1-11-12
E9656TS
3. VCR Section
Ye s
Ye s
No
No
FLOW CHART NO.1
FLOW CHART NO.2
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(85,86) of IC501?
Re-install some key switches correctly or
replace some key switches.
Check the key switches and their periphery, and
service it if defective.
Replace IC501.
0.51
0.92
1.27
1.61
1.98
2.39
2.90
3.60
4.30
S-INH
-----
DUBBING
REC
/OTR
OPEN
/CLOSE
-----
-----
PLAY
STOP
D/V
OUTPUT
CH UP
CH
DOWN
FF
REC
/OTR
PLAY
REW
STOP
/EJECT
POWER
Terminal voltage of IC501-85,86
KEY-1
IC501-86
KEY-2
IC501-85
(V)
Replace the RS501 (remote control receiver).
Or replace remote control unit.
Check the line between the RS501 (remote
control receiver) and the Pin(5) of IC501, and
service it if defective.
Replace IC501.
Is the "L" pulse sent out from Pin(1) terminal of
the RS501 (remote control receiver) when the
remote control unit is activated?
Is the "L" pulse signal supplied to the Pin(5) of
IC501?
Ye s
Is 5V voltage supplied to the Pin(3) terminal of
the RS501 (remote control receiver)?
Ye s
Ye s
No
Check AL+5V line and service it if defective.
No
No
No VCR operation is possible from the remote control unit. (
Operation is possible from the unit.)
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