DOWNLOAD Sharp VC-MH75 (serv.man8) Service Manual ↓ Size: 33 KB | Pages: 6 in PDF or view online for FREE

Model
VC-MH75 (serv.man8)
Pages
6
Size
33 KB
Type
PDF
Document
Service Manual
Brand
Device
VCR / Mechanism operation flowchart and troubleshooting guide
File
vc-mh75-sm8.pdf
Date
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Sharp VC-MH75 (serv.man8) Service Manual ▷ View online

38
VC-MH75HM
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 control running ?
Unusual sound heard with pinch
roller lever going up or down ?
Is unusual sound heard during
loading/unloading ?
Check pinch drive cam, pinch roller ass'y
and reverse guide for their actions.
Replace damaged one with new one.
Replace cassette control ass’y.
39
VC-MH75HM
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 ?
Turn capstan motor by hand.
Unusual sound heard ?
Check reel disk and main chassis.
And replace defective parts.
Adjust reel disk height.
Rearrange the parts on main PWB.
39
VC-MH75HM
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 ?
Turn capstan motor by hand.
Unusual sound heard ?
Check reel disk and main chassis.
And replace defective parts.
Adjust reel disk height.
Rearrange the parts on main PWB.
39
VC-MH75HM
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 ?
Turn capstan motor by hand.
Unusual sound heard ?
Check reel disk and main chassis.
And replace defective parts.
Adjust reel disk height.
Rearrange the parts on main PWB.
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