TROUBLESHOOTING GUIDE
E-15
TAPE LOADING IS OK, BUT
UNLOADS IMMEDIATELY
Does CYLINDER rotate ?
No
Yes
No
Yes
Is the voltage at pins 2
and 8 of CP1001,
unregulated at 12V ?
Check Power circuit.
No
Yes
Yes
No
In playback, is the
voltage at pin 12 of
CP1001 3.6V ?
Does pin 76 of IC1001 feed
DC5V PULSE ?
Replace CYLINDER UNIT.
Check R1020.
No
Yes
Yes
No
Does PG PULSE signal,
appear at pin 90 of IC1001 ?
Replace IC1001.
Yes
No
Check REEL SENSOR.
Does pins 79 and 80 of
IC1001 feed REEL
SENSOR PULSE signal?
30 Hz
Does TP1002 feed HEAD
SWITCHING PULSE signal ?
