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TOSHIBA V 856 B.
Mechanical Adjustments
Cont'd
* For the cam slider mounting, refer to the notes
in item 1-6-41.
Mechanical deck
(Bottom side) ~__
Pa
Projection (A)
drive lever (1)
Fig. 6-28-1
1-6-29. Loading Drive Assembly Replace-
ment
1. Remove the F/L ground plate and the head
cleaner assembly. (Refer to item "1-6-14.
Head Cleaner Assembly Replacement'.)
2. Remove two flat cables (1) from the connec-
tors.
3. Pull out the portion (A) (No. 8 guide cap) from
the motor bracket (2).
4. Remove four claws (a), {b), (c), (d)} securing
the motor bracket in the order of (a) > (b) > (c)
> (d).
Flat cable (1) at
FL ground plate
Claw (a}
4
Portion {A}
(No.B guide cap)
Motor bracket (2)'
Fig. 6-29-1
Note:
« Remove the claw (a) inserting a driver.
« Remove the claws (b) and (c) pushing inside
previously and opening the claws slightly.
Claw
=a
|
—
Fig. 6-29-2
<Preparation for Loading drive assembly
mounting>
a) Confirm that the head cleaner assembly is
removed.
b) Confirm that the small hole b) on the cam
gear aligns with the hole on the mechanical
deck.
c) Confirm that the clearance between the pinch
lever assembly and the cam gear is approx.
0.3 mm. (Confirm that the pinch lever
assembly is correctly mounted on the groove
of the cam gear.)
d) Confirm that the clearance between the drive
lever and the cam gear is approx. 2 mm.
(Confirm that the drive lever is correctly
mounted on the groove of the cam gear.)
e) Confirm
that the
€ mark on the rotor of the
cam switch aligns with the A mark on the
motor bracket.
5. After completion above steps a) to e), mount
the !oading drive assembly. Push four claws
to the motor bracket in the order of (d)} > (c)} >
(b) > (a) and push the portion (A) (No. & guide
cap) into the motor bracket.
6. Confirm that the & mark on the rotor of the
cam switch aligns with that on the bracket
when the hole b) on the cam gear aligns with
the hole on the mechanical deck. If the
alignment of the A marks cannot be con-
firmed, remove loading drive assembly once
again and reinstall after confirming the above
steps a) to e).
7. Mount two flat cables.
8. Mount the F/L ground plate and the head
cleaner assembly.
Cam gear
Drive lever
Loading drive assembly bottom side
Fig. 6-29-3
1-6-30. Loading Motor Sub Assembly,
Cam Switch and Loading Drive Unit Replace-
ment
1. Remove the loading drive assembly. (Refer to
item °1-6-29. Loading Drive Assembly
Replacement".)
2. Remove the cleaner assist lever (1) from the
claw (A).
3. After removing the cleaner assist lever (1),
the worm wheel can be also removed upward.
4. Insert a slot-type screwdriver into the portion
(C) of the loading drive bracket (3) and push
the loading motor 2 - 3 mm lower. And push
the tip of worm gear from the portion (D) of
the loading bracket (3), then remove the worm
gear (4) from the claw (E).
5. Remove the cam switch (5) from the claw (F)
on the loading drive bracket (3) and pull out
the loading drive unit (7) and the worm gear
(4) simultaneously.
6
6. Replace the loading drive unit (7). When
mounting the PC boards of the cam switch (5)
and the loading drive unit (7), take care that
no clearance is allowed.
7. insert the loading drive unit (7) and the worm
gear (4) into the loading drive bracket (3).
8. Push the tip (G) of the worm gear (4) into the
claw (B) on the loading motor bracket. In this
process, take care not to bend the tip of the
worm gear with strong pressure.
8. Push the cam switch (5) into the claw (F) on
the ioading motor bracket.
10.Mount the parts in the reverse order of
removal.
Loading drive
Portion {C)
Worm
fo
wheel (2)
Claw (B)
Cam switch (5)
"Loading drive
unit {7}
Loading motor
/
sub assembly (6)%
Loading drive assembly (Bottom side}
Fig. 6-30-1
1-6-31.Cam Gear Replacement
1. Remove the loading drive assembly. (Refer to
item "1-6-29. Loading Drive Assembly
Replacement".)
2. Remove the cam slider. (Refer to item "1-6-
41. Cam Slider Replacement".)
3. Remove the drive lever. (Refer to item "1-6-
40. Drive Lever Replacement".)
4. Remove the pinch roller assembly. (Refer to
item "1-6-21. Pinch Assembly Replacement".}
5. Remove the cam gear.
6. Apply grease on a new cam gear on the
shaded portion as shown in Fig. 6-31-1 and
the shaft of the main base.
{a}
Apply grease to the shaded portion
eo
Fig. 6-31-1
7. Make the S. T slider to the slot out condition.
8. Push the cam lever (1) and the pin (2)
(ioading stider) in the direction shown by the
arrows (A) and (B).
9. Mount the cam gear at the angle which the
small hole (a) on the cam
gear aligns with the
hole on the mechanical deck. (Refer to Fig. 6-
31-1.)
Cylinder
Cam lever {1}
Hole for cam gear
7
'.
phase matching
;
'
/
nn
A
ee
a
Ee
ey
4
f/
a
\pin (2)
(Loading slider}
(Slot out mode)
No. 9 guide
Fig. 6-31-2
10.Mount the parts in the reverse order of
removal.
1-6-32.
S Reel Table Assembly and Washer 2
Replacement
1. Remove the top bracket and the cassette
holder assembly. (Refer to item "1-6-1. Top
Bracket Replacement and "1-6-2. Cassette
Holder Assembly Replacement".)
2. Remove the drive arm assembly. (Refer to
item "1-6-5. Drive Arm Assembly Replace-
ment".)
3. Remove the cam slider. (Refer to item "1-6-
41. Cam Slider Replacement".)
4. Remove the S$ soft brake and S main brake
assembly. (Refer to item "1-6-38. S Soft Brake
Replacement and 1-6-37. S Main Brake
Assembly Replacement".)
5. Remove the tension lever assembly. (Refer to
item "1-6-23. Tension Lever Assembly
Replacement".)
6. Remove the S reel table assembly (1) pulling
it out upward.
7. Remove the washer 2 (2).
8. After cleaning the reel shaft (3) with a
cleaning kit, insert a new washer 2 (2) to the
reel shaft (3) and apply a drop of oil to the
shaded portions (two locations) on the reel
shaft (3).
9, After replacing, mount the parts in the reverse
order of removal.
40.Confirm the reel torque using a torque
cassette.
Note:
* The washer 2 (2) can use repeatedly.
S reel table
assembly (1)
White
Washer 2 (2)
Apply oil.
~ Reel shaft (3)
Fig. 6-32-1
1-6-33. T Reel Table Assembly and Washer 2
Replacement
1. Remove the top bracket and the cassette
holder assembly. (Refer to item "1-6-1. Top
Bracket Replacement
and 1-6-2. Cassette
Holder Assembly Replacement".)
2. Remove the drive arm assembly. (Refer to
item "1-6-5. Drive Arm Assembly Replace-
ment".)
3. Remove the T soft brake and T main brake
assembly (Refer to item "!-6-41. Cam Slider
Replacement".}
4. Remove the T reel table assembly (1) puiling
it out upward.
5. Remove the washer 2 (2).
6. After cleaning the reel shaft (3) with a
cleaning kit, insert a new washer 2 (2) to the
reel shaft (3) and apply a drop of oil to the
shaded portions (two locations) on the reel
shaft (3).
7. After replacing, mount the parts in the reverse
order of removal.
8. Confirm the ree! torque using a torque
cassette.
T reel table
assembly (1)
Black
Washer 2 (2)
Apply oil.
Reel shaft (3)
Fig. 6-33-1
Note:
* Washer 2 (2) can use repeatedly.
4-6-34. Idle Arm Assembly Repiacement
(Center Gear Pulley, Idle Kick Lever Idle up/
down Lever)
1. Remove the mechanical deck from the main
PC board.
2. Remove the stop ring (1) turning over the
mechanical deck.
3. Remove the center gear pulley (2) lifting it
upward.
4. Remove the claw (A) on the idle kick lever (3)
moving and pulling it upward.
5. Remove the slit washer (4).
6. Remove the idle up/down lever (5) and the
idle arm (6) simultaneously from two claws (B}
on the mechanical deck.
7. After cleaning the center gear post (7) using a
cleaning kit, apply a few drops of oil to the
shaded portion on the center gear post.
8. Mount the parts in the reverse order of
removal.
Note:
* Stop ring (1) is impossible to use again.
« When mounting the parts, take care of the
notice shown in Fig. 6-34-2.
we Stop ring (1)
Idis kick
tavrer oN
Center gear
pulley (2)
Claw {A) -
Idle arm (8)
Idle up/down
jever (5) a
A
oil.
ee pply
Halding post
Holder center
post assembly
Idte
up/down lever (5}
that
ee
Insert the arm of the idle up/down
fever into the idle arm groove,
Fig. 6-34-2
1-6-35. Holder Center Post Assembly
Replacement
1. Turn over the mechanical deck and remove
the center gear pulley and the idle arm. (Refer
to item "1-6-34. Idle Arm Assembly Replace-
ment".)
2. Turn over the mechanical deck and remove
the top bracket and the cassette holder
assembly. (Refer to item "1-6-1. Top Bracket
Assembly Replacement and
1-6-2. Cassette Holder Assembly Replace-
ment".)}
3. Remove the drive arm assembly. (Refer to
item "1-6-5. Drive Arm Assembly Replace-
ment".)
4. After removing two screws (1), replace the
holder center post assembly (2).
5. After replacing, mount the parts in the reverse
order of removal.
, en
(1}
Holder center
post assembly (2}
Apply a few
drops of ol...
Fig. 6-35-1
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