VC-H992U
VC-H992U(A)
36
MECHANISM TROUBLESHOOTING
1. FF/REW FAILURE (NO TAPE WINDING)
Press FF key.
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
Is master cam at
FF position ?
Does loading
motor operate?
Modes changing
smoothly through
cam switch ?
Loading motor
control system
in trouble.
Are Vco 12V and
Vcc 5V applied ?
Replace the
capstan motor.
Replace the idler
ass’y.
Replace the reel
sensor.
Is voltage applied
to loading motor ?
Loading motor is
damaged. Replace
it.
Voltage supply
system in trouble.
Mode sensor
system in trouble
or master cam
malpositioned.
Voltage supply
system in trouble.
Does capstan
motor turn in FF (or
REW) direction ?
Are idler wheel
ass’y and reel disk
in mesh ?
Is the pulse
outputted from reel
sensor ?
The cassette tape
is presumably
damaged.
2. REC/PLAY FAILURE (MODE RELEASE)
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
Is the master cam
at PB position ?
Does loading
motor operate ?
Modes changing
smoothly through
cam switch ?
Loading motor
control system
in trouble.
Are Vco 12V and
Vcc 5V applied ?
Replace the
capstan motor.
Replace the idler
ass’y.
Replace the reel
sensor.
Is voltage applied
to loading motor ?
Loading motor is
damaged. Replace
it.
Voltage supply
system in trouble.
Voltage supply
system in trouble.
Does capstan
motor turn ?
Are idler wheel
ass'y and reel disk
in mesh ?
Is the pulse
outputted from reel
sensor ?
Check main PWB.
Summary of Contents for VC-H992U
Page 5: ...5 VC H992U VC H992U A 1 3 LOCATION OF MAJOR COMPONENTS AND CONTROL ...
Page 50: ...VC H992U VC H992U A 50 8 BLOCK DIAGRAM SYSTEM SERVO BLOCK DIAGRAM ...
Page 51: ...VC H992U VC H992U A 51 ...
Page 52: ...VC H992U VC H992U A 52 SIGNAL FLOW BLOCK DIAGRAM ...
Page 54: ...VC H992U VC H992U A 54 POWER CIRCUIT BLOCK DIAGRAM ...
Page 57: ...VC H992U VC H992U A 57 7 8 9 10 11 12 13 ...
Page 59: ...VC H992U VC H992U A 59 7 8 9 10 11 12 13 ...
Page 61: ...VC H992U VC H992U A 61 7 8 9 10 11 12 13 ...
Page 63: ...VC H992U VC H992U A 63 7 8 9 10 11 12 13 ...
Page 65: ...VC H992U VC H992U A 65 PWB FOIL PATTERN OPERATION PWB A B C D E F G H 1 2 3 4 5 6 7 ...
Page 66: ...VC H992U VC H992U A 66 A B C D E F G H 1 2 3 4 5 6 7 MAIN PWB ...