JVC CH-X200, Руководство по обслуживанию

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1
Third Gear
Main PCB
Assembly
Feed Motor
Assembly
1
2
2
2
3
CN502
CN501
Unsolder
Lifter Bracket (L)
Fig. 49
Fig. 50
Tray Motor
Assembly
Unsolder
Traverse
Mechanism
PCB Assembly
Grounding Point
Fig. 51
Pickup Assembly
Shaft Holder
Spindle Motor
Pickup Replacement Procedure
Note: When replacing the pickup, be sure to
apply countermeasures against static
electricity (grounding the operation table,
wrist band and soldering iron). To remove
it, first short-circuit the grounding point on
the mechanism PCB, then lift the
mechanism PCB assembly with CN501
connected. Next, short-circuit the
grounding point on the pickup main unit,
then unplug the pickup flexible PCB from
connector CN501.
When reassembling, perform in the reverse order.
1. Remove the bottom cover, front panel and top cover
from the exterior section.
2. Unplug the flexible ribbon wire from connector CN502
on the traverse mechanism PC board assembly.
3. Turn the rear slider and third gear in the lifter section
counterclockwise until the traverse mechanism
assembly is in the lowermost (bottom) position.
4. Unsolder the two wires (black and brown) connected
to the tray motor.
5. Remove the two screws (1) from the round holes on
the chassis R assembly to remove the lifter bracket
(L).
6. Remove the lower rod.
7. Short-circuit the grounding point on the traverse
mechanism PCB assembly of the lifter unit. Unsolder
the wires connected to the spindle motor (red, black)
and to the feed motor (blue, white) to lift the PCB
assembly.
Next, short-circuit the grounding point on the pickup
main unit and unplug the pickup flexible PCB from
CN501.
8. Remove the three fixing screws (2) from the round
holes on the chassis R assembly to remove the
traverse mechanism PCB assembly.
9. Remove the pickup shaft holder fixing screw (3) to
remove the pickup assembly.