Panasonic TH-37PX60U Kurzanleitung

Technical Guide

9th Generation Plasma Display

Troubleshooting Handbook

TH-37/42/50/58PX60 TH-42/50/58/65PX600

TH--42PD60U42

Panasonic Service and Technology Company

National Training

Table of Contents

Subject Page

Troubleshooting Shutdown Problems 5

Power LED’s Response to Shutdown Operation 6

LED blinks 1 time 7

LED blinks 2 times (TH-37PX60, TH-42PD60U, TH-42PX60U \ 600U) 8

LED blinks 2 times (TH-50PX60U\600U, TH-58PX60U\600U, TH-

65PX600U) 9

LED blinks 3 times 10

LED blinks 4 times 11

LED blinks 5 times (Quick Troubleshooting) 12

LED blinks 5 times (TH-37PX60U, TH-42PX60U and TH 42PX600U) 13

LED blinks 5 times (TH-50PX60U and TH 50PX600U) 14

LED blinks 5 times (TH-58PX60U and TH 58PX600U) 16

LED blinks 5 times (TH-65PX600U) 18

LED blinks 6 times 20

LED blinks 7 times (All Models Except TH-58PX60/600U) 21

LED blinks 7 times (TH-58PX60/600U) 22

LED blinks 8 times 23

LED blinks 9 times 24

LED blinks 10 times before pressing the power button 25

LED blinks 10 times after pressing the power button 26

LED blinks 11 times 26

LED blinks 12 times (TH42PD60U, TH-37/42/50PX60U) (TH-

65PX600U) 28

Subject Page

LED blinks 12 times (TH42/50/58PX600U) 29

Dead 30

No Picture from one or all inputs (OSD and Sound OK) 31

No Picture\No OSD 32

No Sound (TH-42PX600U) 33

Troubleshooting for Picture Problems 36

Diagnostic Method for Troubleshooting PDP Television 36

Diagnosis by Test Pattern When OSD is Available 37

Diagnosis by Removing the D5 Connector 38

Troubleshooting for Picture Trouble 39

Diagnosis for Picture Problem (All Over the Screen) 40

Diagnosis of Vertical Line Problem 44

Picture Trouble at Upper or Lower half 45

Picture Trouble at Right or Left half (50 Inch) 46

Picture Trouble at Right or Left half (42/37 Inch) 47

Picture Trouble in 50 Inch Models 48

Picture Trouble all Over the Screen 49

Examples of Symptoms and Remedies 50

Reset and Self-check Procedure 57

Driver Setup Adjustment 58

Board Layout and Part Numbers 63

Introduction

1. Basic concept of how to determine the defective board

1) Verification of voltages

Normally, when there is a power problem, shutdown occurs immediately.

So, to resolve a power problem, voltage checks are necessary before shutdown.

2) Check if the power comes up after disconnecting the board under suspicion.

If power comes up (*) after disconnecting a board, the board is defective.

(*) “Power comes up” equals “no shutdown”.

2. Troubleshooting Video and Audio problems

3. Examples of video problems

4. Adjustment after PCB exchange

1) After exchanging the following boards, voltage adjustment is required.

P board, SC board, SS board => Please refer to the “Service Manual”.

1. Troubleshooting Shutdown Problems

Power LED’s Response to Shutdown Operation

Once

3.0sec (interval) Light

No Light

LED

Blinking

times Contents Check Point

15V line abnormality

3.3V line abnormality

Power Supply abnormality

5V line abnormality

Scan Driver (1) abnormality

Sustain Driver abnormality

Communication error

Panel Status abnormality

Scan Driver (2) abnormality

FAN abnormality

Voltage for sound abnormality

REG. voltage abnormality

D Board (15V SOS)

D Board (3.3V SOS)

P Board (Power SOS)

D Board (5V SOS)

SC,SU,SD Board (SC Energy recovery circuit)

SS Board (SS Energy recovery circuit)

D Board

D,DG Board (Panel Status DET)

SC,SU,SD Board (SC Floating voltage area)

FAN

PA Board (Sound SOS)

PA, Board (PA SOS, Tuner SOS)

20 Communication error DT,DG Board

LED blinks 1 time

Trouble Mode

Communication Error

Defective Board

D Board

In this case, the defective board is D board only.

Warning: Disconnect AC Power prior to

making any disconnection or

connection.

LED blinks 2 times (TH-37PX60, TH-42PD60U, TH-42PX60U\600U)

Trouble Mode

15V down SOS

Defective Board (Possibility)

P, D, PA, SC, SS Board (P > PA, D, SC, SS)

Turn the unit on.

Is there 15V output

at CN P25 pin 1 or 2 before

Shutdown ?

DBoard SC Board

DBoard

Yes

PBoard

PA Board

Power SW OFF.

Disconnect CN P25. Is pin 1

or 2 of the socket P25 shorted

to GND?

Yes

Turn the unit on.

Does the power LED

blink 2 times?

With the power SW OFF, disconnect

CN SC23, SC20, and SC2. To isolate

the SC board.

With the power SW OFF, disconnect CN P12, SS11, and SS23 (*1)to

isolate the SS board. Remove the jumper at CN SS34 and install it

across pin 8 and 10 of connector P12.

SS Board

Turn the unit on.

Does the power LED

blink 2 times?

Yes

With the power SW OFF, disconnect

CN P5. To isolate the PA board

board.

Turn the unit on.

Does the power

LED blink 2 times? The

power LED may blink 12

times.

Warning: Disconnect AC Power prior to

making any disconnection or

connection.

(*1) = Th reference number of

the sustain data connector is

different in some of the models:

TH-42PX600U = SS23

LED blinks 2 times (TH-50PX60U\600U, TH-58PX60U\600U, TH-65PX600U)

Trouble Mode

15V down SOS

Defective Board (Possibility)

P, D, PA, SC, SS Board (P > PA, D, SC, SS)

Turn the unit on.

Is there 15V output

at CN P25 pin 1 or 2 before

Shutdown ?

DBoard SC Board

DBoard

Yes

PBoard

PA Board

Power SW OFF.

Disconnect CN P25. Check

pin 1 or 2 of the socket for a

Short to GND?

Yes

Turn the unit on.

Does the power LED

blink 2 times?

With the power SW OFF, disconnect

CN SC23, SC20, and SC2. To isolate

the SC board.

With the power SW OFF, disconnect CN P12, SS11, and SS43

(*1). to isolate the SS board. Remove the jumper at CN SS34

and install it across pin 8 and 10 of connector P12.

SS Board

Turn the unit on.

Does the power LED

blink 2 times?

Yes

With the power SW OFF, disconnect

CN P5. To isolate the PA board

board.

Turn the unit on.

Does the power

LED blink 2 times? The

power LED may blink 12

times.

Warning: Disconnect AC Power prior to

making any disconnection or

connection.

(*1) = The reference number of the sustain data

connector is different in some of the models:

TH-50PX60U = SS43

TH-50PX600U = SS43

TH-58PX60U = SS44

TH-58PX600U = SS44

TH-65PX600U = SS44

LED blinks 3 times

Trouble Mode

3.3V down SOS

Defective Board

D Board

In this case, the defective board is D board only.

Warning: Disconnect AC Power prior to

making any disconnection or

connection.

LED blinks 4 times

Trouble Mode

Power Supply SOS

Defective Board

Primarily P board or possible D board

DBoard

Turn the unit on.

Is pin 16 of CN P25 of

the P board high

before shutdown?

P Board

Yes

Warning: Disconnect AC Power prior to

making any disconnection or

connection.

LED blinks 5 times (Quick Troubleshooting)

Trouble Mode

5V SOS

Defective Board

D, P, C, SC, SS board or Panel (DDIC)*1

Is the resistance of pin 1 of

the lead cable P12 zero

ohm?

Disconnect CN P12

of the power supply board. Measure the

resistance of pin 1 of the lead cable to ground.

Yes

Warning: Disconnect AC Power prior to

making any disconnection or

connection.

(*1) = Data Driver IC

Proceed to more extensive troubleshooting of

the pages that follow.

Panel

LED blinks 5 times (TH-37PX60U, TH-42PX60U and TH 42PX600U)

Trouble Mode

5V SOS

Defective Board

D, P, C, SC, SS board or Panel (DDIC)*1

No No

Disconnect

CN D31, D32

Is pin 7 of CN P25 shorted

to GND?

Connect D31.

Disconnect D32.

Is pin 7 of CN P25 shorted

to GND??

Yes

DBoard Disconnect CB1-CB4.

Is pin 7 of CN P25 shorted

to GND?

Yes

C1 Board Panel

Disconnect D31.

Connect D32.

Is pin 7 CN P25 shorted

to GND?

Yes

Disconnect CB5-CB8.

Is pin 7 of CN P25 shorted

to GND?

Yes

C2 Board Panel

Connect CN SC20.

Disconnect CN SS23

Turn on the unit. Does it

power up?

SS Board

Yes

Connect CN P25.

Disconnect CN SC20

Turn on the unit. Does it

power up?

SC Board

Yes

Disconnect CN P25.

Is pin 7 of the socket P25

shorted to GND?

PBoard

Yes

Go Back

to the start.

Warning: Disconnect AC Power prior to

making any disconnection or

connection.

LED blinks 5 times (TH-50PX60U and TH 50PX600U)

Trouble Mode

5V SOS

Defective Board

D, P, C, SC, SS board or Panel (DDIC)*1

No No

Yes

Disconnect

CN D31, D32, D33, and D34.

Is pin 7 of CN P25 shorted

to GND?

DBoard

Connect

CN SC20. Disconnect CN SS43 (*1)

Turn on the unit. Does it

power up?

SS Board

Yes

Connect

CN P25. Disconnect CN

SC20 Turn on the unit. Does

it power up?

SC Board

Yes

Disconnect CN P25.

Is pin 7 of the socket P25

shorted to GND?

PBoard

Yes

Warning: Disconnect AC Power prior to

making any disconnection or

connection.

Connect D31. Disconnect

CN D32, D33, and D34. Is pin 7 of CN

P25 shorted to GND?

Panel

Connect

CN C10 of the C1

board. Disconnect CA1-CA3.

Is pin 7 of CN P25 shorted

to GND?

Yes

C1 Board

Disconnect

CN C10 of the C1 board. Is pin 7 of CN P25

shorted to GND?

Yes

Panel

Connect CN C10. Disconnect

CA4-CA7. Is pin 7 of CN P25 shorted

to GND? Yes

C2 Board

See step 1 of next

page.

(*1) = The reference number of

the sustain data connector is

different in some of the models:

TH-50PX60U = SS43

TH-50PX600U = SS43

LED blinks 5 times (TH-50PX60U and TH 50PX600U)

Trouble Mode

5V SOS

Defective Board

D, P, C, SC, SS board or Panel (DDIC)*1

Warning: Disconnect AC Power prior to

making any disconnection or

connection.

Connect D32.

Disconnect CN D31, D33,

and D34. Is pin 7 of CN

P25 shorted

to GND?

Disconnect

CA8-CA11. Is pin 7 of

CN P25 shorted to

GND?

Yes

C3 Board

Panel

Connect D33.

Disconnect CN D31, D32,

and D34. Is pin 7 of CN

P25 shorted

to GND?

Disconnect

CB8-CB11. Is pin 7 of

CN P25 shorted to

GND?

Yes

C4 Board

Panel

Connect D34.

Disconnect CN D31, D32,

and D33. Is pin 7 of CN

P25 shorted

to GND?

Panel

Yes

C6 Board

Yes

No Connect

CN C60 of the C6

board. Disconnect CB1-

CB3. Is pin 7 of CN P25

shorted

to GND?

Disconnect CN C60 of

the C6 board. Is pin 7 of CN

P25 shorted to GND?

Panel

Disconnect

CB4-CB7. Is pin 7 of CN P25

shorted to GND?

Yes

C5 Board

Go back

to the start of

the flowchart.

Step 1

of previous page

LED blinks 5 times (TH-58PX60U and TH 58PX600U)

Trouble Mode

5V SOS

Defective Board

D, P, C, SC, SS board or Panel (DDIC)*1

No No

Yes

Disconnect

CN D31, D32, D33, and D34.

Is pin 7 of CN P25 shorted

to GND?

DBoard

Connect

CN SC20. Disconnect CN SS44

Turn on the unit. Does it

power up?

SS Board

Yes

Connect

CN P25. Disconnect CN

SC20 Turn on the unit. Does

it power up?

SC Board

Yes

Disconnect CN P25.

Is pin 7 of the socket P25

shorted to GND?

PBoard

Yes

Warning: Disconnect AC Power prior to

making any disconnection or

connection.

Connect D31. Disconnect

CN D32, D33, and D34. Is pin 7 of CN

P25 shorted to GND?

Panel

Connect

CN C10 of the C1

board. Disconnect CA1-CA4.

Is pin 7 of CN P25 shorted

to GND?

Yes

C1 Board

Disconnect CN C10

of the C1 board. Is pin 7 of CN P25 shorted

to GND?

Yes

Panel

Connect

CN C10. Disconnect CN CA5-CA8

and C23 of the C2 board. Is pin 7 of CN

P25 shorted to GND?

Yes

C2 Board

See step 1 of next

page.

LED blinks 5 times (TH-58PX60U and TH 58PX600U)

Trouble Mode

5V SOS

Defective Board

D, P, C, SC, SS board or Panel (DDIC)*1

Warning: Disconnect AC Power prior to

making any disconnection or

connection.

Connect D32.

Disconnect CN D31,

D33, D34 and C10 of the C1

board. Is pin 7 of CN

P25 shorted

to GND?

Disconnect

CA9-CA11. Is pin 7 of

CN P25 shorted to

GND?

Yes

C3 Board

Panel

Step 1 from previous page

Panel

Connect

CN C60 of the

C6 board. Disconnect

CB1-CB4. Is pin 7 of CN

P25 shorted

to GND?

Yes

C6 Board

Panel

Connect D34.

Disconnect CN D31,

D32, and D33. Is pin 7

of CN P25 shorted

to GND?

Disconnect

CN C60 of the C6 board.

Is pin 7 of CN P25

shorted to

GND?

Yes

Connect

CN C60.

Disconnect CN

CB5-CB8 and C43 of the

C4 board. Is pin 7 of CN

P25 shorted

to GND?

Yes

C5 Board

Connect D33.

Disconnect CN D31,

D32, D34 and C60 of the C1

board. Is pin 7 of CN

P25 shorted

to GND?

Disconnect

CB9-CB11. Is pin 7 of

CN P25 shorted to

GND?

Yes

C4 Board

Go back

to the

start of

the

flowchart.

Panel

LED blinks 5 times (TH-65PX600U)

Trouble Mode

5V SOS

Defective Board

D, P, C, SC, SS board or Panel (DDIC)*1

No No

Yes

Disconnect

CN D31, D32, D33,

D34,D35 and D36.

Is pin 7 of CN P25

Shorted to

GND?

DBoard

Connect

CN SC20. Disconnect CN SS44

Turn on the unit. Does it

power up?

SS Board

Yes

Connect

CN P25. Disconnect CN

SC20 Turn on the unit. Does

it power up?

SC Board

Yes

Disconnect CN P25.

Is pin 7 of the socket P25

shorted to GND?

PBoard

Yes

Warning: Disconnect AC Power prior to

making any disconnection or

connection.

Connect

CN D32. Disconnect

D31, D33, D34, D35, and D36. Is

pin 7 of CN P25 shorted

to GND?

Disconnect

CN C31of the C3 board. Is pin

7 of CN P25 shorted

to GND?

Yes

Panel

Connect CN C31.

Disconnect CN CA6-CA10

of the C2 board. Is pin 7

of CN P25 shorted

to GND? Yes

C2 Board

See step 1 of

next page.

Connect

CN D31.Disconnect

CN D32, D33, D34, D35

and D36. Is pin 7 of CN

P25 shorted

to GND??

Yes

Disconnect

CA1-CA5. Is pin 7 of

CN P25 shorted

to GND?

Yes

C1 Board Panel

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