Samsung UN32D5500RF, Руководство по обслуживанию

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4-4
4. Troubleshooting
No Video_Analog PC signal
„
Symptom Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the PC source
-
Check the Arsenal, Check the Chelsea.
-
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Diagnostics
Main Assy
1 B5V 2 SW_PW
3 B5V 4 A5V
5 GND 6 GND
7 B12VS 8 GND
9 B12VS 10 SW_INV
11 B13V 12 NC
13 B13V 14 DMM
Power Assy
1 B5V 2 SW_PW
3 B5V 4 A5V
5 GND 6 GND
7 B12VS 8 GND
9 B12VS 10 SW_INV
11 B13V 12 NC
13 B13V 14 DMM
Main Ass’y
14p cable
Speaker
Power Ass’y
LVDS cable
T-con
Does the signal appear at
R804(R), R805(G), R806(B)
BD404(H), BD405(V) ?
Does the digital data appear at
TP-EVE, EVEN_TXCLK- ,
OD, ODD_TXCLK- ?
Yes
Yes
Yes
Yes
Yes
Check a set in the ‘Stand-by mode’
or ‘DPMS mode’.
Check external devices and
connections.
Input the analog PC signal properly.
Please, Contact Tech support.
Check CN401, PC cable.
Change the Main Assy
Check IC1001 (X5)
Change the Main Assy.
No
No
No
No
No
No
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Check the PC source and
check the connection of D-SUB ?
check the Self Diagnosis
(Support

Self Diagnosis

Picture Test)
Dose the promblem still exist self diagnosis ?
Check the LVDS cable ?
Check the T-Con B’d ?
Replace the LCD panel ?


Caution Make sure to disconnect the power before working on the IP board.