36
VC-A415U/H815U
VC-H817U/H818U
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 23V 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 23V 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.
Содержание VC-A415U
Страница 48: ...VC A415U H815U VC H817U H818U VC A415U H815U VC H817U H818U 50 51 8 BLOCK DIAGRAM SYSTEM SERVO BLOCK DIAGRAM ...
Страница 51: ...56 VC A415U H815U VC H817U H818U POWER CIRCUIT BLOCK DIAGRAM ...
Страница 61: ...72 VC A415U H815U VC H817U H818U M E M O ...
Страница 78: ...Ref No Part No Description Code Ref No Part No Description Code 89 VC A415U H815U VC H817U H818U M E M O ...
Страница 79: ...Ref No Part No Description Code Ref No Part No Description Code 90 VC A415U H815U VC H817U H818U M E M O ...
Страница 80: ...Ref No Part No Description Code Ref No Part No Description Code 91 VC A415U H815U VC H817U H818U M E M O ...