51
TV-13142
TV-13142W
TROUBLESHOOTING GUIDE
TAPE LOADING IS OK, BUT
UNLOADS IMMEDIATELY
Does CYLINDER rotate ?
Yes
No
No
Yes
Check Power circuit.
In playback, is the
voltage at pin 5 of
CP1005 1.3V ?
No
Yes
No
Dose pin 77 of IC1001
feed DC5V PULSE?
Check R1017 and R1029.
Yes
Replace CYLINDER UNIT.
No
No
Yes
Yes
Replace IC1001 and IC1004.
Yes
No
Check REEL SENSOR.
Is the voltage at pin 2 of
CP1005, unregulated at
12V ?
50 Hz
Does TP1002 feed
HEAD SWITCHING
PULSE signal ?
Does pins 79 and 80 of
IC1001 feed REEL SENSOR
PULSE signal ?
Does PG PULSE
signal, 4.2Vp-p appear
at pin 90 of IC1001 ?