LG HB1803R 사용자 설명서

• Check the Fuse.
• Check the wiring diagram.

Is the 

Trans input power AC 115V?

(208/230V for LWL1230WAL)

Is the Trans output power

about AC 14V?

Is shorted the Trans. output?

Is output Voltage of IC01D

DC 12V?

Is output Voltage of IC02D

DC 5V?

Is the voltage No.18 of Micom

DC 5V?

Replace AC PCB Ass'y.

Is the 

connection between

AC and DC 

OK?

Is the reset circuit OK?

(The No.14 of

Micom is 5V.)

• Check the Main 
  PCB pattern.

• Replace the Trans.

• Replace D02D~D05D.
• Replace IC01D.

• Replace IC02D.

• Replace IC01A, C02A.

• Connect connector
  exactly.

• Check the PCB 
  pattern.

NO

NO

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

YES

YES

NO

YES

The unit does not operate.