Hitachi DVPF2E, Service Manual

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E1-8-3
Yes
No
FLOW CHART NO.1
The key operation is not functioning.
Are the contact point and the installation state of
the key switches (SW2012,2011,2016,2017) normal?
Is the control voltage normally supplied to
Pins(3, 4, 7, 8, 10) of IC2001?
Replace the key switches (SW2012,2011,2016,
2017) and their periphery.
FLOW CHART NO.2
No operation is possible from the remote control unit.
Operation is possible from the DVD, but no operation
is possible from the infrared remote control. Replace the remote control unit if necessary.
Replace the remote control receiver.
Check the line between the remote control receiver
and Pin(26) of CN1001.
Replace FFC Cable (JW003).
Is the "L" pulse sent out from Pin(1) terminal of the
receiver when the infrared remote control is activated?
Is the "L" pulse signal supplied to Pin(26) of
CN1001 from Pin(1) terminal of the remote control
receiver.
Is the FFC Cable (JW003) between CN1001 and
DVD Main CBA Unit normal?
Replace DVD Main CBA Unit.
Yes
Yes
Yes
Yes
Yes
Yes
Is 5V voltage supplied to Pin(3) terminal of
the remote control receiver?
Yes
No
No
Check AL 5V line.
No
No
No
FLOW CHART NO.3
The disc tray cannot be opened and closed. (It can be done using the remote control unit.)
The voltage of Pin(25) on CN1001 becomes 0V,
when pressing "OPEN CLOSE" key on the unit.
Refer to "FLOW CHAR NO.4" below.
FLOW CHART NO.4
The disc tray cannot be opened and closed.
Replace DVD Main CBA Unit.
The malfunction of the original DVD Main CBA Unit.
Replace DVD Mechanism.
No improvement can be found.
Check the "OPEN CLOSE" key and SW2014.
No
No
[ DVD SECTION ]