Toshiba DVR19DTKB2, Service Manual

Page: 34 / 124

1-11-11 E9TK3TR
3 VCR Section
Yes
Yes
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 some key switches correctly or replace
P1(AV ASSEMBLY).
Check the key switches and their periphery, and replace
P1(AV ASSEMBLY) if defective.
Replace P1(AV ASSEMBLY).
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).
Replace P1(AV ASSEMBLY) or remote control (X1).
Check the line between the RS1501 (remote control
receiver) and Pin(14) of IC501, and replace P1(AV
ASSEMBLY) if defective.
Replace P1(AV ASSEMBLY).
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?
Yes
Is 5V voltage supplied to the Pin(3) terminal of the
RS1501 (remote control receiver)?
Yes
Yes
No
Check SYS+5V line and replace P1(AV ASSEMBLY)
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