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– 9 –

Perform steps 1 to 10 of the disassembly method to remove
the tape mechanism.

1. When you remove the screws  (A1) x 2 pcs and  (A2) x 1 pc.,

the record/playback head can be removed.

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

arrow <A>, and remove the pinch roller (B1) 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 (C1) x 1 pc., from the motor side.
2. Remove the FF/REW belt (C2) x 1 pc.

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

(A1)x2
Ø2x6mm

(A2)x1
Ø2x9mm

Record/Playback
Head

Erase Head

Clutch Ass'y

Pinch Roller
(B1)x1

Pinch
Roller
Pawl

Pull

Main Belt
(C1)x1

FF/REW
Belt
(C2)x1

Motor

FF/REW
Clutch

Flywheel

(D1)x2
Ø2.6x5mm

Motor

Clutch Ass'y

– 10 –

1. Remove the CD changer mechanism unit by the method

described in page 7, and disassemble as shown in the
figure.

2. Remove the belt (B1) x 2 pcs from the motor side.
3. Remove the screws (B2) x 4 pcs.
4. Remove the tray motor and the main cam motor.

Perform steps 1 to 4 and 12  to 13 of the disassembly method
to remove the CD mechanism.

1. Remove the screws (A1) x 2 pcs and shaft (A2) x 1 pc.
2. Remove the stop washer (A3) x 1 pc and gear (A4) x 1 pc.
3. Remove the optical pickup.

Note:
After pulling out the optical pickup connector, wrap the tip of
it with conductive aluminium foil or the like to protect the
optical pickup from the static electricity.

Tray Motor

Main Cam 
Motor

Belt
(B1) x1

Belt
(B1) x1

(B2) x2
ø2.6 x4mm

(B2) x2
ø2.6 x4mm

(A1) x2
ø2.6 x5mm

CD
Mechanism 

Stop Washer
(A3) x1

Optical Pickup

Gear
(A4) x1

Shaft
(A2) x1

CD Disk

Disk Holder

Turn the main cam clockwise  
and raise the CD mechanism
and disk holder up to the 
uppermost position.

CD Changer
Mechanism Unit

(When CD is in playback state)

Disk Tray 1

Disk Tray 2

Disk Tray 3

Disc Holder

CD Mechanism

Press in turns the arrow
parts, starting with the 
uppermost one, to
withdraw the disc trays

Turn the main cam clockwise  
and raise the CD mechanism
and disk holder up to the 
uppermost position.

CD Changer
Mechanism unit

(When CD exists in the tray)

1

2

3

CD Disk

1. Remove the cabinet and front panel.
2. Disassemble as shown in the figure so that the CD disc of

CD changer becomes visible.

3. Remove the CD disc as shown in the figure.

1. Remove the cabinet and front panel.
2. Disassemble as shown in the figure so that the CD disc of

CD changer can be taken out.

3. Remove the CD disc from the tray as shown in the figure.

– 11 –

01

When Pickup set inner position, inner switch
cannot detect 'ON' level for 10 secs.

10

Cam error. Can't detect cam switch when cam is
moving.

11

When it detect cam operation error during initialize
process.

20

Tray error. Can't detect tray switch when tray is
moving.

21

When it detect tray operation error during initialize
process.

31

When it change to CD function, DSP cannot read
initial data.

•••••     

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

(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

(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.

R336

R357

AM

LOOP

ANTENNA

IC302

T351

IC303

L354

T303

T306

CNP302

SO301

FE301

MAIN PWB-A1

TP302

TP301

AM TRACKING fL

AM BAND
COVERAGE fL

AM IF

ANTENNA
TERMINAL

* 'CHECKING'
If Error is detected, 'CHECKING' will be displayed instead of
'ER-CD**'. 'ER-CD**' display will only be displayed when error
had been detected for the 5th times.

•  FM IF
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.

•••••

Play: TW-2111

Over 80 g

•

 Torque Check

Play: TW-2111

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

– 12 –

•

 Setting the test mode

 Any one of test mode can be set by pressing several keys as follows.
 <X-BASS> + <CD> + <ON/STAND-BY> TEST: CD operation test.

Function: -CD test mode.

-Enter test 4 mode.

C  D       T  E  S  T

OPEN/CLOSE operation is using manual.

<< 

 >>, << 

 >> buttons make pick's slide possible.

Do TOC IL. Do normal play.
When these following key is input
into PLAY key, track number  can
be appoint directly.

<<PLAY>> key input.

<<MEMORY>> key input.

<<

 1>> key: Track 4

<<

 2>> key: Track 9

<<

 3>> key: Track 15

<<STOP>> key input.

STOP

Laser ON.

<<MEMORY>> key input.

Tracking OFF play at that
specific point.

<<MEMORY>> key input.

Tracking ON play from
that specific point.

<<STOP>> key input.

STOP

IL isn't done

VOL — Last memory
BAL — CENTER
P.GEQ — FLAT
X-BASS — OFF

To cancel : Power OFF

Sliding the PICKUP with
<< 

 >>, << 

 >> button

must only be in STOP mode.

<<MEMORY>>
key input.

Adjustment result
automatically will
display as below.
for each 2 sec :
a) "FOFF_XX"
b) "TOFF_XX"
c) "TBAL_XX"
d) "TGAN_XX"
f) "FGAN_XX"
g) "RFLS_XX"

explanation:
a) Focus off set

= "FOFF_XX"

b) Tracking off set

= "TOFF_XX"

c) Tracking balance

= "TBAL_XX"

d) Tracking Gain

= "TGAN_XX"

f)

Focus Gain

= "FGAN_XX"

g) RF level shift

= "RFLS_XX"

Adjustment result automatically will
display as below for each 2 sec :
a) "FOFF_XX"
b) "TOFF_XX"
c) "TBAL_XX"
d) "TGAN_XX"
f) "FGAN_XX"
g) "RFLS_XX"

<<MEMORY>> key input.