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— 29 —

 Follow the disassembly procedure in the numerical order given.

1

Two screws (+B4x8)

4

Case

7

Front panel assembly

5

Two screws (+BVTT3x8)

6

Wire (Flat type) (16 core)

2

Two screws (+B4x8)

3

Screw (+BVTT3x8)

6

Back panel

1

Four hexagon
screws (M2.6)

2

Three screws
(+B3x5)

4

Three screws
(+B3x5)

5

Three screws (+BVTT3x8)

3

Two screws (+BVTP4x10)

— 30 —

A

B

Slider

1

Two screws
(+B2.6x18)

2

Two collars

Pulley (BD)

3

Rotate the pulley (BD) in the direction
of arrow 

A

, and slide the slider (M)

assembly in the direction of arrow 

B

.

(As the stopper catches halfway, lightly
push up the stopper in the fig. A to
release, then rotate the pulley (BD) in
the direction of arrow 

A

.

4

Two screws
(+B2.6x18)

5

Two collares

6

Screw (+BVTT2.6x4)

7

Earth lug

8

Two MD insulators

9

Two compression springs

0

MD
insulator

!¡

Compression spring

!™

MD insulator

!£

Compression spring

!¢

MD mechanism deck

Fig. A

Bracket (BD)

Lever (SLM)

Torsion spring (SLM)

Slider (M) assembly

3

Screw (+PTT2x4)

4

Earth lug

1

Disengage a torsion spring
from the claw 

A

.

2

Disengage the claw 

B

, raise the

lever (SLM) upwards to remove.

A

 Claw

B

 Claw

D

C

 Claw

5

Move the claw 

C

 on the slider up to the

base rail in the direction of arrow 

D

 to

remove, and remove it in the direction of
arrow 

E

.

E

Base rail

— 31 —

1

Screw (+BVTP3x6)

4

Belt (BD)

5

Two screws (+B2.6x5)

6

Connector (CN192)

7

Loading motor assembly

3

MD base unit (MBU-2B6P)

1

Set the four left and right projections of
lever to the position as in the figure.

2

Rotate fully the lever (SLM)
in arrow direction 

A

.

4

Move the slider assembly in arrow direction

B

, and lock it to the lever (SLM).

3

Rotate the pully (BD)
in arrow 

C

 direction.

A

B

C

2

Two screws
(+BVTP3x6)

— 32 —

While pressing the AMS knob, turn POWER switch on, and release the AMS knob.

Turn POWER switch off.

All operations are performed using the AMS knob, ENTER/YES button, and EDIT/NO button.
The functions of these buttons are as follows.

Contents

Changes parameters and modes

Proceeds onto the next step. Finalizes input.

Returns to previous step. Stops operations.

Function

AMS knob

ENTER/YES button

EDIT/NO button

Twelve test modes are selected by turning the AMS knob.

Display

TEMP ADJUST

LDPWR ADJUST

EFBAL ADJUST

FBIAS ADJUST

FBIAS CHECK

CPLAY MODE

Contents

Temperature compensation offset adjustment

Laser power adjustment

Traverse adjustment

Focus bias adjustment

Focus bias check

Continuous playback mode

Display

EP MODE

VERSION DISP

RS232C CHECK

PARA-RMT CHK

HOURS MT DISP

SETUP INIT

Contents

Non-volatile memory mode *

Micro computer soft version

RS232C check *

Parari mode check *

Hours meter operating mode

Setup initialize mode

For detailed description of each adjustment mode, refer to 4. Electrical Adjustments.
If a different adjustment mode has been selected by mistake, press the EDIT/NO button to exit from it.
* The EP MODE, RS232C CHECK and PARA-RMT CHK is not used in servicing. If set accidentally, press the EDIT/NO button immediately

to exit it.

1. Entering the continuous playback mode

1 Set the disc in the unit (Whichever recordable discs or discs for playback only are available.)
2 Rotate the AMS knob and display “CPLAY MODE”.
3 Press the ENTER/YES button to change the display to “CPLAYIN”.
4 When access completes, the display changes to “C1 = 

 AD = 

”.

Note : The “ ” displayed are arbitrary numbers.

2. Changing the parts to be played back

1 Press the ENTER/YES button during continuous playback to change the display to “CPLY MID”, “CPLAY OUT”.

When pressed another time, the parts to be played back can be changed.

2 When access completes, the display changes to “C1 = 

 AD = 

”.

Note : The “ ” displayed are arbitrary numbers.

3. Ending the continuous playback mode

1 Press the EDIT/NO button. The display will change to “CPLY MODE”.
2 Press the EJECT button and remove the disc.
Note 1 : The playback start addresses for IN, MID, and OUT are as follows.

IN

40h cluster

MID

300h cluster

OUT

700h cluster

This mode reads and writes the contents of the non-volatile memory.
It is not used in servicing. If set accidentally, press the EDIT/NO button immediately to exit it.