5-9
Flowchart No.1
Disabled operation from remote controller
Operation from remote controller is disabled though
operation is enabled from a key on main set
Is the power turned on by Power ON button
of remote controller?
Replace the Main board
Is “L” pulse signal input to CN100 30pin on FL board
when operating remote controller?
No
Is “L” pulse signal input to CN102 3pin on FL board
when operating remote controller?
Yes
Yes
No
NO
NO
Symptom improved after FR board was replaced?
Replace the FL board flexible cable (FLR-013)
Yes
Check peripheral parts of IC601
(light receiver from remote controller) on FR board.
If faulty, replace the FR board.
Check/replace the FL board flexible cable (MAIN
h
FL).
If not improved by replacement, replace the Main board.
Yes
Conductor from CN101 2pin to CN100 30pin on
FL board is broken.
Operation & Display Section
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