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2-13

b

Main brake assembly (S)

(3) While releasing the claw of pinch plate, slide it backwards.
(4) While releasing the claw and rotating the guide arm assem-

bly by clockwise, remove the control cam.

1

(1) Remove the mechanism assembly. (Refer to Section 1. 1

“DISASSEMBLY OF MAJOR PARTS”.)

(2) Remove the sub brake assembly (T). (Refer to Section

2.3.16.)

(3) Remove the sub brake assembly (S). (Refer to Section

2.3.17.)

(4) Release the seven craws from the back of the mechanism

assembly, and take out the slide plate from the front surface
of the mechanism assembly.

(5) Remove the slit disk (S). (Refer to Section 2.3.24.)
(6) Take out the main brake assembly (T).
(7) While rotating the main brake assembly, take it out.

2

(1) Reassemble in the reverse order of removing.
(2) When mounting the rotary encoder, control cam or control

plate, set the phases of each part appropriately by referring
to the “How to mount the main parts”.  (Refer to Section
2.4.3 and Section 2.4.5.)

(4) Remove the slide plate.  (Refer to Section 2.3.23.)
(5) Take out the change lever assembly.
(6) While releasing the craws at both sides, take out the rotary

encoder.

2

(1) Reassemble in the reverse order of removing.
(2) When mounting the slide plate, set the phases of each part

appropriately by referring the “How to mount the main
parts”.  (Refer to Section 2.4.4.)

Craw

*1

Control cam

*1

Change 
lever  
assembly

Claw

*2 

Slide plate

*1

 When reassembling: 

     Refer to Section 2.4.3

*2

 When reassembling: 

     Refer to Section 2.4.4

Craw

Craw

* 

Rotary encoder

* 

Change lever assembly

Positioning 
mark

*

 When reassembling: Refer to Section 2.4.3

Craw

Craw

Craw

The back

*

Slide plate

Main brake assembly (T)

*

 When reassembling: Refer to Section 2.4.4

2-14

1

(1) Remove the reel disks (S, T), control plate and clutch units

(S, T).  (Refer to Section 2.3.10.)

(2) While releasing the take up head and tension arm lever (Re-

fer to Fig. 2-3-28 (2)), take out the slit disks (S, T).

1

(1) Remove the brush assembly and inertia roller.  (Refer to

Section 2.3.3.)

(2) Remove the reel disk (S), control plate and clutch unit (S).

(Refer to Section 2.3.10.)

(3) Remove the slit washer and remove the tension arm .
(4) Take out the take-up lever, tension arm lever and take-up

head.

(5) Remove the pole base assembly.  (Refer to Section 2.3.18.)

2

(1) Reassemble in the reverse order of removing.

Slit disk (S)

Slit disk (T)

Take up lever

Tension arm 
assembly

c

c

Slit washer
: 

Tension band 
assembly

Reel disk (S)

Clutch unit (S)

-32

M 4

Tension arm lever

Insert the pin of take up lever

Take up head

2-15

(6) Remove the five screws 

&

, and remove the guide rail by

releasing the craw.

(7) Take out the loading arm assemblies (S, T).

1

(1) Remove the clutch units (S, T), control plate and reel disks

(S,T).  (Refer to Section 2.3.10.)

(2) Remove the idler assembly.  (Refer to Section 2.3.15.)
(3) Remove the pole base assembly and guide rail.  (Refer to

Section 2.3.18 and 2.3.25.)

(4) Remove the screw 

&

 and remove the idler lever.

2

(1) Reassemble in the reverse order of removing.
(2) When mounting the loading arm assembly and control plate,

set the phases of each part appropriately by referring to the
“How to mount the main parts”.  (Refer to Section 2.4.1
and 2.4.5.)

(3) After replacing the parts, clean the pole base assemblies (S,

T), and check the following adjustments:
• Tape transport system check/adjustment.  (Refer to Sec-

tion 2.5.6.)

• Interchangeability adjustment.  (Refer to Section 2.5.)

(5) Remove the belt (capstan) from the pulley assembly.   (Re-

fer to Fig. 2-3-16.)

(6) Take out the pulley assembly.

2

(1) Reassemble in the reverse order of removing.
(2) When mounting the guide rail and control plate, set the

phases of each part appropriately by referring to the “How
to mount the main parts”.  (Refer to Section 2.4.2 and 2.4.5.)

Craw

Craw

Craw

Guide rail

: removed yet

: removed yet

* 

Loading arm 

   assembly 

(S, T)

17

17

17

17

17

*

 

When reassembling: Refer to Section 2.4.2

Draw up

Washer

Draw up

Idler lever

Pulley assembly

17

2-16

1

(1) Remove the control plate.  (Refer to Section 2.3.10.)
(2) Remove the control cam.  (Refer to Section 2.3.22.)
(3) Remove the guide arm assembly.  (Refer to Section 2.3.20.)
(4) Remove the pinch roller arm assembly.  (Refer to Section

2.3.6.)

(5) While releasing the craws, remove the pinch plate.

The mechanism used in this unit has a close relationship be-
tween the rotary encoder and the mechanism control circuit.
Therefore, the relationship between the rotary encoder and the
control cam determines all the operations of the mechanism
parts including the slide plate, loading arm assembly, control
plate and brake.  If these parts are no mounted at the correct
positions, loading/unloading operation will not be performed.
Mounting the main parts (mechanism phase adjustment) must
be performed at the mechanism assembly position in the same
way as in the previous section.

(1) Mount the loading arm assembly (S) and the loading arm

assembly (T) so that the positioning marks on both gears
come face to face with each other.

(2) After mounting the guide rail and setting the pole base as-

sembly at the tip of the arm, perform the unloading opera-
tion so that the pole base assembly returns to the forefront
position.

(3) Mount the peripheral parts around the guide rail.  (Refer to

Section 2.3.25.)

2

(1) Reassemble in the reverse order of removing.
(2) When mounting the control plate and control cam, set the

phases of each part appropriately by referring to the “How
to mount the main parts”.  (Refer to Section 2.4.3 and 2.4.5.)

(6) Remove the worm gear assembly by lifting the right side of

the worm gear assembly.

Pinch plate

Craw

Craw

Worm gear assembly

Positioning mark

(To pole base (S))

(To pole base (T))

Loading arm 
assembly (T)

Loading arm 
assembly (S)

Positioning mark