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– 14 –

1

two screws (P2.6 

×

 6)

4

bracket (Guide L)

3

leaf spring

2

 

harnes

6

bracket (Guide R)

7

slider (Cam)

5

two screws (P2.6 

×

 6)

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.

• Note for Installation of Slider A (Cam)

1

three screws
(P2.6 

×

 6)

2

base unit (MBU-5A)

3

Remove the solder (Seven portion).

4

screw (M1.7 

×

 4)

6

flexible board
(CN101)

7

BD board

5

flexible board
(CN104)

– 15 –

5

three screws (BTP2.6 

×

 6)

6

SW board

4

loading motor (M103)

3

two screws
(PWH1.7 

×

 4)

1

screw (PTPWH M2.6 

×

 6)

2

gear (B)

– 16 –

• 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 

[     EJECT]

 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 

[     EJECT]

 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 

[     REC]

 button.

The following are two methods of entering the test mode.
Procedure 1: While pressing the  

=  

AMS

 

+ knob and p button, connect the power plug to an outlet, and release the

  

= 

AMS

 

+ knob and p button.

When the test mode is set, “[Check]” will be displayed. Turn the  

= 

AMS

 

+ knob switches between the following four

groups; ···

Nn [Check] Nn [Adjust] Nn [Service] Nn [Develop] Nn ···.

Procedure 2: While pressing the  

= 

AMS

 

+ knob, connect the power plug to the outlet and release the  = 

AMS

 

+ knob.

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 

[REPEAT]

 button. The disc is ejected when loaded, and “Standby” display blinks, and the STANDBY state is set.

All operations are performed using the  

= 

AMS

 

+ knob, 

[YES]

 button, and 

[MENU/NO]

 button.

The functions of these buttons are as follows.

§

§

r

Function name

Function

=

 AMS 

+

 

knob

Changes parameters and modes

YES button

Proceeds onto the next step. Finalizes input.

MENU/NO button

Returns to previous step. Stops operations.

– 17 –

Mark

(X)

(X)

(X)

(X) (!)

(X)

(X)

(X)

(X)

(X)

(X)

(X)

(X)

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

= 

AMS

 

+ knob. After selecting the group

to be used, press the 

[YES]

 button. After setting a certain group, turn the  

= 

AMS

 

+ 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

ScurveCHECK

VERIFYMODE

DETRK CHECK

TEMP ADJUST

LDPWR ADJUST

EF MO ADJUST

EF CD ADJUST

FBIAS ADJUST

EEP MODE

Impossible

Impossible

ERR DP MODE

Impossible

Impossible

Impossible

Impossible

Impossible

Impossible

ADJ CLEAR

AG Set (MO)

AG Set (CD)

Iop Read

Iop Write

S40 ******

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

No.

C01

C02

C03

C04

C05

C06

C07

C08

C09

C10

C11

C12

C13

C14

C15

C16

C17

C18

C19

C20

C21

C22

C23

C24

C25

C26

C27

C28

C29

C30

C31

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

Group (

*

)

C: Check
S: Service

A: Adjust
D: Develop

• 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 acciden-

tally, 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.