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— 9 —

1

Two screws
(BVTT 3x6)

2

Two screws
(BVTT 3x6)

4

Bracket (Motor) assembly

3

Connector (CN198 : HMOT board)

Shaft 

A

Slider assembly

1

When removing, move the slider assembly
in the arrow direction, and check that shaft
A is at the position shown in the figure.

3

Remove the four screws (BVTT 3x6), and
remove the four collars (dampers) and four
compression springs.

2

Connector
(CN198 :
HMOT board)

— 10 —

1

Leaf spring (UDL)

2

Leaf spring (UDR)

3

Holder assembly

5

Base unit
(MBU-2B)

4

Three screws
(BVTP 3x6)

5

Stopper washer

6

Gear (HEAD C)

8

Gear (HEAD B)

9

Two screws
(Precision P2x3)

1

Stopper
washer

3

Lever (OWH)

4

Torsion spring (OWH)

2

Shaft (OWH)

!™

HLIM board

!¡

Two screws
(PTP 2.6x6)

7

Stopper washer

!º

HMOT board

— 11 —

Eight test modes are selected by turning the AMS knob.

While pressing the AMS knob, insert the power plug into the power supply inlet, and release the AMS knob.

Press the REPEAT button. Unplug the power plug from an outlet.

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

For detailed description of each adjustment mode, refer to 5. Electrical Adjustments.
If a different adjustment mode has been selected by mistake, press the NO button to exit from it.
* The EEP MODE is not used in servicing. If set accidentally, press the NO button immediately to exit it.

1.

Entering the continuous playback mode
1 Set the disc in the unit (either MO or CD).(MO: Recordable disc, CD: Disc for playback only).
2 Rotate the AMS knob and display “CPLAY MODE”.
3 Press the YES button to change the display to “CPLAY IN”.
4 When access completes, the display changes to “C =

 AD =  –  –”.

Note : The “ ” displayed are arbitrary numbers.

2.

Changing the parts to be played back
1 Press the YES button during continuous playback to change the display to “CPLAY MID”, “CPLAY OUT”.

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

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

AD =  –  –”.

Note : The “ ” displayed are arbitrary numbers.

3.

Ending the continuous playback mode
1 Press the NO button. The display will change to “CPLAY MODE”.
2 Press the §OPEN/CLOSE 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

Function

AMS knob

YES button

NO button

Contents

Changes parameters and modes

Proceeds onto the next step. Finalizes input.

Returns to previous step. Stops operations.

Contents

Temperature compensation offset adjustment

Laser power adjustment

Traverse adjustment

Focus bias adjustment

Focus bias check

Continuous playback mode

Continuous recording mode

Non-volatile memory mode *

Display

TEMP ADJUS

LDPWR ADJUS

EFBAL ADJUS

FBIAS ADJUS

FBIAS CHECK

CPLAY MODE

CREC MODE

EEP MODE

Test Mode initial display

— 12 —

1.

Entering the continuous recording mode
1 Set the MO disc in the unit.
2 Rotate the AMS knob and display “CREC MODE”.
3 Press the YES button to change the display to “CREC IN”.
4 When access completes, the display changes to “CREC (

” an 

 lights up.

Note : The “ ” displayed are arbitrary numbers.

2.

Changing the parts to be recorded
1 When the YES button is pressed during continuous recording, the display changes to “CREC MID”, “CREC OUT” and 

 goes

off.
When pressed another time, the parts to be recorded can be changed.

2 When access completes, the display changes to “CREC (

” and 

 lights up.

Note : The “ ” displayed are arbitrary numbers.

3.

Ending the continuous recording mode
1 Press the NO button. The display changes to “CREC MODE” and 

 goes off.

2 Press the §OPEN/CLOSE  button and remove the disc.

Note 1 : The recording start addresses for IN, MID, and OUT are as follows.

IN

40h cluster

MID 300h cluster
OUT 700h cluster

Note 2 : The NO button can be used to stop recording anytime.
Note 3 : During the test mode, the erasing-protection tab will not be detected. Therefore be careful not to set the continuous recording

mode when a disc not to be erased is set in the unit.

Note 4 : Do not perform continuous recording for long periods of time above 5 minutes.
Note 5 : During continuous recording, be careful not to apply vibration.

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

Function

·

p

)

0

r

SCROLL/

CLOCK SET

PLAY MODE

DISPLAY/

CHAR

Contents

Sets continuous playback when pressed in the STOP state. When pressed during continuous playback, the tracking servo turns ON/OFF.

Stops continuous playback and continuous recording.

The sled moves to the outer circumference only when this is pressed.

The sled moves to the inner circumference only when this is pressed.

Turns recording ON/OFF when pressed during continuous playback.

Switches between the pit and groove modes when pressed.

Switches the spindle servo mode (CLVS and A).

Switches the display when pressed.Returns to previous step. Stops operations.

r