Toshiba SD-2300, Service Manual

Page: 96 / 160

1-3-6. Gear B Assembly, Gear A and Rack Gear
Assembly
<Removal>
1. Remove one screw (1) and remove the gear B assembly
(2).
2. Remove the gear A (3).
3. Remove one screw (4) and remove the rack gear
assembly (5).
Fig. 2-1-20
<Mounting>
1. When mounting, perform the reverse order of the
removal.
2. Mount the gear B assembly (1) by pushing the pickup
head (5) to the disc motor side (arrow A direction) and
shifting the upper gear of the rack gear assembly (4) in
the arrow B direction. (Refer to Fig. 2-1-21.)
3. Fit the positioning holes on the upper gear and lower
gear of the gear B assembly (1) and mount on the
pickup mechanism assembly with the phase matched.
At this time, note that the phase of the gear B assem-
bly (1) and the gear A (2) shows the status in the Fig.
2-1-22.
Rack gear assembly (4)
Gear A (2)
Gear B assembly (1)
Positioning holes
Pickup Head (5)
A
B
Pickup mechanism
assembly
Fig. 2-1-21
Note:
• Mount the gear B assembly (1) and the gear A (2) with
their gear teeth placed more than one tooth at least
inside the shaded portion.
Fig. 2-1-22
Gear B assembly (1)
Rack gear assembly (4)
Gear A (2)
Within the position shown
by the shaded porition.
Innermost position
of pickup head
Screw (4)
Screw (1)
Rack gear
assembly (5)
Gear A (3)
Gear B assembly (2)
Pickup mechanism
assembly