Nokia 920C - General Troubleshooting

5 Troubleshooting
720C/920C 5-13
5-2 General Troubleshooting
5-2-1 No Picture
LED blinks?
LED is green color?
After restart monitor LED doesn't
come on, repair power circuit.
Check signal cable.
Check G2 voltage, high voltage,
R, G, B cathode voltage.
Yes
No
No
LED is Amber color?
No
Yes
5-2-2 Shut down
Yes
5-2-2 Shut Down
Blinking LED’s?
Scan failure
Check horizontal, vertical deflection
system and check power supply
secondary voltages.
No
Yes
Yes
Check power supply.
No
High voltage failure?
Check high voltage system.
Check and replace IC201.
Done
No
Yes
Video failure?
Check Video board.
No
Yes