Samsung SyncMaster 570PX Training Manual page 76

Troubleshooting – No D V I Video
Troubleshooting – No D V I Video
Does the LED light up when turn on the power?
YES
Does 5 V appear at Pin 14 and 16 of CN101 DVI port?
YES
Does the wave form as the figure appear at R161(DVI_SCL)
8
and R162(DVI_SDA)
YES
Does the signal appear at RA107(R), RA102(G), and RA105(B)?
YES
Does the TX** signal appear at Pin 14 and 15 of CN403?
YES
Check the cable between the main board and panel
and replace the LCD panel.
NO
NO
NO
7
?
NO
IC105 is abnormal. Replace the main board.
NO
CN403
RA102 ,
105,107
CN101 R161
R162
Check the power port.
Check the cable connection.
Replace the main board.
The Scaler (IC408) is abnormal.
Replace the main board.
7
8