Sony SLV-E420CP / SLV-E420VC / SLV-E520CP / SLV-E520UX / SLV-E520VC Service Manual ▷ View online
5-18
3-12.REEL DRIVE MECHANISM
3-12-1. REEL BELT, REEL PULLEY, FRICTION
GEAR ASSEMBLY AND CLUTCH CHANGE
LEVER (See Fig. 3-12-1)
LEVER (See Fig. 3-12-1)
1) Refer to section 3-2 and remove the mechanism unit.
2) Remove the reel belt
2) Remove the reel belt
1
from the reel pulley
2
.
3) Take off the washer
3
and remove the reel pulley
2
.
4) Take off the washer
4
and remove the friction gear
assembly
5
.
5) Remove the clutch change spring
6
.
6) Remove the clamp
7
gripping the top of the mecha-
nism chassis, then remove the clutch change lever
8
.
ASSEMBLY NOTES:
1. After cleaning the shafts
9
and
0
, apply a drop of oil
(VHJ-0099) to each.
2. Be careful not to get any grease on the reel belt
1
.
1
Reel belt
3
Washer
2
Reel pulley
8
Clutch change lever
4
Washer
5
Friction gear
assembly
9
Shaft
0
Shaft
7
Clamp
6
Clutch change
spring
Fig. 3-12-1
3-12-2. CLUTCH MOUNTING ASSEMBLY
(See Fig.3-12-2)
1) Refer to section 3-3-1 and remove the cassette mecha-
nism assembly.
2) Refer to section 3-12-1 and remove the reel pulley.
3) Remove the two screws
3) Remove the two screws
1
, then remove the clutch
mounting assembly
2
.
ASSEMBLY NOTES:
1. Align the two holes 3 with the shafts
4
and
5
. Be
careful not to press part A of the clutch mounting
assembly
assembly
2
against the band brake assembly.
2. After assembly, make sure that the clamp on the clutch
change lever has snapped into the chassis.
1
Screws
3
Hole
2
Clutch
mounting
assembly
assembly
5
Shaft
4
Shaft
3
Hole
Part A
Fig. 3-12-2
3-12-3. S SOFT LEVER, SUPPLY REEL ASSEM-
BLY AND S REEL GEAR (See Fig. 3-12-3)
1) Remove the S soft spring
1
.
2) Remove the clamp
2
, then remove the S soft lever
3
.
3) Refer to section 3-12-2 and remove the clutch mounting
assembly.
4) Refer to section 3-11 and remove the band brake
assembly, then remove the supply reel assembly
4
and
the S reel gear
5
.
ASSEMBLY NOTES:
1. After cleaning the shafts
6
and
7
, apply a drop of oil
(VHJ-0099) to each.
2. After assembly, clean the side of the supply reel assem-
bly
4
.
7
Shaft
6
Shaft
5
S reel
gear
4
Supply reel
assembly
3
S soft lever
2
Clamp
1
S soft
spring
Fig. 3-12-3
5-19
3-12-4. T SOFT BRAKE ASSEMBLY, TAKE UP
REEL ASSEMBLY, T REEL GEAR
(See Fig. 3-12-4)
(See Fig. 3-12-4)
1) Remove the T soft spring
1
.
2) Remove the clamp
2
, then remove the T soft brake
assembly
3
.
3) Refer to section 3-12-2 and remove the clutch mounting
assembly.
4) Pressing the T brake assembly
4
in the direction of the
arrow, remove the take up reel assembly
5
and the T
reel gear
6
.
ASSEMBLY NOTE:
1. After cleaning the shafts
7
and
8
, apply a drop of oil
(VHJ-0099) to each.
6
T reel gear
5
Take up reel
assembly
1
T soft
spring
3
T soft brake
assembly
4
T brake
assembly
2
Clamp
8
Shaft
7
Shaft
Fig.3-12-4
3-13. BRAKES
3-13-1. S BRAKE ASSEMBLY, T BRAKE ASSEM-
BLY, T BRAKE ACT SLIDE (See Fig. 3-13-1)
1) Refer to section 3-3-1 and remove the cassette mecha-
nism assembly.
2) Remove the two clamps
1
, then remove the T brake
act slide
2
. (Note: You can remove the S brake assem-
bly
7
and the T brake assembly
5
without removing
the T brake act slide
2
.)
3) Remove the brake spring
3
.
4) Remove the two clamps
4
simultaneously, then remove
the T brake assembly
5
.
5) Remove the clamp
6
, then remove the S brake assem-
bly
7
.
ASSEMBLY NOTES:
1. Apply grease (VHJ-0100) to the shafts
8
and
9
.
2. When fitting the T brake act slide
2
, align the mark
0
with the shaft
!¡
.
6
Clamp
3
Brake spring
1
Clamp
0
Mark
2
T brake act slide
1
Clamp
!¡
Shaft
8
Shaft
4
Clamps
9
Shaft
7
S brake
assembly
5
T brake
assembly
Fig. 3-13-1
5-20
3-13-2. BRAKE CONTROL LEVER AND BRAKE
ACT LEVER ASSEMBLY (See Fig. 3-13-2)
1) Refer to section 3-2 and remove the mechanism unit.
2) Refer to section 3-15 and remove the wheel gear 2.
3) Refer to sections 3-12-1, then remove the reel belt and
2) Refer to section 3-15 and remove the wheel gear 2.
3) Refer to sections 3-12-1, then remove the reel belt and
the reel pulley.
4) Remove the clamp
1
, then remove the wheel gear 1
2
.
5) Remove the clutch change spring
3
.
6) Remove the clamps
4
and
5
, then remove the brake
control lever
6
. Remove the clamp
4
on the topside of
the mechanlsm chassis.
7) Remove the brake return spring
7
.
8) Refer to section 3-8 and remove the worm gear assem-
bly.
9) Remove the clamp
8
and clamp
5
, then remove the
brake act lever assembly
9
. To maintain the perfor-
mance of the brake act lever assembly
9
, do not
disassemble it.
ASSEMBLY NOTES:
1. Apply grease (VHJ-0100) to the shafts
0
and
!¡
, to the
teeth of the wheel gear 1
2
. and to the pin
!™
of the
brake control lever
6
.
2. Put the pin
!£
of the brake control lever
6
into the cam
groove
!¢
of the crescent slide.
3. Before fitting the wheel gear 1
2
, align the hole
!∞
with
the hole
!§
on the mechanism chassis.
4. Refer to section 3-15 and align the wheel gear 2.
!£
Pin
!™
Pin
6
Brake control lever
8
Clamp
5
Clamp
0
Shaft
!¡
Shaft
!§
Hole
4
Clamp
!∞
Hole
1
Clamp
2
Wheel
gear 1
3
Clutch change
spring
9
Brake act
lever assembly
7
Brake return
spring
!¢
Cam
groove
Fig. 3-13-2
3-13-3. S BRAKE ACT SLIDE AND BT SPRING
LEVER ASSEMBLY
(See Figs. 3-13-3 and 3-13-4)
(See Figs. 3-13-3 and 3-13-4)
1) Refer to section 3-16 and remove the crescent slide.
2) Refer to section 3-12-1 and remove the friction gear
2) Refer to section 3-12-1 and remove the friction gear
assembly.
3) Slide the S brake act slide
1
in the direction of the
arrow
A
, then remove it.
4) Refer to section 3-11 and remove the BTspring.
5) Press the BTspring lever assembly
5) Press the BTspring lever assembly
2
until it touches
the pin
3
, then remove it.
ASSEMBLY NOTES:
1. Apply grease (VHJ-0100) to the shaft
4
shown in Fig.
3-13-3, and to the BT spring lever assembiy
2
and the
S brake act slide
1
shown in Fig. 3-13-4.
2. After mounting the BT spring lever assembly
2
on the
Shaft
4
, hook the BT spring onto the clamp
5
and
press it until it touches the pin
6
.
3. Make sure that the clamps
7
,
8
and
9
have snapped
Into the S brake act slide
1
. Align the arrow
0
on the
S brake act slide
1
with the arrow
!¡
on the mecha-
nism chassis.
5
Clamp
!¡
Arrow on mechanism chassis
1
S brake act slide
7
Clamp
9
Clamp
8
Clamp
3
Pin
6
Pin
A
4
Shaft
0
Arrow
2
BT spring
lever
assembly
assembly
Fig. 3-13-3
Apply grease
Apply grease
Apply grease
2
BT spring
lever
assembly
1
S brake
act
slide
Fig. 3-13-4
5-21
3-14.GUIDES
3-14-1. GUIDE ROLLER ASSEMBLY
(See Fig. 3-14-1)
1) Unscrew the two screws
1
. When you do this, be
careful not to damage the cylinder or the video head.
2) Remove the two guide roller assemblies
2
by unscrew-
ing them anticlockwise.
ASSEMBLY NOTES:
1. Tighten the two screws
1
to a torque of 600 g/cm. After
tightening, apply a screw-locking glue.
2. After replacing the parts, be sure to clean the guide
roller and carry out tape path adjustment as described
in section 4-3.
in section 4-3.
1
Screw
1
Screw
2
Guide
roller
assembly
2
Guide
roller
assembly
Fig. 3-14-1
3-14-2. S AND T INCLINE MOUNTING
ASSEMBLIES (See Fig. 3-14-2)
1) Refer to section 3-2 and remove the mechanism unit.
2) Refer to section 3-4 and remove the cleaner lever.
3) Remove the four screws
2) Refer to section 3-4 and remove the cleaner lever.
3) Remove the four screws
5
and take off the two catcher
mountings
6
.
4) Refer to section 3-1 and rotate the loading motor in the
PLAY direction until tape loading is completed.
5) Shift the S incline mounting assembly
1
slightly, in the
direction of the arrow
A
, then remove it from the S load
lever assembly
2
.
6) Shift the T incline mounting assembly
3
slightly, in the
direction of the arrow
B
, then remove it from the T load
lever assembly
4
.
ASSEMBLY NOTES:
1. Apply grease (VHJ-0100) to the rail (top, underside and
sides) on the mechanism chassis.
2. When fitting the S and T incline mounting assemblies
1
and
3
into the rail, turn the loading motor manually in
the EJECT direction. When tape unloading begins,
watch out in case the S and T incline mounting assem-
blies
watch out in case the S and T incline mounting assem-
blies
1
and
3
get caught in the rail.
3. Aline the dowels on the catcher mounting
6
with the
holes
7
in the mechanism chassis.
4. After repiacing the parts, clean the cylinder and the
roller guide, then adjust the tape path as described in
section 4-3.
section 4-3.
B
A
1
S incline mounting
assembly
4
T load lever
assembly
2
S load lever
assembly
Apply grease to the top,
underside and side of the rail.
underside and side of the rail.
7
Holes
6
Catcher
mounting
5
Screws
5
Screws
7
Holes
3
T incline
mounting
assembly
Fig. 3-14-2
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