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– 5 –

1) Remove the screw 1 (P3

x

8)

2) Remove the shaft ground assembly 2.
3) Remove three screws 3 (P3

x

6).

4) Remove the drum assembly 4.

When attaching the drum assembly, be careful not to blur the
contacting surface with fingerprint or like.
When attaching the shaft ground assembly, be careful not apply force
to the spring section  of it.

When inserting the rotary upper drum assembly into the lower
drum, be careful not to blur the contacting surface with fingerprint
or like.

2) If it is difficult, mount the upper drum by shaking it gradually.

Be careful not to damage the head.  Make sure that the upper drum
is tightly inserted.

3) Tighten two screws 3 (PSW 3

x

8).

Temporary tighten two screws, After making sure that upper drum
is tightly inserted, tighten the screws.

2

 shaft ground assembly

1

 screw

     (P3x8)

3

 three screws

    (P3x6)

1) Remove the screw 1 (P3

x

8).

2) Remove the shaft ground assembly 2.
3) Completely remove the rotary upper drum board and desolder the soldering

indicated by the arrows. (16 points)

4) Remove the screws 3 (PSW 3

x

8) and tape out the rotary uppper drum

assembly in the direction of arrow. (See Fig. 3.)
If it is difficult, remove by shaking the rotary upper drum gradually.

If the drum can not be removed, check whether the solders have
been removed or mot again.

1) Mount the rotary upper drum assembly by aligning marked 

b with

marked      of rotary transformer board (lower drum) so that the screw
holes of both upper and lower drums match.

1

 screw

     (P3x8)

2

 shaft ground assembly

solders

solders

3

 two screws

    (PSW3x8)

rotary upper drum assembly
DZR-68-R

rotary transformer
board

4

 drum assembly

– 6 –

4) Solder 16 points on the rotary upper drum board. (See Fig. 2.)
5) Fix the shaft ground assembly 2 using the screw 1 (P3

x

8) so that the

protrusion of the shaft ground assembly end contacts the center of the
drum shaft, (See Fig. 2.)

When attaching the shaft ground assembly, be careful not to apply
force to the spring section of it.

6) Tighten the screw 1 (P3

x

8).

IV

In order to obtain the best perfotmance from this unit and make full use of its
capabilities, and to extend the life of the unit and tapes, it is recommended
that the following periodic checks and maintenance be performed.
•

The following must be done after every repair regardless of how many
hours the user has operated the machine.

1) Press a chamois cloth (Jig Ref. No. J-9) which has been dipped in cleaning

fludi (Jig Ref. No. J-8) lightly against the rotating drum assembly, then do
the cleaning by slowly rotating the rotating head disk by hand. (Never try
to clean by using the motor to turn it.)

2) Never try to clean by moving the chamois cloth at a vertical angle to the

head tip. There is a very great danger of damaging the head tip if this is
done.

1) Clean the surfaces which the tape contacts during its movement (tape guide,

drum assembly surface, capstan, pinch roller, etc.) with a chamois cloth
that has been dipped in cleaning fluid.

1) Clean the driving parts with a cloth that been dipped in cleaning fluid.

No. 2 guide
(TG2)

FE head

No. 1 guide
(TG1)

No. 0 guide
(TG0)

No. 3 guide
(TG3)

No. 4 guide
(TG4)

No. 5 guide
(TG5)

No. 6 guide
(TG6)

ACE head

No. 7 guide
(TG7)

No. 8 guide
(TG8)

capstan shaft

pinch roller

1-1

This section is extracted from

SL
V

-A

V100UX instr

uction man

ual.

1-2