turns solid orange.

11. Audio & Video Unmute.

III Power Off Sequence

1. Audio and Video Mute.

2. Blue Iris LED goes off.3. Power LED blinks red.

4. Lamp goes off.

5. Fans 2 & 3 go off.

6. Ballast relay RL802 clicks off.

7. Fan 1 and RL801 remain on

with AC input.

8. Tuner LED is lit only if on a

Dig Station.

9. TV is off.

lamp

cw

PS

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PT DLX76 i D d S t

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Slide # 10

PT-xxDLX76 series - Dead Set

Symptom TV set is dead, no response to either power on button. No relays click.

Cause: There is no standby voltage to the micro or the micro to the relay path is open.

Troubleshooting Both the TV tuner block and the Light Engine Block are suspect.

1. If the line cord AC plug pins do not measure approx 1.8k ohms or there is no voltage at power supply

CN1003/pins 1 or/and 2 at plug in, replace the power supply in the light engine assembly.

2. If there is no voltage at power supply CN1003/pin 3 when the power button is pressed, replace the TV

tuner block.

DLPPT-xxDLX76

P LED bli k C ti l

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Power LED blinks Continuously

Symptom: After powering on, the power LED continues to blink green as though starting up but never does.

Cause: Eventually the TV will shutdown and the LAMP LED will blink 1X (time) and repeat, indicating a lamp

failure.

Troubleshooting:The problem is either the TV tuner Block or the PS Board / Light Engine.

If the spark gap on the ballast board does not light, check for the two necessary voltages into the ballast. If

missing, follow the troubleshooting procedure in the Shutdown, Lamp LED blinks 1X.

CN2006

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T bl f C t t PT DLX76 R i

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Slide # 12


Slide Slide


Connector Layouts 7

Start Up













o No Video 27



Generating a Tuner Blk Pattern 32

Service Informationo Operations Possible 36

o Access 37

o Navigation 38

o White Balance 39



Engine Replacement.

Sh td E C d

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Slide # 13

Shutdown Error Codes

Shutdown Error Codes

Power

LED

Lamp

LED

Temp

LED

Check

Priority

Cause Slide

#

Suspect

Block

None None None No standby voltage 10

14

15

16

17

18

19

20

23

24

22

Tuner

1 2 DT12V, DT5V, 9V, 3.3V or 2.5V OVP or OCP. both

2 4 No rotation detected in one of 3 fans. both

3 3 Loss of DT5V line from the base board. both

5 5 Loss of I2C reply from major ICs on the Main bd. Tuner

6 6 No color wheel rotation detected. both

7 1 Lamp cover switch not shorted. both

8 7 Light Engines DLP IC is not ready. both

1 Lamp ignition chain failure or thermal fuse is open. both

2, 3,

or 4.

Mech Iris failure - Brightness range is reduced. Light

Eng.

1 Excessive temperature is detected. both

Check Priority means that if two error codes occur, the one with the lower priority number will display.

DLPPT-xxDLX76

TV Shutdown Power LED blinks 1X

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Slide # 14

TV Shutdown - Power LED blinks 1X

Symptom: After powering on, the TV shuts down then the power LED blinks 1X pauses and repeats.

Cause: Excessive voltage or excessive current (low voltage) detected on the DT+9V, DT+5V, Sw 2.5V, or

Sw 3.3V outputs sensed at the main board.

Troubleshooting:The problem is either in the PS / Light Engine or TV tuner Blk.

1. At power on, if 9Vdc (normal) is present at CN2704/pin 2 before shutdown, replace the TV tuner block.

2. If there was less than 4V at CN2704/pin 2 or higher than the normal 9Vdc, replace the PS / light engine.

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Troubleshooting:

The problem is either a defective fan, the TV tuner Blk., or Light Engine.

1. Fan Stopped? Fan 1 CN6010/pin 1 low? Replace the TV tuner blk. Normal ? Replace fan 1.

Fans 2 or 3 CN2008/pin 1 or CN2008/pin 1 voltage low? Replace light engine. Normal? Replace fan.

2. All fans rotate? Measure pin 3 of all the fan connectors (CN2007-8 & CN6010). The fan connector that does

not measure 0Vdc when the fans rotate (at turn on) indicates that fan is bad even though it is rotating.

3. If no fan rotates, and the 12V power supply voltage at CN1003/pin 9 is missing, replace the power board *. If

present, unplug CN2009 and press power on. If fan 1 rotates now, replace the light engine. Still no rotation?

Change the TV block. * If PR1001 is open suspect a short in the light engine or TV block.


Cause: Fan rotation has not been detected by one or more fans.

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Troubleshooting:

The problem is either in the TV tuner Block or PS / Light Engine.1. If voltage at light engine CN2001/pin 1 is 12Vdc (normal) before shutdown, replace the TV block.

2. If the voltage at power supply CN2001/pin 1 is 0Vdc (abnormal) at power on, unplug CN2001 and measure

power supply CN1201/pin 6 at power on. If this voltage is present, replace the light engine.

3. If CN1201/pin 6 is still 0V, check for an open PR1001 fuse on the power supply board. Fuse Open? Replace

the TV tuner block and the fuse. Fuse OK? Replace the power supply / light engine if the fuse is OK.


Cause: Loss of DT5V source or a load on the DT5V line to the tuner.

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Cause: The Main Microprocessor IC6001 is not able to communicate with 3 major video ICs all on the main

board.

Troubleshooting:

The problem is main board.

1. Replace the TV block that contains the main board.

DLPPT-xxDLX76

TV Shutdown Power LED blinks 6 X (times)

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Cause - No Color Wheel Rotation Detected

When color wheel rotation is beyond speed range or stops, the TV will turn off.Troubleshooting start with the DC voltage measurement in step 1 then use a DVM set to measure AC voltages.

1. if +12Vdc is missing from CN2001/pin 1 (plug to the light engine) recheck it at PS CN1003/pin 6. Replace the

Power supply-Light Eng if missing voltage at both places or the TV tuner block if present only at one place. 2.

Replace the color wheel if there is AC input but no AC output signal - measure the AC voltage input at

CN2000/pins 1-3 (input) and at CN2006/pin 3 (output) . 3. Replace the light engine if input & output voltage are

both OK.

TV Shutdown, Power LED blinks 6 X (times)

Color Wheel & Motor

P/N = LSDL0354

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Slide # 19


Troubleshooting:The problem is Sw, TV tuner

Block or Light Engine.

1. Unplug the TV from AC. From

the front of the TV make sure the

lamp cover protrusion tab is still

present Reinstall the lamp cover.

2. If CN2003/pin 1 to ground is

not 0 ohms replace the cover

switch (chassis). If CN2002/pin

31 is not 0 ohms to ground,

replace the light engine. IfCN2002/pin 31 is 0 ohms replace

the TV tuner block.


Cause: The lamp door switch is open or the lamp door plastic is broken off.

Lightengine

Bd.

TV Front

protrusionLamp

Cover Sw

p/n =

KOL1BA000114

31violet

DLPPT-xxDLX76

TV Shutdown Power LED blinks 8 X (times)

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Cause - Light Engine main DMD IC Controller IC detects a bad input condition.

When IC2008 (DMD control IC) does not send (H: ready) to IC6001, IC6001 judges there is something wrong

with IC2008 and IC6001 turns off the TV.

Troubleshooting -

Check power supply voltages at CN2001/pin 1& CN2009/pin 1. If all voltages are present, replace the Light

Engine Assembly.

If a voltage is missing, unplug the CN2001 connector and measure the plug end pin again (wire from the TV

block). If voltage is now present, replace the light engine. If the voltage is still missing, check fuse PR1001. 0

ohms (OK)? Replace the Pwr Supply Bd. Open? If CN2001/pin 1 to cold chassis gnd. is less than 1.5k ohms,

at the Lit Eng, replace the Light Engine. If the resistance is higher, replace the TV block. [Use the 2k ohm scale]

TV Shutdown, Power LED blinks 8 X (times)

Power LED eight blinks (IC6004)

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Slide # 21

Table of Contents PT xxDLX76 Repair

Slide Slide

Repair Policy 3

Disassembly 4

Connector Layouts 7

Start Upo Power On Sequence 9

o Dead Set 10







o Power LED 7X Code (Lamp Door Sw) 19

o Power LED 8X Code (No Lgt Eng Cont.) 20




No Audio 26

Video Problemso No Video 27





o Access 37

o Navigation 38

o White Balance 39

o Digital Station SNR Level 40 Adjustments after Light 42

Engine Replacement.

TV Shutdown Temp LED blinks continuously

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Slide # 22

TEMP LED blinks

Cause - TV / Color Wheel Temp = High

When the temperature is too high (64oC.) at the color wheel assembly where it is sensed, the TV will

turn off.

Troubleshooting procedure

1. Remove the CN2009/pin 8 wire from the plug and plug the connector back in (without pin 8).

2. Turn the TV on.

3. If the TV shuts down, the problem is on the Main board. Replace the TV block.

4. If the TV works OK now, replace the color wheel assembly that contains the temp IC.

TV Shutdown, Temp LED blinks continuouslyColor Wheel Assembly

P/N = LSEP3206A

DLPPT-xxDLX76

TV Shutdown Lamp LED blinks 1 X (time)

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Slide # 23

Cause - No Lamp current Detected

Five seconds after the power button is pressed, the mercury vapor lamp should light. If the Lamp does not

light, CN9504/pin 1 = H is input to Microprocessor IC6001 to shut the TV off.

Troubleshooting / isolation procedure

1. The lamp is bad if the spark gap device on the ballast board lights (5 secs after power on).

2. If the spark gap does not light, measure the DC voltage at CN9504/pin 4 (3V to chassis gnd). and betweenCN1301/pin 1 (380V) & pin 4 (H gnd). If the CN1301 voltage is missing, replace the Pwr Supply LE block.

3. If both voltages (CN9504 & CN1301) are correct, the ballast is bad. Replace the ballast / LE block.

4. If CN9504/pin 4 voltage is 4.2 - 5Vdc, check for 0.4Vac voltage at CN2006/pin 3 (light engine).

a) Present? - replace the TV block.

b) Missing? - replace the light engine.

TV Shutdown, Lamp LED blinks 1 X (time)

LAMP LED blinks

Light Engine Top

DMD Bd.

CN2006

DLPPT-xxDLX76

Lamp LED blinks 2-4 X (times), No Shutdown

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Cause

The 30% brightness reduction Iris mechanism located in the Light Engine is not working. The electronically

controlled mechanical Iris mechanism works to achieve a high white to black picture contrast ratio.

Troubleshooting

This iris malfunction (2-4 blinks) will not shutdown the TV but will prevent the front panel blue Iris LED from

lighting. The Dynamic Iris can not be turned on from the customer menu [Menu / Picture 2of 2 page / Adv. Adj

/ Dynamic Iris / On]. The iris is spring loaded in the open position so a potential failure will leave the iris open.

If the TV functions otherwise (menu commands and channel changing) work, the serial data path is OK and the

problem is in the Light Engine. Replace the light engine. Prolonged non operation of the iris circuit will not

damage the TV.

Lamp LED blinks 2 4 X (times), No Shutdown

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Slide # 25

Table of Contents PT xxDLX76 Repair

Slide Slide

Repair Policy 3

Disassembly 4

Connector Layouts 7


o Dead Set 10



o Power LED 1X Code (excessive voltage) 14

o Power LED 2X Code (no fan rotation) 15










o No Video 27





o Access 37

o Navigation 38

o White Balance 39


Engine Replacement.

No Audio

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Slide # 26

Symptom: No or distorted Audio. The picture is OK

Cause: Reduced supply voltage or audio process defect.

Troubleshooting: At power on, if the two voltages from the power supply are OK (CN1001/pin 2 = 18V &

CN1003/pin 6 = 12Vdc), replace the TV tuner block. This voltage is OK if the fans come on. If CN1001pin 2

voltage is low or missing, unplug that connector and re-measure the voltage at the power supply board

(CN1001/pin 2 socket) at TV on. If normal, replace the TV block, if still missing/low, replace the power supply

board / light engine.

DLPPT-xxDLX76

No Video

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Slide # 27

Symptom: TV powers on but the screen is white or black with sound.

Cause: A break anywhere in the video path.

Troubleshooting:

The problem can be in either the TV tuner block or light engine.

1. Press the menu button. If any image (menu or volume bar) appears on the screen the

light engine block is OK. Replace the TV tuner block.

2. Check other inputs for video. This can be done even though there is no picture by first

pressing channel button, then pressing the TV/Video button, then selecting the input

number from the list at the right. If there is video present, replace the TV tuner block. If

still no video, the light engine is suspect but input voltages must be confirmed in step 3.

3. If there is voltage at light engine CN2001/pin 1 and CN2009/pin 1, replace the light

engine. If a voltage is missing, replace the TV tuner block if power supply CN10016 is

correct at 12Vdc. 0Vdc? Change the power supply board/light engine.

Inputs:

1. TV (press ch up once)

2. Component 1

3. Component 1

4. HDMI 15. HDMI 2

6. Video 1

7. Video 2

8. Video 3

9. PC

DLPPT-xxDLX76

No Video, Audio OK

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Slide # 28

,

Symptom: After powering on, the TV audio comes on but the screen remains dark. The lamp only lights

momentarily at plug-in, turn-on. All 3 fans rotate.

Cause: Serial data or clock instruction is missing into to the light engine micro IC2008.

Troubleshooting:

The problem is either the TV tuner Block or the PS Board / Light Engine.

If there is data & clock at the light engine CN2009/pins 8 & 9, replace the light engine assembly. If there is

no data or clock presence at power on, inspect the CN6000 / CN2009 cable and if good, replace the TV

tuner block if no OSD, video, or menu appears.

CN2006

DLPPT-xxDLX76

No Color or Distorted Video (all inputs)

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Slide # 29

( p )

Symptom - Color loss, dominate color, missing color, color splotches, etc.

Troubleshooting strategy: If the internal pattern is OK, the video problem is before the point of pattern generation.

For example if the DDP pattern is OK, the problem is before in the TV block or the 31 pin cable. If the CW pattern

is OK, the problem is only in the TV block.

Patterns generated from the

Main Bd. in the Factory ServiceMode / Other / CW-Index Delay

Patterns generated from the

Light Engine in the FactoryService Mode / Other / DDP

O T H E R 1 / 1

O P T H P O S I 8 0 0 0

O P T V P O S I 8 0 0 0

C W I N D E X D E L A Y 0 0 E DW B

D D P

G C : 0 5 0 6 0 1 0 1

Main Bd.

TV Block

Light

Engine31 pincable

Digital Video DDP

Gen

CW

GenVideo

inputs

Main

Sub

OSD

OSD Location: Work Service Mode / Factory Service Mode / Other / CW Index or DDP (press ASPECT)

Start: In the next 4 slides you will go to the Work Service Mode and navigate to the desired pattern.

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Slide # 30

CN2002

Video

inputsTV tuner

Block Light Engine

Troubleshooting:

The problem could be in the TV or Light Engine Blk.Strategy - A white pattern can be generated at the TV tuner block just before leaving along the 31 pin

cable and another white pattern can be generated in the light engine block. If the symptom is not present

in the generated pattern, the problem is before the point where the good pattern is generated.

31 pin cable

screen

Tuner / Menu

PS

14 pin power

CN1003

lens

menu

Video

DDP3021 Pattern Source

CW Index Pattern Source

Component &Composite

Generating the White patterns:

In the following steps you will enter the work service mode and select one of the white patterns.

1. Turn the TV on. 2. Work Mode Entry - Hold the TVs front panel Volume down button and the remotes

RECALL button for 5 seconds until Work Mode appears on the bottom of the TV screen.

3. Factory Service Mode Entry Press the remotes top VCR mode button and then the remotes RECALL

button to enter the Factory Service Mode. Press the top TV mode button and use the arrow down button to

highlight Other on the screen.

4. Press the OK button to enter/select Other. 5. Again use the arrow down button to highlight either the DDPor CW pattern. 6. Press ASPECT to enter. 7. Press RECALL to return for the other pattern.

Conclusion -

1. If the CW white pattern generated is clean without distortion, the problem is in the TV tuner block.

2. If the problem still appears on the DDP white screen, the problem is in the light engine.

3. If the CW white pattern has another problem (different than the original symptom), replace the TV tuner block.

DLPPT-xxDLX76

Actual DDP internal patterns from the Light Engine

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Slide # 31 DLPPT-xxDLX76

ASPECT

O T H E R 1 / 1

O P T H P O S I 8 0 0 0

O P T V P O S I 8 0 0 0

C W I N D E X D E L A Y 0 0 E D

W B

D D P 3021

SP GAIN ADJUST

SP DELAY ADJUST

CEC THEATER LINK ON

ASPECTBLUEGRAY WHITE BLACK CROSS HATCHASPECT ASPECT ASPECT

ASPEC

T

ASPEC

T

Any buttonASPECT

To return:

Press any button except ASPECT.

Press ASPECT to switch each pattern.

Note: Wait about 3 seconds.

Then press ASPECT for next pattern.

For Focus adjustment

For DMD drive board

position adjustment

& verifying SP Gain

ASPECTASPECTASPECTASPECT

2006

DLP

ASPECT

Teal /

Cyan

Yell

solid

white

Blue

solid

Green

solid

Red

solid

Start:

Main Board Generated Patterns

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Slide # 32

O T H E R 1 / 1

O P T H P O S I 8 0 0 0

O P T V P O S I 8 0 0 0


W B

D D P 3021G C : 0 5 0 6 0 1 0 1

Aspect

Location: Work Service Mode / Factory Service Mode / Other / CW Index Delay

Aspect

Aspect

Blue

A

S

P

EC

T

A

S

P

E

C

T

Green White

If these patterns are:OK - Problem is the TV board block

NG - Problem is in the Digital Main board.

Red

Blk

white

blue

grn

RECALL

Red

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Slide # 33

CN2002

Video

inputsTV tuner

Block Light Engine

Troubleshooting:

The problem could be in the TV or Light Engine Blk.Strategy - A white pattern can be generated at the TV tuner block just before leaving along the 31 pin

cable and another white pattern can be generated in the light engine block. If the symptom is not present

in the generated pattern, the problem is before the point where the good pattern is generated.

31 pin cable

screen

Tuner / Menu

PS

14 pin power

CN1003

lens

menu

Video

DDP3021 Pattern Source

CW Index Pattern Source

Component &Composite

Generating the White patterns:

In the following steps you will enter the work service mode and select one of the white patterns.

1. Turn the TV on. 2. Work Mode Entry - Hold the TVs front panel Volume down button and the remotes

RECALL button for 5 seconds until Work Mode appears on the bottom of the TV screen.

3. Factory Service Mode Entry Press the remotes top VCR mode button and then the remotes RECALL

button to enter the Factory Service Mode. Press the top TV mode button and use the arrow down button to

highlight Other on the screen.

4. Press the OK button to enter/select Other. 5. Again use the arrow down button to highlight either the DDPor CW pattern. 6. Press ASPECT to enter. 7. Press RECALL to return for the other pattern.

Conclusion -

1. If the CW white pattern generated is clean without distortion, the problem is in the TV tuner block.

2. If the problem still appears on the DDP white screen, the problem is in the light engine.

3. If the CW white pattern has another problem (different than the original symptom), replace the TV tuner block.

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Slide # 34

Slide Slide

Repair Policy 3

Disassembly 4

Connector Layouts 7


o Dead Set 10













No Audio 26






o Access 37

o Navigation 38

o White Balance 39


Engine Replacement.

Service Operations

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Slide # 35

Remote P/N =

EUR7737z10

TV

Pwr Sap

recall

OK

vcr

Service Operations

Operation Service Mode Steps Comments Exit

Reset to out of box

condition

None Hold Vol (TV)

Hold OK (remote)

Turns off aft displaying

Shipment Setup

Automatic TV turn

off.

Lamp Time Reset None Hold Vol (TV)

Hold 0 (remote)

Lamp time resets to 0

hours.

Iris Mech test

16 step Brightness

change

Work S/M

(see S/M access

next)

Enter Work S/M

Press DVD,

RECALL (remote)

RECALL button drops iris

brightness (16 steps).

Press TV, press

any (remote)

button.

Lamp On time (since

reset)

Lamp Time S/M

page 1/4

See service mode

access & exit chart

Lamp Time = hrs

L On is # lamp-on times.IR (remote) button

check

Lamp Time S/M

page 2/4

See service mode

access & exit chart

When a remote button is

recognized, 1 changes to 0

Last 3 Error Codes

(last code is first)

Lamp Time S/M

page 4/4

See service mode

access & exit chart

Error codes appear after

SAFE _ _ _ _ _ _

White Screen made

by the main board

Factory S/M See service mode

access & exit chart

See Video troubleshooting

for details

White Screen made

by the light engine


access & exit chart

See Video troubleshooting

for details

Focus Pattern for

centering & focus


access & exit chart

See Focus adjustments

after light eng replacement.

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Service Mode Navigation

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Slide # 37

Service Mode Navigation(How to get around in the Service Mode)

Operation Press Button

(remote or front panel buttons)

Start: Begin Navigation Press the remotes (top) TV mode button

Back to previous Recall

Enter OK (remote or front panel) or ASPECT (remote)

Move up or down Channel up or down

Data change Volume up or down

Exit Shut off the TV. Let the power LED stop

blinking before turning it back on.If the TV sti ll doesnt exit, repeat but unplug

for a minute after the blinking stops.

DLP Remote p/n =

EUR7737z10

TV

Pwr Sap

recall

OK

vcr

aspect

DLPPT-xxDLX76

White Balance Adjustment

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Slide # 38

Factory Adjustment Mode

00 01 05

-Input 100% white from generator to confirm WB.

-If adjustment is required, enter the Factory Service Mode.

Select one of 5 WB levels from reddish to bluish by

changing the WB data numbers with the Volume

buttons.

O T H E R 1 / 1

O P T H P O S I 8 0 0 0

O P T V P O S I 8 0 0 0


W B 0 0

D D P

SP GAIN ADJUST

SP DELAY ADJUST

CEC THEATER LINK ON

Original data Bluish (After adjustment)Reddish

(default : 00)DLP

PT-xxDLX76

PT-xxDLX76 /16 Digital Station SNR

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Slide # 39

Press EXIT to return, OK for more information

Frequency: 78.00 MHzLock Status: LockedRate: 1.544Mbps

Mode: 256 QAMFrequency: 657.00 MHzLock Status: LockedSNR: 35 dB @-6 dBmV

Polarity: Non - Inverted

SNR: 18 dBPackets 3331Map: AvailableVCM: OK MMS: OKDCM: OK CDS: OKt:392 d:40 m: 38 f:0

FAT Status

FDC Status

Elapsed time: 4 days, 3 hr 6 minROM: 8192 KB RAM: 32768 KB

Video / Channel Status

PCR Status: LockedType: Digital

PCR pid: 0x0021Video pid: 0x0021Audio pid: 0x0022

POD Status: Present x: 0

Authorization status: 0x01Parental Block: No

Software version: 1.4.0 Oct 09 2003

POD MAC: N/A POD Net: N/A

CC708 Activated

System

Reset TV - 1. Turn the TV on. 2. Hold the Volume Dwn on the panel and 3. Hold the OKbutton on the remote for 8 seconds. The TV will display Shipment Setup, reset then shut

off. At power on you will have to reload the active TV channels.

Reset lamp time - 1. With the TV OFF, hold the TVs Volume down button and the

remotes 0 button for 5 seconds. 2. The lamp time will be reset to 0 hours.

SNR of Digital TV stations - Hold the Volume UP button on the TV and Hold theVolume UP button on the remote for 10 seconds. At the left corner of the diagnostic OSD isthe SNR level of the digital station in dB. This screen only appears on digital air or cable

stations, not analog stations.

Diagnostic

screen

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Slide # 40

Slide Slide

Repair Policy 3

Disassembly 4

Connector Layouts 7


o Dead Set 10













No Audio 26






o Access 37

o Navigation 38

o White Balance 39


Engine Replacement.

After Light Engine Replacement 1/5

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Slide # 41

When the Light Engine is replaced:

1. Center the picture electrically and mechanically (optional).

2. Adjust mechanical focus3. Adjust the color wheel colors in the Factory Service Mode

4. Adjust the 1080p SP Gain in the Factory Service Mode.

5. Optional transfer of White Balance & CW information from the new engine to the Main board EEprom.

1. Center the Picture (electrical)a) Follow these steps to enter the Work Mode, then jump to the Factory Service Mode to display

the Focus Pattern used to check picture center:

1) Work Mode - Hold the TVs VOL DWN and the remotes RECALL button for 5 seconds.

2) Factory Service Mode - Press the remotes top VCR mode button, then press RECALL..

3) Select OTHER using the remotes Channel and OK buttons. (Press RECALL to return)

4) Opt Hposi is already selected. Press the TV/Video button for any input except TV or

PC (like component video 1). Press VOL to display the Focus Pattern.5) Press the Volume buttons again to change the data and center the screen. Adjust so the

bars on the sides are equal in number.

FACTORY ADJUST 1 / 1

M : 2 . 0 2 0

VIDEO ADJ

SOUND

FAN

OTHER

PARTIAL

DT BOARD

EEP COPY L DG

DEFAULT SET

Factory Adjust Mode Focus Pattern

TV

Pwr Sap

recall

OK

vcr

aspect

DLP Remote p/n =

EUR7737z10Work Mode

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Slide # 42

Tilt Adjustment

b) From the front of the TV remove the optical cover (next to the lamp door / cover).c) Loosen the 4 screws at the sides of the projection lens (center).

d) Twist the center projection lens until the focus pattern is straight along the bottom

(parallel to the bezel) and not tilted.

1. Center the Picture (mechanical) optional

Projection lens Icons data #bezel

Focus

pattern

Centering

2. Adjust Mechanical Focus - mandatory

a) At the right of the projection lens in the optical assembly, loosen the focus knob (CCW).b) Watch the center of the internal focus pattern or a single scan line while moving the knob

up or down for best focus.

c) Tighten the screw (CW).

Focus knob

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Slide # 43

3. Adjust the Color Wheel Colors (to maintain solid colors) - optionala) While still displaying the internal focus pattern, press RECALL to return to the Factory

Service Mode / Other Menub) Press CHANNEL down to select CW INDEX DELAY and pressASPECT to enter.

c) Use the VOLUME buttons to change the data so only solid red and black are shown.

d) Check in the other colors. Press RECALL.

O T H E R 1 / 1

O P T H P O S I 8 0 0 0

O P T V P O S I 8 0 0 0


W B

D D P

G C : 0 5 0 6 0 1 0 1

Recall

OK

NGAspect

Aspect

Blue

ASP

ASP

EC

T

Red

Green

White

Aspect

Blue

Black

Blue

EC

T

Red

Blk

DLPPT-xxDLX76


4 Ch k / Adj h 1080 SP G i Adj

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Slide # 44

4. Check / Adjust the 1080p SP Gain Adjustment (to avoid jagged horiz. lines) - mandatorya) If still displaying the CW Index pattern, press RECALL to return to the Factory Service Mode / Other Menu

b) Press CHANNEL down to highlight SP GAIN ADJUST and pressASPECT to select. Wait 3 seconds forthe SP Gain Adj screen.

c) Use the VOLUME +/- buttons to change the data to make the lines straight as possible as shown.

d) Press ASPECT* again to return to the OTHER page. Go to step 5 to copy white balance info. or exit in 4e.

e) Press RECALL 2 times to SAVE by exiting from the Factory Service Mode into the Work Mode. Turn the

TV off to completely exit the service modes.

OK

NG

OK

These two lines

should be in line.

These two lines

should be in line.

O T H E R 1 / 1

O P T H P O S I 8 0 0 0

O P T V P O S I 8 0 0 0


W B

D D P

SP GAIN ADJUST

SP DELAY ADJUST

CEC THEATER LINK ON

Aspect

3 sec delay

Aspect

Factory Adjust Mode,

Other page

SP Gain Adjust Screen

* Picture Inversion Note:

Symptom: The picture will invert and some buttons will not work if the RECALL button

is incorrectly used to return to the previous page or EXIT (step 4d).

Remedy: To correct, press the Power OFF button and the Power ON button (same

button) to restore normal operation.

DLPPT-xxDLX76

After Light Engine Replacement 4a/54 Ch k / Adj h 1080 SP G i Adj C t

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Slide # 45

4. Check / Adjust the 1080p SP Gain Adjustment Concept (to avoid jagged horiz. lines)

O T H E R 1 / 1

O P T H P O S I 8 0 0 0

O P T V P O S I 8 0 0 0


W BD D P

SP GAIN ADJUST

SP DELAY ADJUST

CEC THEATER LINK ON

OK

NG

OK

These two lines

should be in line.

These two lines

should be in line.

Aspect

SP Gain Adjust ScreenFactory Adjust Mode,

Other page

3 sec delay

Aspect

DLPPT-xxDLX76

DMD mirror position

(exaggerated) 1080p Concept:

Doubling the number of lines

from 1080i to 1080p is

accomplished by oscillatingthe mirror panel at 60Hz. This

adjustment is for mechanical

electrical sync.

Rear TV

mirrorvideo lamp

60 Hz. osc

After Light Engine Replacement 5/55 Whit B l t f (li ht i t th i b d) ti l

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Slide # 46

5. White Balance transfer (light engine to the main board) - optionala) If still displaying the SP Gain Adjust Screen, press ASPECT to return to the Factory Service Mode / Other

Menub) Press the RECALL button to return to the main Factory Adjust Service Mode Screen.

c) Press CHANNEL down to highlight EEP COPY.

d) Hold down the OK button until the word OK appears on the screen (approx. 5 seconds). This completes

the transfer of the CW and White Balance information from the new light engine to the main board.

e) Press RECALL 2X to Save the information by returning to the Work Mode. Turn off the TV and Unplug theTV to complete the operation. At power on, the TV will retrieve this new information from the main board

EEProm and insert it into the main board microprocessor operating memory.

Picture Inversion Note:

Symptom: The picture will invert and some buttons will not work if the RECALL

button is incorrectly used to return to the previous page or EXIT (step 4d).

Remedy: To correct, press the Power OFF button and the Power ON button

(same button) to restore normal operation.

O T H E R 1 / 1

O P T H P O S I 8 0 0 0

O P T V P O S I 8 0 0 0


W B

D D P

SP GAIN ADJUST

SP DELAY ADJUST

CEC THEATER LINK ON

Recall OK

OTHER Sub Menu

DLPPT-xxDLX76

Table of Contents - PT-xxDLX76 RepairSlid Slid

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Slide # 47

Slide Slide

Repair Policy 3

Disassembly 4

Connector Layouts 7


o Dead Set 10o Power LED blinks continuously 11








o Power LED 8X Code (No Lgt Eng Cont.) 20o Temp LED continuous (Excess Temp) 22



No Audio 26






o Access 37

o Navigation 38

o White Balance 39


Engine Replacement.

Class End

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Slide # 48

Panasonic Thanks You forsharing your time with us.

Herb Chin

Documents

DLP_DLX76.pdf