Nokia 920C Service Manual page 26

5 Troubleshooting
5-1-19 User Control Failure
Check connector Ass'y.
IC201 Pins 35 and 36 inputs are
right at each function.
Yes
Check and replace IC201.
Done
5-1-20 Degaussing Failure
Check degaussing connector.
RL601 operation is right?
No
Q630 base input is right?
No
IC201 Pin 40 output is right?
Yes
R217 and R630 are right?
Yes
Done
5-12
No
Check and replace function key.
Yes
Check D-Coil, TH601.
Yes
Check and replace Q630.
No
Check and replace IC201.
Check user function key.
No
Replace R217 and R630.
720C/920C