VC-MH815 (serv.man3). Service manual front cover — Sharp VCR Service Manual (repair manual)

Model
VC-MH815 (serv.man3)
Pages
2 Few pages! See other manuals at the bottom of the first or last page.
Size
40.54 KB
Type
PDF
Document
Service Manual
Brand
Device
VCR / Service manual front cover
File
vc-mh815-sm3.pdf
Date

View Sharp VC-MH815 (serv.man3) Service Manual online

1
VC-MH705HM/LM
VC-MH815HM/LM,MH85HM
VC-MH715HM,MH835HM
VC-MH715HM
VC-MH705HM/LM
VC-MH815HM/LM,MH85HM
2st Edition
VIDEO CASSETTE RECORDER
SERVICE MANUAL
SHARP CORPORATION
In the interests of user-safety (Required by safety regulations in some
countries) the set should be restored to its original condition and only parts
identical to those specified be used.
VC-MH705HM/LM
VC-MH715HM
VC-MH815HM/LM
VC-MH85HM
VC-MH835HM
MODELS
 CONTENTS
Page
1. SPECIFICATIONS ................................................................................................................. 3
2. DISASSEMBLY AND REASSEMBLY ................................................................................... 4
3. FUNCTION OF MAJOR MECHANICAL PARTS ................................................................... 7
4. ADJUSTMENT, REPLACEMENT AND ASSEMBLY OF MECHANICAL UNITS .................. 9
5. ELECTRICAL ADJUSTMENT ............................................................................................. 28
6. MECHANISM OPERATION FLOWCHART AND TROUBLESHOOTING GUIDE .............. 35
7. TROUBLESHOOTING ........................................................................................................ 41
8. BLOCK DIAGRAM ............................................................................................................... 56
9. SCHEMATIC DIAGRAM AND PWB FOIL PATTERN ......................................................... 6
4
10. REPLACEMENT PARTS LIST ............................................................................................ 84
11. EXPLODED VIEW OF MECHANISM PARTS ..................................................................... 93
12. PACKING OF THE SET .................................................................................................... 100
VC-MH835HM
2
VC-MH705HM/LM
VC-MH815HM/LM,MH85HM
VC-MH715HM,MH835HM
PRECAUTIONS IN PART REPLACEMENT
When servicing the unit with power on, be careful to the section marked white all over.
This is the primary power circuit which is live.
When checking the soldering side in the tape travel mode, make sure first that the tape has been loaded and then turn
over the PWB with due care to the primary power circuit.
Make readjustment, if needed after replacement of part, with the mechanism and its PWB in position in the main frame.
(1) Start and end sensors: Q701 and Q702
Insert the sensor’s projection deep into the upper hole of the holder. Referring to the PWB, fix the sensors tight
enough.
(2) Photocoupler: IC901 and IC902
Refer to the symbol on the PWB and the anode marking of the part.
(3) Cam switches A and B: S704
Adjust the notch of the part to the white marker of the symbol on the PWB. Do not allow any looseness.
(4) Take-up and supply sensors: D706 and D707.
Be careful not to confuse the setting direction of the parts in reference to the symbols on the PWB. Do not allow
any looseness.
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Download Sharp VC-MH815 (serv.man3) Service Manual (Repair Manual)

Here you can view online or download Sharp VC-MH815 (serv.man3) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sharp VC-MH815 (serv.man3) VCR. Information contained in Sharp VC-MH815 (serv.man3) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).