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