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– 13 –

1

Front Panel

1.  Net ......................... (A1) x1

13-2

2

Woofer

1.  Screw .................... (B1) x4

13-3

3

Tweeter

1.  Screw .................... (C1) x2

13-3

(N2) x 3

(N1) x 1

(N1) x 1

CD
Mechanism

(A1) x 1

Screwdriver

Driver should
be pried away
from Speaker Box.

Front Panel

Speaker Box

(B1) x 4

ø4 x 12mm

Woofer

(C1) x 2

ø3 x 10mm

Tweeter

– 14 –

Perform steps 1 to 6 and 8 of the disassembly method to
remove the tape mechanism.

1. When you remove the screws  (A1) x 2 pcs., the recording/

playback head and three-dimensional head of the erasing
head can be removed.

1. When you remove the screws  (B1) x 2 pcs., the playback

head.

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

arrow <A>, and remove the pinch roller (C1) x 1 pc., in the
direction of the arrow <B>.

Note:
When installing the pinch roller, pay attention to the spring
mounting position.

1. Remove the main belt (D1) x 1 pc., from the motor side.
2. Remove the FF/REW belt (D2) x 1 pc.

1. Remove the main belt (E1) x 1 pc., from the motor side.
2. Remove the FF/REW belt (E2) x 1 pc.

1. Remove the screws (F1) x 2 pcs., to remove the motor.

(A1) x 2
Ø2 x 9mm

TAPE 2

Record/Playback
Head

Erase Head

Clutch Ass'y

(B1) x 2
Ø2 x 9mm

TAPE 1

Playback
Head

Clutch Ass'y

Pinch Roller
(C1) x 1

Pinch
Roller
Pawl

Pull

(F1) x 2
Ø2.6 x 5 mm

Motor

Clutch Ass'y

TAPE 2

TAPE 1
Main Belt
(E1) x 1

TAPE 2
Main Belt
(D1) x 1

TAPE 1

Main Belt
(D1) x 1

Main Belt
(E1) x 1

FF/REW
Belt
(D2) x 1

FF/REW
Belt
(E2) x 1

Motor

Motor

– 15 –

1. Remove the stop washer (B1) x 1 pc., to remove the gear

(B2) x 1 pc.

2. Remove the screws (B3) x 2 pcs., to remove the shaft (B4).
3. Remove the pickup.

Note
After removing the connector for the optical pickup from the
connector wrap the conductive aluminium foil around the front
end of connector so as to protect the optical pickup from
electrostatic damage.

Perform steps 1, 2, 3, 10, 11, 12 and 13 of the disassembly
method to remove the CD mechanism.

1. Bend the hooks (A1) x 5 pcs., to remove the loading motor.
2. Remove the drive belt (A2) x 1pc.

•

Play: TW-2111

Tape 1: Over 80 g
Tape 2: Over 80 g

•

Play: TW-2111

30 to 80 g.cm

30 to 80 g.cm

Fast forward: TW-2231

—

70 to 180 g.cm

Rewind: TW-2231

—

70 to 180 g.cm

Normal

MTT-111

Variable

3,000 

±

 30 Hz

Speaker

speed

Resistor in

Terminal

motor.

(Load
resistance:
6 ohms)

•

(A1) x 2

(A1) x 1

Loading
Motor

Loading
Motor PWB

Slide
Chassis

(A1) x 2

Pulley

Drive Belt
(A2) x 1

Loading
Motor

(B3) x 2
  ø2.6 x 6mm

Shaft
(B4) x 1

Stop Washer
(B1) x 1

Gear
(B2) x 1

CD Mechanism

Pickup

TAPE MECHANISM

Tape
Motor

Variable Resistor in motor

– 16 –

• 

Signal generator: 400 Hz, 30%, AM modulated

*1. Input: Antenna

Output: TP302

*2. Input: Antenna

Output: TP301

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

AM IF

450 kHz

1,620 kHz

T351

*1

AM Band

—

522 kHz

(fL): T306

*2

Coverage

1.1 

±

 0.1 V

AM Tracking 990 kHz

990 kHz

(fL): T303

*1

[Servo System Error]

0001

Cannot detect Pickup-in SW

0002

DSP access error

[Error during close operation]

0101

Open/Close SW not functioning (Low 

→

 High)

0103

Open/Close SW not functioning (High 

→

 Low)

[Error during open operation]

0201

Open/Close SW not functioning (Low 

→

 High)

0203

Open/Close SW not functioning (High 

→

 Low)

[Error during skip operation]

0302

Pickup-in SW is not detected

0306

During Disc 1 search, Open/Close SW or Clamp SW
or Disc SW do not change to low.

0307

Clamp SW not function (Low 

→

 High)

0308

Clamp SW not function (High 

→

 Low)

(1) Offset adjustment (The offset voltage between the head

amplifier output and the VREF reference voltage is
compensated inside the IC.)

  * Focus offset adjustment
  * Tracking offset adjustment

(2) Tracking balance adjustment (waveform drawing

Fig.16-2 EFBL)

(3) Gain adjustment (The gain is compensated inside the IC

so that the loop gain at the gain crossover frequency will
be 0 dB.)

  * Focus gain adjustment
  * Tracking gain adjustment

•  Adjustment

Since this CD system incorporates the following automatic
adjustment functions, readjustment is not needed when
replacing the pickup. Therefore, different PWBs and pickups
can be combined freely.
Each time a disc is changed, these adjustments are
performed automatically. Therefore, playback of each disc
can be performed under optimum conditions.

FE301

AM IF

T303

T306

AM

TRACKING fL

AM BAND

COVERAGE fL

T351

MAIN PWB

CNP302

AM LOOP

ANTENNA

SO302

FM

ANTENNA

TP302

R357

R336

TP301

EFBL

FDO

TE

Stopped

µ

•  FM
Notes:
1: Description of the "FM IF Adjustment" is not carried on this

Manual. It is because the IF coil in the FM front end section
has been best adjusted in the factory so that its further
adjustment is not needed at the field. When replacing the
FM front end assembly, no adjustment is needed either.

2: The parts in the FM front end section are prepared in a

complete unit, so you can't obtain each part individually.