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8mm Video MECHANICAL ADJUSTMENT MANUAL IX
Ver 1.0 2000. 12
M2000 MECHANISM
Please use this manual with the service manual of the respective models.
MECHANISM DECK
TABLE OF CONTENTS
1. Preparations for Check, Adjustment and
Replacement of Mechanism Block
1-1. Service Jigs and Tools ························································ 3
1-2. Mode Selector II Operating Procedure ······························· 5
2. Periodic Inspection and Maintenance
2-1. Rotary Drum Cleaning ······················································· 9
2-2. Tape Path System Cleaning ················································ 9
2-3. Periodic Inspection List ···················································· 10
2-4. Appling Oil and Grease ···················································· 10
3. Before Replacement, Check or Adjustment
3-1. Phase Adjustment ····························································· 11
3-2. Cassette compartment assembly ······································· 12
4. Check, Adjustment and Replacement
4-1. Drum Assembly ································································ 14
4-2. HCL Arm Assembly, Loading Motor Assembly ·············· 15
4-3. Drum Base Assembly, Drum Earth ·································· 16
4-4. Guide Rail T2, Capstan Motor ········································· 17
4-5. Blind Plate, Lock Guide ··················································· 18
4-6. Reel Table (T) Assembly, T Soft Assembly ····················· 19
4-7. S Ratchet RE Plate, Cassette Guide S ······························ 20
4-8. R Drive Gear Assembly, LS Cam Plate ···························· 21
4-9. LS Cam Plate Position Adjustment ·································· 22
4-10. LS Chassis Block Assembly ············································· 23
4-11. TG7 Arm Block Assembly, Pinch Arm Assembly ··········· 24
4-12. Guide Base (T) Block Assembly,
Guide Base (S) Block Assembly ······································ 25
4-13. TG1 Arm, Reel Table (S) Assembly, Push Switch (3Key) · 26
4-14. Hall Element (H001, H002 (T/S Reel)),
Photo Transistor (Q001, Q002 (Tape Top/Tape End)),
LED (D001 (Tape LED)) ·················································· 27
4-15. LS Guide Roller, Guide Lock Plate (T),
Pinch Pusher Assembly, Eject Arm ···································· 28
4-16. Rotary Switch, Cam Relay Gear,
Change Gear Assembly, Timing Belt ······························· 29
4-17. Guide Gear Assembly, Guide Gear T Assembly,
Cam Relay Gear 1, Guide Lock Plate (S) ························ 30
4-18. LD Gear 4, Cam Gear 1, HC Drive Arm ·························· 31
4-19. M Slide Plate Assembly, LS Arm Assembly,
Cam Gear 2, GL Arm Assembly ······································ 32
5. Adjustment
5-1. Check and Adjustment of TG1 Back-tension Position ····· 33
5-2. Check and Adjustment of FWD/RVS Back-tension ········· 34
5-3. Capstan Motor Azimuth Position Adjustment ·················· 35
5-4. Tape Path Adjustment ······················································· 36
6. Exploded Views
6-1. Cassette Compartment Assy, Drum Assy ························· 40
6-2. LS Chassis Block Assembly ············································· 41
6-3. Mechanical Chassis Block Assembly-1 ··························· 42
6-4. Mechanical Chassis Block Assembly-2 ··························· 43
7. Printed Wiring Boards and
Schematic Diagrams .............................................. 44
--2--
1. Preparations for Check, Adjustment and Replacement of Mechanism Block
Before Replacement, Check or Adjustment
· Refer to the "DISASSEMBLY" section of the SERVICE MANUAL of the respective models for details of removing cabinets and printed
wiring boards.
· When checking a mechanism ir making any adjustment to the 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
"1-2. Mode Selector II Operating Procedure" for details on how to enter the mode shown in a rectangle [ ] mode in the sequent sections
of this manual.
* Assemble and adjust the parts in the [USE] mode if any mode is not specified in this manual.
1-1. Service Jigs and Tools
Ref. No. Name Part code Jig inscription Used for
J-1 Cleaning fluid Y-2031-001-0
J-2 Wiping cloth 7-741-900-53
Super-fine applicator
J-3
(made by Nippon Applicator (P752D))
J-4 Head eraser commercially available Tape path
J-5 Mirror (small oval type) J-6080-840-A GD-2038 Tape path
NTSC : WR5-1NP 8-967-995-02
J-6 Alignment tape For tracking adjustment
PAL : WR5-1CP 8-967-995-07
J-7 FWD/RVS take-up torque cassette J-6080-824-A GD-2086
J-8 Tape path screwdriver J-6082-026-A For tape guide adjustment
J-9 Adjustment remote commander (RM-95 upgrated) J-6082-053-B Tape path (for setting the path mode)(Note)
J-10 MD process table J-6082-166-A
J-11 Floil grease 7-662-001-39
J-12 Torque screwdriver J-9049-330-A
J-13 Mode Selector II J-6082-282-B
J-14 Mode Selector II conversion board J-6082-516-A
J-15 Mode Selector II ROM, Ver 1.6 J-6082-314-E
For capstan azimuth adjustment,
J-16 Thickness gauge 9-911-053-00
LS cam plate position adjustment
Other required equipment: Note: If the micro processor IC in the adjustment remote commander is
· Oscilloscope not the new micro processor (UPD7503G-C56-12), the pages cannot
· Analog tester (20 k) be switched. In this case, replace with the new micro processor (8-
759-148-35).
--3--
J-1 J-2 J-3 J-4 J-5
J-6 J-7 J-8 J-9 J-10
J-11 J-12 J-13 J-14 J-15
J-16
Fig. 1-1.
--4--
1-2. Mode Selector II Operating Procedure
1-2-1. Introduction
The Mode Selector II is a mechanism drive tool that assists LCD display screen
maintenance work of the various mechanism decks. It has the
Selector button
following functions.
Mode Selector II
1. Manual Test (Ref. No. J-13)
In this mode, the motor of the mechanism deck is powered only
during the period while the switch is turned on manually. Using the
Manual Test, the operator can freely control the motor of the
mechanism deck.
R
V
S
FF
2. Step Test
S
E
L
In this mode, the motor of the mechanism deck is kept turned on
until the mechanical status is changed from the present mechanical
status that is obtained from the sensor information. The Step Test is
used to confirm a series of movements of the mechanism deck.
3. Auto Test External battery is
The Mode Selector II stores the status transition table in its memory connected here as
as data indicating the respective modes of the mechanism deck. a power supply
The status transition table can be used to confirm whether a
mechanism deck is operating normally or has abnormality from a
Relay board Alligator clip
series of movements of a mechanism deck. If an abnormal status
transition is detected during operation, the "NG" indication appears (already connected)
and the mechanism stops moving.
Fig. 1-2.
Mode Selector II (J-6082-282-B) connection diagram
Alligator clip
(not used in M2000 mechanism)
M2000 mechanism
Mode selector l l
Connector (black) 6-pin
(not used in M2000 mechanism)
Relay board
Mode selector l l Battery such as NP-55, NP-77
conversion board (M) (power supply)
(Ref. No. J-14) Connector (white) 6-pin
Fig. 1-3.
--5--
1-2-2. Operation
1. Operation Flow Chart
Note: The ROM in the Mode Selector II supports the M2000 mechanism. SEL
POWER ON
MECHA SELECT RVS, FF
SEL
From any status
MODE SELECT RVS, FF
Press RVS and FF for
2 sec. simultaneously
SEL
Main power is
turned off
MANUAL TEST STEP TEST AUTO TEST
SEL RVS FF SEL RVS FF SEL RVS, FF
2. Mode Selector II Power On
Turn on the main power of the Mode Selector II as follows.
Press the SEL button.
RVS FF SEL
3. Mode Selector II Power Off
Turn off the main power of the Mode Selector II as follows.
Press the RVS and FF buttons at the same time for 2 seconds or
longer while the power is on.
RVS FF SEL
--6--
4. Mecha Select
When the main power is turned on, the MECHA SELECT display
appears on the LCD screen. Select the desired mechanism name
using the RVS and FF buttons. Selection is complete when the SEL MECHA SELECT
button is pressed. (Fig. A shows the B mechanism.)
B
Pressing the RVS or FF button
changes the mechanism name.
Fig. a
5. Test Type Select
Using the RVS and FF buttons, select a desired test type from the
three types of "MANUAL", "STEP" and "AUTO". Selection is
complete when the SEL button is pressed. TEST TYPE SELECT
MANUAL
Pressing the RVS or FF button cycles
among MANUAL, STEP, AUTO in this order.
Fig. b
6. Manual Test
In this test, the motor of the mechanism deck is turned on only Mechanism name
during the period while the RVS or FF button is pressed manually.
Present mode
Motor ON/OFF
B MANUAL OFF
STATUS
Present status of sensor appears. (example: EJ)
Fig. c
7. Step Test
In this test, the direction of motor movement is determined by the
RVS and FF buttons. The motor of the mechanism deck is kept Mechanism name
turned on until the mechanical status is changed from the present Present mode
Motor ON/OFF
mechanical status that is obtained from the sensor information.
B STEP OFF
STATUS
Present status of sensor appears. (example: EJ)
Fig. d
8. Auto Test
In this test, the mechanism deck is tested as to whether it performs
a series of movements correctly in accordance with the operation Mechanism name
Present mode
sequence that is memorized earlier for each type of deck, by checking Motor ON/OFF
the output signals from sensors with the stored memory. Turning B AUTO OFF
on the RVS or FF button performs the same operation.
STATUS
Present status of sensor appears. (example: EJ)
Fig. e
--7--
1-2-3. Mechanism Status (Position) Transition Table Using Mode Selector II
After selecting a mechanism deck, select either the MANUAL or MD name
STEP test (not AUTO) using the Mode Selector II. The desired M2000 Mechanism
Code
mechanism status (position) can be specified by pressing the RVS
A B C
or FF button. (The selected status appears on STATUS.)
EJyUSEyLOADySTOPyTURNyRPyREW 1 0 0 1 EJ
1 1 0 2 USE
0 1 0 3 LOAD
0 1 1 4 STOP
0 0 1 5 TURN
0 0 0 6 RP
1 0 1 7 REW
[ 0 is common and open. ]
1
is common and short.
1-2-4. Battery Alarm Indication
When the level of the battery used to supply power to this system
decreases, this display appears asynchronously. When this happens,
all operations are disabled and the battery must be replaced.
BATT DOWN
CHANGE PLEASE
Fig. f
--8--
2. Periodic Inspection and Maintenance
· 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.
2-1. Rotary Drum Cleaning 2-2. Tape Path System Cleaning
(Refer to Fig. 2-1.)
1) Press a wiping cloth (Ref. No. J-2) moistened with cleaning
fluid (Ref. No. J-1) lightly against the rotary drum. Rotate the 1) Set the EJECT state. Clean the tape running path (TG1, 2, 3,
upper drum with a super-fine applicator slowly in the counter- 4, 5, 6 and 7, pinch roller and capstan shaft) and lower drum
clockwise direction to clean the rotary drum. with a super-fine applicator (Ref. No. J-3) moistened with
cleaning fluid.
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 Note 1: Be careful not to allow oil or grease of the various link mechanisms
cloth vertically against the head tip, as this will surely damage to get on the super-fine applicator (Ref. No. J-3).
the video head; the video head must not be cleaned by any other Note 2: Once the super-fine applicator has been moistened with alcohol,
different methods. 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.
TG5 TG4
T-reel S-reel
TG6
TG3
Pinch roller
Drum
TG1
TG7
TG2
Capstan shaft
Loading motor
Capstan shaft cleaning
Oil seal
Fig. 2-1
--9--
2-3. Periodic Inspection List
Operating hours (H)
Maintenance and inspection item Remarks
500 1000 1500 2000 2500 3000 3500 4000 4500 5000
Tape running surface cleaning a a a a a a a a a a Be careful not to attach oil
Rotary drum cleaning and
a a a a a a a a a a Be careful not to attach oil
degaussing
Timing belt -- 6 -- 6 -- 6 -- 6 -- 6
mechanism
Never attach oil to the
Drive
Capstan shaft -- 6 -- 6 -- 6 -- 6 -- 6 tape running path during
periodic inspection.
Loading motor -- 6 -- 6 -- 6 -- 6 -- 6
Abnormal sound 6 6 6 6 6 6 6 6 6 6
Performance
6 6 6 6 6
check
Back-tension measurement -- -- -- -- --
Brake system -- 6 -- 6 -- 6 -- 6 -- 6
FWD/RVS torque measurement -- 6 -- 6 -- 6 -- 6 -- 6
a: Cleaning, 6: Check
Note: When the machine is overhauled, replace the parts referring to the
above list.
2-4. Appling Oil and Grease
When replacing or assembling the parts, use oil and grease while
referring to the following.
On Oil
· Be sure to use the specified grease only. (If oil of different viscosity
is used, it can cause various troubles.) Metal rod of
1 mm diameter
Oil: Part No. 7-661-018-18 1 mm diameter
(Mitsubishi diamond oil hydro fluid NT-68)
· The oil used for bearings must not contain any dust or other
materials, otherwise excessive abrasion and seizure of the bearing
could occur.
· A drop of oil means the amount of oil as shown in the illustration Fill the oil of
in the right, which is the amount that is attracted to the top of a about 2 mm depth
rod of 2 mm diameter. Oil
On Grease Fig. 2-2
· Be sure to use the specified grease only. (If oil of different viscosity
is used, it can cause various troubles.)
Floil grease: Part No. 7-662-001-39
· Be sure to use grease into which dust is not mixed.
· The amount of grease is 1 to 1.5 mm diameter in length.
-- 10 --
3. Before Replacement, Check or Adjustment
3-1. Phase Adjustment
The phase adjustment of this mechanism block has been adjusted
by using the in-phase markings shown in the following figure.
When replacing or assembling the parts, check the phase.
Cam gear (2) LS arm assembly
Cam relay gear (2)
Rotary switch Cam relay gear (1)
Front side
GL arm assembly
M slide plate
Drum side assembly
Guide gear Guide gear Cam gear (1)
(S) assembly (T) assembly
Hole of mechanism chassis HC drive arm
Fig. 3-1.
-- 11 --
3-2. Cassette compartment assembly
1. Removal procedure 2. Attachment procedure
1) Set the [EJ] mode to move up the cassette compartment 1) Set the [USE] mode.
assembly 0. 2) Insert the cassette holder (S) 8 of the cassette compartment
2) Remove the capstan flexible board and flexible wiring board assembly 0 and cassette holder (T) 9 into the grooves on
(FP-300) 1 from the holders X, Y and Z in the directions both sides of the LS chassis block assembly.
of the arrows A, B and C. 3) While moving down the cassette compartment assembly 0,
3) Push the damper assembly 3 in the directions of the arrows lift up the face plate in the direction of the arrow F and keep
D and E and remove it from the notch of the LS chassis block this status. Then, insert the face plate in the grooves 6 and 7
assembly. on the LS chassis block assembly.
4) Remove the two screws (camera pan2 main M1.4 × 1.6) 4. 4) Tighten the two screws (camera pan2 main M1.4×1.6) 4.
5) With the cassette compartment assembly 0 half opened, move Tightening torque: 0.078 ± 0.01 N·m (0.8 ± 0.1 kgf·cm)
the face plate in the direction of the arrow F and remove it 5) Move the damper arm of the damper assembly 3 to the 4
from the grooves 6 and 7 on the LS chassis block assembly. o'clock position and insert the damper assembly into the hole
6) Remove the cassette holder (S) 8 and cassette holder (T) 9 on the LS chassis block assembly and the dowel of the cassette
of the cassette compartment assembly 0 from the groove on holder (T) 9.
the LS chassis block assembly. 6) Align the damper assembly 3 with the notch of the LS chassis
block assembly and rotate the damper assembly 3 in the
opposite direction to the arrow E to fix it.
-- 12 --
E
Damper
assembly
Cassette holder (T)
Move the damper arm
D to the 4 o'clock position.
Push Insert into these holes
and attach.
2 Remove the damper assembly in the direction
of the arrow E.
Damper arm
3 Damper assembly
1 FP-300 flexible board,
Capstan flexible board
Remove the flexible board in the
direction of the arrow A B C.
FP-300 flexible board
B
C
Z X
Y
Capstan flexible board A
* Be careful not to While pressing 0 Cassette compartment
deform here. toward the inside assembly
4 Two screws
(camera pan 2 main M1.4 × 1.6)
9 7
Cassette holder (T) Face plate
6 F
8
Cassette holder (S)
5 Remove the cassette
compartment assembly
* Be careful not to in the direction of the
While pressing arrow F.
toward the inside deform here.
When attaching it, coat the hatched portion with grease.
Fig. 3-2.
-- 13 --
4. Check, Adjustment and Replacement
Note: For removal procedure of the cabinets, printed wiring boards and other parts, refer to "DISASSEMBLY" of the Service Manual of the respective
models.
4-1. Drum Assembly
1. Removal procedure 2. Attachment procedure
1) Remove the three screws (drum fitting M1.4 × 2.5) 1 fixing 1) Align the two reference holes A and B on the rear of the drum
the drum and remove the drum. with the reference pins A and B of the drum base assembly.
2) Attach the drum with the three screws (drum fitting M1.4 ×
2.5) 1 in the order of A, B and C.
Tightening torque: 0.078 ± 0.01 N·m (0.8 ± 0.1 kgf·cm)
3) Clean the drum while referring to 2-1.
4) Adjust the tape path. (Refer to "4. Tape Path Adjustment".)
Note: Do not touch the outside circumference.
Drum (rear view)
Hole (reference hole B)
Drum
Hole (reference hole A)
Reference pin A
Reference pin B
B
Drum base assembly
1 Three screws C
(drum fitting M1.4 × 2.5)
A
Fig. 4-1.
-- 14 --
4-2. HCL Arm Assembly, Loading Motor Assembly
1. Removal procedure 2. Attachment procedure
1) Hook the HC arm spring in the direction of the arrow B. 1) Coat the worm shaft and gear of the loading motor assembly
2) Remove the HCL arm assembly 2 from the loading motor 4 with grease.
assembly 4. 2) Insert the three claws of the loading motor assembly 4 into
3) Remove the screw (M1.4 × 2.5) 3. the groove on the mechanism chassis assembly.
4) Remove the three claws of the loading motor assembly 4 from 3) Attach the screw (M1.4 × 2.5) 3.
the mechanism chassis assembly in the direction of the arrow Tightening torque: 0.078 ± 0.01 N·m (0.8 ± 0.1 kgf·cm)
A. 4) Check the position of the HCL arm assembly 2 and the HC
drive arm. Then attach the HCL arm assembly 2 to the loading
motor assembly 4.
5) Hook the HC arm spring 1 on the notch of the loading motor
assembly 4.
6) Clean the drum assembly. (Refer to section 2-1.)
Hook the HC arm spring on the notch 2 HCL arm
of the loading motor assembly. assembly
Drive pin
Remove the loading motor
assembly in the direction
3 Screw of the arrow A.
(M1.4 × 2.5)
A polarity exists.
The marked side has
a red line. A
4 Loading motor
B assembly
Three
1 Pull and hook the HC arm spring in claws
the direction of the arrow B.
Mechanical chassis assembly
When attaching it, coat the hatched
portion with grease.
Loading motor
assembly
(rear view)
Cover
sheet
Drive pin
HC drive arm Loading motor
assembly
Fig. 4-2.
-- 15 --
4-3. Drum Base Assembly, Drum Earth
1. Removal procedure 2. Attachment procedure
1) Remove the capstan flexible board and flexible wiring board 1) Attach the ground spacer 8 and drum ground 7 with the screw
(FP-300) from the holders X, Y and Z in the direction of the (screw assy PW M1.7 × 2.6) 6.
arrow. Tightening torque: 0.078 ± 0.01 N·m (0.8 ± 0.1 kgf·cm)
2) Remove the drum assembly. (Refer to section 4-1.) 2) Align the drum base assembly 5 with the reference pin and
3) Remove the screw (M1.4 × 2.5) 2. tighten the three screws (M1.4 × 2.5) 4 in the order of G, H
4) Remove the claw D of the guide rail T2 3 from the hole E and I.
of the drum base assembly in the direction of the arrow F. 3) Insert the claw D of the guide rail T23 into the hole E of the
5) Remove the three screws (M1.4 × 2.5) 4. drum base assembly 5 and tighten the screw (M1.4 × 2.5) 2.
6) Remove the drum base assembly 5 in the direction of the arrow. Tightening torque: 0.078 ± 0.01 N·m (0.8 kgf·cm)
7) Remove the screw (screw assy PW M1.7 × 2.6) 6. 4) Remove the drum assembly. (Refer to 4-1.)
8) Remove the drum earth 7 and earth spacer 8. 5) Attach the flexible wiring board (FP-300) 1 and capstan
flexible board to the drum base assembly.
6) Clean the tape running path. (Refer to 2-2.)
G
2 Screw
F hole E (M1.4 × 2.5)
Guide rail 4 Three screws
(T2) (M1.4 × 2.5)
H
I 5 Drum base
Remove the guide rail assembly
(T2) in the direction
of the arrow F. Claw D
3 Guide
Drum base assembly rail (T2)
Two dowels Claw D
Remove the flexible board in the
direction of the arrow A B C.
FP-300 flexible board 6 Screw
(screw assy PW
B
C M1.7 × 2.6)
7 Drum
ground
Z X 8 Ground
Y spacer
Capstan flexible board A
1 FP-300 flexible board,
Capstan flexible board
Fig. 4-3.
-- 16 --
4-4. Guide Rail T2, Capstan Motor
1. Removal procedure 2. Attachment procedure
1) Remove the capstan flexible board and flexible wiring board 1) Hook the timing belt 0 on the gear of the capstan motor 8,
(FP-300) 1 from the holders X, Y and Z in the directions attach the capstan motor while aligning it with the reference
of the arrows A, B and C. boss of the mechanism chassis assembly.
2) Remove the screw (M1.4 × 2.5) 2. 2) Attach the screw (SANG camera pan2 M1.4 × 4.5) 7 and
3) Remove the claw of the guide rail T2 3 from the hole on the capstan spring 9. (temporally attachment)
drum base assembly in the direction of the arrow D. 3) Attach the two screws (camera pan2 M1.4 × 1.6) 6.
4) Remove the six solderings 4. Tightening torque: 0.078 ± 0.01 N·m (0.8 ± 0.1 kgf·cm)
5) Remove the FP-228 flexible wiring board (2P) (DEW sensor) 4) Attach the six solderings 4 to the FP-228 flexible wiring board
5. 5 (2P) (DEW sensor) and the FP-299 flexible wiring board
6) Remove the two screws (camera pan2 main M1.4 × 1.6) 6 (4P).
and the screw (SANG camera pan2 main M1.4 × 4.5) 7. 5) Insert the guide rail T2 3 into the hole on the drum base
7) Remove the capstan motor 8. assembly and tighten the screw (M1.4 × 2.5) 2.
8) Remove the capstan spring 9 (be careful not to drop the capstan Tightening torque: 0.078 ± 0.01 N·m (0.8 ± 0.1 kgf·cm)
spring) and timing belt 0. 6) Attach the capstan flexible board and the flexible wiring board
(FP-300) 1 to the holders X, Y and Z.
7) Adjust the height of the capstan motor using the thickness gauge
(Ref. No. J-16). (Refer to 5-3.)
Note: Be careful not to touch the center of the capstan motor 0 shaft and
the FP-228 flexible wiring board (DEW sensor) with soldering iron
or other tool.
Attachment position of 2 Screw
FP-228 flexible board 3 Guide rail (T2)
6 Two screws (M1.4 × 2.5)
(camera pan 2 main
M1.4 × 1.6)
Remove the Guide rail (T2)
7 Screw in the direction of the
(SANG camera pan arrow D.
2 main M1.4 × 4.5) D
Approx.0.5mm
5 FP-228 flexible
board (2P)
(DEW sensor)
4 Remove the
8 Capstan motor six solderings Guide rail
(T2) Drum base
assembly
FP-299 flexible
board (4P)
9 Capstan spring
1 FP-300 flexible board,
Capstan flexible board
Remove the flexible board in the
direction of the arrow A B C.
FP-300 flexible board
B
C
Z X
Y 0 Timing belt
Capstan flexible board A
Note: Any foreign materials must not be attached
to the capstan motor.
Fig. 4-4.
-- 17 --
4-5. Blind Plate, Lock Guide
1. Removal procedure 2. Attachment procedure
1) Remove the diode D001 (tape LED) 1 from the notch of the 1) Attach the reel release lever 5 to the blind plate 4.
plate 4. 2) Hang the notches G, D, E and F of the blind plate 4 on
2) Remove the flexible wiring board 2 (FP-301) from T-shaped the hook.
portion of the blind plate 4 in the direction of the arrow A. 3) Attach the screw (camera pan2 main M1.4 × 1.6) 3.
3) Remove the screw (camera pan2 main M1.4 × 1.6) 3. Tightening torque: 0.078 ± 0.01 N·m (0.8 ± 0.1 kgf·cm)
4) Release the hook on the notches G, D, E and F of the blind 4) Attach the flexible wiring board (FP-301) 2 to the T-shaped
plate 4 in the direction of the arrow B. portion of the blind plate 4.
5) Remove the reel release lever 5 in the direction of the arrow 5) Attach the diode (tape LED) 1 to the notch of the blind plate
C. 4.
3 Screw
(camera pan 2 main M1.4 × 1.6) C 5 Remove the reel release
lever in the direction of
4 Remove the blind plate in the the arrow C.
direction of the arrow B. Claw
Notch D
Notch G
Notch E
A
B
Notch F
2 Remove the FP-301 flexible
board in the direction of
the arrow A.
1 D001
Diode (tape LED)
Fig. 4-5.
-- 18 --
4-6. Reel Table (T) Assembly, T Soft Assembly
1. Removal procedure 2. Attachment procedure
1) Remove the blind plate. (Refer to 4-5.) 1) Insert the T ratchet arm 4 into the groove on the LS chassis
2) Open the claw of the reel table T assembly 1 in the directions block assembly to attach it.
of the arrows B and C and remove the reel table T assembly. 2) Attach the T ratchet spring 3 to the notch of the T ratchet arm
3) Remove the T soft assembly 2 in the direction of the arrow 4 and LS chassis block assembly.
A. 3) Insert the T soft assembly into the groove on the LS chassis
4) Remove the T ratchet spring 3. block assembly.
5) Remove the T ratchet arm 4 in the direction of the arrow D. 4) Check the location of the reel table T assembly and attach the
LS chassis block assembly to the shaft.
5) Attach the blind plate. (Refer to 4-5.)
Check the location of the reel
1 Reel table (T) table (T) assembly.
assembly The reel table (T)
assembly is at a
Open the claw of the reel table T
slant.
in the directions of the arrows
B and C.
B
A
C
4 Remove the T ratchet arm in
the direction of the arrow D.
2 Remove the T soft assembly in the
direction of the arrow A.
D
3 T ratchet
spring
When attaching it, coat the hatched
portion with grease.
Fig. 4-6.
-- 19 --
4-7. S Ratchet RE Plate, Cassette Guide S
1. Removal procedure 2. Attachment procedure
1) Remove the blind plate. (Refer to 4-5.) 1) Attach the cassette guide S 6 to the notch of the LS chassis
2) Remove the RE return plate spring 1. block assembly with the screw (camera tapping M1.4 × 2).
3) Remove the S ratchet spring 2. 2) Attach the S ratchet RE plate 4 to the shaft of the LS chassis
4) Remove the S ratchet arm 3 in the direction of the arrow A. block assembly.
Note: Do not reuse the S ratchet arm. 3) Attach the S ratchet arm 3 to the shaft of the LS chassis block
5) Remove the S ratchet RE plate. assembly. At this time, the dowel of the S ratchet RE plate 4
6) Remove the screw (camera tapping M1.4 × 2)5. must be inserted into the U-shaped notch of the S ratchet arm
7) Remove the cassette guide S 6 in the direction of the arrow 3.
B. 4) Hook the S ratchet spring 2 on the notch of the S ratchet arm
and attach it to the notch of the LS chassis block assembly.
5) Attach the RE return plate spring 1 to the notch of the LS
chassis block assembly.
6) Attach the blind plate. (Refer to 4-5.)
Remove the S ratchet arm in the
direction of the arrow A.
Do not reuse
the S ratchet arm. dowel
A
B
Fixed here.
3 S ratchet arm
2 S ratchet
spring
S ratchet spring B
Remove the S ratchet (RE) plate in the 6 Remove the cassette
direction of the arrow B. guide (S) in the direction
of the arrow B.
4 S ratchet
(RE) plate
1 RE return plate spring
5 Screw
(camera tapping M1.4 × 2)
Fig. 4-7.
-- 20 --
4-8. R Drive Gear Assembly, LS Cam Plate
1. Removal procedure 2. Attachment procedure
1) Remove the blind plate. (Refer to 4-5.) 1) Attach the R drive gear assembly 2 with the lumiler cut washer
2) Remove the lumiler cut washer (0.98 × 3 × 0.13) 1. (0.98 × 3 × 0.13) 1.
3) Remove the R drive gear assembly 2. 2) Align the LS cam plate 5 with the two dowels of the LS chassis
4) Remove the HLC cut (1.8 × 4 × 0.5) 3 and the two screws block assembly, temporarily fix the LS cam plate 5 with the
(precision type3 +P1.7 × 1.8) 4. two screws (precision type3 +P1.7 × 1.8), then attach it with
5) Remove the LS cam plate 5. the HLC cut (1.8 × 4 × 0.5) 3.
3) Adjust the position of the LS cam plate. (Refer to 4-9.)
4 Two screws
(precision type3 +P1.7 × 1.8)
5 LS cam plate 3 HLC cut (1.8 × 4 × 0.5)
1 Lumiler (W)
cut (0.98 × 3 × 0.13)
When attaching it, coat
Do not bend the claw. the hatched portion
with grease.
2 R drive gear
assembly
Two dowel
When attaching it, coat the hatched
portion with grease.
Fig. 4-8.
-- 21 --
4-9. LS Cam Plate Position Adjustment
1. Adjustment Procedure
1) Perform loading of the LS chassis block assembly 1 until the
tip of the guide base (S) assembly reaches the drum base
assembly.
2) Loosen the two screws (precision type3 +P1.7 × 1.8) 2 of the
LS cam plate and slide the LS chassis block assembly to the
drum side so as to remove play.
3) Insert the thickness gauge 0.6 mm (Ref. No. J-16) between the
LS cam plate and the LS chassis block assembly. Push the LS
cam plate in the direction opposite to the drum to remove play.
4) Fix the two screws (precision type3 +P1.7 × 1.8) 2.
Tightening torque: 0.108 ± 0.01 N·m (1.1 kgf·cm)
Two screws
(precision type3 +P1.7 × 1.8)
Thickness
gauge
t =0.6mm
Two dowels
LS cam plate
1 LS chassis
block assembly
2 Push the LS chassis
block assembly
to remove play.
Guide base (S)
block assembly
Fig. 4-9.
-- 22 --
4-10. LS Chassis Block Assembly
1. Removal procedure 2. Attachment procedure
1) Move the LS chassis block assembly between [USE] and 1) Insert the LS guide roller and LS guide T2 pin of the mechanical
[LOAD]. chassis block assembly into the slot of the LS chassis block
2) Remove the blind plate. (Refer to 4-5.) assembly 4.
3) Remove the R drive gear assembly. (Refer to 4-8.) 2) Insert the pin of the LS arm assembly into the cam groove on
4) Remove the HCL cut (1.8 × 4 × 0.5) 1. the LS cam plate, face the TG7 drive pin 5 in the direction of
5) Remove the three screws (M1.4 × 2.5) 2. the arrow B, and insert it to the two slot of the mechanical
6) Remove the LS chassis block assembly 3 in the direction of chassis. Then, tighten the three screws (M1.4 × 2.5) 2 in the
the arrow A. order of C, D and E.
Tightening torque: 0.078 ± 0.01 N·m (0.8 ± 0.1 kgf·cm)
3) Attach the HCL cut (1.8 × 4 × 0.5) 1 to the pin of the LS arm
assembly.
4) Attach the R drive gear assembly. (Refer to 4-8.)
5) Attach the blind plate. (Refer to 4-5.)
6) Clean the tape running path. (Refer to 2-2.)
Note: Each arm must move smoothly.
C
When attaching it, coat the hatched
portion with grease. 4 Slot of LS chassis 2 Three screws
(at two locations) D (M1.4 × 2.5)
E
1 HCL cut
(1.8 × 4 × 0.5)
LS cam plate
5 TG7 arm block
assembly Cam groove
3 Remove the LS chassis
A block assembly in the