6-1-4.When Remote Controller Does Not Operate - Daewoo DLT-26C2 Service Manual

Main PCBs Trouble Diagnosis
6-1-4.When Remote Controller doses not operate
After turn on the power,
does LED turn on red light?
Is Remote Controller working?
Does set working by pressing a KEY button?
When you press button,
does waveform form first pin of J9 normal?
1.IR receiving BLOCK of MAIN PCB is not working.
2.Replace MAIN PCB
A.Check the connection between Main PCB and LED PCB.
B.Check the waveform first pin(IR) of P912B to confirm IR operation.
If IR is not working, replace the LED PCB.
Check start
Y
Y
Y
Y
1.Check AC connection
N
2.Check Power S/W ON
3.Check other BLOCKs
N
Chek the Battery of
Remote Controller
N
Check the connection between
LED PCB and MAIN PCB
N
Replace LED PCB
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