Toshiba SD-2550A, Service Manual

Page: 55 / 109

2-7
Screws (1)
Rear panel (2)
Fig. A
Gear (4) Triangle mark
Position of the line
Pickup mechanism
assembly
Gear (4)
The first tooth of the gear of
this side on the tray rack gear.
Tray (3)
Slider
Triangle mark Marking
Gear
Fig. B
2-2. PC Board Replacement
2-2-1. Main PC Board
Note:
• Before removing the main PC board (4), be sure to
short-circuit the laser diode output land.
After replacing, open the land as it was after inserting
the flexible cables (1).
1. Remove the top cover. (Refer to item 2-1-1.)
2. Eject the tray. (Refer to item 2-1-3.)
3. Remove four flexible cables (1) and remove one
connector (2).
4. Remove seven screws (3) and the main PC board (4).
Fig. 2-1-19
Screws (3)
Twist more than 9 times.
Connector (2)
Flexible
cable (1)
Tray
Flexible
cable (1)
Flexible
cables (1)
Screws (3)
Main
PC board (4)
Pickup head
Laser diode
output lands
• Confirm that the mark of the gear matches with the
triangle mark on the reverse side of the tray in the tray
close status. (The gear is rotated with the slider locks.)
(Refer to Fig. B.)
Fig. 2-1-17
2-1-5. Rear Panel
1. Remove six screws (1) and remove the rear panel (2).
Fig. 2-1-18