Samsung 305T - SyncMaster - 30" LCD Monitor Service Manual page 53

4-2 No Power (Main)
Does proper DC 6V
appear at Pin 1 of
CN601?
Yes
When Pin 1 of IC601 is DC 6V
does proper DC 3.3V appear at
Pin 3 of IC601?
Yes
X-200 oscillate Properly?
(Where pin 9 of IC200)
Yes
Dose proper DC3.3V appear at
pin 34 of IC200
Yes
Dose proper +18V_Panel at pin
9-12 of CN401
Dose proper +24V_IN at
pin 14-16 of CN600
Check LCD Panel and replace LCD
Panel
No
No
No
No
No
Yes
No
Yes
Check Function ass'y.
Check the FP801S at SMPS board
and related circuit
Check IC601 and related circuit.
Check X200, IC200 and related
circuit.
Check IC200 and related circuit.
Check IC401 and related circuit
Check +24 output of the SMPS and
related circuit
4 Troubleshooting
4-3