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Troubleshooting
4-2
Samsung Electronics
■ Flow Chart for Malfunction
No
Check Cables connected to DMD Board
(CN801 Pin 18).
If necessary, replace DMD Board.
Check Cables connected to DMD Board
(CN801 Pin 21, 22).
If necessary, replace DMD Board.
No
No
Check Sub SMPS
Is LED for illumination off?
Yes
1) Check the LVDS Cable
connected between the Main
Board and the DMD Board.
If necessary, replace LVDS Cable.
Check Cables connected to
DMD Board. If necessary,
replace DMD Board.
No
Yes
12V OK?
(Pin 18)
5V OK?
(Pin 21/22)
Yes
16V OK?
(Pin 2/4/6)
Yes
Check Driver Power
(CN9005)
Yes
Operate driver in internal mode
(grounding R9010) LED On?
Yes
Yes
No
Replace driver
Can you see anything
on the screen?
Can you see OSD menu
running on the screen?
Can you see Digital
Channel broadcast ?
Check Cables connected to
Main Board. If necessary,
replace the Main Board
Check the Power Cord
Replace the Main Board
Yes
Yes
Yes
No
No
No
No
Does the TV turn on?
Yes
Check Logic Power
(CN9007)
Check Cables connected to
DMD Board.
If necessary, replace DMD Board.
R9010 Gronding
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