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- 17 -

1) It is not discharged minutely from the module.
2) Light does not come into the front LED.

Plug in a power cord

No

Yes

Is plug in power
cord inserted ? 

Connect a cable.
Plasma(CN1), LCD(SC100)

No

Yes

Is the Line Filter and
PSU connected?

Replace the fuse.

No

Yes

Is the fuse of  PSU

normal? Plasma(F101),

LCD(f100)

Connect the 13-14pin cable.

After all cables connect is removed
to PSU, the AC voltage marking is
authorized on manual.
When ST-by 5V is not operated,
replace PSU.

No

Yes

Is it connected

that PSU and 13-14pin

cable in VSC

board?

- 18 -

1) After once shining, it does not discharge minutely from module. 
2) The relay falls.(The sound is audible “Click”.)
3) It is converted with the color where the front LED is red from green.

Is the Power Board

normal ?

Replace Power Board.

Is output the normality Low/High
voltage except Stand-by 5V?

Yes

No

No

Is the each

connector normal?

Replace the connector.

Replace the fuse.

Replace Y-Board.

After connecting well each connector,
the normality it operates? 

Yes

No

No

Is the Y-Board

normal?

Is the fuse

(FS2,FS3) on Y-B/D

normal?

Is the output voltage
normal after remove P1
connector of Y-B/D?

Yes

No

No

Replace Z-Board.

Is the Z-Board

normal?

Is the fuse

(FS1,FS2) on Z-B/D

normal?

Is the output voltage

normal after remove P1

connector of Z-B/D?

Yes

No

No

Is the X- Board

normal?

Is the

output voltage

normal after remove P1, 2,

3, 4, 5 connector of

X-B/D?

After remove P1, P2, P3 output voltage
normality: Replace Right X-B/D
After remove P4, P5 output voltage
normality: Replace Left X-B/D

No

Yes

Replace the fuse.

Yes

- 19 -

1) No OSD and image occur at screen. 
2) It maintains the condition where the front LED is green.

Check the PDP/LCD Module

Replace the
Power board.

Does

minute discharge

at Module?

Is the inverter

/VaVs on?

Is output the normality
Low/High voltage
except Stand-by 5V?

Yes

No

No

Is the Link cable

normal?

Yes

Is the IC500’s

output normal?

Reconnect the link cable in
P803(Plasma)/ P804(LCD).

No

Replace the VSC.

No

Yes

Check the power.

Is video

output of the

Tuner normal? (Check

TU400_Pin13)

Is the

input voltage

normal?(Check

Pin3)

Is the I2C communication normal?
(Check Pin9, Pin10)

Yes

No

Yes

Is the LVDS

Cable connected

well?

Yes

Change the IC(IC500)

Cable inserts well.

No

No

Check the Tuner.

No

A

- 20 -

Is video input of

the A/V jack normal?

(Check R172)

Yes

Sam as Block A

Check the input source.

No

Is video input 

of the A/V jack normal?

(Check CN703

Pin9)

Yes

Sam as Block A

Check the input source.

No

Is video input 

of the A/V jack normal?

(Check CN703

Pin9)

Yes

Sam as Block A

Check the input source.

No