Sony XR-4890 Service Manual ▷ View online
– 9 –
SUB PANEL, MECHANISM DECK (MG-25F-136)
MAIN BOARD, HEAT SINK
3
Connector
(CN351)
2
Sub panel
1
Three screws
(PTT2.6
×
8)
1
Three screws
(PTT2.6
×
8)
5
Screw
(PTT2.6
×
6)
6
Mechanism deck
(MG-25F-136)
4
Flexible flat cable
(CN301)
3
Two ground point
screws
5
Two screws
(PTT 2.6
×
8)
5
Two screws
(PTT 2.6
×
10)
1
Screw
(PTT2.6
×
8)
5
Screw
(PTT 2.6
×
8)
6
Heat sink
2
Rubber cap (25)
1
Two screws
(PTT2.6
×
8)
4
Main board
– 10 –
SECTION 3
ASSEMBLY OF MECHANISM DECK
Note:
Follow the assembly procedure in the numerical order given.
HOUSING
ARM (SUCTION)
1
Install the catch to the hanger.
7
Holder the hanger by bending the claw.
6
Fit projaction on
D
part.
4
Fit claw on
B
part.
5
Fit projection on
C
part.
2
Install the hanger onto
two claws of the housing.
3
Put the housing
under
A
part.
D
part
B
part
A
part
C
part
8
Hold the hanger by
bending the claw.
Hanger
Housing
2
Move the arm (suction) in the arrow
direction and fit on projection.
1
Fit the arm (suction) on the shaft.
Projection
– 11 –
LEVER (LDG-A) / (LDG-B)
GEAR (LDG-FT)
Shaft
A
Shaft
B
Shaft
C
1
Fit the lever (LDG-A) on
shafts
A
–
C
and install it.
3
Type-E stop ring 2.0
Shaft
B
Shaft
A
2
Fit the lever (LDG-B) on
shafts
A
and
B
and
install it.
4
Align hole in the gear (LDG-D)
with hole the lever (LDG-A)
5
Gear (LDG-FT)
6
Polyethylene washer
3
Move the lever (LDG-B)
in the arrow direction.
2
Tensiton spring (LD-1)
2
Tensiton spring (LD-2)
Gear (LDG-FB)
Lever (LDG-A)
Hole
Hole
Gear (LDG-D)
1
– 12 –
GUIDE (C)
2
Guide (C)
1
Three claws
3
Capstan/reel motor(M901)
2
Two precision screws
(P 2
×
2)
1
Belt
30
°
MOUNTING POSITION OF CAPSTAN/REEL MOTOR
(M901)
(M901)
Click on the first or last page to see other XR-4890 service manuals if exist.