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DV MECHANICAL ADJUSTMENT MANUAL VI
MECHANISM DECK
J MECHANISM
Please use this manual with the service manual of the respective models.
Ver 1.0 2000. 3
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TABLE OF CONTENTS
1.
Preparations for Check, Adjustment and
Replacement of Mechanism Block
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
(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
Mechanical Parts
3-1.
Drum ················································································· 12
3-2.
L. Motor Holder Block Assy (Loading) and
FP-228 Flexible Wiring Board (DEW Sensor) ················· 13
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
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,
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
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,
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,
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,
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
Schematic Diagrams
·············································· 39
7.
Electrical Parts List
················································· 41
— 3 —
1. Removal Procedure
1)
Set the [EJ] mode.
2)
When the cassette compartment moves up in the direction of
the arrow B, establish the [ULE] mode.
the arrow B, establish the [ULE] mode.
3
Release the two claws 1 and dowel of the damper assy and
remove the damper assy.
remove the damper assy.
4)
Remove the shaft of the holder arm from the damper arm.
5)
Remove the two screws (M1.4
×
2) 2.
6)
Lift up the LS frame in the direction of the arrow C.
7)
Lift up the cassette compartment block assy in the direction of
the arrow A. While pushing the holder arm in the direction of
the inside arrow E, remove the cassette compartment block
assy.
the arrow A. While pushing the holder arm in the direction of
the inside arrow E, remove the cassette compartment block
assy.
•
Refer to the “DISASSEMBLY” section of the SERVICE MANUAL of the respective models for details of removing cabinets and
printed wiring boards.
printed wiring boards.
•
When making any adjustment to a mechanism or replacing mechanical parts, be sure to use the Mode Selector II and select the appropriate
status of the mechanical deck such that the mechanical status is suitable for the desired work. Refer to section “2-5. Mode Selector II”
for details on how to enter the mode shown in a rectangle [ ] mode in subsequent paragraphs of this manual.
status of the mechanical deck such that the mechanical status is suitable for the desired work. Refer to section “2-5. Mode Selector II”
for details on how to enter the mode shown in a rectangle [ ] mode in subsequent paragraphs of this manual.
1-1. Cassette Compartment Assy, Damper Assy
1. Preparations for Check, Adjustment and Replacement of Mechanism Block
2. Attachment procedure
1)
Set the [ULE] mode.
2)
Attach the holder arm of the cassette compartment block assy
to the cassette compartment slide shaft on both sides of the LS
chassis block assy from inside.
to the cassette compartment slide shaft on both sides of the LS
chassis block assy from inside.
3)
Install the LS frame pivot into the groove D of the LS chassis.
Drop down the LS frame in the direction opposite to C.
Drop down the LS frame in the direction opposite to C.
4)
Hook the LS frame T-side bent portion on the LS chassis notch
F
F
.
5)
Attach the LS frame with two screws (M1.4
×
2) 2.
Tightening torque: 0.054 ± 0.01 N•m (0.6 kg•cm).
6)
While inserting the damper shaft of the cassette compartment
block assy into slot of the damper arm, engage the two claws
1
block assy into slot of the damper arm, engage the two claws
1
with the notch of the LS chassis block assy, and fix the
dowel to the corresponding hole of the LS chassis block assy
respectively.
respectively.
Note:
Check that the two claws 1 and dowel do not come off.
Fig. 1-1
Removal method of
damper assy
damper assy
1
Claw
1
Claw
Damper assy
Holder arm
Damper shaft
Holder arm
While pressing
toward the inside
toward the inside
Cassette compartment
slide shaft
slide shaft
Cassette compartment
slide shaft
slide shaft
D
Groove
Holder arm
LS chassis block assy
LS frame pivots
(two pivots in the right and left)
(two pivots in the right and left)
LS chassis block assy
LS chassis block assy
Cassette compartment
block assy
block assy
D
Groove
F
Notch
While pressing
toward the inside
toward the inside
Cassette compartment
block assy
block assy
LS frame
2
Two screws (M1.4
×
2)
Dowel
Slot of damper arm
A
C
B
E
E
*
Be careful not to
deform here.
*
Be careful not to
deform here.
LS chassis block assy
LS frame
— 4 —
• Be sure to perform the following maintenance and inspection so
that the machine delivers its full performance and functions, and
to protect the machine and tape. Also, perform the following
maintenance items after completing the repair work, regardless
of the number of hours the machine has been operated by the
user.
to protect the machine and tape. Also, perform the following
maintenance items after completing the repair work, regardless
of the number of hours the machine has been operated by the
user.
2-1. Rotary Drum Cleaning
1)
Press a wiping cloth (Ref. No. J-2) moistened with cleaning
fluid (Ref. No. J-1) lightly against the rotary drum. Rotate the
upper drum with a super-fine applicator slowly in the counter-
clockwise direction to clean the rotary drum.
fluid (Ref. No. J-1) lightly against the rotary drum. Rotate the
upper drum with a super-fine applicator slowly in the counter-
clockwise direction to clean the rotary drum.
Caution:
Never rotate the rotary drum by turning on the main power of
the motor or rotate it in the clockwise direction. Never move the
cloth vertically against the head tip, as this will surely damage
the video head; the video head must not be cleaned by any other
different methods.
the motor or rotate it in the clockwise direction. Never move the
cloth vertically against the head tip, as this will surely damage
the video head; the video head must not be cleaned by any other
different methods.
2. Periodic Inspection and Maintenance
2-2. Tape Path System Cleaning
(Refer to Fig. 2-1.)
1)
Set the EJECT state. Clean the tape running path (TG-1, -2, -
3, -4, -5, -6 and -7, pinch roller and capstan shaft) and lower
drum with a super-fine applicator (Ref. J-3) moistened with
cleaning fluid.
3, -4, -5, -6 and -7, pinch roller and capstan shaft) and lower
drum with a super-fine applicator (Ref. J-3) moistened with
cleaning fluid.
Note 1:
Be careful not to allow oil or grease of the various link mechanisms
to get on the super-fine applicator (Ref. J-3).
to get on the super-fine applicator (Ref. J-3).
Note 2:
Once the super-fine applicator has been moistened with alcohol,
do not use it to clean other mechanical parts such as the tape guide.
However, the pinch roller is cleaned with alcohol.
do not use it to clean other mechanical parts such as the tape guide.
However, the pinch roller is cleaned with alcohol.
Note 3:
When cleaning the capstan shaft, be carefull not to move the oil
seal. If the oil seal is moved, oil will leak.
seal. If the oil seal is moved, oil will leak.
Fig. 2-1
Drum
TG2
Capstan shaft
TG6
TG7
TG5
TG4
Pinch roller
TG3
TG1
Capstan shaft cleaning
Oil seal