TM 32-5835-005-14 & P
Section
III.
TROUBLESHOOTING
-
Continued
b. To troubleshoot without tape, hold
d. If push buttons do not light, check
mode command button in 10 seconds.
switch and lamp.
8-8. Power Supply System.
e. Press REPRO push button, the take-
up motor should run.
a. Connect unit to 115VAC source.
End-Of-Tape Sensor/Tone.
8-10.
b. Place CASSETTE MODE KNOB in STAND-
Deleted.
BY position.
c. Throw POWER toggle switch to ON
osition.
d. Measure voltages at TP-1, TP-2 and
TP-3 on power supply card A1A7.
e. The power on lamp should light and
24VDC should appear at its socket.
f. If voltages are not correct or
present, troubleshoot the line cord,
circuit breaker, power switch, trans-
former bridge rectifier and the 24VDC
reulators.
Note: A1Q1, next to the power trans-
former is part of the 24VDC line.
8-9. Control Logic System.
a. Replace control logic board A1A6.
There are no adjustments on this board.
b. Activate push buttons as follows:
(1)
REPRODUCE - STOP.
(2)
FAST FWD - STOP.
(3)
REWIND - STOP.
(4)
RECORD/REPRODUCE - STOP.
c. Indicating lamps should illuminate
when push buttons are pressed and re-
main illuminated until STOP is pressed.
The indicator lamps will only light if
the CASSETTE MODE switch is in STANDBY.
8-5
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