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Trouble shooting:
Hardware
1. After power on the system, if the FAN doesn’t work or front panel LED light off, the root
cause is POWER SUPPLY error.
2. The front panel LED light is normal and the voice adjustment is normal but the screen can
not display, the root cause is INVERTER error.
3. After power on the system, suddenly the screen can not display, the root cause is
INVERTER error.
4. After power on the system, LCD display error but Key board and other function are normal;
the root cause is LCD MAIN BOARD error.
5. When Video output and Audio output are abnormal, the root cause is IO BOARD and LCD
MAIN BOARD error.
INVERTER
LCD MAIN BOARD
DVR MAIN BOARD
POWER SUPPL
IO BOARD
