Disassembly; Removing And Reinstalling The Main Parts - Sharp QT-CD210 Service Manual

QT-CD210/C
Caution on Disassembly
Follow the below-mentioned notes when disassembling the
unit and reassembling it, to keep it safe and ensure excellent
performance:
1. Take cassette tape and compact disc out of the unit.
2. Be sure to remove the power supply plug from the wall
outlet before starting to disassemble the unit.
3. Take off nylon bands or wire holders where they need to
be removed when disassembling the unit. After servicing
the unit, be sure to rearrange the leads where they were
before disassembling.
4. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
STEP REMOVAL
1 Top Cabinet/ 1. Screw ................... (A1) x7
Front Cabinet 2. Socket .................. (A2) x1
2 Power PWB 1. Screw ................... (B1) x2
2. Hook ..................... (B2) x2
3. Socket .................. (B3) x1
4. Hook ..................... (B4) x2
3 Main PWB/ 1. Socket .................. (C1) x1
CD Control PWB 2. Screw ................... (C2) x7
(Note) 3. Screw ................... (C3) x1
4. Solder ................... (C4) x3
5. Socket .................. (C5) x3
6. Screw ................... (C6) x2
4 CD Mechanism 1. Screw ................... (D1) x3
5 Tape Mechanism 1. Screw ................... (E1) x4
Top Cabinet
(A1)x4
ø3x12mm
Figure 4-1

REMOVING AND REINSTALLING THE MAIN PARTS

CD MECHANISM SECTION
Perform steps 1 to 4 of the disassembly method to remove the
CD mechanism.
How to remove the pickup (See Fig. 4-4.)
1. Remove the screws (A1) x 2 pcs., to remove the shaft (A2)
x1 pc.
2. Remove the stop washer (A3) x1 pc., to remove the gear
(A4) x 1 pc.
3. Remove the pickup.
Note : (Figure 4-3 and Figure 4-4)
After removing the connector for the optical pickup from the
connector, wrap the conductive aluminium foil around the
front end of connector to protect the optical pickup from
electrostatic damage.

DISASSEMBLY

PROCEDURE FIGURE
Front Cabinet
Main
PWB
(A2)x1
(A1)x3
ø3x12mm
Main PWB
(B4)x2
4-1
4-2
(B2)x2
Power PWB
4-2
(D1)x3
ø2.5x10mm
4-3
Washer
4-3
(C5)x1
4-3
(A1) x2
ø2.6 x6mm
Pickup
Shaft
(A2) x1
– 4 –
(C2)x7
ø3x12mm
AC Socket
(B1)x2
Power
ø3x12mm
Transformer
Figure 4-2
CD Mechanism
(C5)x2
Tape
Mechanism
(C6)x2
ø3x8mm
CD Control
PWB
Figure 4-3
Gear
(A4) x1
Figure 4-4
(C3)x1
ø2.5x8mm
CD Lid
Switch
(B3)x1
(C1)x1
(C4)x3
Top Cabinet
(E1)x4
ø3x10mm
Top Cabinet
CD
Mechanism
Stop
Washer
(A3) x1