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1-6-11. Lower Cylinder Assembly inspection
and Replacement
<Inspection>
1.
Check if the tape transport surface on the lower
cylinder assembly is not damaged.
Nm
. Check if the rotation of the upper cylinder assembly is
not abnormal.
3. Check if the FPC on the rotary trans is not damaged.
When any abnormality is found under the inspection
described in the steps (1) to (3), replace the cylinder
assembly.
<Replacement>
1. Remove the cylinder assembly. (Refer to item "1-6-9.
Cylinder Assembly Inspection and Replacement".)
2. Remove two securing screws (1) and remove the
upper cylinder assembly (2).
3. Replace the lower cylinder assembly (3).
4, Mount the lower cylinder assembly in the reverse
order of removal taking care not to touch the video
head directly and damage the cylinder.
Note:
+ Take care not to deform the joint spring on the upper
cylinder assembly (2).
+ Refer to item "1-6-9. Cylinder Inspection and Re-
placement" for the treatment of the FPC.
5. Perform the tape transport adjustment according to its
procedures,
Screws (1)
Upper cylinder
assembly (2)
Lower cylinder
assembly (3)
Fig. 6-11-1
2-16
1-6-12. Cylinder Holding Plate Replacement
lL.
Remove screws (1) and (2) securing the cylinder
holding plate (3) and a screw (5) securing the cylinder
holding plate (4).
2. Remove the cylinder holding plate (3) and (4) sliding
in the direction shown by the arrow (B) and (A).
3. Eliminate the cylinder lock key (wedge shaped parts).
4. After replacing the cylinder holding plates (3) and (4),
mount new parts in the reverse order of removal.
Note:
« When remounting, fix the cylinder while pushing in
the direction shown by the arrow (A) and the cylinder
holding plate (3) in the direction shown by the arrow
(B). Then tighten three screws while pushing the
cylinder holding plate (4) toward the stopper on the
outsert of the mechanical deck.
Take care of the position inserting the FPC. (Refer to
item "1-6-9. Cylinder Assembly Inspection and
Replacement".)
Tightening order of the screws is (1) —» (2) — (5).
Tightening torque of the screws (1), (2), (5) is 294 -
392 mNem (3 ~ 4 kgecm). :
Take care of the position inserting the FPC when
mounting the cylinder holding plate (3). (Refer to item
"1-6-9. Cylinder Assembly Inspection and Replace-
ment".)
Head
ra cleaner
Screw (5)
Cylinder holding
plate (3
Cylinder holding
'Screw (1)
plate (4)
Screw (2)
Cylinder
lock key
7
we
Stopper
Cylinder assembly
Fig. 6-12-1
1-6-13. Slip Ring Assembly Replacement
L
i)
-&
WwW
Remove two connectors (2) (cylinder side and PC
board side) of the slip ring assembly (1).
Remove a screw (3).
. Remove the slip ring assembly (1) upward.
. After replacing the slip ring assembly (1), mount it in
the reverse order of removal.
Note:
.
.
.
°
.
Slip ring assembly
Wire holder
Connector (2)
(Cylinder side)
Take care of the connector (2) direction. (The wire
holder portion of the cylinder side connector (2) faces
to the center pole of the cylinder.)
Take care not to add force to the upper cylinder
assembly.
Take care not to deform the spring plate on the slip
ting assembly, because it is easily deformed.
After replacing, confirm no stack is found on the
connector lead wire on the PC board side. (If any slack
is found, remove the slack.)
When securing the screw (3), be sure to secure the rag
terminal together.
When mounting the slip ring assembly (1), first insert
the shaft into the center hole of the coupling.
When mounting and removing the cylinder side
connector, use tweezers.
Connector (2)
(PC board side}
Cylinder
1
<
L
4
-6-14. Head Cleaner Replacement
Roller sub assembly replacement>
Remove the roller sub cleaner assembly (2) pulling
upward from the hook (A) on the cleaner lever (1).
After replacing the roller sub assembly, mount in the
teverse order of removal.
<Cleaner lever replacement>
1.
nw
Undo the hook (B) of the cleaner lever (1) from the
mechanical deck, and pull out the cleaner lever (1)
upward.
. Replace the cleaner lever (1) on the roller sub assem-
bly (2), and mount the cleaner lever (1) in the reverse
order of removal.
Note:
* Take care the roller sub assembly (2) is not stained
with grease or oil.
Stopper rib (C)
s
Roiler sub assembly (2)
Hook (A)
Cieaner lever (1)
Hook (B)
Joint portion of
elastic spring
Mechanical
leck
Stopper (D)
Assist pin
Fig. 6-14-1
Note:
When remcunting the head cleaner, position the
stopper rib -C) in front of the stopper (D).
Cleaner -ever (1)
Stopper rib (C)
~
* Stopper (D)
Fig, 6-14-2
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