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29

• As operations related to loading 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  Z 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  Z  MD  button after pressing the MENU/NO “R” button and the rotation of disc is stopped.

• Continuous recording mode (CREC 1MODE) (C35)
• Laser power check mode (LDPWR CHECK) (C13)
• Laser power adjustment mode (LDPWR ADJUST) (C04)
• Comparison with initial Iop value written in nonvolatile memory (Iop Compare) (C27)
• Write current Iop value in read nonvolatile memory using microprocessor (Iop NV Save) (C06)
• Traverse (MO) check (EF MO CHECK) (C14)
• Traverse (MO) adjustment (EF MO ADJUST) (C07)
• When pressing the  z MD button.

Procedure : 1. Press the ?/1 button to turn the power on.

2. Press the  FUNCTION  button to enter “MD” mode.
3. Press three buttons of x  ,  REC MODE  , and  FUNCTION  simultaneously.
When the test mode is set, “[Check]” will be displayed. Pressing the  MD . “R”  or  MD>

 

“R” button between the

following three groups; ···Tt [Check] Tt [Service] Tt [Develop] Tt ···.

Do not use the test mode in the [Develop] group.
If used, the unit may not operate normally.
If the [Develop] group is set accidentally, press the MENU/NO “R” button immediately to exit the [Develop] group.

Press the  REPEAT  

b

utton twice and  ?

/

1  button to turn the power off, the set goes to the standby mode.

All operations are performed using the  MD 

.

 

“R” ,  MD 

>

 

“R”  ,  ENTER/YES “R”

  

,  MENU/NO “R”  and  REC MODE  buttons.

The functions of these buttons are as follows.

Function name

Function

 

ENTER/YES “R”

button

Proceeds onto the next step. Finalizes input

 

MENU/NO “R”

button

Returns to previous step. Stops operations

 .

 “R”

, >

 “R”

buttons

Changes parameters and modes

 

REC MODE

button

Selects the sub menu

1.

Press  ?/1  button to turn the power on.

2.

Press  FUNCTION  to change the function to “DVD”.

3.

Press three buttons  x  ,  ENTER/START  and  DVD u  simultaneously.

4.

The DVD mechanism goes to the transportation mode.

5.

When “LOCK” is displayed, disconnect the power cord.

6.

The lock is released when the power turns on next.

This mode is the combination of DVD SHIP mode and Cold reset.
In this mode, the MD reset is not activated.

1.

Press  ?/1  button to turn the power on.

2.

Press three buttons  x  ,  ENTER/START  and  MD u  simultaneously.

3.

When “LOCK” is displayed, disconnect the power cord.

4.

The lock is released when the power turns on next.

30

There are 26 types of test modes as shown below. The groups can be switched by pressing the  MD 

.

 “R”  or  MD

>

 “R”  button.

After selecting the group to be used, press the  ENTER/YES “R”

  

button. After setting a certain group, pressing the  MD 

.

 

“R”  or

 MD 

>

 “R” button switches modes shown below.

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

Do not use the test mode in the [Develop] group.
If used, the unit may not operate normally.
If the [Develop] group is set accidentally, press the  MENU/NO “R”  button immediately to exit the [Develop] group.

• For details of each adjustment mode, refer to “Section 5  Electrical Adjustments”.
• If a different mode has been selected by mistake, press the

  

MENU/NO “R”

  

button to release that mode.

• Modes with (

×

) 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 “R”

  

button to release the mode immediately.

Display

AUTO CHECK

Err Display

TEMP ADJUST

LDPWR ADJUST

Iop Write

Iop NV Save

EF MO ADJUST

EF CD ADJUST

FBIAS ADJUST

AG Set (MO)

AG Set (CD)

TEMP CHECK

LDPWR CHECK

EF MO CHECK

EF CD CHECK

FBIAS CHECK

ScurveCHECK

VERIFYMODE

DETRK CHECK

0920 CHECK

Iop Read

Iop Compare

ADJ CLEAR

INFORMATION

CPLAY 1MODE

CREC 1MODE

Details

Automatic self-diagnosis

Error history display, clear

Temperature compensation offset adjustment

Laser power adjustment

Iop data writing

Writes current Iop value in read nonvolatile memory using microprocessor

Traverse (MO) adjustment

Traverse (CD) adjustment

Focus bias adjustment

Auto gain output level adjustment (MO)

Auto gain output level adjustment (CD)

Temperature compensation offset check

Laser power check

Traverse (MO) check

Traverse (CD) check

Focus bias check

S-curve check

Nonvolatile memory check

Detrack check

Most circumference check

Iop data display

Comparison with initial Iop value written in nonvolatile memory

Initialization of nonvolatile memory for adjustment values

Display of microprocessor version, etc.

Continuous playback mode

Continuous recording mode

No.

C01

C02

C03

C04

C05

C06

C07

C08

C09

C10

C11

C12

C13

C14

C15

C16

C17

C18

C19

C25

C26

C27

C28

C31

C34

C35

Mark

Group

Check

Service

31

Function

MD N X

x

M 

m

PLAY MODE/DIRECTION

REC MODE

MD Z

REPEAT

CLEAR“R”

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  MD 

.

 

“R”  or  MD 

>

 

“R”  button to display “CPLAY 1MODE” (C34).

(3) Press the  ENTER/YES “R”

  

button to change the display to “CPLAY1MID”.

(4) When access completes, the display changes to “C = 

 AD = 

)”.

 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 “C = 

 AD = 

)”.

 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 1MODE” (C34).

(2) Press the  Z  (MD) button and take out the disc.

 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  MD 

.

 

“R”  or  MD 

>

 

“R”  button to display “CREC 1MODE” (C35).

(3) Press the ENTER/YES “R” button to change the display to “CREC 1MID”.
(4) When access completes, the display changes to “CREC 1(

)” and “ MD ” lights up.

 The numbers “ ” displayed shows 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. “

 

MD ” goes off.

(2) When access completes, the display changes to “CREC 1(

)” and “

 

MD ” lights up.

 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 1MODE” (C35) and “ MD ”  goes off.

(2) Press the  Z  (MD) button and take out the disc.

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

IN

: 40h cluster

MID

: 300h cluster

OUT

: 700h cluster

 The  MENU/NO “R”  button can be used to stop recording anytime.

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

 During continuous recording, be careful not to apply vibration.

“CPLAY 1MID” t “CPLAY 1OUT” t “CPLAY 1IN”  

“CREC 1MID” t “CREC 1OUT” t “CREC 1IN”  

Contents

Sets continuous playback when this is pressed in the STOP state. When this is pressed during continu-
ous playback, tracking power 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 the spindle servo mode (CLV S y CLV A)

Switches the pits or grooves each time the button is pressed

Ejects the disc

Releases the test mode

Clears the setting of pits and groove, and judges pits and groove again.

When it is pressed while servo is turning on, the recording starts from present position.

z MD

32

This test mode performs CREC and CPLAY automatically for mainly checking the characteristics of the optical pick-up.
To perform this test mode, the laser power must first be checked.
Perform AUTO CHECK after the laser power check and Iop Compare.

1.

Display “AUTO CHECK” and press the ENTER/YES “R” button. If “LDPWR 

 ” is displayed, it means that the laser power

check has not been performed. In this case, perform the laser power check and Iop Compare (C27), and then repeat from step1.

2.

If a disc is in the mechanical deck, it will be ejected forcibly.
“DISC IN” will be displayed in this case. Load a test disc (MDW-74/GA-1) which can be recorded.

3.

If a disc is loaded at step 2, the check will start automatically.

4.

When “XX CHECK” is displayed, the item corresponding to XX will be performed.
When “06 CHECK” completes, the disc loaded at step 2 will be ejected. “DISC IN” will be displayed. Load the check disc (TDYS-1).

5.

When the disc is loaded in step 4, the check will automatically be resumed from “07 CHECK”.

6.

After completing to “12 CHECK”, check OK or NG will be displayed. If all items are OK, “CHK ALL OK” will be displayed. If any
item is NG, it will be displayed as “NG:xxxx”.

When “CHK ALL OK” is displayed, it means that the optical pick-up is normal. Check the operations of other parts (spindle motor, sled
motor, etc.).
When displayed as “NG:xxxx”, it means that the optical pick-up is faulty. In this case, replace the optical pick-up.