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• 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  A (MD)  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  A (MD)  button after pressing the  MENU/NO “R”  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  zMD  button.

The following are two methods of entering the test mode.
Procedure 1: Press the  FUNCTION  button, and set the function to “MD” before hand. When the power ON, press the  ?/1  button while

pressing the  s  button and  z TAPE  button together.
When the test mode is set, “[Check]” will be displayed. Pressing the  lm/TUNING –  button or  ML/TUNING +
button switches between the following four groups; ···

Nn Check Nn Adjust Nn Service Nn Develop Nn ···.

Procedure 2: Press the  FUNCTION  button, and set the function to “MD” before hand. When the power ON, press the   ?/1  button while

pressing the  s  button and  STAPE  button together.
When the test mode is set, “TEMP CHECK” will be displayed. By setting the test mode using this procedure, only the “Check”
group of procedure 1 can be executed.

Press the  REPEAT/DOLBY NR/STEREO/MONO  button.

All operations are performed using the  lm/TUNING –   button or  ML/TUNING +  button,  ENTER/YES “R”  button, and
MENU/NO “R”  button.
The functions of these buttons are as follows.

lm/TUNING – 

  button or  

ML/TUNING +

  button

ENTER/YES “R”  button

MENU/NO “R”  button

Changes parameters and modes

Proceeds onto the next step. Finalizes input.

Returns to previous step. Stops operations.

Note 1: About “R”
As this unit has only a few buttons, some operations require the use of remote commander (RM-SJ373/provided with unit: 1-418-554-11)
buttons. These operations are indicated as  “R”  in this manual.
Example:  MENU/NO “R”  ...Press the MENU/NO button of the remote commander.

30

There are 31 types of test modes as shown below. The groups can be switched by pressing the  lm/TUNING – button or  ML/
TUNING +  button. After selecting the group to be used, press the  ENTER/YES “R”  button. After setting a certain group, pressing the
lm/TUNING  –  button or  ML/TUNING +  button 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.

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

SLED MOVE

ACCESS MODE

0920 CHECK

HEAD ADJUST

CPLAY2 MODE

CREC2 MODE

ADJ CLEAR

AG Set (MO)

AG Set (CD)

Iop Read

Iop Write

INFORMATION

CPLAY MODE

CREC MODE

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

(

X

)

(

X

)

(

X

)

(X

) (!)

(

X

)

(

X

)

(X

)

(

X

)

(

X

)

(X

)

(

X

)

(

X

)

*

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 “R”  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 “R”  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

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1.

Entering the continuous playback mode

1 Set the disc in the unit. (Whichever recordable discs or discs for playback only are available.)
2 Press the  lm/TUNING –  button or  ML/TUNING +   button and display “CPLAY MODE”.
3 Press the  ENTER/YES “R”  button to change the display to “CPLAY MID”.
4 When access completes, the display changes to “C1 =  AD = ”.

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

2.

Changing the parts to be played back

1 Press the  ENTER/YES “R”   button during continuous playback to change the display as below.

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

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

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

3.

Ending the continuous playback mode

1 Press the  MENU/NO “R”   button. The display will change to “CPLAY MODE”.
2 Press the  A (MD)  button to remove the disc.

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

IN

40h cluster

MID 300h cluster
OUT 700h cluster

1.

Entering the continuous recording mode

1 Set a recordable disc in the unit.
2 Press the  lm/TUNING –  button or  ML/TUNING +   button and display “CREC MODE”.
3 Press the  ENTER/YES “R”  button to change the display to “CREC MID”.
4 When access completes, the display changes to “CREC ()” and  z MD  indicator lights up.

Note : The numbers “” displayed show you the recording position addresses.

2.

Changing the parts to be recorded

1 When the  ENTER/YES “R”  button is pressed during continuous recording, the display changes as below.

When pressed another time, the parts to be recorded can be changed.  z MD  indicator goes off.

2 When access completes, the display changes to “CREC ()” and  z MD  indicator lights up.

Note : The numbers “” displayed shows you the recording position addresses.

3.

Ending the continuous recording mode

1 Press the  MENU/NO “R”   button. The display changes to “CREC MODE” and  r MD  indicator goes off.

2 Press the  A (MD)  button to 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  MENU/NO “R”   button can be used to stop recording anytime.
Note 3 : Do not perform continuous recording for long periods of time above 5 minutes.
Note 4 : 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 “R”   button immediately to exit it.

“CPLAY MID” 

n “CPLAY OUT” n “CPLAY IN”  

“C REC MID” 

n “C REC OUT” n “C REC IN”  

32

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.

Switches between the pit and groove modes when pressed.

Switches the spindle servo mode (CLV S 

˜ CLV A).

Switches the displayed contents each time the button is pressed.

Ejects the disc

Exits the test mode

MD 

7

s

ML/TUNING +

lm/TUNING –

CLEAR “R”

PLAY MODE/DIRECTION/TUNING MODE

DISPLAY “R”

A

 (MD)

REPEAT/DOLBY NR/STEREO/MONO

Use the remote commander (RM-SJ373/provided with unit: 1-418-554-11) buttons for operations indicated as “R”.

Each time the  DISPLAY “R”  button is pressed, the display changes in the following order.

Displays “TEMP ADJUST”, “CPLAYMODE”, etc.

Displays the error rate in the following way.

C1 =

       AD =   

C1 = : Indicates the C1 error.
AD = : Indicates ADER.

The address is displayed as follows. (MO:recordable disc, CD:playback only disc)
Pressing the  CLEAR “R”  button switches between the groove display and pit display.
h =         s =         (MO pit and CD)
h =         a =         (MO groove)
h = : Indicates the header address.
s = : Indicates the SUBQ address.
a = : Indicates the ADIP address.

Note: “–” is displayed when servo is not imposed.

The auto gain is displayed as follows.
AG =     /     [   ]

The detrack is displayed as follows.
ADR =             

The IVR is displayed as follows.
[   ][   ][  

Mode display

Error rate display

Address display

Auto gain display (Not used in servicing)

Detrack check display (Not used in servicing)

IVR display (Not used in servicing)