Chapter 3. Mechanical Description; Disassembly - Sharp XL-DK257N Service Manual

CHAPTER 3. MECHANICAL DESCRIPTION

[1] Disassembly

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
2 Side Panel
(Left/Right)
3 CD Changer unit
4 Rear Panel with
Speaker PWB
5 Front Panel
6 Main PWB
7 Power PWB
8 Speaker PWB
9 Display PWB
10 USB PWB / SUB PWB
11 Jack PWB
12 Re-Flash PWB
13 CD MP3 PWB
14 CD Mechanism
Note:
After removing the connector for the optical pickup from
the connector, wrap the conductive aluminium foil around
the front end of the connector so as to protect the optical
pickup from electrostatic damage.
PROCEDURE
1. Screw ............................ (A1) X 6
1. Screw ............................ (B1) X 8
1. Screw ............................(C1) X 2
2. Hook ..............................(C2) X 2
3. Socket ...........................(C3) X 3
4. Flat Cable ......................(C4) X 2
1. Screw ............................(D1) X 4
2. Socket ...........................(D2) X 1
3. Flat Cable ......................(D3) X 1
1. Screw ............................ (E1) X 3
2. Flat Cable ...................... (E2) X 2
3. Socket ........................... (E3) X 1
4. Hook .............................. (E4) X 2
1. Screw ............................ (F1) X 3
2. Socket ........................... (F2) X 2
1. Screw ............................(G1) X 4
1. Screw ............................(H1) X 2
1. Knob ...............................(J1) X 1
2. Nut ..................................(J2) X 1
3. Washer ...........................(J3) X 1
4. Screw .............................(J4) X 6
1. Screw ............................ (K1) X 2
1. Screw ............................ (L1) X 1
1. Screw ........................... (M1) X 1
1. Screw ............................(N1) X 3
2. Flat Cable ......................(N2) X 2
3. Socket ...........................(N3) X 1
1. Screw ............................ (P1) X 4
2. Screw ............................ (P2) X 4
(A1)x2
3x12mm
(B1)x2
3x10mm
Side Panel
(Right)
(A1)x2
3x12mm
(B1)x2
3x10mm
Rear Panel
FIGURE
(B1)x2
3x10mm
1
(C4)x2 (C3)x2
1
2
(C3)x1
2
3
Rear Panel
Speaker PWB
3
3
(D1)x4
4
3x10mm
5
5
5
6
(F2)x1
7
(G1)x4
4x6mm
Power PWB
7
8
3 – 1
Top Cabinet
Front Panel
(B1)x2
3x10mm
Figure 1
CD MP3 PWB
CD Changer Unit
PULL
(C1)x1
3x10mm
Hook
(C2)x1
Figure 2
(E1)x1
3x6mm
(F1)x1
3x6mm
(E4)x1
PULL
(E3)x1
(F2)x1
(F1)x2
Main PWB 3x10mm
Figure 3
XL-DK257N
(A1)x2
3x12mm
Side Panel
(Left)
Front Panel
Hook
(C2)x1
PULL
(C1)x1
3x10mm
(D3)x1
(D2)x1
Front panel
(E2)x2
Hook
(E4)x1
PULL
(E1)x2
3x10mm