Pc Board Replacement; Main Pc Board; Power Pc Board - Toshiba SD-2550A Service Manual

1-2. PC Board Replacement

1-2-1. 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 1-1-1.)
2. Eject the tray. (Refer to item 1-1-2.)
3. Remove four flexible cables (1) and remove one
connector (2).
4. Remove seven screws (3) and the main PC board (4).
Twist more than 9 times.
Flexible
cable (1)
Tray
Pickup head
Laser diode
output lands
Fig. 2-1-7
Flexible
Connector (2)
cables (1)
Screws (3)
Main
PC board (4)
Flexible
cable (1)
Screws (3)

1-2-2. Power PC board

1. Peel off two tapes (1) and remove the connector (2).
2. Remove six screws (3) and remove the power supply
PC board (4).
Screws (3)
Screws (3)
Twist more than 9 times.
2-3
Power supply
PC board (4)
Tapes (1)
Connector (2)
Fig. 2-1-8