WQ-740W/WQ-780W
– 4 –
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
outlet before starting to disassemble the unit and remove
the batteries from 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
PROCEDURE
FIGURE
1
Front Cabinet/
1. Battery Compartment Lid.
4-1
Rear Cabinet
................................. (A1)x1
2. Screw ................... (A2)x1
3. Screw ................... (A3)x8
4. Socket .................. (A4)x1
2
Tape mechanism 1. Screw ................... (B1)x2
4-2
2. Socket (B2)x3 WQ-740W
2. Socket (B2)x4 WQ-780W
3. Open the cassette holder.
4. Screw ................... (B3)x6
3
Main PWB
1. Knob ..................... (C1)x1
4-2
2. Screw ................... (C2)x4
3. Socket .................. (C3)x5
4
Graphic Equalizer 1. Screw ................... (D1)x5
4-3
PWB
5
Volume PWB
1. Knob ..................... (E1)x1
4-3
2. Screw ................... (E2)x2
3. Screw ................... (E3)x1
6
Power PWB
1. Screw ................... (F1)x1
4-4
2. Bracket ................. (F2)x1
Figure 4-4
Figure 4-2
Figure 4-1
Figure 4-3
(F1)x1
ø3x10mm
Power
Transformer
(F2)x1
Rear Cabinet
Power
PWB
Pull
(A2)x1
ø2.6x10mm
(A3)x8
ø3x20mm
(A1)x1
(A4)x1
Main PWB
Front
Cabinet
Rear
Cabinet
Front Cabinet
(D1)x5
ø3x10mm
(E3)x1
ø2x6mm
(E2)x2
ø3x10mm
Graphic
Equalizer PWB
Volume PWB
Lug Wire
(E1)x1
(C2)x4
ø3x10mm
(B1)x1
ø3x20mm
(B3)x6
ø3x10mm
(B1)x1
ø3x20mm
Main
PWB
(B2)x2
(B2)x1
(C3)x1
(C3)x4
Front Cabinet
Casette Holder
(Left/Right)
Open
Open
(C1)x1
Tape Mechanism
(B2)x1
WQ-780W Only
