Marantz DV4400, Руководство по обслуживанию

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1-6-4 E57M2TR
FLOW CHART NO.17
[No Disc] indicated. (When the focus error occurs.)
Replace the DVD Main CBA.
No improvement can be found.
Original DVD Main CBA is poor.
Replace the DVD Mecha.
No
Yes
Yes
FLOW CHART NO.16
The disc tray cannot be opened and closed.
Replace the DVD Main CBA.
Original DVD Main CBA is poor.
Replace the DVD Mecha.
No improvement can be found.
No
Yes
FLOW CHART NO.15
The disc tray cannot be opened and closed. (It can be done using the remote control unit.)
Is the normal control voltage inputted to Pin(8) of
IC2002?
Refer to "FLOW CHART NO.16" <The disc tray
cannot be opened and closed.>
Replace the "OPEN/CLOSE" button (SW6406).
No
FLOW CHART NO.14
No operation is possible from the remote control unit.
Operation is possible from the DVD, but no
operation is possible from the remote control unit.
Replace the infrared remote control receiver (RM2001).
Or replace the remote control unit.
Check the line between Pin(20) of IC2002 and
Pin(22) of CN1001, and service it if detective.
Is the "L" pulse sent out Pin(1) terminal of receiver
(RM2001) when the infrared remote control is activated?
Is the "L" pulse supplied to the Pin(22) of CN1001?
Replace DVD Main CBA.
Yes
Yes
Is 5V voltage supplied to the Pin(3) terminal of
the infrared remote control receiver (RM2001)?
Yes
No
Check EV+5V line and service it if detective.
No
No
Yes
Replace IC2002.
Is the "L" pulse outputted to the Pin(20) of IC2002
when the infrared remote control is activated?
Yes
No