Read Sharp QT-120H (serv.man2) Service Manual online
QT-120H
– 3 –
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 out of the unit.
2. Be sure to remove the power supply plug from the wall
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 and remove
the batteries from the unit.
the batteries from the unit.
3. Take off nylon bands or wire holders where they need
be removed when disassembling the unit. After servicing
the unit, be sure to rearrange the leads where they were
before disassembling.
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
PROCEDURE
FIGURE
1
Back Cabinet
1. Battery Compartment Lid.
3-1
................................. (A1)x1
2. Screw ................... (A2)x8
3. Screw ................... (A3)x1
4. Lug wire ............... (A4)x1
5. Socket .................. (A5)x1
3. Screw ................... (A3)x1
4. Lug wire ............... (A4)x1
5. Socket .................. (A5)x1
2
Top Cabinet
1. Socket .................. (B1)x2
3-2
2. Screw ................... (B2)x2
3
Tape mechanism 1. Open the cassette Door.
3-2
2. Screw ................... (C1)x4
4
Tuning Bracket
1. Knob ..................... (D1)x1
3-3
2. Screw ................... (D2)x5
3. Socket .................. (D3)x1
3. Socket .................. (D3)x1
5
Main PWB
1. Socket .................. (E1)x1
3-4
2. Screw ................... (E2)x2
3. Plug ...................... (E3)x1
4. Mic ....................... (E4)x1
3. Plug ...................... (E3)x1
4. Mic ....................... (E4)x1
6
Power AMP.PWB 1. Screw ................... (F1)x2
3-4
7
Graphic Equalizer 1. Socket .................. (G1)x1
3-4
PWB
2. Screw ................... (G2)x1
8
Power Supply
1. Screw ................... (H1)x1
3-5
PWB
2. Bracket ................. (H2)x1
Figure 3-5
Figure 3-2
Figure 3-1
Figure 3-4
Figure 3-3
(H1) x1
ø3 x8mm
ø3 x8mm
(H2) x1
Pull
Power
Transformer
Transformer
Back
Cabinet
Cabinet
Pawl
Driver
Push
Power
Supply
PWB
Supply
PWB
(A2) x8
ø3 x20mm
ø3 x20mm
(A3) x1
ø3 x8mm
ø3 x8mm
Top Cabinet
Front
Cabinet
Cabinet
Back Cabinet
(A4)x1
Main
PWB
PWB
(A5)x1
Power
AMP.PWB
AMP.PWB
(A1) x1
(C1) x4
ø3 x8mm
ø3 x8mm
(B1) x2
Front
Cabinet
Cabinet
Tape
Mechanism
Mechanism
Top
Cabinet
Cabinet
Cassette
Door
Stop/Eject Button
Open
Push
Main PWB
(B2) x2
ø3 x8mm
ø3 x8mm
(D2) x5
ø3 x12mm
ø3 x12mm
(D1) x1
Tuning
Bracket
Bracket
Main PWB
Power
AMP. PWB
AMP. PWB
(D3) x1
Front
Cabinet
Cabinet
(E2) x2
ø3 x8mm
ø3 x8mm
(G2) x1
ø2 x8mm
ø2 x8mm
(F1) x2
ø3 x8mm
ø3 x8mm
(G1) x1
(E1) x1
Power
AMP. PWB
AMP. PWB
Tuning
Bracket
Bracket
(E3) x1
Graphic Equalizer
PWB
PWB
Sheild
Paper
(E4) x1
Lug
Main
PWB
PWB
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