Service manual

ManualsBrandsSharp ManualsComputer equipmentMD-MS721H

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

(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 9-6Figure 9-5

(Illustration: MD-MS722H)