JVC TH-M508 Service Manual page 17

3.3.2 Removing the DVD servo board
(See Figs.6 to 8)
• Prior to performing the following procedures, remove the tray
assemblies.
(1) From the topside of the DVD changer mechanism assem-
bly, solder the short-circuit points d on the DVD pick up.
(See Fig.6)
Caution:
Solder the short-circuit points d on the DVD pickup be-
fore disconnecting the flexible wire extending from the
DVD pickup. If you do not follow this instruction, the DVD
pickup may be damaged.
(2) From the bottom side of the DVD changer mechanism as-
sembly, disconnect the card wires from the connectors
CN201 and CN451 and the wires from the connectors
CN452 and CN453 on the DVD servo board. (See Fig.7)
(3) Remove the two screws B attaching the bracket to the DVD
changer mechanism assembly, and reverse the DVD servo
board. (See Fig.7)
(4) From the reverse side of the DVD servo board, disconnect
the card wire from the connector
the arrow 1 on the DVD servo board. (See Fig.8)
(5) Take out the DVD servo board.
Caution:
Unsolder the solders from the short-circuit points d after reas-
sembling.
Reference:
When connecting the card wire to the connector CN201, let the
wire through the slots e.
3.3.3 Removing the switch board
(See Fig.7)
(1) From the bottom side of the DVD changer mechanism as-
sembly, disconnect the wires from connectors
CN453 on the DVD servo board.
(2) Remove the screw C attaching the switch board to the DVD
changer mechanism assembly.
(3) Release the wires from the slots f of the switch board.
Caution:
When reassembling, let the wires through the slots f of the
switch board.
CN101 in the direction of
CN452 and
Short circuit points d
DVD changer mechanism assembly
Fig.6
DVD changer mechanism assembly
Card
wire
B
CN451
B
CN201
Fig.7
DVD changer mechanism assembly
DVD servo board
1 1
Fig.8
DVD pickup
CN452
CN453
DVD servo board
Switch board
C
Slot f
Slot e
Card wire
CN101
Card wire
(No.MB294)1-17