Denon DVM-1845/745, Руководство по обслуживанию

Страница: 22 / 58

22
DVM-1845/745
FLOW CHART NO.17
[No Disc] indicated. (When the focus error occurs.)
Replace the DVD Main CBA Unit.
No improvement can be found.
Original DVD Main CBA Unit is poor.
Replace the DVD Mechanism.
No
Yes
Yes
FLOW CHART NO.16
The disc tray cannot be opened and closed.
Replace the DVD Main CBA Unit.
Original DVD Main CBA Unit is poor.
Replace the DVD Mechanism.
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(40) of
IC3001?
Refer to "FLOW CHART NO.16" <The disc tray
cannot be opened and closed.>
Replace the "OPEN/CLOSE" button (SW2215).
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(1) of RM2001 and
Pin(14) of CN3102, and service it if defective.
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(14) of CN3102?
Replace the DVD Main CBA Unit or DVD Mechanism.
Yes
Is 5V voltage supplied to the Pin(3) terminal of
the infrared remote control receiver (RM2001)?
Yes
No
Check CHG+5V line and service it if defective.
No
No
Yes
Check the line between Pin(1) of RM2001 and
Pin(6) of IC3001, and service it if defective.
Is the "L" pulse supplied to the Pin(6) of IC3001?
Yes
No