Sharp MD-MS200W Service Manual page 16

MD-MS200W/MD-MS200/MD-MS200H
Lead-in switch position adjusting method
Note: Measure the position of lead-in switch in the INNER mode, and fix the position of lead-in switch at SUBQ FF85 to FF02.
After retightening the screw, pressing the mechanism PWB in the arrow direction, measure again the position of lead-in switch. If the
removed screw cannot be fit after position adjustment, fix with two screws.
Adjustment of magnetic head mounting
position
• When the magnetic head and optical pickup have been replaced,
be sure to adjust the mounting position.
• For easier adjustment of mounting position move the optical
pickup to the center position, and then adjust the position.
1. Set the transparent disc 3 for adjustment.(*1)
2. Turn off the power supply, turn the head drive gear by hand to
lower the head.
3. Viewing the set from above, make an adjustment so that the
magnetic head aligns with the optical pickup objective lens.
• Circumferential direction: Slightly loosen the head fixing screw
(A), and shift the magnetic head fitting to align the head with the
pickup abjective lens.
• Radial direction:Turn the magnetic head circumferential adjust-
ment nut (B), and adjust to align the head with the objective lens.
*1: Before setting the disc remove the decoration plate from the
disc lid, and fix it as shown in Figure 16-2.
4. Make sure that there is a clearance as shown in Figure 16-2 and
that the magnetic head moves up and down smoothly.
5. After adjustment apply Screw Lock to the head fixing screw (A)
and adjusted magnetic head radial adjusting screw (B).
CNS601
CNS401
CNS101
Main PWB
Mechanism PWB
QCNWK0089AFZZ (6 Pin)
QCNWK0090AFZZ (7 Pin)
CNS201
QCNWK0091AFZZ (13 Pin)
CNS402
QCNWK0092AFZZ (14Pin)
QCNWK0093AFZZ (26 Pin)
Lead In Switch
Remove yhe screw when
adjustment is made.
Loosen two screws
Figure 16-1
Magnetic
head
Radial Direction
(Align the magnetic head
Objective with the upper end of lens)
lens
Circumferential direction
(Align the magnetic head
approximately with the
lens center)
Magnetic head
Headdrive flexible PWB
Flexible PWB
Pickup Flexible PWB
Figure 16-3
– 16 –
Radial
Direction
Clearance
A B
Slightly loosen the head
fixing screw.
Lift Motor
The lift pin is moved in the arrow direction
Figure 16-2
LCD Flexible PWB
Extension PWB for servicing
RUNTK0400AFZZ
(B)
(A)
Apply a screw lack for
head fixing.
Circumferential
direction
Mechanism
Flexible PWB