Sharp VC-MH80

MECHANISM TROUBLESHOOTING
1. FFlRON FAILURE (NO TAPE WINDING)
Press FF key.
Is mastercam at FF
Does capstan
NO
motor turn in FF (or +
Are Vcol2V and NO
s
Voltage supply
REW) direction ?
Vcc5V applied 7 -
system in trouble.
NO
Does loading
motor operate ?
NO
Is voltage applied NO
to loading mbtor ? -
Voltage supply
system in trouble.
Modes changing NO
Loading motor is
smoothly through - damaged. Replace
cam switch 1 it.
YES
Mode sensor
Loading motor
system in trouble
control system in
+ or master cam
trouble.
malpositioned.
YES
r-l
Replace the
capstan motor.
Are idler gear and
NO
Replace the idler
reel disk in mesh ?
ass’y.
YES
I--
The cassette tape
is presumably
damaged.
2. REUF’LAY FAILURE (MODE RELEASE)
4
I
Is the master cam NO
Does loading
NO
Is voltage applied NO
Voltage supply
at PB position ?
motor operate ?
to loading motor ? system in trouble.
I
t
Does capstan
motor turn ?
NO
Are Vcoi 2V and
- Vcc5V applied ?
NO
-
Voltage supply
system in trouble.
YES
YES
Replace the
capstan motor.
1
Are idler gear and NO
Replace the idler
reel disk in mesh ?
ass’y.
1
+
YES
Check main F%VB.