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– 9 –

Lift up the over write head carefully
not to touch.

chassis (elevator)

2

base unit
(MBU-C1P)

1

two step screws

over write head

3

connector
(CN108)

1

two step screws

3

screw
(BTP2 

×

 6)

4

BD board

5

OP translation flexible board
(CN101)

1

two connectors
(CN104, 109)

2

two precision screws
(P1.7 

×

 2.5)

– 10 –

2

over write head (HR901)

1

precision screw
(P1.7 

×

 2.5)

3

shaft (MAIN)

2

stopper

1

special screw
(M1.7 

×

 1.4)

4

Remove the optical pick-up (KMS-260A/J1N)
to direction of the arrow.

– 11 –

1. The erasing-protection tab is not detected in the test mode.

Therefore, operating in the recording laser emission mode and
pressing the 

[REC1]

 button, the recorded contents will be erased

regardless of the position of the tab.  When using a disc that is
not to be erased in the test mode, be careful not to enter the
continuous recording mode and traverse adjustment mode.
But “CREC MODE”, “EF MO CHECK” and “EF MO AD-
JUST” is detect the erasing-protection tab and recording laser
power off.

2. Using MD slot is “MD1” only.

1. Continuous recording mode (CREC MODE)
2. Traverse adjustment mode (EF MO ADJUST)
3. Laser power adjustment mode (LDPWR ADJUST)
4. Laser power check mode (LDPWR CHECK)
5. When pressing the 

[REC1]

 button.

6. Traverse checking mode (EF MO CHECK)

1. Turn on the set, and select the MD function.
2. Place the MD in “NO DISC” status (No disc present in stocker

and inside of set)

3. Press 

[DISPLAY]

 button, 

[MD1]

 button, and

p button simul-

taneously to activate the Test mode.
When the Test mode is activated.  “TEMP CHECK” is dis-
played on fluorescent indicator tube.

1. In the Test mode, use the slot 1 only.  (Do not load a disc in

other slots.)

2. When a disc is loaded in slot 1, in several seconds it will be

automatically pulled in.

3. To unload a disc, press  

§ button .

4. To load a disc again, press  

§ button .

5. In the Test mode, MD1, 2, 3 LEDs do not light regardless of

whether a disc is present or not.

Press the 

[REPEAT]

 button, and the set returns to normal mode.

(If 

[REPEAT]

 button is pressed with a disc loaded, the disc is

automatically ejected.)

All operations are performed using the 

[     

=

 

        SELECTOR      

+

 

        ]

dial,

[ENTER/YES]

button, and

[MENU/NO]

button.  The func-

tions of these buttons and dial are as follows.

Button & dial

Function

= SELECTOR + dial

Changes parameters and modes.

ENTER/YES button

Proceeds onto the next step.
Finalizes input.

MENU/NO button

Returns to previous step.
Stops operations.

Twenty six test modes are selected by turn the

[     

=

 

        SELECTOR      

+

 

        ]

dial.

• For detailed description of each adjustment mode, refer to the

“5. ELECTRICAL ADJUSTMENTS” (page 14).

• If a different adjustment mode has been selected by mistake,

press the 

[MENU/NO]

 button to exit from it.

*1: Scurve CHECK, VERIFY CHECK, EEP MODE, MANUAL

CMD, SVDATA READ, SLED MOVE, ACCESS MODE,
0920 CHECK, WRITE sure?, HEAD ADJUST,
CPLAY2MODE, and CREC2MODE are not used in servic-
ing. If set accidentally, press the 

[MENU/NO]

 button immedi-

ately to exit it.

Display

Contents

TEMP CHECK

Temperature compensation offset check

LDPWR CHECK

Laser power check

EF MO CHECK

Traverse (E-F balance) check

EF CD CHECK

Travers (Pre mastered disk) check

FBIAS CHECK

Focus bias check

CPLAY MODE

Continuous playback mode

CREC MODE

Continuous recording mode

ScurveCHECK

S-curve check (*1)

VERIFYMODE

Non-volatile memory check (*1)

DETRK CHECK

Detrack check

TEMP ADJUST

Temperature compensation offset adjust-
ment

LDPWR ADJUST

Laser power adjustment

EF MO ADJUST

Traverse (E-F balance) adjustment

EF CD ADJUST

Traverse (Pre mastered disk) adjustment

FBIAS ADJUST

Focus bias adjustment

EEP MODE

Non-volatile memory mode (*1)

MANUAL CMD

Manual command transfer mode (*1)

SVDATA READ

Data reading out mode (*1)

ERR DP MODE

Operation of error histories memory

SLED MOVE

Operation of sled motor (*1)

ACCESS MODE

Access check (*1)

0920 CHECK

Outermost periphery check (*1)

WRITE sure?

Non-volatile memory initialize  (*1)

HEAD ADJUST

HEAD adjustment check (*1)

CPLAY2MODE

Continuous playback mode  (*1)

CREC2MODE

Continuous recording mode  (*1)

– 12 –

1. Set the disc in the slot 1 of unit. (In several seconds it will be

automatically pulled in.) (Whichever recordable discs or discs
for playback only are available.)

2. Turn the

[     

=

 

        SELECTOR      

+

 

        ]

dial and display “CPLAY

MODE”.

3. Press the 

[ENTER/YES]

 button to change the display to

“CPLAY MID”.

4. When access completes, the display changes to

“C = 

 AD = 

)”.

 The numbers “ ” displayed show you error rates and ADER.

1. Press the 

[ENTER/YES]

 button during continuous playback

to change the display as below.

2. When access completes, the display changes to

“C = 

 AD = 

)”.

 The numbers “ ” displayed show you error rates and ADER.

1. Press the 

[MENU/NO]

 button. The display will change to

“CPLAY MODE”.

2. Press the  

§  button and remove the disc. (To exit from the

TEST mode, press the 

[REPEAT]

 button.)

1.

The playback start address for IN, MID, and OUT are as follows.
IN

: 40h cluster

MID : 300h cluster
OUT : 700h cluster
In case you want to display the address of the playback position on
the display, press the 

[DISPLAY]

 button and display “CPLAY

(

)”.

2.

The 

[MENU/NO]

 button can be used to stop playing anytime.

1. Set the MO disc in the slot 1 of unit. (Refer to note 3.)
2. Turn the

[     

=

 

        SELECTOR      

+

 

        ]

dial and display “CREC

MODE”.

3. Press the 

[ENTER/YES]

 button to change the display to “CREC

MID”.

4. When access completes, the display changes to “CREC

(

)” and 

[PROGRAM]

 LED lights up.

The numbers “ ” displayed shows you the recording position ad-
dress.

1. When the 

[ENTER/YES]

 button is pressed during continuous

recording, the display changes as below. (“PROGRAM”
indication turns off during change-over of display.)

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

(

)” and 

[PROGRAM]

 LED lights up.

The numbers “ ” displayed shows you the recording position ad-
dress.

1. Press the 

[MENU/NO]

 button.  The display will change to

“CREC MODE” and 

[PROGRAM]

 LED goes off.

2. Press the  

§  button and remove the disc.

1.

The recording start address for IN, MID, and OUT are as follows.
IN

: 40h cluster

MID : 300h cluster
OUT : 700h cluster

2.

The

 

[MENU/NO]

 

button can be used to stop recording anytime.

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.

4.

Do not perform continuous recording for long periods of time above
5 minutes.

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

[MENU/NO]

 button immediately to exit it.

CPLAY MID

CPLAY OUT

CPLAY IN

CREC MID

CREC OUT

CREC IN