4-2
4. Troubleshooting
4-2. No Power
Symptom
The LED on the front panel of the monitor does not work when the power is connected and the
-
Power button is pressed.
Major
checkpoints
Check if the Power switch on the rear panel of the monitor has been turned on.
-
Check the SMPS fuse and the IP-Board output power.
-
Check the connection between the IP-Board and the Main Board inside the monitor.
-
Check the power part of the Main Board and check if a similar symptom appears at another
-
output terminal.
Diagnostics
Main Board Front
CN1001
IC1023
IC4010
Yes
No
Does proper 14.5V appear at pin
No. 2 of CN1001?
①
Does proper 5V appear at pin No.
6 and 7 of CN1001?
②
Check IP Board
Yes
No
Does proper 3.3V appear at pin
No.1 of IC1024?
②
Check related circuit of IC1024.
No
Does proper 14.5V appear at
BD1013?
①
Does proper 5V appear at
BD1021?
②
Check related circuit of CN1001.
Yes
Yes
No
Does proper 14.5V appear at
IC1023?
③
Check related circuit of IC1022.
Change main board for
Scaler(IC4010) problem
Caution
Make sure to disconnect the power before working on the IP board.
Содержание SyncMaster P2770HD
Страница 7: ...1 4 1 Precautions Memo ...
Страница 18: ...4 3 4 Troubleshooting 4 2 1 Circuit diagrams when the power does not turn on ...
Страница 19: ...4 4 4 Troubleshooting 4 2 2 Waveforms ...
Страница 21: ...4 6 4 Troubleshooting 4 3 1 Circuit diagrams and waveforms Analog when no screen is displayed on the monitor ...
Страница 22: ...4 7 4 Troubleshooting 4 3 2 Waveforms ...
Страница 27: ...4 12 4 Troubleshooting 4 5 2 Waveforms ...
Страница 62: ...6 1 6 Wiring Diagram 6 Wiring Diagram 6 1 Wiring Diagram Main Board ...
Страница 65: ...6 4 6 Wiring Diagram Memo ...