PANASONIC PDP-2012, PDP-2011, PDP-2010 TECHNICAL GUIDE

Model No. PDP-2012

Hints for SC/SN Board Repair

( PDP 2012 - 2010 model )

Order No. ITD1212911GE

PDP-2011 PDP-2010

Issue date : Dec. 2012

c

Panasonic Corporation 2012

Unauthorized copying and distribution is

a violation of law.

1

< Caution >

1. (HD model = X/C/A series only)

Before checking the SN board with the TV set,

check all key components with multi meter.

Depending on the defective area of SN board,

SS board damage may occur.

2. All key components must be checked and

all defective components must be replaced at the same time.

If some defective components remain,

other components may become damaged again.

3. When assembling the SN/SC board to the TV set, the screws must be properly fastened.

If screws are loosely tightened, there is a possibility

of shutdown or board damage.

2

Contents

1.Block Diagram ( Difference of ’10/’11/’12 )

< 2012 model >

2-1.Explanation of Scan Board Operation and Check Point

2-2.Check List

2-3.Repair Data

< 2011 model >

3-1.Explanation of Scan Board Operation and Check Point

3-2.Check List

3-3.Repair Data

< 2010 model >

4-1.Explanation of Scan Board Operation and Check Point

4-2.Check List

4-3.Repair Data

3

1.Block Diagram ( Difference of ’10/’11/’12 )

4

Panel drive ( 2012/2011 Full-HD model (except 42inch) )

SU

Vscn Gen.

VFO

VFG

VSUS

P board

VSUS

VOL

SC

SS

P board

VSUS

Ve Gen.

PDP panel

SD

< 2012 model >

< 2011 model >

Vad Gen.

VSUS

T*-P42GT50/ST50* :TNPA5523** T*-P42UT50* :TNPA5620**

T*-P42 ST30/UT30/S30/U30* : TNPA5349** T*-P42 VT30/GT30* : TNPA5330** T*-P42 G30 : TNPA5457**

PDP panel

5

Panel drive ( 2012/2011 42inch Full-HD model )

VSUS

Vscn Gen.

VFO

VFG

VSUS

P board

VSUS

VOL

SN

SS

P board

VSUS

Ve Gen.

PDP panel

< 2012 model >

< 2011 model >

Vad Gen.

VSUS

T*-P42GT50/ST50* :TNPA5523** T*-P42UT50* :TNPA5620**

T*-P42 ST30/UT30/S30/U30* : TNPA5349** T*-P42 VT30/GT30* : TNPA5330** T*-P42 G30 : TNPA5457**

PDP panel

6

Panel drive ( 2012/2011 HD model )

VSUS

Vscn Gen.

VFO

VFG

VSUS

P board

VSUS

VOL

SN

MID

SS

P board

VSUS

Ve Gen.

PDP panel

< 2012 model >

< 2011 model >

( only 2011 )

Vad Gen.

VSUS

T*-P42X5/X50/C5/C50*, TC-P46X5* :TNPA5592** T*-P50X5/X50/C5/C50* :TNPA5593**

T*-P42X3/X30/C3/C30*, TC-P46X3* : TNPA5311** T*-P50X3/X30/C3/C30* : TNPA5312**

PDP panel

7

Panel drive ( 2010 Full-HD model )

SM board (only 42inch)

Vscn Gen.

VFO

SU

VFG

VSUS

VOL

P board

VSUS

SC

SS

P board

VSUS

Ve Gen.

Vad Gen.

SD

PDP panel

T*-P42/46/50/55 VT20/VT25/GT20/GT25/V20/G20/G25/S20/S2* : TNPA5081** T*-P42/46/50 S20/S25/S2/U20/U2* : TNPA5105** T*-P58/65 VT20/VT25/S20/S2* : TNPA5175**

VSUS

PDP panel

8

Panel drive ( 2010 50/37inch HD model )

P board

SU

SD

VSUS

Vscn Gen.

VFO

VFG

Vad Gen.

VSUS

VOL

VSUS

SC

SC3 SS3

MID

SS

VSUS

Ve Gen.

PDP panel

T*-P50 C2/X2/X20* : TNPA5063** TX-P37 C2/X20/X25* : TNPA5062**

9

Panel drive ( 2010 42/46inch HD model )

P board

VSUS

Vscn Gen.

VFO

VFG

Vad Gen.

VSUS

VOL

VSUS

SN

SN3 SS3

MID

SS

VSUS

Ve Gen.

PDP panel

VSUS

T*-P42X2/X20/C2/C20/A20*, TC-P46C2* : TNPA5066**

PDP panel

10

< 2012 model >

2-1.Explanation of Scan Board Operation

and Check Point

11

Check Flow of SC/SN Board Repair

< 2012 model >

Before power-on for checking, replace all defective components in BLOCK 1, 2 and 3.

Block1.

Check of IGBT/Tr (C-E),

FET (S-D) and Diode

All OK

Block2.

Check of Scan Drive IC

(Only SN board)

All OK

Block3.

Check of power circuit

Shorted

Block1

Check also control

signal drive circuit

All OK

Shorted

Replace the defective

components

Replace the defective

components

Replace the defective

components

All OK

Power on check

After replacing all defective component, Check with power. (especially HD model)

NG

Other Block. Check the SOS circuit and feed back circuit

Check the control signals

( Photo Coupler )

12

Block Diagram of Scan Pulse Drive

< 2012 model >

Scan pulse output waveform is produced by switching of Vsus/Vad/GND.

( Energy recovery circuit )

C16631-

632

L16411-

Q16451

-452

GND

12

Q16401

- 403

Q16441

-443

Vsus

GND

Vsus

VOL

Q16421

-423

Q16600

-601

Q16621

-623

C16813

-

+

GND

Vscn

+

-

Vad

Q16661

VF0

Vscn

C16842

VFG

Vad2

Full-HD model only

Q16660

Vscn shifted

. . .

Only SN board (SC board is separated to SU/SD board)

SN board of HD model (not Full-HD model)

SN2

To PSS board

L16441

Q16451

D16481D16461

Q16441

< VFG waveform (VFO is added Vscn voltage to VFG) >

Vsus

GND

(Vscn)

Vad

13

Block1. Short Circuit Check of the Switching Component and Diode

< 2012 model >

Check the short circuit “all” of the below switching components.

( just check short or not )

In many cases, there are several defective components at the same time.

Check parts ( Defective parts ) :FET(D-S) , Transistor (C-E) , Diode (K-A)

Q16401 - 404 / D16401 - 404

Q16421 - 424 / D16421 - 424

Q16621 - 625 / D16641 - 644

Q16661 / D16673 - 674

Q16660 / D16652 Full HD Only

Q16600 - 601 / D16618, R16601 ( open check)

Q16441 - 443 / D16481 - 483

Q16451 - 453 / D16461 - 463

D16430, D16432, D16434, D16435

D16430, D16432

D16722, D16723, D16725

The Scan board is producing the scan pulse output (VFO and VFG) by switching of several kinds of voltage. ( refer to the next page ) In main case of the defect, these switching parts are short-circuited.

14

BLOCK1 Drive Circuit ( Switching Control Signal )

If drive IC is defect (=always output switch-on signal), the switching component must be damaged. Check also the drive circuit when the switching component is defect.

< 2012 model >

< example: IC16501,16521 >

IC16501

Buffer (Drive IC)

IN OUT

VOL+15V

VOL

IC16521

Buffer (Drive IC)

VDD

(GND)

R

C

If these switching components are defect, check also Drive components.

Vsus

Q

VOL

Vsus

VOL

GND

VOL

15V

GND

VDD

Q

IN OUT

R

VS

C

15

How to check the Drive ICs and Power IC

We can check the power IC and drive IC by DIODE CHECK. The check terminal is as below.

< 2012 model >

BLOCK1

BLOCK3

(Explanation

is as later

page)

IC

Except T*-P42GT50/ST50/UT50 (Except TNPA5523/5620)

Only T*-P42GT50/ST50/UT50 (TNPA5523/5620)

IC16784, IC16786

(power IC)

IC16795

(power IC)

IC16501, 16502, 16521, 16522

(IC15603,16504,16523,16524)

(Drive signal for

switching components)

IC16501, 16502, 16521, 16522

(Drive signal for

switching components)

1 2 3

Vout com Vin

Diode check ( Check pin : Normal voltage )

1pin (+) and 4 pin(-) : 0.45V +/- 0.2V

1pin (+) and 7 pin(-) : 0.45V +/- 0.2V

1pin (+) and 8 pin(-) : 0.5V +/- 0.2V

3pin (+) and 1 pin(-) : 0.5V +/- 0.2V

3pin (+) and 2 pin(-) : 0.55V +/- 0.2V

3pin (+) and 7 pin(-) : 0.55V +/- 0.2V

8pin (+) and 1 pin(-) : 0.45V +/- 0.2V

8pin (+) and 3 pin(-) : 0.6V +/- 0.2V

8pin (+) and 4 pin(-) : 0.6V +/- 0.2V

8pin (+) and 5 pin(-) : 0.45V +/- 0.2V

2pin (+) and 1 pin(-) : 0.5V +/- 0.2V

2pin (+) and 3 pin(-) : 0.45V +/- 0.2V

IC16725

(power IC)

Don’t mistake the polarity.

Diode check

i

12pin (+) and 1 pin(-) : 0.5V +/- 0.2V

12pin (+) and 24 pin(-) : 0.4V +/- 0.2V

example

0.6V

+ -

16

Block2. Short circuit check of Scan Drive IC (Only SN Board)

< 2012 model >

Check the short circuit between VFG and VFO. If shorted, some of the Scan Drive IC is

defective. You can find the defective IC by checking the short circuit between VFG and all output pin of Scan Drive IC (same as all pin of Connector SN11-18/21-28).

IC14901

Scan Drive

IC

Scan Drive

IC

IC14902

IC14953

Scan Drive

IC

Scan Drive

IC

( Energy recovery circuit )

C16631-

632

L16411

Q16451

-452

GND

-12

Q16401

- 403

Q16441

-443

Vsus

VOL

Q16421

-423

Q16600

-601

Q16621

-623

Vscn

TPSC1/ TPSN1

VF0

+

Vscn

-

VFG

Vad

+

Q16661

SN11/21

SN12/22

. . .

Output pin

SN17/27

SN18/28

GND

SN board of HD model (not full-HD model)

SN2

To PSS board

L16441

Q16451

D16481D16461

Q16441

GND

Check short circuit (refer to next page)

IC14954

Scan Drive IC

Only SN board (SC board is separated to SU/SD board)

Output pin

17

BLOCK2. Short circuit check of Scan Drive IC (Only SN Board)

All

Output

VF_G

18

How to replacement of PDP Scan Driver IC on SN board

1/2

1. Remove silicon glue by plastic plate.

3. Remove IC

Remove by tweezers

2. After removal, put the low temperature solder

(Part No.:RFKZ0316) on to the solder of IC.

4. Cleaning

Low temperature solder

(Part No.: RFKZ0316)

Blotting wire

(Local procurement)

Completion

How to replacement of PDP Scan Driver IC on SN board

5. Installation of IC

2/2

6. Cleaning

7. Spreading of silicon glue

Silicone glue

Incase of Local procurement

*Product name:

http://www.dowcorning.com

(Part No.: T8CJ011)

DOW CORNING(R) SE9189L GRAY RTV

Soldering

spread

CompletionPositioning

CompletionWashing Wiping

Thicken time : 10 minute

The installation complete

Block Diagram of Power Supply Circuit

All power supply circuit start automatically, when Vsus is input. Vad, Vscn, F15V, and 5V_F are regulated from VFG. So when you check the voltage, please confirm that basis is VFG.

SN2

SC2

Vsus(205V)

C16411

-415

Full-HD model only

P board

1

6

+

3

1

A board

< 2012 model >

SN20

SC20

30

1 2

P5V

P15V

T16471

DC/DC

IC16784

GND

Vad2

+

D16712

D16711

(60V)

VFG

Vad

+

(200V)

C16813

T16472

DC/DC

IC16786

GND

D16713

-714

C16842

VFG

Vscn (TPSC1)

(147V)

+

D16728

C16793

The value is one example of 50ST50 product.

(Vad / Vscn are different by each model)

Please check the accurate value by Service Manual.

+

(F20V)

(18V)

Regulator

IC16795

VFG

F15V

(14.6V)

Regulator

/

Detection

IC16725

VFG

F5V

22513

(5V)

21

Block3. Short Circuit Check of Power Line and Check the Output Voltage

Check the short circuit of power line. If it is not short circuited, then check the output voltage with the unit just before shutdown. The block diagram of power supply circuit is described to the next page.

Symptom

(just for reference)

Except 6,7 blinks

7 blinks

Output voltage / Check parts

Vsus : input from P board

(C16411 – 16415, 16507) ,

(R16503, 536, 537,605,618, 902, D16536, C16502, 505, 531, 891 )

( IC16784(*2) or D16833, T16471,

IC16785, PC16897 )

Vscn , 16V_F

Basis of output voltage (*3)

From GND

from VFGVad

from VFG

Output voltage value

(*1: Depend on the model)

213V/210V/189V from GND

15.6V from GND From GNDP15V : input from P board

205V/200V/195V from VFG

147V from VFG (*3)

< 2012 model >

(*3)

( IC16786(*2) or D16720, T16472,

IC16787, PC16723 )

7 blinks

(*1) This value is different by each model.

So please check the accurate value by the Service Manual.

(*2) The check of these components is not only

short circuit check also diode check. Refer to the later page.

15V_F

( IC16795(*2) )

( IC16725(*2) )

from VFG

from VFG5V_F

(*3) Be careful

The basis is not GND. If you check by oscilloscope, don’t plug in the ground pin (3rdpin) of the oscilloscope. Isolate it from the earth of AC inlet.

18V from VFG (*3)

14.6V from VFG (*3)

5V from VFG (*3)

( This picture is a Japanese type )

Ground pin

(3rdpin)

22

Other Block. Check the SOS Circuit-1 ( 2012 Full HD）

Monitor MID

< 2012 model >

If this voltage is out of range, PC16581 is change to off.

SN20

SC20

28

A baord

SOS6

(Normal = Low)

If this signal is high(5V),

Normal = on

PC16581

(Photo coupler)

Inverter

(IC16563)

8 9

(5V)

LED

P15V

47k

22k

56k

Q16581

(Low V= stop)

Normal

D16582

(33V)

10k

D16581

(33V)

47k+47k

High V

37.4k

(=about half of Vsus)

ERR

ERM

L16411

-13

ERF

C16631

-632

Q16451

-452

GND

6blinks occurred.

The value is one example of 50ST50 product.

(Vscn / Vad and Zener diode are different by each model)

Please check the accurate value by Service Manual.

23

Other Block. Check the SOS Circuit-2

< 2012 model >

Monitor 15V_F / 5V_F

SN20

4

Buffer

(IC

16563)

3

2

SC20

25

SOS7

A baord

(IC16561)

Switching signal for Scan output

Vdd (DC/DC of Vad)

Vdd (DC/DC of Vscn)

Hi = SOS

Low = enable

19

Buffer

Normal = on

(6V)

P5V

Buffer

(IC

16563)

1

main_stop0

(Normal = Low)

PC16480

(Photo coupler)

Vad

F5V

560

1k

18

K

IC16471

Shunt

REG

A

VFG

If (F18V) rises than 25.2V from VFG or F5V drops below 3.5V from VFG or CHA line cuts, FET of 18 pin switch off. Then photo coupler changed to off, and

main_stop0 signal changed to high.

IC16725

(F18V)

D16791

(24V)

D16475

(5.1V)

1k

10k

VFG

(Normal = High)

REF

(F18V)

7

VFG

Vscn

20k

Q16471

7

2.2k

VFG

Vad

D16473

59k

F15V

5.6k

VFG

CHA

20

SC50

2

1

SCNR_PRO

VFG

SU

Board

SD

board

5V_F

PC16896

VFG

(Vz=33V)

Q16815

VFG

10k

VFG

82k+61.9k

If Vscn or Vad rises, Transistor Q16815 is ON.

37.4k

The value is one example of 50ST50 product. Please check the accurate value by Service Manual.

24

Other Block. Check the Feedback Circuit

< 2012 model >

Monitor VOL ( feed back to control IC)

SN20

SC20

Inverter

(IC16563)

UHZ

22

6 5

LO

12

L O G

I

Comparator

(IC16921)

+

-

+

-

REF 1.2V

P15V

22.6k

VTH2

1.47k

VTH1

8

7

976

VTH3

5.23k

Vad

69.8k+82.5k+82.5k

RAMP1

9

=234.8k

3.09k

RAMP2

7.87k

This signal is Feedback signal to discharge control IC on A board. (If no feed back,

8 time blinks)

The value is one example of 50ST50 product.

C

VOL

120k+120k+120k

+

-

REF 2.5V

10

RAMP3

=360k

5.11k

25

Supplement ( flow of control signal for scan pulse switching ）

Scan pulse output waveform is produced by the many switching.

< 2012 model >

GND

IGBT

Driver3

(IC16524)

CSL

IGBT

Driver1

(IC16503)

CMH

L16411-12

C16631

-632

Q16451

-452

Q16401

FET

Driver1

(IC16600)

CPH1,CSH

IGBT

Driver4

(IC16504)

CSH,nCPH1

- 403

Q16441

-443

IGBT

Driver2

(IC16523)

CML

Vsus

GND

VOL

Q16421

-423

Vsus

(Q16762)

CIS,CEL

Q16600

Q16621

-623

IGBT

Driver5

-601

IGBT

Driver6

(IC16921)

nCEL,

-

+

GND

Q16661

CELR

Vad

Vscn

+

Vscn

-

Vad2

Q16646,647,660

Vscn shifted

VF0

To SU/SD board

VFG

26

< 2012 model >

）

PC16461

PC16462 PC16461

IC16523 IC16524

Q16820

PC16685

Q16646,647,660

SD board

IC16921

PC16685

Supplement ( flow of control signal for scan pulse switching

IC16561

Q16921(IC16921)

27

< 2012 model >

2-2-1.Check List of HD model-SN Board

T*-P42X5/X50/C5/C50*, TC-P46X5* :TNPA5592** T*-P50X5/X50/C5/C50* :TNPA5593**

Check all components of this list, then try to power on.

28

Check List (1/2)

< HD model-SN board >

T*-P42X5/X50/C5/C50*, TC-P46X5* :TNPA5592**

T*-P50X5/X50/C5/C50* :TNPA5593**

< 2012 model >

( ### )notation: only 50inch model=TNPA5593**

BLOCK1

Reference No.

Q16401, Q16402, D16401, D16402, (D16403)

#:Because of parallel circuit, check one of 5.

Q16421, Q16422, D16421

#:Because of parallel circuit, check one of 3.

Q16621, Q16622, D16641, D16642, (D16643)

#:Because of parallel circuit, check one of 5.

Q16661, D16673, D16674 #:Because of parallel circuit, check one of 3.

Q16601, D16618, R16601

Q16441, D16481

#:Because of parallel circuit, check one of 2.

Q16451, D16461 #:Because of parallel circuit, check one of 2.

D16432, D16435, D16722, D16723, D16725

D16432

Check

(Drive Circuit)

IC16501, R16401, R16402

IC16521, R16421, R16422

Q16762, R16761, R16621, R16622, R16681, R16682

D16668, R16661

IC16600, R16612

IC16502, C16531, R16441

IC16522, C16551, R16451

---

Check

If defective, check also drive circuit

Q##, D## C## : Short check, R## : Open check, IC## : Diode check (refer to later page)

29

Check List (2/2)

< HD model-SN board >

T*-P42X5/X50/C5/C50*, TC-P46X5* :TNPA5592**

T*-P50X5/X50/C5/C50* :TNPA5593**

< 2012 model >

CheckReference No.

BLOCK2

BLOCK3

Q##, D##, C##, IC14### : Short check, R## : Open check, IC16### : Diode check (refer to later page)

Short check between VFG and VFO.

If shorted, then short check output of each scan drive IC, IC14901, 14902, 14903, 14904, 14951, 14952, 14953, 14954

IC16784, D16833, C16833

IC16786, D16720, C16834

IC16795, C16793, C16796

IC16725, C16723, C16724, C16725

C16411, C16412

#:Because of parallel circuit, check one of 2.

30