FLOW CHART NO.7
No operation is possible from the remote control unit.
㸣
Is +3.3V_NSW voltage supplied to Pin(3) terminal of
the infrared remote control receiver (IC71)?
㸢No Check +3.3V_NSW line and service it if defective.
㸣Yes
Is the "L" pulse sent out Pin(1) terminal of receiver
(IC71) when the infrared remote control is activated?
㸢No
Replace the infrared remote control receiver (IC71) or
replace the remote control unit.
㸣Yes
Is the "L" pulse supplied to the Pin(4) of IC11? 㸢No
Check the line between Pin(1) terminal of receiver(IC71)
and Pin(4) of IC11, and service it if defective.
㸣Yes
Replace IC11
FLOW CHART NO.8
The disc tray cannot be opened and closed. (It can be done using the remote control unit.)
㸣
Is the normal control voltage inputted to Pin(6) of
IC11? Refer to "FLOW CHART NO.6" <The key
operation is not functioning.>
㸢No Replace the "OP/CL" button (S707).
㸣Yes
Refer to "FLOW CHART NO.9" <The disc tray cannot
be opened and closed.>
FLOW CHART NO.9
The disc tray cannot be opened and closed.
㸣
Check the line between CN23 and IC14, and service it
if defective.
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