Daewoo DLP-20D7 - Troubleshooting: Remote Controller Not Operating

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Trouble Shooting
7-8. When Remote Controller does not operate.
Does input of key operate?
Does remote
Controller operate?
Whenever push the button of
Remote controller, does the 2
nd
pin
Of P501A output normal?
Check the I501
Check the battery of
remote controller
Exchange the Key PCB
Check start
Y
N
N
N
Y
Y
Y
Check IR cable and I501
Output of 2
nd
pin of P501A (IR) : PCB for Remote Control EX) Push “PR DOWN” button.