Sharp VC-M313 (serv.man2) Service Manual / Specification ▷ View online
36
Replace loading motor block.
3. WINDING FAILURE AT VSR
4. UNUSUAL SOUND IN EACH MODE
Is Playback
function normal ?
Master cam
shifting to VSR
position ?
Go to 2. REC/
PLAY FAILURE
routine.
Replace idler
gear ass
’y.
Replace limiter
pulley ass
’y.
Replace reel
sensor.
Go to 2. REC/
PLAY FAILURE
routine.
Are idler wheel
ass
’y and supply
reel disk in mesh ?
Is supply reel disk
winding torque
normal ?
Is pulse outputted
from reel sensor?
Check main PWB.
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
YES
YES
NO
NO
YES
Press REW key.
4-i) Unusual sound in cassette
insertion and ejection mode
Is unusal sound heard during
cassette coutrol running ?
Unusual sound heard with pinch
roller lever going up or down ?
Is unusual sound heard during
loading/unloading ?
Check pinch roller drive cam, pinch roller
drive lever and reverse guide for their actions.
Replace damaged one with new one.
Replace cassette control ass
’y.
37
YES
YES
NO
NO
NO
NO
YES
YES
Replace capstan motor.
4-ii) Unusual sound in FF/REW mode
Is reel disk height as specified ?
Thrust gap found at reel disk ?
part on main PWB ?
Turn capstan motor by hand.
Unusual sound heard ?
’s gears for
damage. Replace damaged gear
with new one.
• Reel disk
• Limiter pulley ass
’y
• Idler wheel ass
’y
Check reel disk and main chassis.
And replace defective parts.
Adjust reel disk height.
Rearrange the parts on main PWB.
37
YES
YES
NO
NO
NO
NO
YES
YES
Replace capstan motor.
4-ii) Unusual sound in FF/REW mode
Is reel disk height as specified ?
Thrust gap found at reel disk ?
part on main PWB ?
Turn capstan motor by hand.
Unusual sound heard ?
’s gears for
damage. Replace damaged gear
with new one.
• Reel disk
• Limiter pulley ass
’y
• Idler wheel ass
’y
Check reel disk and main chassis.
And replace defective parts.
Adjust reel disk height.
Rearrange the parts on main PWB.
37
YES
YES
NO
NO
NO
NO
YES
YES
Replace capstan motor.
4-ii) Unusual sound in FF/REW mode
Is reel disk height as specified ?
Thrust gap found at reel disk ?
part on main PWB ?
Turn capstan motor by hand.
Unusual sound heard ?
’s gears for
damage. Replace damaged gear
with new one.
• Reel disk
• Limiter pulley ass
’y
• Idler wheel ass
’y
Check reel disk and main chassis.
And replace defective parts.
Adjust reel disk height.
Rearrange the parts on main PWB.
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