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– 13 –

1

Side Panel/

1. Screw ..................... (A1) x4

13-1

Front Panel

2. Net .......................... (A2) x1

3. Catching Holder ..... (A3) x4
4. Screw ..................... (A4) x4

2

Subwoofer

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

13-2

3

Woofer

1. Screw ..................... (C1) x4

13-2

4

Tweeter

1. Screw ..................... (D1) x2

13-2

(A1)x4

ø4x20mm

(A4)x2

ø4x20mm

(A3)x2

(A3)x2

(A2)x1

(A4)x2

ø4x20mm

Front
Panel

Side Panel

(C1)x4

ø4x16mm

(B1)x4

ø4x16mm

(D1)x2

ø3x10mm

Tweeter

Woofer

Subwoofer

– 14 –

Perform steps 1 to 3 and 7, 12 of the disassembly method to
remove the tape mechanism. (See page 11.)

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

playback head and three-dimensional head of the erase
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)x2
Ø2x9mm

TAPE 2

Record/Playback
Head

Erase Head

Clutch Ass'y

(B1)x2
Ø2x9mm

TAPE 1

Playback
Head

Clutch Ass'y

Pinch Roller
(C1)x1

Pinch
Roller
Pawl

Pull

TAPE 2

TAPE 1
Main Belt
(E1)x1

TAPE 2
Main Belt
(D1)x1

TAPE 1

Main Belt
(D1)x1

FF/REW
Belt
(D2)x1

FF/REW
Belt
(E2)x1

Main Belt
(E1)x1

Motor

Motor

(F1)x2

Ø2.6x5mm

Motor

Clutch Ass'y

– 15 –

•

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)

•

TAPE MECHANISM

Tape
Motor

Variable Resistor in motor

Perform steps 1 to 6 of the disassembly method to remove the
CD mechanism. (See page 12.)

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

1. Remove the screws (A1)x 2 pcs., to remove shaft (A2)x 1

pc.

2. Remove stop washer (A3)x 1 pc., to remove gear (A4)x 1 pc.
3. Remove the pickup.

1. Remove the screws (B1)x 4 pcs., to remove the CD Servo

PWB.

2. Remove the (1) front top plate, (2) changer box, left/right

and (3) disc trays 1~6. After that, disassemble as shown in
the figure.

3. Remove the screws (B2)x 4 pcs.
4. Remove the tray motor and main cam motor.

Perform steps 1 to 4 of the disassembly method to remove the
CD changer mechanism. (See page 11.)

Note:
The parts of (1), (2) and (3) correspond to the drawing Nos.
117, 102, 103 and 108 to 113 of the CD change mechanism
disassembly drawing.
Remove the screws of 117, 102 and 103, and the parts of (1),
(2) and (3) will be ready for removal and the screws of the tray
motor and main cam motor will be visible.

(A1)x1
ø2.6x6mm

CD
Mechanism

Stop Washer
(A3)x1

Gear
(A4)x1

Shaft
(A2)x1

Pickup

(A1)x1
ø2.6x6mm

Main Cam Motor

Tray Motor

CD Servo
PWB

(1)Front Top Plate

(2)Changer Box,
    Left

(2)Changer Box,
    Right

(3)Disc Tray,1~6

CD Changer Mechanism

(B1)x4

ø3x10mm

(B2)x4

ø2.6x4mm

– 16 –

[Pickup Mechanism Error]

ER-CD00

Pickup mechanism error

ER-CD01

Pu-in SW detection NG

[CD Changer Mechanism Error]

ER-CD10

Changer error

ER-CD11

Initial error

ER-CD20

Tray error

(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.

EFBL

FDO

TE

Stopped

µ

• 

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

•  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.

R336

TP301

T306

R357

T351

CNP302

AM LOOP

ANTENNA

T303

MAIN PWB-A

1

SO301A

FM ANTENNA

TERMINAL

FE301

AM IF

AM BAND
COVERAGE fL

AM 
TRACKING fL

TP302