Read Sharp VC-M331HM (serv.man4) Service Manual online
35
VC-M321HM
VC-M331HM
VC-M331HM
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.
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