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– 17 –

1

 

Two screws (BTP2.6x6)

2

 

Bracket (Guide L)

3

 

Leaf spring

5

 

Bracket (Guide R)

6

 

Slider (Cam)

4

 

Two screws (BTP2.6x6)

Set the shaft of Lever (O/C) to
be at the position in the figure.

Set the shaft of Cam gear to
be at the position in the figure.

1

 

Three screws

        (BTP2.6x6)

2

 

Base unit (MBU-5A)

3

 

Remove the solder (Five portion)

4

 

Screw (M1.7x4)

6

 

Flexible board

               (CN101)

7

 

BD board

5

 

Flexible board

               (CN104)

– 18 –

5

 

Two screws (BTP2.6x6)

6

 

SW board

4

 

Loading motor (M103)

3

 

Two screws

    (PWH1.7x4)

1

 

Screw (PTPWH M2.6x6)

2

 

Gear B

– 19 –

• As loading related operations will be performed regardless of the test mode operations being performed, be sure to check that the disc is

stopped before setting and removing it.
Even if the  

§  button is pressed while the disc is rotating during continuous playback, continuous recording, etc., the disc will not stop

rotating.
Therefore, it will be ejected while rotating.
Be sure to press the  

§  button after pressing the  MENU/NO  button and the rotation of disc is stopped.

• Continuous recording mode (CREC MODE)
• Laser power check mode (LDPWR CHECK)
• Laser power adjustment mode (LDPWR ADJUST)
• Traverse (MO) check (EF MO CHECK)
• Traverse (MO) adjustment (EF MO ADJUST)
• When pressing the  

rREC  button.

The following are two methods of entering the test mode.
Procedure 1: While pressing the  ENTER/YES  button and  

π  button, connect the power plug to an outlet, and release the  ENTER/YES

button and  

π  button.

When the test mode is set “TEMP CHECK” will be displayed. Press the  MENU/NO  button to display “Check”.
“[Check]” will be displayed. Rotating the  – 

˜ +  knob switches between the following four groups; ···Nn Check Nn

Adjust 

Nn Service Nn Develop Nn ···.

Procedure 2: While pressing the  ENTER/YES  button, connect the power plug to the outlet and release the  ENTER/YES  button.

When the test mode is set, “TEMP CHECK” will be displayed. By setting the test mode using this method, only the “Check”
group of method 1 can be executed.

Press the  

1/u  button in the mode other than “TEMP CHECK”. The disc is ejected when loaded, and “Standby” display blinks, and the

STANDBY state is set.

All operations are performed using the  – 

˜ +  knob,  ENTER/YES  button, and  MENU/NO  button.

The functions of these buttons are as follows.

Function name

– 

˜ + knob

ENTER/YES button

MENU/NO button

Function

Changes parameters and modes

Proceeds onto the next step. Finalizes input.

Returns to previous step. Stops operations.

– 20 –

There are 31 types of test modes as shown below. The groups can be switched by rotating the  – 

˜ +  knob. After selecting the group to be

used, press the  ENTER/YES  button. After setting a certain group, rotating the  – 

˜ +  knob switches between these modes.

Refer to “Group” in the table for details selected.
All items used for servicing can be treated using group S. So be carefully not to enter other groups by mistake.

Display

TEMP CHECK

LDPWR CHECK

EF MO CHECK

EF CD CHECK

FBIAS CHECK

S curve CHECK

VERIFY MODE

DETRK CHECK

TEMP ADJUST

LDPWR ADJUST

EF MO ADJUST

EF CD ADJUST

FBIAS ADJUST

EEP MODE

MANUAL CMD

SVDATA READ

ERR DP MODE

SLES MOVE

ACCESS MODE

0920 CHECK

HEAD ADJUST

CPLAY2 MODE

CREC2 MODE

ADJ CLEAR

AG Set (MO)

AG Set (CD)

Iop Read

Iop Write

INFOMATION

CPLAY MODE

CREC MODE

Contents

Temperature compensation offset check

Laser power check

Traverse (MO) check

Traverse (CD) check

Focus bias check

S letter check

Non-volatile memory check

Detrack check

Temperature compensation offset adjustment

Laser power adjustment

Traverse (MO) adjustment

Traverse (CD) adjustment

Focus bias adjustment

Non-volatile memory control

Command transmission

Status display

Error history display, clear

Sled check

Access check

Outermost circumference check

Head position check

Same functions as CPLAY MODE

Same functions as CREC MODE

Initialization of non-volatile memory of adjustment value

Auto gain output level adjustment (MO)

Auto gain output level adjustment (CD)

IOP data display

IOP data write

Microprocessing version display

Continuous play mode

Continuous recording mode

Mark

(

X

)

(

X

)

(

X

)

(X

) (!)

(

X

)

(

X

)

(X

)

(

X

)

(

X

)

(X

)

(

X

)

(

X

)

Group (

*

)

C

S

C

S

C

S

C

S

C

S

C

C

C

A

S

A

S

A

S

A

S

A

S

D

D

D

S

D

D

D

D

D

D

A

S

A

S

A

S

C

S

A

S

C

S

C

A

S

D

C

A

S

D

• For details of each adjustment mode, refer to “5. Electrical Adjustments”.

For details of “ERR DP MODE”, refer to “Self-Diagnosis Function” on page 2.

• If a different mode has been selected by mistake, press the  MENU/NO  button to exit that mode.
• Modes with (

X

) in the Mark column are not used for servicing and therefore are not described in detail. If these modes are set accidentally,

press the  MENU/NO  button to exit the mode immediately. Be especially careful not to set the modes with (!) as they will overwrite the
non-volatile memory and reset it, and as a result, the unit will not operate normally.

Group (

*

)

C: Check
S: Service

A: Adjust
D: Develop