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INF-14
SECTION 1 SERVICE INFORMATION
4. 3. Troubleshooting flow
4. 3. 1. No power
11
5. Troubleshooting Guide
5.1 No Power
No power (LED “Off”)
Check the AC input and
the power is “ON”?
the power is “ON”?
Power “On”
Power board CN924 Pin
2/3 output=5.2V?
Replace the Power board
Yes
No
Yes
No
Use RC or Key to turn on
the PD
No
Yes
1. RC can turn on the PD and Key can’t,
replace the key board.
2. Key can turn on the PD and RC can’t,
replace the RC.
Replace the Main board
12
5.2 Abnormal Display
Abnormal Display
Replace LVDS Cable
Replace the main board
Replace the panel
No
No
Yes
No
Enter factory mode
to Reset
to Reset
Replace the main board
No
Yes
Reset
Check the OSD is
normal?
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