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3.
HOW TO REPLACE A ROTARY
UPPER DRUM
UPPER DRUM
3-1.
HOW TO REMOVE A ROTARY UPPER DRUM
1)
Remove screw 1 (+P3
×
8) and remove the ground shaft
assembly 2. (Refer to Fig. 4.)
2)
Remove soldering which is marked by arrow and remove the
rotary upper drum board completely.
rotary upper drum board completely.
3)
Remove two screws 3 (PSW3
×
8) and remove the rotary upper
drum in the direction of A. (Refer to Fig. 5.)
If removal is difficult, remove it while rotating it slowly.
If removal is difficult, remove it while rotating it slowly.
Note:
If removal is difficult, check again if soldering is removed
completely.
completely.
Fig. 4
3-2.
HOW TO ATTACH A NEW ROTARY UPPER
DRUM
DRUM
1)
Pay attention so that finger print or like must not be put when
inserting a new upper drum into lower drum.
inserting a new upper drum into lower drum.
2)
Align
mark of the rotary upper drum board with the
mark of the rotary transformer board so that the screw hole on
the upper drum and that on the lower drum are aligned. (Refer
to Fig. 5.)
the upper drum and that on the lower drum are aligned. (Refer
to Fig. 5.)
3)
If attaching is difficult, attach a upper drum while rotating it
slowly.
slowly.
Note:
Pay attention not to damage the video heads.
Confirm that the upper drum is inserted completely.
Confirm that the upper drum is inserted completely.
4)
Tighten the two screws 3 (PSW3
×
8). (Refer to Fig. 5.)
5)
Fix the earth shaft 2 by tightening the screw 1 (+P3
×
8) so
that protrusion at the tip of the earth shaft contacts the center
of the drum shaft.
of the drum shaft.
Note:
When attaching the ground shaft assembly 2, never give
force to the plate spring 4.
force to the plate spring 4.
Fig. 5
1
Screw (+P3
×
8)
2
Ground shaft assembly
Drum when viewed
from the top
from the top
Soldering
4
Plate
spring
Soldering
3
PSW3
×
8
Upper drum assembly
DZR-68A-R
(8-848-625-02)
DZR-68A-R
(8-848-625-02)
Align the two arrow marks.
A
Lower drum assembly
DZL-51B/J-RP (8-848-666-11)
DZL-51B/J-RP (8-848-666-11)
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