MD-MS722H/MS721H
– 9 –
1
Bottom Cabinet
1. Battery Cover ......... (A1) x1
9-1
2. Screw ..................... (A2) x6
2
Top Cabinet
1. Screw ..................... (B1) x3
9-1
2. Flexble PWB .......... (B2) x2
9-2
3
Main PWB
1. Screw .................... (C1) x2
9-2
2. Flexble PWB ......... (C2) x2
3. Soldering ............... (C3) x4
4
Mechanism Unit
1. Raise the rear part, and remove
9-3
in the arrow direction.
DISASSEMBLY
Cares before disassembling
When assembling the machine after disassembling or
repair, observe the following requirements so as to
ensure safety and performance.
1. Remove the batteries from the machine, and take out the
mini-disc.
2. When assembling after repair, be sure to restore the
initial location of wires.
Since the screws are small, incorrect fixing may result in
malfunction.
3. When repairing, pay utmost attention to static electricity
of ICs.
REMOVAL
PROCEDURE
STEP
FIGURE
Figu re 9-1
Figure 9-2
(A2)x1
ø1.4x2.5mm
(A2)x2
ø1.4x2mm (A2)x1
ø1.4x2mm
(A2)x2
ø1.4x2mm
(B1)x1
ø1.4x2mm
(B1)x2
ø1.4x2mm
Bottom Cabinet
Top Cabinet
Center
Cabinet
(A1)x1
Pull
(C1)x1
ø1.7x2.5mm
(C1)x1
ø1.7x2.5mm
(B2)x1
(C3)x3
(B2)x1
Top Cabinet
Pull
Pull
Pull
Pull
Pull
Pull
(C2)x1*
Flexble PWB for
optical pickup
(C2)x1
(C3)x1
Main PWB
Put the fold on the connector, and
apply with the felt. Sagging may
result in contact with the sheet metal.
Felt
Mechanism Unit
ø1.4x2.5mm
Figure 9-3
Caution:
Carefully handle the main PWB and flexible PWB. After removing the
flexible PWB (*1) for the optical pickup from the connector, do not
touch directly the front end of flexible PWB with your hand so as to
prevent damage of optical pickup by static electricity.
Figure 9-4
Cares when servicing:
Be sure to use the screw with washer (Part code: LX-BZ0822AFFC,
Distribution code: 124 970 0187). If a screw of different length is used
by mistake, MD ejection may be disabled.
Insert the key flexible PWB
at first into the clearance of
center cabinet.
Do not allow rise of
upper cabinet.
INSTALLING THE TOP CABINET
Figure 9-6
Figure 9-5
(Illustration: MD-MS722H)