Nokia 920C Service Manual page 30

5 Troubleshooting
5-2-5 Unsynchronized Image
Check input signals Pins 1, 2
and 3 of D-SUB connector.
Are signals right?
Yes
Signals at Pins 1, 3 and 5 of IC1
are right?
Yes
Signals at CN201 Pins 6, 9 and
CN102 Pin 6 are right?
Yes
Check circuits on Main board.
(IC201 and IC261)
Done
5-16
No
Check Video cable.
No
Replace IC1.
No
Check wire dressing and connections.
720C/920C