JVC CH-X1500 Service Manual page 20

CH-X1500
2.5.8 Pickup replacement procedure (See fig.49~55)
(1) Remove the bottom cover, front panel and top cover of the
exterior section.
(2) Remove the card wire from the connector CN604 on the
mechanism board.
(3) Rotate the rear slider and third gear in the lifter section
counterclockwise and then the traverse mechanism as-
sembly is move in the lowermost (bottom) position.
(4) Unsolder the two wires (black and brown) connected to the
tray motor.
(5) Remove the two screws K from the round holes on the
chassis (R) assembly to remove the lifter bracket (L).
(6) Remove the lower rod.
(7) Unsolder the two wires (blue and white), two wires of spin-
dle motor (red and black) and wire of tray motor (brown
and black) soldered on the mechanism board.
(8) Solder the sorting round point on the pickup assembly to
move the mechanism board and then unplug the flexible
wire from CN603 on the mechanism board.
(9) Remove the flexible wire from the connector CN603 on the
mechanism board.
(10) Remove the three screws M from the round hole on the
chassis (R) assembly, and remove.
(11) Remove the screw O attaching pickup shaft holder, and
remove the pickup assembly.
CAUTION:
When replacing the pickup, be sure to apply counter-
measures against static electricity (grounding the oper-
ation table, wrist band and soldering iron). To remove
it, first sorting round point on the mechanism board, then
lift the mechanism board assembly with CN603 con-
nected. Next, sorting round point on the pickup main
unit, then unplug the pickup flexible board from connec-
tor CN603.
ATTENTION:
When reassembling, perform in the reverse order.
(12) Remove the two screws P attaching lack arm. Pull out the
feed slide shaft assembly. Remove the screw Q attaching
shaft holder.
(13) When mounting the lifter bracket after replacing the pick-
up, move the lifter unit lever approx. 30mm towards the in-
side and then mount the lifter bracket.
Main board
K
Tray motor assembly
1-20
Third gear
Lifter bracket(L)
Unsolder
Feed motor
CN604
Fig.49
M
Mechanism board
Pickup
Pickup
K
Lack arm
Unsolder
CN603
Fig.50
Spindle motor Shaft holder
Pickup assembly
Fig.51
Flexible wire
Soting round point
Fig.52
Q
Spring
Feed slide shaft assembly
P
Fig.53
M
O