Zenith XBV613 - DVD/VCR Combination Service Manual page 78

SECTION 4 MECHANISM OF VCR PART(D-37)
DECK
MECHANISM PARTS LOCATIONS
• Top View......................................................4-1
• Bottom View ...............................................4-1
DISASSEMBLY AND
ASSEMBLY OF DECK MECHANISM
01.Disassembly of Drum assembly ................4-2
02.Disassembly of Plate top disassembly..... 4-4
03.Holder Assembly CST ...............................4-4
04.Disassembly of Gear Assembly
Rack F/L....................................................4-4
05.Opener Door .............................................4-4
06.Arm Assembly F/L .....................................4-4
07.Lever Assembly S/W .................................4-4
08.Motor Assembly L/D ..................................4-5
09.Gear Wheel ...............................................4-5
10.Arm Assembly Cleaner..............................4-5
11. Head F/E ...................................................4-5
12.Base Assembly A/C Head .........................4-5
13.Brake Assembly T .....................................4-6
14.Arm Assembly Tension..............................4-6
15.Reel S / Reel T..........................................4-6
16.Base Assembly P4 ....................................4-7
17.Opener Lid ................................................4-7
18.Arm Assembly Pinch .................................4-7
19.Arm T/up ...................................................4-7
20.Supporter, Capstan ...................................4-8
21.Belt Capstan/Motor Capstan .....................4-8
22.Lever F/R ..................................................4-8
23.Clutch Assembly D37 ................................4-8
24.Gear Drive/Gear Cam ...............................4-9
25.Gear Sector...............................................4-9
26.Brake Assembly Capstan ..........................4-9
27.Plate Slider................................................4-9
28.Lever Tension ............................................4-9
29.Lever Spring..............................................4-9
30. Lever Brake..............................................4-9
31.Gear Assembly P2/Gear Assembly P3 ...4-10
32.Base Assembly P2/Base Assembly P3 ...4-10
33.Base Loading ..........................................4-10
34.Base Tension ...........................................4-11
35.Arm Assembly Idler Jog ..........................4-11
CONTENTS
DECK MECHANISM ADJUSTMENT
• Fixtures and tools for service ................4-12
1. Mechanism Assembly Mode Check ........4-13
2. Previous Preparation for
Deck Adjustment .....................................4-14
3. Torque Measuring ...................................4-14
4. Guide Roller Height Adjustment..............4-15
4-1. Prior Adjustment...............................4-15
4-2. Fine Adjustment ...............................4-15
5. Audio/Control (A/C) Head Adjustment......4-16
5-1. Prior Adjustment...............................4-16
5-2. Tape Path Check between Pinch
Roller and Take-up Guide ................4-17
5-3. Fine Adjustment
(Azimuth Adjustment).......................4-17
6. X-distance Adjustment ............................4-17
7. Adjustment after Drum Assembly
(Video Heads) .........................................4-18
8. Check of Traveling Device after Deck
Assembly .................................................4-18
8-1. Audio, RF Normalization Time
(Locking Time) Check in Play
after CUE or REV ............................4-18
8-2. Check of Tape Curl and
Jam Status .......................................4-18
PROTECTION, MAINTENANCE AND
CHECK OF VIDEO FUNCTION
1. Checking Points before Repair ...............4-19
2. Essential Check and Repair....................4-20
3. Regular Check and Repair......................4-20
4. Tools for Check and Repair.....................4-20
5. Maintenance Process..............................4-20
5-1. Removal of Foreign Materials..........4-20
5-2. Grease Application...........................4-21
TROUBLESHOOTING GUIDE
1. Deck Mechanism.....................................4-23
2. Front Loading Mechanism.......................4-26
EXPLODED VIEWS
1. Front Loading Mechanism Section...........4-28
2. Moving Mechanism Section(1) .................4-29
3. Moving Mechanism Section(2) .................4-30