Disassembly - Sharp MD-MT821(GL) Service Manual

MD-MT821/W
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 IC.
STEP REMOVAL
1 Bottom Lid 1. Screw ..................... (A1) x5
2 Top Cabinet 1. Open the disc lid
2. Screw ..................... (B1) x4
3. Flexible PWB .......... (B2) x2
3 Center Cabinet A 1. Hook ...................... (C1) x2
4 Center Cabinet B 1. Remove in the arrow direction.
5 Main PWB 1. Flexible PWB ......... (D1) x2
2. Soldering ............... (D2) x2
3. Screw .................... (D3) x1
6 Mechanism Unit 1. Raise the rear part, and remove
Open or close the battery cover as shown below.
To open
1 2
Slide the battery cover.
To close
1 2
Raise the battery cover.
Mechanism Unit
Figure 10-4

DISASSEMBLY

PROCEDURE
in the arrow direction.
Note
E N
O P
Open it.
Do not raise the battery
cover upward.
O P
Do not force open the
battery cover too wide.
Slide it to close.
(B1)x2
ø1.4x2mm
(A1)x2
ø1.4x2mm
OPEN
FIGURE
Lever
10-1
10-1
10-3
10-2
Remove the hook
10-2
10-3
10-4
Center
Cabinet A
E N
Put the fold on the connector, and
apply with the felt. Sagging may
result in contact with the sheet metal.
Felt
Pull
(D1)x*1
Flexible PWB
for optical pickup
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.
– 10 –
(A1)x1
ø1.4x2mm
Top Cabinet
Bottom Lid
Figu re 10-1
Center
Cabinet B
Remove the hook
(C1)x2
Precision Driver
Push down the lever of center
chassis outwards , and move
the mechanism unit to remove it.
Figure 10-2
Main PWB
Pull
Pull
Pull
Pull
Pull
Pull
(D1)x1
Figure 10-3
(B1)x2
ø1.4x2mm
(A1)x2
ø1.4x2mm
(B2)x2
(D3)x1
ø1.7x2.5mm
(D2)x1
(D2)x3