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VC-A10/A10S/A500
VC-A50/A50S/A50SB
VC-A60/A75/A80S
SERVICE MANUAL
S62L3VC-A10//
VIDEO CASSETTE PLAYER
VC-A500
VC-A10/A10S
VC-A50/A50S/A50S(B)
VC-A10/A10S/A50/A50S/
VC-A500
A50S(B)/A60/A75/A80S
VC-A60
VC-A75
MODELS VC-A80S
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.
CONTENTS
Page
1. SPECIFICATIONS ................................................................................................................. 2
2. DISASSEMBLY AND REASSEMBLY ................................................................................... 3
3. FUNCTION OF MAJOR MECHANICAL PARTS ................................................................... 6
4. ADJUSTMENT, REPLACEMENT AND ASSEMBLY OF MECHANICAL UNITS .................. 9
5. ELECTRICAL ADJUSTMENT ............................................................................................. 28
6. MECHANISM OPERATION FLOWCHART AND TROUBLESHOOTING GUIDE............... 31
7. TROUBLESHOOTING ........................................................................................................ 37
8. BLOCK DIAGRAM ............................................................................................................... 45
9. SCHEMATIC DIAGRAM AND PWB FOIL PATTERN ......................................................... 55
10. REPLACEMENT PARTS LIST ............................................................................................ 68
11. EXPLODED VIEW OF MECHANICAL PARTS ................................................................... 77
12. PACKING OF THE SET ...................................................................................................... 82
SHARP CORPORATION
1
VC-A10/A10S/A500
VC-A50/A50S/A50SB
VC-A60/A75/A80S
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: D707 and D706.
Be careful not to confuse the setting direction of the parts in reference to the symbols on the PWB. Do not allow any
looseness.
1. SPECIFICATIONS
Format: VHS PAL/MESECAM/NTSC standard (except VC-A60)
VHS PAL/SECAM/MESECAM/NTSC standard (VC-A60)
Video recording system: Rotary, slant azimuth two heads helical scan system
Video signal: PAL colour or monochrome (CCiR system B/G) signals
Maximum Recording/playing time: 240 minutes max. with SHARP E-240 tape at SP mode)
480 minutes max. with SHARP T-160 tape (NTSC: EP mode)
Tape width: 12.7mm
Tape speed: 23.39/33.53 mm/s (PAL/NTSC : SP mode)
11.70/16.67 mm/s (PAL/NTSC: LP mode)
7.79/11.12 mm/s (PAL/NTSC: EP mode)
Antenna: 75 ohm unbalanced
RF converter output signal: UHF Channel E21-E69 (preset to E60)
Power requirement: AC110-240V, 50/60Hz
Power consumption: Approx. 10W (VC-A10/A10S,VC-A50/A50S/A50S(B)/A500/A60)
Approx. 12W (VC-A75)
Approx. 13W (VC-A80S)
Operating temperature: 5