Toshiba D-VR7KC, Service Manual

Page: 28 / 115

1-10-5 E9KG0TR
2 DVD Section
Yes
Yes
No
No
FLOW CHART NO.1
The key operation is not functioning.
Are the contact point and the installation state of
the key switches normal?
Is the control voltage normally inputted into
Pin(85) of IC1501?
Re-install some key switches correctly or
replace P1 (BOARD MCV) if defective.
Check the key switches and their periphery, and
replace P1 (BOARD MCV) if defective.
Check IC1501 and their periphery, and replace
P1 (BOARD MCV) if defective.
Check IC1501 and their periphery, and replace
P1 (BOARD MCV) if defective.
Yes
FLOW CHART NO.3
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(85) of
IC1501?
Replace P2 (DVD MECHANISM & DVD MAIN
BOARD ASSEMBLY).
Replace P1 (BOARD MCV) if defective.
No
FLOW CHART NO.2
Replace P1 (BOARD MCV).
Or replace remote control unit (X1).
Check the line between the RS1501 (remote
control receiver) and the Pin(5) of IC1501, and
replace P1 (BOARD MCV) if defective
Is the "L" pulse sent out from Pin(1) terminal of
the RS1501 (remote control receiver) when the
remote control unit is activated?
Is the "L" pulse signal supplied to the Pin(5) of
IC1501?
Yes
Is 5V voltage supplied to the Pin(3) terminal of
the RS1501 (remote control receiver)?
Yes
Yes
No
Check AL+5V line and replace P1 (BOARD MCV)
or P3 (BOARD POWER SUPPLY) if defective.
No
No
No operation is possible from the remote control unit. (Operation is possible from the unit.)
0.51
0.92
1.27
1.61
1.98
2.39
2.90
3.60
4.30
S-INH
-----
DVD REC
/OTR
OPEN/
CLOSE
DUBBING
DVD
PLAY
DVD
STOP
-----
-----
Terminal voltage of IC1501-85
KEY-2
IC1501-85
(V)