Sharp VC-H992U, Service Manual

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VC-H992U
VC-H992U(A)
SY8B1VC-H992U
SERVICE MANUAL
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
SHARP CORPORATION
CONTENTS
Page
1. GENERAL INFORMATION .............................. 4
1-1 FEATURES ................................................. 4
1-2 SPECIFICATIONS ..................................... 4
1-3 LOCATION OF MAJOR COMPONENTS
AND CONTROL ......................................... 5
2. DISASSEMBLY AND REASSEMBLY .............. 6
2-1 DISASSEMBLY OF MAJOR BLOCKS ....... 6
2-2 DISASSEMBLING THE MECHANISM/
MAIN PWB ASSEMBLY ............................. 7
2-3 CARES WHEN REASSEMBLING .............. 8
3. FUNCTION OF MAJOR MECHANICAL
PARTS .............................................................. 9
4. ADJUSTMENT, REPLACEMENT AND
ASSEMBLY OF MECHANICAL UNITS .......... 11
4-1 MECHANISM CONFIRMATION
ADJUSTMENT JIG .................................. 11
5. ELECTRICAL ADJUSTMENT ........................ 30
5-1 ADJUSTMENT OF HEAD SWITCHING
POINT ....................................................... 31
Page
5-2 ADJUSTMENT OF FV (False Vertical Sync)
OF STILL PICTURE ................................. 31
5-3 CHECKING OF OFF TRACK ................... 31
5-4 ADJUSTMENT OF SIF-INPUT LEVEL .... 32
5-5 ADJUSTMENT OF STEREO
SEPARATION ........................................... 32
6. MECHANISM OPERATION FLOWCHART
AND TROUBLESHOOTING GUIDE .............. 33
7. TROUBLESHOOTING ................................... 39
8. BLOCK DIAGRAM .......................................... 50
9. SCHEMATIC DIAGRAM AND PWB FOIL
PATTERN ....................................................... 56
10.PARTS LIST .................................................... 69
11.EXPLODED VIEW OF MECHANICAL
PARTS ............................................................ 77
12.PACKING OF THE SET ................................. 81
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.
VIDEO CASSETTE RECORDER
VC-H992U
VC-H992U(A)
VC-H992U/H992U(A)...Models for U.S.A.
SERVICE MANUAL
MODELS VC-H992U/H992U(A)
VIDEO CASSETTE RECORDER
MODELS
VC-H992U
VC-H992U(A)