Read Sharp VC-MH75 (serv.man8) Service Manual online
38
VC-MH75HM
Replace loading motor block.
3. WINDING FAILURE AT VSR
4. UNUSUAL SOUND IN EACH MODE
Is Playback
function normal ?
function normal ?
Master cam
shifting to VSR
position ?
shifting to VSR
position ?
Go to 2. REC/
PLAY FAILURE
routine.
PLAY FAILURE
routine.
Replace idler
gear ass’y.
gear ass’y.
Replace limiter
pulley ass’y.
pulley ass’y.
Replace reel
sensor.
sensor.
Go to 2. REC/
PLAY FAILURE
routine.
PLAY FAILURE
routine.
Are idler wheel
ass’y and supply
reel disk in mesh ?
ass’y and supply
reel disk in mesh ?
Is supply reel disk
winding torque
normal ?
winding torque
normal ?
Is pulse outputted
from reel sensor ?
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
insertion and ejection mode
Is unusal sound heard during
cassette control running ?
cassette control running ?
Unusual sound heard with pinch
roller lever going up or down ?
roller lever going up or down ?
Is unusual sound heard during
loading/unloading ?
loading/unloading ?
Check pinch drive cam, pinch roller ass'y
and reverse guide for their actions.
Replace damaged one with new one.
and reverse guide for their actions.
Replace damaged one with new one.
Replace cassette control ass’y.
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