Troubleshooting; No Power - Samsung 171N Service Manual

5 Troubleshooting

Notes: 1. Before troubleshooting, setup the PC's display as below.
• Resolution: 1280 x 1024
• H-frequency: 64 kHz
• V-frequency: 60 Hz
2. If no picture appears, make sure the power cord is correctly connected.
3. If you push and hold the EXIT button for more than 5 seconds, the monitor automatically turns back
to the factory preset.

5-1-1 No Power

When Pin 6 of CN102 is 0V
does proper DC 12V, 5V
appear at Pin 1, 2 and 7 of
CN102 seperately?
Yes
Does proper DC 5 V appear at
Pin 3 of IC102?
Yes
Does proper DC 3.3 V appear at
Pin 3 of IC106?
Yes
Does proper DC 1.8 V appear
at Pin 4 of IC108?
0V means power on state.
GH17A*/GH17L***J
No
Change power Adaptor.
No
Check IC102 and related circuit.
No
Check IC106 and related circuit.
No
Check IC108
and related circuit.
CONFIDENTIAL
5-1