JMECHA - Sony VCR Service Manual (repair manual). Page 2

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TABLE OF CONTENTS
1.
Preparations for Check, Adjustment and
Replacement of Mechanism Block
1-1.
Cassette Compartment Assy, Damper Assy ······················· 3
2.
Periodic Inspection and Maintenance
2-1.
Rotary Drum Cleaning ······················································· 4
2-2.
Tape Path System Cleaning ················································ 4
(Refer to Fig. 2-1.) ······························································ 4
2-3.
Periodic Inspection List ······················································ 5
2-4.
Service Jigs and Tools ························································ 6
2-5.
Mode Selector II Operating Procedure ······························· 8
3.
Check, Adjustment and Replacement of
Mechanical Parts
3-1.
Drum ················································································· 12
3-2.
L. Motor Holder Block Assy (Loading) and
FP-228 Flexible Wiring Board (DEW Sensor) ················· 13
3-3.
Retainer Plate Assy, LED Retainer ··································· 14
3-4.
Brake-T Block Assy, T-reel Table Assy,
Gooseneck Gear Assy ······················································· 15
3-5.
TG1 Assy, Tension Coil Spring (Tension Regulator) ······· 16
3-6.
TG1 FWD Position Adjustment ······································· 17
3-7.
FWD Back-tension Adjustment ········································ 18
3-8.
Reel Torque Check ··························································· 18
3-9.
TG3 Guide Zenith Adjustment ········································· 18
3-10. TG6 Guide Zenith Adjustment ········································· 19
3-11. LS Cam Plate Position Adjustment ·································· 19
3-12. LS Chassis Block Assy, LS Guide Retainer ····················· 20
3-13. LS Cam Plate, Tension Coil Spring (Brake-S), Brake-S,
Torsion Coil Spring (Brake Arm), Cassette Position Set-S,
Brake-S Driving Arm Assy ··············································· 21
3-14. TG7 Block Assy, Torsion Coil Spring
(TG7 Return, Pinch Return), Pinch Arm Assy ················· 22
3-15. Layout Diagram of FP-102 Flexible Wiring Board ·········· 23
3-16. TG1 Cam Slider, LS Arm, LS Roller,
Mode Gear Assy, LS Guide Roller ··································· 24
3-17. Guide Rail ········································································· 25
3-18. Gear Cover B, GL Driving Gear ······································ 26
3-19. Drum Base Block Assy, Coaster-S Block Assy,
Coaster-T Block Assy ······················································· 27
3-20. DC Motor (Capstan), Conversion Gear, Relay Gear ········ 28
3-21. Gear Cover C, Pinch Driving Arm Assy, Cam Gear B ····· 29
3-22. Gear Cover A, FP-100 Flexible Wiring Board ················· 30
3-23. Deceleration Gear, Mode Gear Assy,
FP-100 Flexible Wiring Board, Cam Gear A ··················· 31
4.
Tape Path Adjustment
4-1.
Adjustment Preparation ···················································· 32
4-2.
Tracking Adjustment ························································ 33
4-3.
TG3 Guide Adjustment ···················································· 33
4-4.
TG7 Guide Adjustment ···················································· 34
4-5.
Check upon Completion of Adjustment ··························· 34
5.
Exploded View
5-1.
Cassette Compartment Block Assy, Drum Assy Block ···· 36
5-2.
LS Chassis Block Assy ····················································· 37
5-3.
Mechanism Chassis Block Assy ······································· 38
6.
Printed Wiring Boards and
Schematic Diagrams
·············································· 39
7.
Electrical Parts List
················································· 41
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