6-1-3.When Control Key Does Not Operate - Daewoo LM32L1 Service Manual

Main PCBs Trouble Diagnosis

6-1-3.When Control Key does not operate

Check start
After turn on the power,
does LED turn off?
After ST-BY on, Does LED
turn on blue light?
Is output first pin P903 normal?
Check Main PCB
Y
Y
Y
1.Check AC connection
N
2.Check Power S/W ON
3.Check other PCBs
Check the connection of
N
KEY PCB to MAIN PCB
=> Check the connection between
KEY PCB and MAIN PCB
N
1. Replace the connector
2. Replace KEY PCB
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