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– 5 –

1

Top Cabinet

1. Screw .................. (A1) x5

5-1

2. Socket ................. (A2) x2

5-1,2

2

Side Panel(Left/Right) 1. Screw .................. (B1) x4

5-1

3

Rear Panel

1. Screw .................. (C1) x2

5-1

4

Main PWB/

1. Screw .................. (D1) x4

5-2

Headphones PWB

2. Socket ................. (D2) x4

3. Socket ................. (D3) x1

5

Front Panel

1. Screw .................. (E1) x2

5-3

2. Socket ................. (E2) x2

6

Power PWB

1. Screw .................. (F1) x1

5-3

2. Screw .................. (F2) x2

7

Display PWB

1. Knob .................... (G1) x1

5-4

2. Screw .................. (G2) x8

8

Tape Mechanism

1. Open the cassette holder

5-4

2. Screw .................. (H1) x4

9

CD PWB(Note)/

1. Screw .................. (J1) x4

6-1

Open Close Switch 2. Screw .................. (J2) x1
PWB

3. Socket ................. (J3) x3

10

CD Mechanism

1. Screw .................. (K1) x3

6-2

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.

(F2)x2
ø3x8mm

(E1)x1
ø3x10mm

(E1)x1
ø3x10mm

(F1)x1
ø3x10mm

(E2)x1

(E2)x1

Power 
PWB

Front Panel

Side Panel
(Right)

RearPanel

(C1)x1
ø3x10mm

(C1)x1
ø3x10mm

Side Panel
(Lift)

(A1)x1
ø3x10mm

(A1)x2
ø3x10mm

(A1)x1
ø3x10mm

(A1)x1
ø3x10mm

(A2)x1

(B1)x2
ø3x10mm

(B1)x2
ø3x10mm

Top Cabinet

CD PWB

(D1)x1
ø3x10mm

(D1)x1
ø3x10mm

(D1)x1
ø3x10mm

(D1)x1
ø3x10mm

(D2)x2

(A2)x1

(D2)x2

(D3)x1

Main PWB

Power PWB

Tape
Mechanism
PWB

Headphones
PWB

(G2)x8
ø2.6x10mm

(H1)x4
ø2.6x10mm

(G1)x1

Front Panel

Display PWB

Tape
Mechanism

Open

Cassette
Holder

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 electro-
static damage.

– 6 –

Perform steps 1 to 5 and 8 of the disassembly method to
remove the tape mechanism. (See page 5.)

1. Remove the screws (A1) x 2 pcs., to remove the erase

head.

2. Remove the screws (A2) x 2 pcs., to remove the record/

playback head.

Note:
After replacing the heads and  performing the azimuth
adjustment, be sure to apply screwlock.

1. Carefully bend the pinch roller pawl in the direction of the

arrow 

, and remove the pinch roller (B1) x 1 pc.,

upwards.

1. Remove the main belt (C1) x 1 pc.,  from the motor pulley.
2. Remove the FF/REW belt (C2) x 1 pc., from the REW/FF

roller.

3. Put on the belts in the reverse order of removal.
Note:
When putting on the belt, ascertain that the belt is not twisted,
and clean it.

1. Remove the main belt.
2. Remove the screws (D1) x 2 pcs., to remove the motor

bracket.

3. Remove the screws (D2) x 3 pcs., to remove the motor.
Note:
When mounting the motor, pay attention to the motor mounting
angle.

Pinch Roller
(B1)x1

Pinch Roller
Pawl

Main Belt
(C1)x1

FF/REW Belt
(C2)x1

REW/FF
Clutch

Motor

Erase Head

Record/
Playback Head

(A1)x2
ø2x8mm

(A2)x1
ø2x3mm

(A2)x1
ø2x7mm

(D1)x1
ø2x4mm

(D2)x3
Special
Screw

Motor
Bracket

Motor

Motor

(D1)x1
ø2x4mm

(K1)x3
ø2.6x10mm

Top Cabinet

CD Mechanism

(J1)x4
ø2.4x10mm

(J2)x1
ø2.6x10mm

(J3)x2

(J3)x1

Top Cabinet

CD PWB

Open/Close
Switch PWB

CD Mechanism

– 7 –

1. Remove the screw (F1) x 1 pc., to remove the tape

mechanism PWB.

2. Remove the screws (F2) x 1 pc.
3. Remove the solder joints (F3) x 2 pcs., to remove the tape

mechanism PWB.

1. Remove the belt.
2. Remove the stop washer (E1) x 1 pc., with a small precision

screwdriver to extract the flywheel from the capstan metal.

Note:
When the stop washer is deformed or damaged, replace it
with a new one.

Install each part in the reverse order of the removal with care.

Stop
Washer

Driver

(E1)x1
Stop Washer

Mechanism
Chassis

Washerx2

Flywheel

Tape 
Mechanism
PWB

Tape 
Mechanism
PWB

(F3)x2
Solder
Joint

(F2)x1
ø2x8mm

(F1)x1
ø2x3mm

– 8 –

Play: TW-2412

Over 80 g

Play: TW-2111

30 to 60 g. cm

Fast forward: TW-2231

55 to 140 g.cm

Rewind: TW-2231

55 to 140 g.cm

MTT-111

Variable

3,000 

±

Headphone

resistor in

90 Hz

terminal

motor.(M901)

87.5 MHz

87.5 MHz

3.4 V 

±

 1.0 V

TP301

108 MHz

108 MHz

7.8 V 

±

 1.0 V

TP301

• Check FM VT
Signal generator: 1 kHz, 40 kHz dev., FM modulated

IF

450 kHz

1,602 kHz

T351

*1

 AM Band

—

531 kHz

(fL): T306

*2

Coverage

1.1 

±

 0.1 V

AM

990 kHz

990 kHz

T302

*1

Tracking

fL: Low-range frequency
fH: High-range frequency

Signal generator: 400 Hz, 30%, AM modulated

98.00 MHz

98.00 MHz

VR351*1

Input: CNP301

(30 dB

µ

V)

Output: Speaker
Terminal

• FM RF
Signal generator: 1 kHz, 75 kHz dev., FM modulated

FM Band

—

87.50 MHz

(fL): L303

*1

Coverage

3.4 

±

 0.1 V

FM RF

98.00 MHz

98.00 MHz

L302

*2

(10~30 dB)

*1. Input: Antenna,

Output: TP301

*2. Input: Antenna,

Output: Speaker Terminal

• FM Detection
Signal generator: 10.7 MHz, FM sweep generator

FM IF

10.7 MHz

98.00 MHz

T304(Turn

Input: Pin 1 of

the core of

IC301

T304 fully
counter-
clockwise).

• FM Mute Level
Signal generator: 1 kHz, 40 kHz dev., FM modulated

*1. Adjust so that an output signal appears.

TAPE MECHANISM

M901
Tape
Motor

Variable
resistor
in motor

IC303 

IC302 

CF352 

R336

T306

VR351 

T302

T304

L303

IC301 

L302

BF301 

T351

1

9

MAIN PWB

ANTENNA
SOCKET

FM Mute
Level

AM IF

TP301

CNP301

AM
Tracking

AM Band
Coverage fL

FM Band
Coverage fL

FM RF

FM IF

*1. Input: Antenna

Output: Speaker terminal

*2. Input: Input is not connected

Output: TP301