TROUBLESHOOTING GUIDE
CYLINDER NOT ROTATING
DURING PLAYBACK AND
RECORDING
Yes
No
Yes
No
Check AT +12V line and POWER
BLOCK.
In playback, is the
voltage at pin 12 of
CP1001 about DC2.6V ?
Check IC1006.
Replace CYLINDER UNIT.
Is AUDIO HEAD scratched ?
No
Yes
AUDIO SHAKES
Replace AUDIO HEAD.
Does pins 9 and 42 of
IC1006 output a 3.0Vp-p
square wave ?
No
Replace CAPSTAN DD MOTOR.
Yes
Yes
In playback, is the
voltage at pin 9 of
CP1001 about DC2.6V ?
Replace IC1006.
Check AUDIO BLOCK.
Is the voltage at pins 2
and 8 of CP1001 about
DC12V ?
E-14
No