Disassembly - Sharp QT-80W Service Manual

QT-80W
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 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 Rear Cabinet 1. Battery Lid ............ (A1) x1
2. Screw ................... (A2) x6
3. Screw ................... (A3) x4
2 Front Cabinet 1. Knob ..................... (B1) x1
2. Nut ........................ (B2) x1
3. Socket .................. (B3) x3
3 Jack PWB 1. Socket .................. (C1) x2
2. Screw ................... (C2) x2
4 Volume PWB 1. Socket .................. (D1) x1
5 Battery PWB 1. Socket .................. (E1) x1
2. Hook ..................... (E2) x1
6 Headphones PWB 1. Socket .................. (F1) x1
2. Screw ................... (F2) x1
7 Main PWB with 1. Screw ................... (G1) x2
Tape Mechanism 2. Screw ................... (G2) x1
8 Main PWB 1. Socket .................. (H1) x2
2. Screw ................... (H2) x4
3. Solder ................... (H3) x2
9 Tape Mechanism 1. Open the cassette holder.
2. Screw .................... (J1) x4
10 X-BASS PWB 1. Screw ................... (K1) x3
How to attach the tuning display label
(See Fig. 4-4.)
5
Tuning Display Label
Figure 4-4

DISASSEMBLY

PROCEDURE FIGURE
Reference
1. Start Stick Label Matching
With Base Line
Base Line
Dial Drum
2. This Line Must Be
Stick Matching
(B1)x1
Volume
PWB
(B2)x1
Rear Cabinet
4-1
4-1
4-2
4-2
4-2
(F2)x1
ø4x10mm
4-2
Battery PWB
4-2
4-2
4-3
(E2)x1
5-1
Main PWB
5-2
(C1)x1
(B3)x2
(C1)x1
(H1)x2
(H3)x2
Main
PWB
Tape Mechanism
– 4 –
Front Cabinet
(A3)x4
ø3x12mm
Figure 4-1
Headphones PWB
Tape Mechanism
Handle
(G1)x2
ø3x12mm
(C2)x2
ø4x14mm
(D1)x1
(E1)x1
(F1)x1
Figure 4-2
(H2)x4
ø3x10mm
Figure 4-3
(A2)x6
ø3x30mm
(A1)x1
Lug Wire
(G2)x1
ø3x8mm
(B3)x1
Jack
PWB
Rear
Cabinet
Main PWB