Toshiba SD-520ESE Service Manual page 91

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 six flexible cables (1) and remove one
connector (2).
4. Remove four screws (3), then remove the main PC
board (4).
Twist more than 9 times.
Flexible
cable (1)
Tray
Pickup head
Laser diode
output lands
Pickup A
Fig. 2-1-7
Flexible
cables (1)
Connector (2)
Screws (3)
Flexible
cables (1)
Main
Flexible
PC board (4)
cable (1)
Pickup head
Laser diode
output lands
Pickup B
1-2-2. Output PC Board
1. Remove the top cover. (Refer to item 1-1-1.)
2. Peel off three tapes (1) and remove the connector (2).
3. Remove three flexible cables (3).
4. Remove one screw (4), then remove the lug lead wire
(5).
5. Remove seven screws (6), then remove the output PC
board (7).
Connector (2)
Twist more than 9 times.
Fig. 2-1-8
Flexible
cable (3)
Tapes (1)
Screws (6)
Flexible
cables (3)
Screw (4)
Lug lead
Output
wire (5)
PC board (7)
Screws (6)