Disassembly - Sharp MD-R3H Service Manual

MD-R3H
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 the minidisc out of the unit.
2. When disassembling the machine, be sure to withdraw
the power plug from the socket in advance.
3. When disassemble the parts, remove the nylon band or
wire holder as necessary.
To assemble after repair, be sure to arrange the wires as
they were.
If a screw of different length is fitted to the MD mecha-
nism (the screw of the part to be fitted to the MD
mechanism chassis), it may contact the optical pickup,
resulting in malfunction.
4. When repairing, pay due attention to electrostatic charges
of IC.
STEP REMOVAL
1 Top Cabinet 1. Screw ..................... (A1) x5
2 Rear Panel 1. Screw ..................... (B1) x5
3 MD Unit 1. Screw .................... (C1) x4
2. Flat Cable ............... (C2) x1
3. Socket .................. (C3) x1
4 Front Panel 1. Screw .................... (D1) x6
2. Flat Cable ............... (D2) x1
3. Socket ................... (D3) x4
5 CD Changer Block 1. Screw ...................... (E1) x4
(with CD Servo/ 2. Socket ..................... (E2) x4
CD Changer PWB)
6 Main PWB 1. Screw ..................... (F1) x6
(with Transformer)
7 Mic PWB 1. Screw ................... (G1) x2
8 Headphones PWB 1. Screw ....................... (H1) x2
9 Jog Dial 1. Knob ....................... (J1) x1
2. Nut .......................... (J2) x1
10 Display PWB/ 1. Knob ....................... (K1) x2
Switch PWB 2. Screw ................... (K2) x13
11 Switch PWB 1. Screw ..................... (L1) x4
12 CD Servo PWB 1. Screw ................... (M1) x3
(Note1) 2. Socket ................... (M2) x3
13 CD Changer PWB 1. Screw ....................... (N1) x2
14 Tray Switch PWB 1. Screw ..................... (P1) x1
15 CD Mechanism 1.Screw ..................... (Q1) x2
2. Top Board ............. (Q2) x1
3. Disc Holder ............ (Q3) x3
4. Disc Tray ............... (Q4) x3
5. Screw .................... (Q5) x1
6. Mechanism Holder
7. Mechanism Holder . (Q7) x1
8. Screw .................... (Q8) x4
16 MD Mechanism 1. Screw .................... (R1) x4
Unit
17 MD Main PWB 1. Screw ..................... (S1) x4
2. Socket .................... (S2) x6
18 MD Mechanism 1. Screw ..................... (T1) x4
Note 1. After removing the connector for the optical pickup
from the connector wrap the conducitive aluminum
foil around the front end of connector so as to protect
the optical pickup from electrostatic damage.

DISASSEMBLY

PROCEDURE
Guide ..................... (Q6) x1
(A1)x1
ø3x10mm
(A1)x3
ø3x10mm
(C1)x4
ø3x6mm
FIGURE
8-1
(C3)x1
8-2
8-2
8-3
8-3
8-3
(D1)x1
ø3x8mm
8-4
8-4
(F1)x2
ø4x8mm
8-4
Washer
8-4
(F1)x2
ø3x10mm
8-4
9-1 (E2)x1
Main PWB
9-1
(E2)x2
9-1
(E1)x1
9-2
ø3x10mm
9-3
Mic PWB
(G1)x2
9-4
ø2.6x10mm
9-5
– 8 –
Top Cabinet
Figure 8-1
MD Unit
(C2)x1
(B1)x5
ø3x10mm
Rear Panel
Figure 8-2
(F1)x2
(E2)x1
ø3x10mm
(D3)x1
(D2)x1
(D3)x3
(E1)x1
ø3x10mm
Figure 8-3
(K1)x1
Display PWB
Washer
(K2)x2
ø2.6x10mm
(K2)x11
ø2.6x10mm
(H1)x2
ø2.6x10mm
Figure 8-4
(A1)x1
ø3x10mm
Front Panel
Front Panel
CD Changer
Block
(D1)x1
ø3x8mm
(D1)x4
ø3x8mm
(E1)x2
ø3x10mm
(J2)x1
(J1)x1
(K1)x1
Headphones
PWB
Switch PWB
Front Panel
Switch PWB
(L1)x4
ø2.6x10mm