2007 Viera Plasma TV PCB Component Level Repair Hands-On Seminar Presented by: Rodolfo Abuyuan Panasonic Canada Inc. May/June 2008

2007 Viera Plasma2007 Viera Plasma TVTV PCB Component Level Repair PCB Component Level Repair

Hands-On SeminarHands-On Seminar

Presented by: Rodolfo Abuyuan

Panasonic Canada Inc.

May/June 2008

This hands-on seminar have been developed especially for field technicians involved in the repair of Viera Plasma TVs.

Its purpose is to impart repair know-how and troubleshooting skills mostly gained during actual repair of Viera PC boards.

Promote component level repair of Viera PC boards in the field.

Purpose for this hands-on seminar

Review: 2007 Model line up & Signal flow Block Diagram

2006 2007

2007 PDP Line-up

SD Leader Model

HD High End Model

Derivative Model

1080p HD High End Model TH-58PZ700UTH-58PZ700U

TH-65PZ750UTH-65PZ750U

TH-42PX75UTH-42PX75U








TH-42PE7UTH-42PE7U

TH-50PX600TH-50PX600


TH-42PD60TH-42PD60

TH-50PX60TH-50PX60

TH-42PX60TH-42PX60

TH-37PX60TH-37PX60


HD Step Up Model

TH-50PZ750UTH-50PZ750U TH-42PZ77UTH-42PZ77U

SU

SD

C3*

SCScan Drive

P PowerSupply

SK

SS2

SSSustainDrive

SS3

G

DTV InterfaceDigital Signal ProcessorDC-DC Converter

A

D

Different Points form Current models(50V)Different Points form Current models(50V)

50PX600/60

C2

SU

SD

C1 C3

C6 C4C5

SCScan Drive

P PowerSupply

G GK SK

SS2

SSSustainDrive

SS3HAV TerminalHC

PADC-DC-

Converter

GS

Different points from current 1.Introduction of single scan system except PZ series.2.The function of DG,H,PA and DT board are combined to A board

3.There is not G board on PX75

DTD-TV Interface

Plasma AI Processor

FormatConverter

DDigital Signal Processor

DG

Format ConverterPlasma AI processor

50PZ750/700 PX77/75

C3

Only PZ series

Except PX75(*)PZ series as follows C1→ C6 　 C2→ C5 C3→ C4

C2C1

C1* C2*

GS

Signal Circuit SummarySignal Circuit Summary::

Input Source

Signal Processor

PanelDrive

Speaker

TV tunerAV terminalSD card PC input

PictureVideoVideoSignalSignal

VideoVideodatadata

AudioAudioSignalSignal

Sound

BrightnessContrastSharpnessetc

BassTrebleBalanceVolume

AudioAudioSignalSignal

Video

Audio

Signal Circuit Overview:Signal Circuit Overview:

Input Source Signal Processor Panel Drive

K : Remote Receiver / Power LEDS : Power switch

GS : SD Card Slot Key SwitchA : DC-DC converter Speaker Out, Sound Processor AV terminal, AV switch Digital Signal processor Micon HDMI Interface

D : Format Converter / Plasma AI Processor / Sub-Field Processor

GS

D

SPEAKER　（ L/R ）

HDMI 　　　

K

A

<Back view>

SS2

SC

SU

SD

C1 C3

SS3

SS

C2

Panel

SC: Scan Drive

SU: Scan Out (Upper)

SD: Scan Out (Lower)

SS: Sustain Drive

SS2: Sustain Connector (Upper)

SS3: Sustain Connector (Lower)

C1: Data Drive

C2: Data Drive

C3: Data Drive

AUDIO VIDEOComp

S

In case of 50PX75

TV Tuner

PZ750/700 only

PC

R,G,B :10Bit

IC2601

10bit A/DHDMI

receiver

HDMI2(*1) LVDS : Low Voltage Differential Signaling

Y,C / V

Y,C / V

Y,Pb, Pr

AV1

AV2

Main MICON

IC1100

Video signal processing:Video signal processing:

Y,Pb,PrComp.2

HDMI1

Comp.1

Tuner

AnalogDigital

Y/CMonitor Out

VIDEOSWITCH

IC3001

Y,Pb,Pr

IC4510

PZ750/700 only

PC Input

In case of 50/42PX75

DigitalVideoInput

DigitalVideo

Processor

LVDS(*1)Transmitte

r

To D board

A

IC8001

Peaks

Lite 2

<A Board> IC3001 : VIDEO SWITCH IC4510 : A/D CONVERTER (10Bit) IC8001 : LVDS TRANSMITTER IC1101 : MAIN MICRO PROCESSOR

Front EndPro

GS SD

D

From ・ A board(USA/CANADA)・ DG Board

IC9500

PICTUREOUTPUT

DISCHARGE CONTROL

IC9900

I/P,FORMAT CONVERTER

CLOCK

PLASMA AI,S.F. PROCESSOR

DATA DRIVER

SUSTAIN CONTROL

SCAN CONTROL

LVDSRECEIVER

CONTROL DATA 10bit

IC9802IC9803

<D Board> IC9500 : LVDS RECEIVER / DISCHARGE CONTROL IC9900 : PLASMA AI / SUB-FIELD PROCESSOR IC9901 : DDR SDRAM

To C1 Board

To C1 Board

To SS Board

To SC Board

IC9200 : CLOCK GENE.IC9802-3 : LEVEL CONVERTER (3.3V => 5V)IC9303 : FLASH MEMORYIC9003 : MICRO PROCESSOR

IC9303IC9200 IC9901

D-Board: D-Board:

LVDS Signal

SDRAM

To C2 Board

To C2 Board

Video Data

FLASH

Video Data

MICRO PROCESSOR

IC9003

C3 of 50V is suppliedVideo Data through C2.

C3 of 50V is suppliedVideo Data through C2.

In case of 50/42PX75

IC6901IC6902IC6903IC6904IC6905IC6906

D

<SU Board>IC6901-IC6906 : SHIFT RESISTOR (UPPER)

C １ C3

SD

IC6951IC6952IC6953IC6954IC6955IC6956

96 Line

96 Line

96 Line

96 Line

96 Line

96 Line

96 Line

96 Line

SCAN ELECTRODE

768Line

128 Line

128 Line

128 Line

128 Line

128 Line

128 Line

SUSTAIN ELECTRODE

768Line

DATA ELECTRODE1366Line(R,G,B)

Panel Drive 50V:Panel Drive 50V:

IC9500

SC

SCANDriveSignal

ICsDischargeControl

VoltageReg.

DATAProcessor

SS

SS2

SS3

ICs

VoltageReg.

SUSDriveSignal

SUSCONTROLPULSE

IC9300

Drive IC(2) inside

CB1 CB2 CB3 CB4 CB5 CB6 CB7 CB8 CB10CB11

<SD Board>IC6951-IC6956 : SHIFT RESISTOR (LOWER)

VIDEODATA

VIDEODATA

SCANCONTROLPULSE

SUSCONTROLPULSE

D20

VIDEO DATA & DATA TIMING PULSE

C2

D31

D32 <Back side view>SC

20

In case of 50PX

SU

C11 C21

SS33

C33

C32

C22

CB9 CB12

PC Board Recycling Component Level Repair

Adjustments Procedure:

I. Item preparation:

1. Input a white signal.2. Set picture controls as follows:

Picture menu: DynamicP-NR: OFFAspect: 16:9

CAUTION:1. Perform Vsus adjustment first.2. Confirmation of Vscn voltage should be done after confirmation of

Vad adjustment.When Vad = -105V, Vscn voltage is 35V +/- 4V.

These adjustment procedure is mandatory after replacing SC, SS & P boards. It is also required if Panel was replaced.

II. Driver Adjustment TH42PX75:

Adjustment voltage

III. Initialization Pulse Adjustment:

1. Input White signal into the unit.2. Set picture controls as follows:

Picture Menu: DynamicP-NR: OFF

3. Connect oscilloscope probe to test point TPSC1 (T2).Adjust VR6602 to obtain 195 +/- 10 µsec for T2.

Some of the symptoms you may obtain if the adjustment is not performed:

• Several images maybe displayed at the same time.• Excessive brightness.• Low brightness.• Wrong hue/color.• Reduction of the life of the panel.

Adjustment necessary when PC board exchanged:

Adjust the following voltages using multimeter:

Caution: Do not adjust Vsus below Ve to avoid damage to PCB.

*Please refer to Panel label for set value.

No Power Troubleshooting

Flowchart

SOS: Blinking Codes

SOS Overview:SOS Overview:

Picture TroublePicture Trouble

• Abnormal picture 　　　　 1. Local area 　　　　　　　 2. All area• No picture

Abnormal Picture ( Sound OK )Abnormal Picture ( Sound OK )

Upper halfor

Lower half

Left / Right halfor

Corner

Where abnormal picture

is displayed ?

Other casee.g. All over the

screen

A) Local Area

Upper half

Lower half

Both Lower half and Upper half

SU Board ( or D or SC )

SD Board ( or D or SC )

SS Board ( or D )

Left / Right half C Board ( or D or Panel )

Yes

Test Pattern Isnormally

displayed ?

NoDG Board or A board or

Panel (*1)

A Board ( or D )

B) ALL Area

Note : *1 Panel gas leakage Because of crack or some reason, gas leakage will start. In this picture, gas leakage started at the left top of corner. Finally, gas leakage will lead to “No picture “symptom with buzz noise.

Trouble at Upper or Lower half 50 inchTrouble at Upper or Lower half 50 inch

1 Upper

SU-board defect(SC or D)

2 Lower

SD-board defect(SC or D)

Symptom : No Picture, Picture noise, Full Horizontal line

(Actual symptom : Horizontal line)

NG Area (Front view)

SC

SU

SD

SS

C3C3

SS2

SS3

C2

D1

2

CC C

Only PZ type

Trouble at Upper or Lower half 42 inchTrouble at Upper or Lower half 42 inch

1 Upper

SU-board defect(SC or D)

2 Lower

SD-board defect(SC or D)

SC

SU

SD

SS

C1C2

1

2D

Symptom : No Picture, Picture noise, Full Horizontal line

(Actual symptom : Horizontal line)


Trouble at Right or Left half 50 inchTrouble at Right or Left half 50 inch

Symptom : No Picture, Picture noise, Full wide vertical line

1 Right halfD-board defect(C1/ C3* )

2 Left halfD-board defect(C2/C3/C1*/C2* )


SC

SU

SD

SS

SS2

SS3

D12

C １C3 C2

Only PZ type

C3*C1* C2*

(*)PZ series as follows C1→ C4 　 C2→ C5 C3→ C6

Trouble at Right or Left half 42 inchTrouble at Right or Left half 42 inch

Symptom : No Picture, Picture noise, Full vertical line

1 Right halfD board defect (C1 or Panel)

2 Left halfD board defect(C2 or panel)

SC

SU

SD

SS

C1C2

12D


Trouble at some part of screen 50inch HDTrouble at some part of screen 50inch HD

1 Right

2 Middle

C1 board or Panel defect

3 Left




NG Area (Front view)NG Area (Front view)

SC

SU

SD

SS

SS2

SS3

D

C1C3 C2

123

Trouble at Corner area 50inch Full HDTrouble at Corner area 50inch Full HD

1

2


3




NG Area (Front view)NG Area (Front view)

SC

SU

SD

SS

SS2

SS3

D12

C1C3 C2

C6C4 C5 1

2

3

4564

5


6



Trouble at all areaTrouble at all area

Symptom : No Picture, Picture noise, Vertical line

1 All area

D-board defect orA/DG-board defect

AorDG

A Board (or D board)

D Board

Defective Board

Normal

Abnormal

Pattern

D board has Test Pattern. We can judge if DG or D board is failure by using Test Pattern.

How to judge defective board D or DG.(A :North America)

(HD model 50 inch)

SC

SU

SD

SS

SS2

SS3

D

CC C

Only PZ type

CC C 1

2

The idea of vertical line problemThe idea of vertical line problem

A number of blocksno lighting

Thin vertical line or 1 block no lighting

D board ( or C board) NG

D-board ( or C-board)

orD boardD Board

FPC

1 Line

FPC

Buffer

C Board

Buffer

C Board

Driver IC

1 Block 2 Blocks

PDP panel (Driver IC) NG( or D board or C board )

Driver IC Driver IC Driver IC

PDP PanelPDP Panel


e.g. HD model 50inch

C6

Buffer

C4

Buffer Buffer

C5

C1

Buffer

C3

Buffer Buffer

C2

Panel

ICIC IC IC

case1 case2

case1 case2

Drive IC(2) inside

(Actual symptom : Vertical line)

Test pattern for Abnormal PictureTest pattern for Abnormal Picture

1.While pressing "VOLUME-" button of the TV set, press "RECALL" button of the remote control three times within 3 seconds.

2. Push button "1" of Remote Controller several times, and select “Aging mode”.

3. Press “3" button for next picture in forward direction. Press “4” button for reverse direction.

2:White(by DG Board)

4:Red 5:Green 6:Blue 7:ON/OFF Aging

9:Ramp Red10:Ramp Green11:Ramp Blue12:1% window13:Color bar14:A and B zone15:Scrolll

8:Ramp white

Normal Test Pattern

1:R/G/B/W(by DG Board)

How to show Test Pattern

Abnormal Test Pattern

e.g.

16:White Frame

3:White(by D Board)

No Picture (Sound OK)No Picture (Sound OK)

No

Yes

No

Yes

A Board ( or D )

AnalogTV NG

Only DigitalTV NG

ALL Input SourcePicture NG ?

When Multi window mode,Right picture NG A Board

When removingD5 coupler,white pictureappears ? (*)

No

Yes

D Board

Panel dischargeoccurs ?

A Board

Only HDMI Input NG

(*) Please refer to the next sheet

No

Yes

SU Board

When removingSU Board,

lower half pictureappears ?

No

Yes

SD Board

When removingSD Board

upper half pictureappears ?

SC Board( or D )

Panel ＊＊ Slow leakage and

finally it cause no raster and

buzzing noise

A Board

A Board

Sound NGSound NG

No

Yes

No

Yes

A board

Only AnalogTV NG

Only DigitalTV NG

ALL Input SourceSound NG ? A Board

A BoardOnly HDMI Input NG

No

No sound of all speaker?

Speaker or A board

A Board

Removal D5 couplerRemoval D5 coupler

IC9500PICTUREOUTPUT

IC9900

S.F. PROCESSORDATA DRIVER

To C Board

LVDSRECEIVER

White PictureD

LVDS

A

MICROPROCESSOR

IC8001LVDS

TRANSMITTER

IC1100

Peaks Lite2

New PLASMA AI

VIDEO DATA

D5

A5

Removal/Disconnect

Note: In 2007 model, removal A5 is easier than removal D5Because D board location is behind the A board.

<Purpose> In case of No picture problem (Sound OK), the defective board is mainly A or D board. But in this case, test Pattern isn’t useful for diagnosis. Because, this symptom can not display OSD and not enter to the Service Mode. This method is possible to judge the defective board in this symptom.

D board (SC or SS)

A Board (D board)

Defective Board

No Picture

White Picture

Pattern

<Diagnosis>

A5 coupler

<Method>1. This white pattern is generated by IC9900 on D board.2. When Power ON after removing D5 connector, white picture is provided to panel drive circuit. Then, white picture automatically appears in normal situation.

Self Check Indication:

Self Check

DT OK

ADV OK

MEM1 IC1101

MEM2 IC8503

PANEL IC9003

TEMP IC9002

VSW OK

ASW OK

TUNE1 OK

TUN2 OK

FE OK

Genex4 OK

ADAV OK

ROMCORR.CHECKSUM;93

Copyright 2007 Matsushita Electric Industrial CO.,Ltd.

Press volume down button on the TV unit and OK buttonon the remote control at the same time for more than 3 seconds.

<How to enter>

DT IC8001

ADV IC4510

VSW IC3001

ASW IC3101

TUN1 TU8300

TUN2 TU8300

FE IC8302

Genex4 IC1100

ADAV IC2106

A-board

A-board

A-board

A-board

A-board

A-board

A-board

A-board

A-board

A-board

A-board

D-board

D-board

Peaks Lite 2

A/D Convert. HDMI RX

Video Switch

Sound Processor

Audio Switch

Tuner (PLL block)

Tuner (MTS block)

Digital demodulator

GenX4 (STB MCU)

EEPROM (GenX4)

EEPROM (Peaks)

MICON

TEMP SENSOR

<Purpose>This self check system diagnose main parts.Diagnosis result are indicated “OK” or “NG” like this figure on screen.

<Operation>

If you find diagnosis “NG” ,please replace the indicated parts.

Plasma TV PCB

Troubleshooting Hints (Technical Tip/Bulletin):

Please download pdf files

Thank you

Documents

2007 Viera Plasma TV PCB Component Level Repair Hands-On Seminar Presented by: Rodolfo Abuyuan Panasonic Canada Inc. May/June 2008