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- 13 -

(Va, Vs Voltage Adjustment)

DMM 1EA

Refer to Fig. 2 

32Inch(Vs: VR851, Va: VR901)

Adjustment method for Power Board 

1) After receiving 100% Full White Pattern, HEAT RUN.
2) Connect + terminal of D. M..M. to Va pin of P812,

connect -terminal to GND pin of P812.

3) After turning VR901, voltage of D.M.M adjustment as

same as Va voltage which on label of panel right/top
(deviation; ±0.5V)

1) Connect + terminal of D. M..M. to Vs pin of P812,

connect -terminal to GND pin of P812.

2) After turning VR951, voltage of D.M.M adjustment as

same as Vs voltage which on label of panel right/top
(deviation; ±0.5V)

(Fig. 2) Connection Diagram of Power Adjustment for Measuring

- 14 -

1) Minute discharge does not occur at module.
2) Front LED does not activate.

Plug in the power cord

No

Yes

Is the power cord

plugged in? 

Connect the cable.

No

Yes

Are the Line Filter and

PSU connected?

Replace the fuse.

No

Yes

Is the correct fuse 

for the PSU in place?

Plasma(F101)

Connect the 15pin cable.

Next remove all cables connected to the PSU and
switch the AV voltage to manual.
If the ST-by 5V does not operate, replace the PSU.

No

Yes

Is the PSU and 

15pin cable connected to

the VSC board?

- 15 -

1) After lighting once it does not discharge minutely from the module. 
2) The relay falls.(there is an audible “Click”.)
3) The color of the front LED turns from green to red.

Is the Power Board

normal ?

Replace the Power Board.

Is the output the normal Low/High

voltage except for the Stand-by 5V?

Yes

No

No

Are all the connectors

normal?

Replace the connector.

Replace the fuse.

Replace the Y-Board.

After checking each connector 

does it operate correctly?

Yes

No

No

Is the Y-Board

normal?

Is the 

appropriate fuse 

(FS2, FS1) on the 

Y-B/D?

Is the output voltage normal

after removing the P1

connector of the Y-B/D?

Yes

No

No

Is the X- Board

normal?

Is the 

output voltage normal 

after removing the  P11, P12,

P13 connector of

the X-B/D?

After removing the P12 and the output
voltage is normal : Replace the Right X-B/D
After removing the P11, P13 and the output
voltage is normal : Replace the Left X-B/D

No

Yes

- 16 -

1) No OSD or image are displayed on the screen. 
2) The front LED remains green.

Check the PDP Module

Replace the

Power board.

Does

minute discharge

at Module?

Is the VaVs on?

Is the output the normal

Low/High voltage except

for the Stand-by 5V?

Yes

No

No

Is the output 

for the IC500

normal?

Replace the VSC.

No

Yes

Check the power.

Is the 

video output of the

Tuner normal? (Check

TU400_Pin13)

Is the

input voltage

normal?(Check

Pin3)

Is the I

2

C communication normal?

(Check Pin9, Pin10)

Yes

No

Yes

Is the FFC

Cable connected

well?

Yes

Change the IC(IC500)

Re-insert the cable.

No

No

Check the Tuner.

No