JVC GR-D270US, GR-D271US, GR-D275US, GR-D290US, GR-D295US Schematic

86700200304

SERVICE MANUAL

MECHANISM ASSEMBLY

DVC MECHANISM

VHS-C MECHANISM

VHS MECHANISM

<DVC MECHANISM> <VHS MECHANISM><VHS-C MECHANISM>

TABLE OF CONTENTS

1 JIGS AND TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

3 PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.

No.86700

2003/04

1.1 TOOLS REQUIRED FOR ADJUSTMENTS

1.

3.

5. 6.

Torque driver

YTU94088

Tweezers

P-895

Slit washer installation jig

YTU94121A

2.

Chip IC replacement jig

4.

Bit

YTU94088-003

PTS40844-2

Cleaning cloth

KSMM-01

SECTION 1

JIGS AND TOOLS

1. Torque driver

Be sure to use to fastening the mechanism and exterior parts
because those parts must strictly be controlled for tightening
torque.
Torque setting value of torque driver is limited. At the values
over the maximum torque setting value, fasten a screw
manually not to damage the screw thread.

2. Bit

This bit is slightly longer than those set in conventional torque
drivers.

3. Tweezers

To be used for removing and installing parts and wires.

4. Chip IC replacement jig

To be used for replacement of part.

5. Slit washer installation jig

To be used to install slit washers.

6. Cleaning cloth

Recommended cleaning cloth to wipe down the video heads,
mechanism (tape transport system), optical lens surface.

Fig.1-1-1

1-1 (No.86700)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2.1 DVC MECHANISM

2.1.1 Precautions

(1) When fastening parts, pay careful attention to the tighten-

ing torque of each screw. Unless otherwise specified, tight­en a screw with the torque of 0.055 N•m (0.56 kgf•cm).

(2) Be sure to disconnect the set from the power supply before

fastening and soldering parts.

(3) When disconnecting/connecting wires, be careful not to get

them and their connectors damaged.

(4) When replacing parts, be very careful neither to damage

other parts nor to fit wrong parts by mistake.

2.1.2 Notes on procedure for disassembly/assembly

The disassembling procedure table (Fig. 2-1-10 on page 2-4,a
part of the table is shown below for reference)shows the proce­dure to disassemble/reassemble mechanism parts.
Carefully read the following explanation before starting actual
disassembling/reassembling work. The item numbers(circled
numbers)in the following explanation correspond to those ap­pearing under respective columns of the table.

Example

NO. PART NAME FIG. POINT NOTE REMARKS

[1]
[2]
[3]
[4]
[5]
[6]

*1 *2 *3 *4 *5 *6 *7

*1 Numbers appearing in this column indicate the order to re-

move parts. When reassembling, follow these numbers in
the reverse order. Circled numbers in this column corre­spond to those appearing in drawings of this section.

*2 This column shows part names corresponding to numbers

in the left column.

*3 The symbol (T or B)appearing in this column shows the

side which the objective part is mounted on.
T =the upper side, B =the lower side

*4 Symbols appearing in this column indicate drawing num-

bers.

*5 This column indicates parts and points such as screws,

washers,springs,and others to be removed/fitted for disas­sembling/reassembling the mechanism. Besides such the
parts, this column occasionally indicates working points.

P= Spring
W= Washer
S= Screw
* = Lock (L),soldering (SD),shield,connector (CN),etc.

Example

CASSETTE HOUSING ASSY T Fig.2-4-3 3(S1),(L1a)-(L1e)
UPPER BASE ASSY T Fig.2-4-4 (S2),(L2a),(L2b)
DRUM ASSY T (S3a),2(S3b)
REEL DISK ASSY(SUP) T Fig.2-4-5 (W4)
REEL DISK ASSY(TU) T
REEL COVER ASSY T

• Remove (W1)=Washer W1.

• Remove the solder at (SD1)=Point SD1.

• Disconnect A = Connector A.

(W5a),(W5b),(W5c)
(W6),(S6a),2(S6b)

*6 Numbers in this column represent the numbers of notes in

the text.
(For parts that need phase adjustment after reassembling,
refer to “MECHANISM ADJUSTMENTS”.)

*7 This column indicates required after-disassembling/-reas-

sembling work such as phase adjustment or mechanism
adjustment.

NOTE 1 a,b,c,d
NOTE 2
NOTE 3 a,b
NOTE 4 a
NOTE 5 a,b
NOTE 6

ADJUSTMENT

ADJUSTMENT

(No.86700)2-1

2.1.3 DISASSEMBLY AND ASSEMBLY OF MECHANISM ASSEMBLY

2.1.3.1 General statement

The mechanism should generally be disassembled/assembled in
the C.IN mode (ASSEMBLY mode). (Refer to Fig. 2-1-1,2-1-2.)
However, when the mechanism is removed from the main body,
it is set in the STOP mode. Therefore, after the mechanism is re­moved from the main body, supply 3 V DC to the electrode on the
top of the loading motor to enter the mechanism mode into the C
IN mode compulsory.

<Mechanism assembly/Cassette housing assembly>

2.1.3.2 Explanation of mechanism mode

The mechanism mode of this model is classified into five modes
as shown in Fig. 2-1-9. Each mechanism mode can be distin­guished from others by the relative position of “ ”, “ ”, “ ”, “ ”
marks on the sub cam gear to the inner or outer protrusion on the
main deck.
Refer to Fig. 2-1-3 to 2-1-8 below.

DC3V

LOADING MOTOR

<SUB CAM GEAR>

TOP VIEW BOTTOM VIEW

Fig.2-1-3

<C IN mode>

Fig.2-1-4

Fig.2-1-1

<Back side of the mechanism assembly>

C IN mode

<SHORT FWD mode>

Fig.2-1-5

<STOP mode>

Fig.2-1-6

<REV mode>

Fig.2-1-7

2-2 (No.86700)

<PLAY mode>

Back side of deck

Fig.2-1-2

Fig.2-1-8

2.1.3.3 Mechanism timing chart

PARTS

MAIN CAM

SUB CAM

ROTARY
ENCODER

EJECT LEVER

TENSION ARM

PAD ARM

TU ARM

SLIDE DECK

SUP. L. ARM

TU. L. ARM

P. ROLLER

BRAKE (S)

BRAKE (T)

MODE

a

b

c

ON

OFF

L. END

LOCK

UL

L. END

OFF

UL

ON

OFF

LOAD

UL

L. END

LOAD

UL

L. END

LOAD

UL

PRESS

LOAD

UL

ON

OFF

ON

OFF

R

SHORT

o

68

o

0

o

0

o

0

o

RELEASE

(30.71o) (95.14o) (110.06o) (206.06o) (210.05o)80.34

(27.14o) (84.08o) (97.35o) (182.10o) (185.63o)71

EJECT

C IN

-12.40o (22.44o) (69.53o) (80.5o) (150.58o) (153.5o)58.71

o

-16.97

o

-15

-13o-3o3

o

74

o

o

o

TU. P. B

START

SLIDE

START

TU. P. B

END

SLIDE

END

STOP PLAYREVFWD

177.79

243.29

o

215

212o218

o

o

o

o

212.77

o

291.16

o

257.3

254.3o260.3

o

243.94

333.82

o

295

292o310

o

o

o

CTL PLATE

RELEASE
LEVER

C

L

ON

OFF

Fig.2-1-9

(No.86700)2-3

2.1.4 DISASSEMBLY PROCEDURE TABLE
MARK: # After assembly, perform adjustments.

NO. PART NAME

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]

[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]
[32]
[33]
[34]

[35] / [36]

[36]
[37]

CASSETTE HOUSING ASSY
UPPER BASE ASSY
DRUM ASSY
REEL DISK ASSY(SUP)
REEL DISK ASSY(TU)
REEL COVER ASSY
TENSION ARM ASSY
SLANT POLE ARM ASSY
TU ARM ASSY
SWING ARM ASSY
SLIDE DECK ASSY

PAD ARM ASSY

­TU BRAKE ASSY
TENSION CTL LEVER ASSY
CENTER GEAR
PINCH ROLLER ARM F. ASSY
TENSION CTL PLATE ASSY
BRAKE CTL LEVER ASSY
MOTOR BRACKET ASSY
GUIDE RAIL ASSY
SLIDE LEVER 2 ASSY
LOADING PLATE ASSY
MODE GEAR
EJECT LEVER
BASE R ASSY
ROTARY ENCODER
GEAR COVER ASSY
MAIN CAM ASSY
SLIDE ARM ASSY
CONNECT GEAR 2
SUB CAM ASSY
CONTROL ARM ASSY
REEL GEAR 1
DRUM BASE ASSY/

CAPSTAN MOTOR
CAPSTAN MOTOR
MAIN DECK ASSY

FIG. POINT NOTE REMARKS

T Fig.2-1-14
T Fig.2-1-15
T
T Fig.2-1-16
T
T
T Fig.2-1-17
T
T
T
T Fig.2-1-18

3(S1),(L1a)-(L1e)
(S2),(L2a),(L2b)
(S3a),2(S3b)
(W4)
(W5a),(W5b)
(W6),2(S6a),(S6b)
(L7)
(P8)
(L9)
(S10)

2(S11a),(S11b),2(L11a),

NOTE 1 a,b,c,d
NOTE 2
NOTE 3 a,b
NOTE 4
NOTE 5 a,b
NOTE 6
NOTE 7
NOTE 8
NOTE 9
NOTE 10
NOTE 11a,b

2(L11b),(L11c)

T Fig.2-1-19

­T
T Fig.2-1-20
T
T
T
T
T Fig.2-1-21
T
T
T
T
T
T Fig.2-1-22
T
T
T
T Fig.2-1-23
T
T
T
T
T Fig.2-1-24

T
T

(P12),(L12),(W12)

­(P14),(L14),(W14)
(W15)

­(W17)

-

­3(S20),(L20a),2(L20b)
2(W21),(S21),2(L21a),(L21b)

­(W23)

­(W25)
(S26a),(S26b),2(L26)
2(S27)
(S28a),2(S28b)

-

-

­(S32)

-

­3(S35)

(S36)

-

Fig.2-1-10

NOTE 12

-

NOTE 14
NOTE 15
NOTE 16
NOTE 17
NOTE 18
NOTE 19
NOTE 20
NOTE 21
NOTE 22
NOTE 23
NOTE 24
NOTE 25
NOTE 26
NOTE 27

-

NOTE 29
NOTE 30
NOTE 31
NOTE 32
NOTE 33
NOTE 34
NOTE 35a,b

NOTE 36

-

ADJUSTMENT

ADJUSTMENT

ADJUSTMENT / #
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT / #

ADJUSTMENT / #

ADJUSTMENT
ADJUSTMENT

ADJUSTMENT
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT / #
ADJUSTMENT

ADJUSTMENT
ADJUSTMENT
PHASE ADJUSTMENT

PHASE ADJUSTMENT
ADJUSTMENT

PHASE ADJUSTMENT
ADJUSTMENT

ADJUSTMENT

ADJUSTMENT

2-4 (No.86700)

2

(S1)

[1]

17

(S20)

(W12)

[14]

(S20)

[20]

16

[12]

[8]

(P8)

(W14)

(P14)

14

(S11b)

(P12)

(S20)

15

(W4)

[4]

(S6a)

[6]

[7]

(W23)

21

(S27)

[18]

27

[35]

7

5

28

(S35)

[17]

4

(S2)

[36]

[2]

(S36)

(W17)

[3]

30

29

(S35)

1

(S1)

(W5a)

8

(W6)

[27]

[30]

[23]

(W5b)

11

(S10)

22

(S27)

[5]

10

(S6b)

13

(S11a)

3

(S1)

[34]

9

(S6a)

[10]

(S11a)

[11]

(W21)

12

[22]

(W21)

(S21)

[21]

[9]

(S35)

(S3b)

(S3a)

6

(S3b)

18

(W15)

(S28b)

[15]

24

[29]

[16]

[31]

25

(S28b)

[28]

23

(S28a)

[19]

[24]

[37]

Fig.2-1-11

20

(S26b)

(W25)

[25]

19

(S26a)

26

(S32)

[26]

[32]

[33]

(No.86700)2-5

< TOP VIEW >

[24] [27] [ 2 ] [ 3 ] [36] [35][21]

[17]

< BOTTOM VIEW >

[20]
[23]
[18]
[8]
[7]
[22]
[12]
[4]

[29]

[19]

[34]

[14][31][28][16][15][30]

[5]

Fig.2-1-12

[36] [3] [22]

[26]
[34]
[9]
[10]
[33]
[26]
[6]
[37]
[25]

[32]

[11]

[26]

[32]

[25]

[31] [16] [6]

Fig.2-1-13

[37]

[11]

[27]
[20]
[30]
[18]
[19]
[29]

[30]

2-6 (No.86700)

2.1.5 DISASSEMBLY/ASSEMBLY

2.1.5.1 [ 1 ] CASSETTE HOUSING ASSY
NOTE 1a:

Be careful not to damage any of the parts during work.

NOTE 1b:

Special care is required in mounting.

NOTE 1c:

When mounting, the CASSETTE HOUSING ASSY should be
attached in the Eject status. Pay heed to the positions of the
LOCK LEVER and EJECT LEVER during mounting.

NOTE 1d:

When mounting, be sure to locate the FPC in the gap.

NOTE 1b

NOTE 1c

EJECT
LEVER

LOCK
LEVER

NOTE 1d

*

2

(S1)

NOTE 1b

(L1d)

(L1c)

(L1b)

NOTE 1a

[1]

LOCK
LEVER

NOTE 1c

NOTE1d

*

1

(S1)

NOTE 1d

2.1.5.2 [ 2 ] UPPER BASE ASSY
[ 3 ] DRUM ASSY

NOTE 2:

When mounting, be sure to insert the FPC reinforcing sheet.

NOTE 3a:

Be mindful of scratches or damage during work.

NOTE 3b:

Be careful not to attach screws incorrectly.

NOTE 2

NOTE 3b

5

7

6

(L1e)

* 0.069 N.m (0.7 kgf.cm)

Fig.2-1-14

NOTE 3a

[3]

4

(S2)

3

(S1)

(L1a)

*

[2]

NOTE 2

(L2b)

6

(S3b)

7

(S3b)

Fig.2-1-15

(L2a)

NOTE 2

5

(S3a)

NOTE 3b

(No.86700)2-7

2.1.5.3 [ 4 ] REEL DISK ASSY(SUP)
[ 5 ] REEL DISK ASSY(TU)
[ 6 ] REEL COVER ASSY

NOTE 4:

Be careful not to attach the REEL DISK wrongly. The Supply
side can be identified by the white color at the center.

NOTE 5a:

Be careful not to attach the REEL DISK wrongly. The Take-up
side can be identified by the black color at the center.

NOTE 5b

The washer is inserted under the REEL DISK.
Be carefull not to lose the washer.
Two washers are inserted under the REEL DISK in some prod­ucts manufactured earlier, but one washer is inserted in the
products manufactured recently and in the future.
See the parts list, and use the parts written in the parts list.

NOTE 6:

Perform the following steps for mounting.

(1) Align the hole with the pin.
(2) Attach the [17] PINCH ROLLER ARM FINAL ASSY by

aligning the positions.

(3) Attach the SLIDE DECK ASSY (POINT[A]) by aligning

the positions.

(4) Check that the parts below them are located in the cor-

rect positions.
(5) Tighten the 2 screws.
(6) Tighten the screw.
(7) Attach the 1 SLIT WASHER parts.

NOTE 4

[4]

[6]

NOTE 6

8

(S6a)

(W4)

(W6)

(W5a)

(W5b)

NOTE 5a

[5]

NOTE 5b

10

(S6b)

9

(S6a)

[17]

NOTE 4, 5

REEL DISK ASSY

WHITE

SUP

TU

BLACK

NOTE 6

(3)

[A]

(4)

(5)

Fig.2-1-16

(2),(6)

(1), (7)

2-8 (No.86700)

2.1.5.4 [ 7 ] TENSION ARM ASSY
[ 8 ] SLANT POLE ARM ASSY
[ 9 ] TU ARM ASSY
[10] SWING ARM ASSY

NOTE 7:

When detaching, remove the spring of the [12] PAD ARM
ASSY in advance.
Pay attention to the attachment position.

NOTE 8:

When mounting the SLANT POLE ARM ASSY, hook the
spring onto the lug as in diagram A, and fit the combination
onto the SLIDE DECK ASSY. After fitting, hook the spring onto
the lug of the SLIDE DECK ASSY as in diagram B.
Be careful not to lose the spring.

NOTE 9:

Pay attention to the attachment position.

NOTE 10:

When detaching, remove the screw then remove the SWING
ARM ASSY by pulling it up and turning it.

NOTE 7

(L7)

[7]

(P8)

NOTE 8

NOTE 10

[10]

[8]

NOTE 9

[9]

11

(S10)

(L9)

NOTE 7

NOTE 9

SPRING

NOTE 8

AB

SPRING

NOTE 10

NOTE 7

Fig.2-1-17

(No.86700)2-9

2.1.5.5 [11] SLIDE DECK ASSY
NOTE 11a:

Each of the parts on the SLIDE DECK ASSY can be replaced
separately.
When detaching the assembly, if there is no need to replace
any of its parts, remove the SLIDE DECK ASSY as it is.

NOTE 11b:

When mounting, pay attention to the positions of the [22]
SLIDE LEVER 2 ASSY studs and the [19] BRAKE CTL LE­VER ASSY.
When mounting, position the CONTROL PLATE on the left
side.
Pay attention to the position of the SLIDE GUIDE PLATE dur­ing mounting.

NOTE 11b

SLIDE GUIDE
PLATE

(L11b)

14

(S11b)

NOTE 11b

(L11c)

13

(S11a)

12

(S11a)

NOTE 11a

[11]

(L11a)

2.1.5.6 [12] PAD ARM ASSY
[13] ­[14] TU BRAKE ASSY

NOTE 12:

The spring may have already been disengaged when the [ 8 ]
SLANT POLE ARM ASSY was removed.

NOTES 14:

When mounting, pay attention to the correct positioning.
Mount the CONTROL PLATE by moving it fully toward the left
side.

NOTE 12,14

[12]

CONTROL
PLATE

SPRING

[14]

(W12)

Fig.2-1-18

[12]

NOTE 12

(P12)

(W14)

(L12)

Fig.2-1-19

(P14)

[14]

NOTE 14

(L14)

2-10 (No.86700)

2.1.5.7 [15] TENSION CTL LEVER ASSY
[16] CENTER GEAR
[17] PINCH ROLLER ARM FINAL ASSY
[18] TENSION CTL PLATE ASSY
[19] BRAKE CTL LEVER ASSY

NOTES 15/16:

When mounting, pay attention to the correct positioning.

NOTE 17:

Take care against grease attachment during work.

NOTES 18/19:

When mounting, pay attention to the correct positioning.

NOTE 15

NOTE 16

(TOP)

(BOTTOM)

(W15)

NOTE 18

NOTE 19

[19]

[18]

NOTE 17

[17]

[16]

NOTE 16

(W17)

NOTE 17

2.1.5.8 [20] MOTOR BRACKET ASSY
[21] GUIDE RAIL ASSY
[22] SLIDE LEVER 2 ASSY
[23] LOADING PLATE ASSY
[24] MODE GEAR
[25] EJECT LEVER

NOTE 20:

When mounting, pay attention to the positi oning of the slidi ng
parts.

NOTE 21:

When mounting, take care that no part is allowed to float or rat­tle.

NOTES 22/23/24/25:

When mounting, pay attention to the correct positioning.

NOTE 20 NOTE 21

NOTE 18

NOTE 19

NOTE 22

[15]

NOTE 15

NOTE 20

17

(S20)

(S20)

[20]

(L20a)

(L20b)

16

Fig.2-1-20

NOTE 21

[21]

15

(S20)

NOTE 23

(W23)

[23]

(W21)

(W21)

[22]

NOTE 24

18

(S21)

(L21a)

(L21b)

NOTE 22

[24]

NOTE 23

NOTE 24

(W25)

NOTE 25

[25]

NOTE 25

Fig.2-1-21

(No.86700)2-11

2.1.5.9 [26] BASE R ASSY
[27] ROTARY ENCODER
[28] GEAR COVER ASSY
[29] MAIN CAM ASSY

NOTE 26:

When mounting, fold the sliding part to the inner side.

NOTE 27:

When mounting, pay attention to the correct positioning and
the FPC layout.

NOTE 29:

When mounting, pay attention to the correct positioning.

NOTE 26 NOTE 27 NOTE 29

(S28b)

[28]

NOTE 27

[27]

24

25

(S28b)

21

(S27)

23

(S28a)

22

(S27)

(S26a)

19

*

20

(S26b)

2.1.5.10 [30] SLIDE ARM ASSY
[31] CONNECT GEAR 2
[32] SUB CAM ASSY
[33] CONTROL ARM ASSY
[34] REEL GEAR 1

NOTE 30:

When mounting, pay attention to the correct positioning.

NOTE 31:

When mounting, pay attention to the position of the front and
back.

NOTES 32/33/34:

When mounting, pay attention to the correct positioning.

NOTE 30 NOTE 31

(TOP)

(BOTTOM)

[29]

NOTE 29

* 0.0198N

NOTE 30

[30]

.

m (0.2kgf.cm)

NOTE 31

[31]

Fig.2-1-22

26

(S32)

NOTE 32

[26]

NOTE 26

[32]

[33]

NOTE 33

(L26)

NOTE 34

[34]

NOTE 32/33

2-12 (No.86700)

NOTE 34

[33]

[32]

Fig.2-1-23

2.1.5.11 [35] DRUM BASE ASSY
[36] CAPSTAN MOTOR
[37] MAIN DECK ASSY

NOTES 35a/36:

Since [36]CAPSTAN MOTOR is attached to [35]DRUM BASE
ASSY, remove [36]CAPSTAN MOTOR together with
[35]DRUM BASE ASSY when removing [36]CAPSTAN MO­TOR.
[36]CAPSTAN MOTOR should not be separated from
[35]DRUM BASE ASSY except when replacing them.

NOTE 35b:

It is very important to attach [35]DRUM BASE ASSY to the
proper position.
Especially, improper engagement of [36]CAPSTAN MOTOR
with [34]REEL GEAR 1 causes operational defection or abnor­mal sound. Therefore, confirm the attachment position before
disassembly procedure.
See the following figure as for the proper attachment position.

NOTE 35b

NG
OK

When [35]DRUM BASE ASSY
is properly attached, the screw
hole tends to be located at the
center of the oval.

NG

When the screw hole is
located far from the center of
the oval, operational defection
or abnormal sound may occur.

*

28

(S35)

*

27

(S35)

[35]

NOTE 35a

[36]

NOTE 36

* 0.078 N.m (0.8 kgf.cm)
** 0.039 N.m (0.4 kgf.cm)

30

(S36)

[37]

**

29

(S35)

*

NOTE 35b

Fig.2-1-24

(A)

Before removing [35]DRUM
BASE ASSY, confirm the
position of [35]DRUM BASE
ASSY by seeing the length
(A), as shown in the left figure.

When reattaching [35]DRUM
BASE ASSY, confirm the
position to reattach [35]DRUM
BASE ASSY by seeing the
length (A). Be sure to reattach
[35]DRUM BASE ASSY to the
same position as it has been
before the removing proce­dure.

(No.86700)2-13

2.1.6 CHECKUP AND ADJUSTMENT OF MECHANISM PHASE

MODE GEAR

[24]

Align the MODE GEAR with the Main Deck
Assembly hole.

Note:

The MODE GEAR may
be displaced during the
mechanism operation,
however it can be
checked from the rear
and realigned during
manual assembly.

[27]

ROTARY ENCODER

Mount the ROTARY ENCODER by aligning its mark ( )
and the mark ( ) of the Main Deck Assembly.

Note:

Be careful when handling the FPC during mounting.

[34]

REEL GEAR 1

Align the REEL GEAR 1 with
the Main Deck Assembly hole.

Note:

The REEL GEAR 1 may be
displaced during mechanism
operation, however this can
be checked from the rear and
realigned during manual
assembly.

[29]

MAIN CAM ASSY/[30]SLIDE ARM ASSY

When mounting the SLIDE ARM ASSY align it with the
Main Deck Assembly and MAIN CAM ASSY holes.

Note:

During the mounting procedure, make sure that the[32]
SUB CAM ASSY is in the correct mounting position.

[32]

Fig.2-1-25

SUB CAM ASSY/[33] CONTROL ARM ASSY

Mount the SUB CAM ASSY hole to align with the CONTROL
ARM ASSY and Main Deck Assembly holes and then tighten
them all together with a screw.

Note:

When mounting it, make sure that the[29]MAIN CAM ASSY is
in the correct mounting position.

2-14 (No.86700)

2.1.7 MECHANISM ADJUSTMENTS

2.1.7.1 Adjustment of the slide guide plate

Use Fig. 2-1-26 as the reference unless otherwise specified.

(1) Set the PLAY mode. See Fig. 2-1-8.
(2) Loosen the screws (A, B).
(3) With the Main Deck and Slide Deck Assemblies pushed into the unit, tighten the screws (A, B) while applying pressure to the

stud (shaft) on the Slide Guide plate.
The pressure applied should be enough to enable utilization of the rebounding force of the springs.
The tightening torque should be 0.069 N•m (0.7 kgf•cm).

(4) Check the operation.

Repeat unloading and loading several times and make sure that these operations can be performed smoothly without producing
rattles.

(3)

(

2)(3

)

SCREW A

(3)

STUD

(SHAFT)

(3)

2)(3

)

(

SCREW B

(3)

(3)

Fig.2-1-26

(No.86700)2-15

2.1.7.2 Adjustment of the Tension Arm and Pad Arm As­semblies

Use Fig. 2-1-27 as the reference unless otherwise specified.

(1) Set the PLAY mode.

See Fig. 2-1-8.
(2) Loosen the screw A.
(3) With the take-up side at the bottom, align the extreme end

of the Tension Arm Assembly with the crossed grooves on

the screw B that retains the Loading Motor Assembly and

then tighten the screw A.

The tightening torque should be 0.069 N•m (0.7 kgf•cm).
(4) Check the operation.

Repeat unloading and loading several times and make

sure that the Tension Arm Assembly is located within the

normal range.

TENSION
ARM ASSY

SCREW B

(

2)(3

)

SCREW A

Fig.2-1-28

(

(3)

3)

(

2)(3

)

SCREW A

Fig.2-1-27

2.1.7.3 Adjustment of the Slide Lever 2

Use Fig. 2-1-28 as the reference unless otherwise specified.

(1) Set the C IN mode.

See Fig. 2-1-4.
(2) Loosen the screw A.
(3) Set the Main Deck and Slide Deck Assemblies apart so that

they do not rattle, then tighten the screw A by screwing it

fully toward the Drum Assembly.

The tightening torque should be 0.069 N•m (0.7 kgf•cm).
(4) Check the operation.

Repeat unloading and loading several times and make

sure that these operations can be performed smoothly

without producing rattles.

2-16 (No.86700)

2.1.8 SERVICE NOTE

Use the following chart to manage mechanism parts that are removed for disassembling the mechanism.

[1]

CASSETTE HOUSING ASSY UPPER BASE ASSY

[2]

Fig.2-1-14

[3]

Fig.2-1-15

[7]

DRUM ASSY

TENSION ARM ASSY

Fig.2-1-15

REEL DISK ASSY(SUP)

[4]

Fig.2-1-16

SLANT POLE ARM ASSY SWING ARM ASSYTU ARM ASSY

[ 8 ] [ 9 ] [10]

REEL DISK ASSY(TU)

[5]

REEL COVER ASSY

[6]

Fig.2-1-17

[11]

Fig.2-1-18

SLIDE DECK ASSY

Fig.2-1-19

Fig.2-1-29

PAD ARM
ASSY

[13][12]

TU BRAKE

[14]

ASSY

(No.86700)2-17

[15]

Fig.2-1-20

TENSION CTL
LEVER ASSY

CENTER GEAR

[16]

PINCH ROLLER

[17]

ARM F ASSY

TENSION

.

[18]

CTL PLATE
ASSY

[19]

BRAKE CTL
LEVER
ASSY

[20]

Fig.2-1-21Fig.2-1-22Fig.2-1-23Fig.2-1-24

[26]

[30]

MOTOR
BRACKET
ASSY

BASE R ASSY

SLIDE ARM
ASSY

[31]

[21]

ROTAR Y

[27]

ENCODER

CONNECT
GEAR 2

GUIDE
RAIL ASSY

[32]

[28]

SUB CAM
ASSY

[22]

[24]

GEAR COVER
ASSY

[33]

SLIDE LEVER 2
ASSY

MODE GEAR EJECT LEVER

MAIN CAM ASSY

[29]

CONTROL
ARM ASSY

[23]

[25]

[34]

LOADING
PLATE ASSY

REEL GEAR 1

[35]

2-18 (No.86700)

DRUM BASE ASSY

CAPSTAN MOTOR MAIN DECK ASSY

[36]

Fig.2-1-30

[37]

2.1.9 SERVICE NOTE

Use the following chart to manage screws.

[22]

21 2215

Symbol No. [1] [2] [3] [6] [10] [11] [20] [21]

Removing order of screw 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Place to stick screw

24

Pay careful attention to tightening t or que for each screw.

[27]

<NOTE>

Symbol No. [28] [32] [35] [36]

Place to stick screw

Screw tightening torque

Removing order of screw 21 22 23 24 25 26 27 28 29 30

Screw tightening torque

Reference drawing (Fig. No.2-1-**) 14 16 17 18

Reference drawing (Fig. No.2-1-**) 22 23

Fig.2-1-31

(No.86700)2-19

2.1.10 REMARKS

2.1.10.1 Cleaning

(1) For cleaning of the upper drum (particularly video heads),

use fine-woven cotton cloth with alcohol soaks through. Do

not move the cloth but turn the upper drum counterclock-

wise.

NOTE:

Make sure not to move the cloth in the vertical directi o n

to the video head, since it may cause damage of the video

heads.
(2) For cleaning of parts of the tape transport system except

the upper drum, use fine-woven cotton cloth or cotton swab

soaked alcohol.
(3) After cleaning, confirm that the cleaned parts are complete-

ly dry before loading the deck with cassette tape.

2.1.10.2 Applying oil and grease

(1) Periodical oiling and greasing are not required but should

be done to new parts when replacing. If oil and grease on

the other parts of the other party are old and dirty, wipe

them clean and apply new oil or grease.
(2) For parts and points to apply oil and grease, refer to the ex-

ploded view of the 3.1 DVC MECHANISM ASSEMBLY.

Fig.2-1-32 specifies oil and grease to be used.
(3) When oiling, clean the objective parts with alcohol first and

apply one or two drop(s) of oil. Too much oiling causes ro-

tary parts to slip because of oil leakage.

Classification Part No. Symbol in drawing
Grease KYODO-SH-JB AA
Oil YTU94027 BB
Grease (HANARL)

RX-410R CC

specifies oil and grease to be used

Fig.2-1-32

2-20 (No.86700)

2.2 VHS-C MECHANISM

2.2.1 Precautions

(1) When fastening parts, pay careful attention to the tighten-

ing torque of each screw. Unless otherwise specified, tight­en a screw with the torque of 0.216 N•m (2.2 kgf•cm).
Torque setting value of torque driver is limited. At the val­ues over the maximum torque setting value, fasten a screw
manually not to damage the screw thread.

(2) Be sure to disconnect the set from the power supply before

fastening and soldering parts.

(3) When disconnecting/connecting wires, be careful not to get

them and their connectors damaged.

(4) When replacing parts, be very careful neither to damage

other parts nor to fit wrong parts by mistake.

Example

STEP/LOC.

No.

[1]
[2]
[3]

ROLLER BASE ASSEMBLY T M1 (S1) –
TENSION ARM ASSEMBLY T M1 (P1), (W1a) –
REEL DISC (SUP) T M1 (W1a), (W1b) _

PART NAME

*1 *2 *3 *4 *5 *6

FIG.

REMOVAL INSTALLATION

ADJUSTMENT

POINT CONDITION

NOTE

2.2.2 How to read the disassembly and assembly

*1 Order of steps in Procedure

When reassembling, perform the step(s) in the reverse or­der. These numbers are also used as the identification (lo-

cation) No. of parts Figures.
*2 Part to Name be removed or installed.
*3 Location of part.

T = The Upper side

B = The Lower side
*4 Fig. No. showing Procedure or Part Location.

M = Mechanism
*5 Identification of part to be removed, unhooked, unlocked,

released, unplugged, unclamped or unsoldered.

P= Spring

W= Washer

S= Screw

* = Unhook, unlock, release, unplug or unsolder.

Example

• Remove (W1)=Washer W1.

• Remove the solder at (SD1)=Point SD1.

• Disconnect A = Connector A.

*6 Adjustment information for installation.

(+) = Refer to Exploded Views for Lubrication information.

(No.86700)2-21

2.2.3 DISASSEMBLY/ASSEMBLY PROCEDRURE TABLE

This procedure starts with the condition that the cabinet parts and deck parts. Also, all the fo llowing procedures for adjustment and
parts replacement should be performed in STOP mode. When reassembling, perform the step(s) in the reverse order.

REMOVAL INSTALLATION

STEP/LOC.

No.

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]

[10]

[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]
[32]

[33]
[34]

[35]
[36]

[37]

PART NAME

ROLLER BASE ASSY T M1 (1) –
TENSION ARM ASSY M1 (P1), (W1a) –
REEL DISC T M1 (W1a), (W1b) –
SLANT ARM ASSY M1 (W1a) –
CANCEL LEVER ASSY M2 (W2) –
EJECT LEVER ASSY M2 (W2) –
CASSETTE GUIDE (LEFT) M2 (2) –
SUPPLY CLUTCH ASSY M2 (W2) –
WHEEL GEAR T M2 (W2) See, Adjustment procedure for

ROTARY ENCODER

TIMING BELT B M3 – –
CENTER PULLEY UNIT T/B M3 2(S3a) –
CASSETTE GUIDE (R) ASSY T M3 (S3b), (P3) (Only use SVHS model)
TAKE UP GEAR T M3 (W3a) –
BRAKE SUB GEAR T M3 (W3a) –
PINCH ROLLER ARM ASSY
TAKE UP GUIDE ARM ASSY T M3 (W3a) –
LINK ARM ASSY T M4 (W4) –
LED GUIDE T M4 (S4a) –
A/C HEAD UNIT
SLANT POLE BASE ASSY T M5 (S5a) –
CAPSTAN MOTOR
MOTOR BASE M5 2(S5b), (S5c) –
BRUSH M6 (S6a) –
DRUM FINAL ASSY T/B M6
GUIDE RAIL M6 7(S6d)
POLE BASE (S)ASSY
POLE BASE (T)ASSY T M6
COVER PLATE T M7
DRIVE LEVER ASSY
MOTOR BRACKET ASSY
CONTROL CAM T M8 (W8a) See, Adjustment procedure for

LINK LEVER M8

MIDDLE GEAR M8 –
LOADING GEAR(T) ASSY T

LOADING GEAR(S) ASSY T M8 (W8b) –
LOADING RING ASSY T M8 4(S8) See, Adjustment procedure for

FIG.

T

T
T

T
T

T

B

M3 4(S3a)

M3 (W3b) –

T

M4 2(S4b) –

T

T

M5 3(S5a) –
T
B

T

M6 –

T

T

M7 –
T

M7 3(S7) –

T

T

M8 (W8b) See, Adjustment procedure for

POINT CONDITION

Section 2.2.5

The function of this part varies according
to the ASSY (VHS/SVHS) which this
part is rporated in.

2(S6b), 2(S6c) *

, 8(S6d)

–
–

–
–

CATCHER

(Refer to part list.)

Section 2.2.5
See, Adjustment procedure for

Section 2.2.5

Section 2.2.5

Section 2.2.5

ADJUSTMENT

NOTE

(Refer to fig. 2-2-6)

–

–
–
–
–

Fig.2-2-1

2-22 (No.86700)

(S7)

[20]

11

21

(S5a)

34

(S7)

35

j

g

(W1a)

[2]

[31]

33

(S7)

h

x

[25]

y

(S6b)

22

(S6b)

14

(S5a)

15

(S5a)

13

(S5a)

[21]

16

(S5a)

12

(S5a)

[8]

(W2)

[9]

(P1)

(W2)

2

(S2a)

a

c

10

(S4a)

18

(S5b)

d

[19]

[12]

[22]

d

8

(S3a)

[11]

19

(S5c)

(W3a)

[17]

a

j

17

(S5b)

[28]

25

m

(S6d)

[23]

(W4)

[18]

AA

(S6d)

38

(S8)

31

[27]

(S6d)

26

n

28

(S6d)

[26]

36

(S8)

39

(S8)

m

32

27

(S6d)

30

(S6d)

37

(S8)

(S6d)

(S6d)

29

n

(W1a)

(W2)

[3]

[5]

[34]

[4]

(W8b)

[36]

(W1b)

[29]

(W8b)

[35]

(W8a)

b

(W1a)

[30]

[33]

[32]

1

(S1)

[1]

[7]

g

b

(W2)

[6]

[10]

23

(S6c)

3

(S3a)

4

(S3a)

5

(S3a)

6

(S3a)

x

(S6a)

[37]

h

y

[16]

[14]

c

(W3b)

7

(S3a)

(W3a)

(W3a)

9

(S3b)

24

(S6c)

[24]

20

[15]

(P3)

[13]

Fig.2-2-2

(No.86700)2-23

<TOP VIEW>

[31]

[37]

[25]

[26]

<BOTTOM VIEW>

[1]
[29]
[28]
[27]

[4]
[36]

[2]

[5]

[9]

[3]
[34]

Fig.2-2-3

[20]
[21]
[19]
[22]
[23]
[17]
[16]
[14]
[15]
[18]
[12]

[13]

[33][32][6][8][30][35][7]

NOTE:

In removing the ROTARY ENCODER,
please remove the BRACKET(MECHA).

2-24 (No.86700)

BRACKET (MECHA)

[11]

NOTE:

When reinstalling the cassette housing to
pay careful attention to the switch

Fig.2-2-4

not to damage it.

[24]

[10]

the set,

1

(S1)

[1]

(W1a)

[2]

(P1)

[4]

(W1a)

(W1a)

[3]

(W1b)

9

(S3b)

(P3)

[13]

[12]

7,8

(S3a)

[16]

(W3b)

[17]

(W3a)

(W3a)

[14]

(W3a)

[15]

[11]

(S2)

(W2)

[9]

2

[5]

(W2)

Fig.M1

[6]

(W2)

[7]

[8]

[18]

3

(S3a)

(S4a)

(W4)

10

4

(S3a)

5

(S3a)

Fig.M3

6

(S3a)

[19]

*

11

(S4b)

[10]

[20]

*

12

(S4b)

Fig.M2

* 0.118 N.m (1.2 kgf.cm)

Fig.M4

(No.86700)2-25

[22]

**

14,15

(S5a)

*

13

(S5a)

[21]

*

16

(S5a)

[31]

33,34,35

(S7)

17,18
(S5b)

* 0.118 N.m (1.2 kgf.cm)

21,22

Catcher

(S6b)

[28]

[27]

25,26
(S6b)

32

(S6b)

NOTE:
Refer to part list.

31

(S6b)

Fig.M5

(S5c)

27,28,29

(S6b)

19

[25]

[23]

30

(S6b)

[36]

36,37

(S8)

[29]

(W8b)

[30]

Fig.M7

38,39

(S8)

[37]

(W8a)

[32]

* 0.112 N.m (1.1 kgf.cm)

2-26 (No.86700)

23

(S6c)

24
(S6c)

Fig.M6

[26]

[24]

*

20

(S6c)

(W8b)

Fig.M8

[35]

[33]

[34]

2.2.4 CHECKUP AND ADJUSTMENT OF MECHANISM PHASE
NOTE:

Pay careful attention to the installing order and phase of mechanism parts of the loading system.

[37] LOADING RING ASSEMBLY
Align the two holes of the LOADING RING

[35] LOADING GEAR(T) ASSEMBLY
Align the hole of the LOADING GEAR
(T) ASSEMBLY to that of the MAIN

DECK hole.

[9] WEEL GEAR
Align one of the three holes of
WHEEL GEAR to MAIN DECK hole.

ASSEMBLY to those of MAIN DECK.

[33] LINK LEVER
Align the hole of the
LINK LEVER to MAIN
DECK hole.

[33] LINK LEVER/CONTROLL CAM

Align each one LINK LEVER
assembly hole and MAIN DECK hole
to the hole at the CONTROL CAM

position.

Align this part to each
“Triangle” mark.

MAIN DECK

Fig.2-2-5 Top of main deck

Align this part to each
“Triangle” mark.

REC SAFTY SW

S-CASS SW

CASS SW

Fig.2-2-6 Rotary encoder

(No.86700)2-27

2.2.5 SERVISE NOTE

Use the following chart to manage screws.

M8

2-28 (No.86700)

[10] [12] [20]

Symbol No. [1] [7] [13] [19] [21] [22] [23]

Place to stick screw

Removing order of screw12345678910111213141516171819

Reference dra wing (Fig. No.) M1 M2 M3 M4 M5

Screw tightening torque

[25] [26] [37]

Symbol No. [24] [31]

Removing order of screw 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39

Fig.2-2-7

Place to stick screw

Reference drawing (Fig. No.) M6 M7

Screw tightening torque

Pay careful attention to tightening t or que for each screw.

Torque setting value of torque driver is limited. At the values over the maximum torque setting value, fasten a screw manually

not to damage the screw thread.

<NOTE>