Mitsubishi Electric DD-6000 Service Manual page 23

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. Remove six flexible cables (1) and remove one
connector (3).
3. Remove four screws (2).
4. Release two claws and remove the main PC board (4).
Note:
• When mounting, be sure to twist the wire for the
connector (3) several times.
Pickup head
Laser diode
output land
Flexible
cables (1)
Fig. 2-1-9
Screws (2)
Main PC board (4)
Connector (3)
Flexible
cables (1)
Claws
Twist more than 7 times.
1-2-2. Output PC Board
1. Remove the rear panel. (Refer to item 1-1-4
2. Peel off the tape (1).
3. Remove the connector (2).
4. Disconnect two flexible cables (3).
5 Remove the wire part of the connector (5) from the
binding band (4).
6. Remove three screws (6) and remove the output PC
board (7).
Note:
• When mounting, keep the wire part of the connector
(5) with the banding band (4).
Twist more than 9 times.
Output PC board (7)
Tape (1)
Connector (2) Connector (2)
Connector (5)
2-4
Binding band (4) Screws (4)
Screws (6)
Output
PC board (6)
Tape (3)
Flexible cables (1)
Flexible cables (3)
Fig. 2-1-10
Screws (5)