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— 13 —

1 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 EDIT/NO button and the rotation of disc is stopped.

2 The erasing-protection tab is not detected in the test mode. Therefore, operating in the recording laser emission mode and pressing the

rREC 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.

1.

Continuous recording mode (CREC MODE)

2.

Traverse adjustment mode (EFBAL ADJUST)

3.

Laser power adjustment mode (LDPWR ADJUST)

4.

Laser power check mode (LDPWR CHECK)

5.

When pressing the 

rREC button.

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

When the 1/u button is pressed, it becomes in the STANDBY mode. Or unplug the power plug from an outlet.

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

AMS knob

YES button

EDIT/NO

 button

Changes parameters and modes

Proceeds onto the next step. Finalizes input.

Returns to previous step. Stops operations.

Thirteen test modes are selected by turning the AMS knob.

TEMP ADJUST

LDPWR ADJUST

LDPWR CHECK

EFBAL ADJUST

FBIAS ADJUST

FBIAS CHECK

CPLAY MODE

CREC MODE

DETRK CHECK

S curve CHECK

EEP MODE

MANUAL CMD

SVDATA READ

Temperature compensation offset adjustment

Laser power adjustment

Laser power check

Traverse adjustment

Focus bias adjustment

Focus bias check

Continuous playback mode

Continuous recording mode

Detrack check

S curve check 

∗

Non-volatile memory mode 

∗

Manual command transfer mode 

∗

Data reading out mode 

∗

For detailed description of each adjustment mode, refer to “5. Electrical Adjustments”.
If a different adjustment mode has been selected by mistake, press the EDIT/NO button to exit from this mode.
* The EEP MODE, S curve CHECK, MANUAL CMD and SVDATA READ are not used in servicing. If set accidentally, press the EDIT/NO

button immediately to exit this mode.

— 14 —

4

4

1.

Entering the continuous playback mode

1 Set the disc in the unit. (Whichever recordable discs or discs for playback only are available.)
2 Rotate the AMS knob and display “CPLAY MODE”.
3 Press the YES 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 YES button during continuous playback to change the display as below.

 “CPLAY MID” 

n “CPLAY OUT”n “CPLAY IN”

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 EDIT/NO button. The display will change to “CPLAY MODE”.
2 Press the §EJECT button to remove the disc.

Note : The playback start addresses for IN, MID, and OUT are as follows. In case you want to display the address of the playback position

on the display, press the DISPLAY/CHAR button and display “CPLAY (

)”.

IN

40h cluster

MID 300h cluster
OUT 700h cluster

1.

Entering the continuous recording mode

1 Set a recordable disc in the unit. (Refer to Note 3)
2 Rotate the AMS knob and display “CREC MODE”.
3 Press the YES button to change the display to “CREC MID”.
4 When access completes, the display changes to “CREC (

)” and  

  lights up.

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

2.

Changing the parts to be recorded

1 When the YES button is pressed during continuous recording, the display changes as below.

“CPLAY MID” 

n “CPLAY OUT”n “CPLAY IN”

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

  goes off.

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

)” and  

  lights up.

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

3.

Ending the continuous recording mode

1 Press the EDIT/NO button. The display changes to “CREC MODE” and  

  goes off.

2 Press the §EJECT 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 EDIT/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 EDIT/NO button immediately to exit it.

— 15 —

”

P

CLOCK

TRACK

DISC

DATE

A. SPACE

A – B

      Focus auto gain successful

      Tracking auto gain failed

During continuous playback

Tracking servo OFF

Recording mode ON

CLV LOCK

Pit

High reflection

CLV-S

ABCD adjustment completed

    Focus auto gain successful
    Tracking auto gain successful

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

·

p

)

0

r REC

DISPLAY/

CHAR

Note : The erasing-protection tab is not detected during the test mode. Recording will start regardless of the position of the erasing-protection

tab when the 

r REC button is pressed.

Each time the DISPLAY/CHAR button is pressed, the display changes in the following order.
MODE display

nError rate displaynAddress displaynAuto gain displaynIVR display

The auto gain display and the IVR display are not used for servicing.
1.

MODE display
Displays “TEMP ADJUST”, “CPLAY MODE”, etc.

2.

Error rate display
Error rates are displayed as follows.

C1 = 

 

AD = 

C1 = : Indicates C1 error
AD = : Indicates ADER

3.

Address display
Addresses are displayed as follows. (MO : Recordable disc, CD : Disc for playback only)

h = 

s = 

 (MO pit and CD)

h = 

a = 

 (MO groove)

h = : Header address
s = : SUBQ address
a = : ADIP address
* “_” is displayed when the address cannot be read.

4.

Auto gain display
Auto gains are displayed as follows.

AG F = 

T = 

F= Focus auto gain collection value.
T= Tracking auto gain collection value.

STOP

Tracking servo ON

Recording mode OFF

CLV UNLOCK

Groove

Low reflection

CLV-A

                                            

                                            

                                           

                                           

— 16 —

To check the emission of the laser diode during adjustments, never
view directly from the top as this may lose your eye-sight.

As the laser diode in the optical pick-up is easily damaged by static
electricity, solder the laser tap of the flexible board when using it.
Before disconnecting the connector, desolder first. Before connecting
the connector, be careful not to remove the solder. Also take adequate
measures to prevent damage by static electricity. Handle the flexible
board with care as it breaks easily.

pick-up

flexible board

laser tap

1.Temperature

   compensation

   offset adjustment

2. Laser power

    adjustment

3. Traverse

    adjustment

4. Focus bias

    adjustment

5. Error rate check

IC101, IC121, IC192

D101

IC171

¬

¬

¬

¬

¬

G

¬

¬

¬

¬

¬

G

G

G

G

¬

¬

¬

¬

¬

1)

When replacing the following parts, perform the adjustments
and checks with 

¬ in the order shown in the following table.

2)

Set the test mode when performing adjustments.
After completing the adjustments, exit the test mode.

3)

Perform the adjustments in the order shown.

4)

Use the following tools and measuring devices.

• Check Disc (MD) TDYS-1

(Parts No. 4-963-646-01)

• Laser power meter LPM-8001 (Parts No. J-2501-046-A)
• Oscilloscope (Measure after performing CAL of prove.)
• Digital voltmeter
• Thermometer
• Jig for checking BD board waveform

(Parts No. : J-2501-124-A)

5)

When observing several signals on the oscilloscope, etc.,
make sure that VC and ground do not connect inside the
oscilloscope.
(VC and ground will become short-circuited.)

6)

Using the above jig enables the waveform to be checked without
the need to solder.
(Refer to Servicing Note on page 4.)

Note : When performing laser power checks and adjustment

(electrical adjustment), use of the new MD laser power meter
8010S (J-2501-145-A) instead of the conventional laser power
meter is convenient.
It sharply reduces the time and trouble to set the laser power
meter sensor onto the objective lens of the pick-up.

• This disc is used in focus bias adjustment and error rate check.

The following describes how to create a continuous recording disc.

1.

Insert a disc (blank disc) commercially available.

2.

Rotate the AMS knob and display “CREC MODE”.

3.

Press the YES button again to display “CREC MID”.
Display “CREC (0300)” and start to recording.

4.

Complete recording within 5 minutes.

5.

Press the EDIT/NO button and stop recording .

6.

Press the 

§EJECT button and remove the disc.

The above has been how to create a continuous recorded data for the
focus bias adjustment and error rate check.
Note :
• Be careful not to apply vibration during continuous recording.