1-13-13 E3TFGTR
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(7) of
IC501?
Re-install the key switches correctly or replace
the defective key switches.
Check the key switches and their periphery, and
service
it if defective.
Check IC501 and
their periphery, and
service it if
defective.
0.51
0.92
1.27
1.61
1.98
2.39
2.90
3.60
4.30
PLAY
FF
REW
POWER
STOP
/EJECT
Terminal voltage of IC501-7
KEY-1
IC501-7
(V)
Replace the RS1501 (remote control receiver) or the
remote control unit.
Check the line between the RS1501 (remote control
receiver) and Pin(14) of IC501, and service it if
defective.
Check IC501 and
their periphery, and
service it if
defective.
Is the "L" pulse sent out from Pin(1) terminal of the
RS1501 (remote control receiver) when the remote
control is activated?
Is the "L" pulse signal supplied to Pin(14) of IC501?
Ye s
Is 5V voltage supplied to the Pin(3) terminal of the
RS1501 (remote control receiver)?
Ye s
Ye s
No
Check SYS+5V line and service it if defective.
No
No
No VCR operation is possible from the remote control. (Operation is possible from the unit.)
S-INH
CH-UP
CH
-DOWN
REC
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