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Mechanical Adjustments
Cont'd
3. When mounting the top bracket (1), move the
tip of the grip lever (3) on the cassette holder
assembly to the inclined portion of a
trapezoidal cam, and then mount the top
bracket (1).
Grip lever (3)
Fig. 6-1-2
Note:
* After remounting the top bracket (1), move the
cassette holder forward and backward, and
then confirm the claws of the lock lever (5)
catch completely the both left and right sides
of the stopper section (4) at the top bracket
(1)
Top bracket "\
Jel
@)
Stopper
section (4)
Ctaw of
lock jever (5)
Fig. 6-1-3
1-6-2. Cassette Holder Assembly Reptace-
ment
1. Remove the top bracket. (Refer to item 1-6-1.
Top Bracket Replacement"".)
2. The cassette holder assembly (1) is guided
along the guide grooves (2) with both left and
right bosses of the cassette holder assembly
(1). So first remove each side boss (3) on
both {eft and right sides of cassette holder
assembly (1) from the guide groove (2).
3. When the cassette hoider assembly (1) is set
at the EJECT position, the boss is located at
(a), SO move the boss from (a) to (b) and
remove the bosses on both left and right sides
simultaneously.
Cassette holder
Guide groove (2)
assembly (1)
on the mechanical deck
\
\
(b)
\
Cassette holder
/ assembly (1)
Fig. 6-2-1
Note:
The grip lever (4) on the cassette holder
assembly (1} may catch the trapezoidal cam on
the mechanical deck (2), so perform the work
lifting the grip lever in the direction
shown
by the arrow.
Cassette hoider
assembly (1}
Mechanical
Fig. 6-2-2
deck (2)
4. After removing the front side bosses (5) on
both left and right sides, remove the cassette
holder assembly (1) pulling to the front side.
5. When mounting the cassette holder assembly
(1), insert the front side bosses (5) to the U
shaped groove of the drive arm (6) and the
guide groove (2) on the mechanical deck
lifting the rear side of the cassette holder
assembly (1).
Guide groove (2}
f
Rear side boss (3}
Cassette holder
assembly (1}
Front side boss (5}
6. When mounting the rear side basses (3),
perform the reverse order of removal.
1-6-3. Door Open Lever Replacement
1. Release the lock lever (2) on the cassette
holder assembly (1) pressing in the direction
shown by the arrow.
Lock jever (2)
Lock lever (2)
eo
Cassette holder assembly {1}
Fig. 6-3-1
2. Move the cassette holder assembly (1}
slightly to the rear side.
3. Remove the claws (A) and (B) on the door
open lever (3) from the mechanical deck (4).
4. Match the boss on a new door open lever (3)
and the hole (C) on the mechanical! deck, and
then insert the claws (B) first and then (A) to
the mechanical deck (4).
Mechanical deck (4)
Hole (C}
Claw (A)
Claw ({B)
Fig. 6-3-2
5. Remount the cassette hoider assembly to the
position as it was.
1-6-4. Drive Lever Gear Replacement
1. Make the cassette holder assembly to the
slot-out (EJECT) position.
Note:
- In this condition, both mark holes on the F/L
drive slider (1) and the mechanical deck fit
with each other, also the hole of the boss on
the drive lever gear (2), the center of the gear
tooth and the marking line are in fine.
2. Move the claw of the drive arm (3) to the
direction of the arrow (A) and remove the
drive lever gear (2) upward.
F/L drive
slider {1}
Mark hoie
Drive lever gear {2)
Drive arm (3)
Fig. 6-4-1
3. When remounting the drive lever gear (2),
take care of the phase position (refer to the
note described above.) and mount in the
reverse order of removal.
1-6-5. Drive Arm Assembly Replacement
1. Remove the top bracket assembly. (Refer to
item "1-6-1. Top Bracket Replacement".)
2. Remove the cassette holder assembly. (Refer
to item "1-6-2. Cassette Holder Assembly
Replacement".)
3. Remove the door open lever. (Refer to item
"4-6-3. Door Open Lever Replacement.")
4. Remove the drive lever gear. (Refer to item
"1-6-4. Drive Lever Gear Replacement".}
5. Pull the REC-inhibiting lever slightly to the
front side, turn the drive arm assembly (1) to
the front side and push it in the direction
shown by the arrow. Remove the left side
boss (2) on the drive arm assembly (1) from
the cutout of the guide groove on the
mechanical! deck (3).
6. Remount the drive arm assembly (1) in the
reverse order of removal.
ry Drive arm assembly (1)
Drive arm assembly (1)
Cutout of the
Fou groove
Fig. 6-5-1
1-6-6. Cam Lever Replacement
1. Remove the top bracket. (Refer to item "1-6-
1. Top Bracket Replacement'.)
2. Remove the cassette holder assembly. (Refer
to item "1-6-2.
Cassette Holder Assembly
Replacement".)
3. Remove the cam slider. (Refer to item "1-6-
41. Cam Slider Replacement".)
4. Remove the loading drive assembly. (Refer to
item "1-6-29. Loading Drive Assembly
Replacement".)
5. Remove the drive lever. (Refer to item "1-6-
40". Drive Lever Replacement".)
6. Remove the pinch roiler assembly. (Refer to
item "1-6-21. Pinch Roller Assembly Replace-
ment".}
7. Remove the cam gear. (Refer to item "1-6-31.
Cam Gear Replacement".}
8. Move the cam lever (1) until it stops in the
direction shown by the arrow (A). Pull out the
cam lever (1) lifting up straightly at the
position where the cam lever (1) stops.
9. Apply grease to the portions of bosses {A) to
(C) on a new cam lever.
Note:
* Confirm that the boss (A) on the cam lever (1)
is inserted into the hole on the F/L drive slider
(2).
+ After inserting the cam lever (1), confirm that
the cam fever (1) moves smoothly.
10.Replace the cam Jever in the reverse order of
removal.
Cam lever (1}
Boss (A)
(Apply grease.)
F/L drive
slider (2)
Boss {C) {Apply grease.}
Boss (B) {Apply grease.)
Fig. 6-6-1
1-6-7. F/L Drive Slider Replacement
1. Remove the top bracket. (Refer to item "1 -6-
1. Top Bracket Replacement".)
2. Remove the cassette holder assembly. (Refer
to item
1-6-2. Cassette Holder Assembly Replace-
ment".)
3. Remove the cam slider. (Refer to item "1-6-
41. Cam Slider Replacement".)
4. Remove the loading drive assembly. (Refer to
item 1-6-29. Loading Drive Assembly
Replacement.)
5. Remove the drive lever. (Refer to item "1-6-
40. Drive Lever Replacement".)
6. Remove the pinch roller assembly. (Refer to
item 1-6-21. Pinch Roller Assembly Replace-
ment".)
7. Remove the cam gear. (Refer to item "1-6-31.
Cam Gear Replacement".)
8. Remove the cam lever. (Refer to item "1-6-6.
Cam Lever Replacement'.)
9. Remove the drive lever gear. (Refer to item
"1-6-4. Drive Lever Gear Replacement".)
10.Push the F/L drive slider (1) in the direction
shown by the arrow (A) and slide it. Further-
more, pull out it to the front side lifting it in the
direction shown by the arrow (B).
11.Apply grease to the shaded parts (a) to (d)
on a new F/L drive slider (1).
Note:
For the phase alignment of the drive lever gear,
refer to item "1-6-4. Drive Lever Gear Replace-
ment".
12.Replace the F/L drive slider (1) in the reverse
order of removal.
Note:
After completion of the replacement, confirm
that the F/L drive slider (1) moves smoothly.
F/L drive stider (1)
Fig. 6-7-1
1-6-8. Arm Brake Lever Assembly and Arm
Brake Torsion Spring Replacement
1. Make the cassette holder assembly to the
slot-out (EJECT) position.
2. Turn the arm brake lever assembly (1) in the
direction shown by the arrow (A) until it stops.
Pull out the arm brake lever assembly (1) to
the front at the position it stops.
Note:
Take care that the arm brake torsion spring (2)
is removed forcefully.
Arm brake
Daa
spring {2}
Groove on the
mechanical! deck
Arm brake fever
assembly {1}
Fig. 6-8-1
3. Hook the arm brake torsion spring (2)
temporarily to a new arm brake lever
assembly (1).
Note:
Take care of the direction of the arm brake
torsion spring (2) so that the longer end of the
arm brake torsion spring (2) is hooked on the
temporary
hook.
eupoely
_~ Temporary hook
Arm brake torsion
spring (2}
oe
brake lever
assembly (1)
as
Fig. 6-8-2
4. Insert the hook portion on the arm brake lever
assembly (1) to the cutout on the mechanical
deck.
5. Turn the arm brake lever assembly (1)
counterclockwise and fix it at the position
which the arm brake lever assembly (1) faces
to the straight below.
6. When pushing the tip of the arm brake torsion
spring (2) located at (B) position, the tip is
removed from the temporary hook and moves
to the hook on the mechanical (leek.
7. The arm brake lever assembly tums to the
specified position by force of the arm brake
torsion spring.
Groove on the mechanical deck assembly
Arm brake
Arm brake lever
torsion spring (2)
assembly (1}
Fig. 6-8-3
1-6-9.Cylinder Assembly Inspection and
Replacement
<Inspection>
1. Check if the tape transport surface on the
lower cylinder assembly are not damaged.
2. Check if the rotation of the upper cylinder
assembly is not abnormal. When any
abnormality is found according to the
inspection procedures described above 1 and
2, replace the cylinder assembly.
<Replacement>
1. Remove the ground brush assembiy.
2. Remove the head cleaner. (Refer to item "1-
6-14. Head Cleaner Replacement.")
3. Remove the FPC (1) on the Preamplifier.
4. Remove three screws (2) and the cylinder
holding plate (3) and (4). (Refer to item "1-6-
12. Cylinder Holding Plate Replacement".)
5. Remove the cylinder assembly (5).
6. Remount the cylinder assembly (5) in the
reverse order of removal. Fix the cylinder
pressing slightly in the direction shown by the
arrow (A) and the cylinder holding plate (3)
pressing slightly in the direction shown by the
arrow (B). (Tightening torque: 294-392 mNem
(3 - 4 kg*cm))
Continues Next Page ...
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