JVC PC-X290 Service Manual page 40

3.2.2 Removing the LED board / main board (See Fig.2 to 16)
• Prior to performing the following procedure, remove the CD as-
sembly section.
Caution:
Make sure to solder the short-circuit point on the CD servo
board before disconnecting the card wire from connector
on the main board and from the CD servo board. If you
CN301
don' t observe this instruction, the pickup may be damaged.
(1) Remove the two screws H attaching the LED board.
(2) Remove the three screws J attaching the main board.
(3) Push each tab of the main board inward and remove the
main board.
(4) Move the main board and the LED board as shown in
Fig.14, and solder the short-circuit point on the CD servo
board inside the CD assembly section.
(5) Disconnect the card wire from connector
main board.
(6) Disconnect the wire from the door switch at the bottom of
the CD assembly section.
Caution:
When reassembling the main board, make sure to unsolder
the short-circuit point after connecting the card wire to connec-
tor CN 301 and the CD servo board.
1-6 (No.MB200)
CN301 on the
LED board
CD assembly sectionav
H
LED board Main board
Fig.12
Main board
Tab
Fig.13
H
J