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11

REC board

Chassis

3

DETECT board

7

Slider

4

Move slider away from pin.

8

Remove solder

   (2 places)

2

Claws

2

Claw

1

Over write head flexible board 

   (CN504)

5

6

Claws

MT-ZSM30-168

Case (MD upper) shield

Case (MD lower) shield

MD board

2

qs

CN601 (2pin)

7

Screws (+P 2.6 X 2.5)

4

Screws, MD fitting

4

Screws, MD fitting

0

Op flexible board

8

Claw

8

Claw

8

Claw

1

Screws (+BVTP 2.6 X 5)

5

9

6

Wire,parallel (9 core)

    REC board (CN505)

qa

Wire,Parallel (7 core)

3

Wire,parallel (22 core)

    Main board (CN807)

12

Over write head 
(HR901)

3

MD optical pick-up
(KMS-260B)

4

Chassis

1

Screw (+P 1.7X2.5)

6

D SW board

5

Screws (1.4 X 2)

2

Screws (+P 1.4 X 3.5)

13

Refer to “5. ELECTRICAL ADJUSTMENT” for the test mode of CD section.

• 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  Z (MD 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  Z (MD EJECT)  button after pressing the  NO/CANCEL  button and the rotation of disc is stopped.

1-1. Recording laser emission mode and operating buttons
• Continuous recording mode (CREC MODE)
• Laser power check mode (LDPWR CHECK)
• Laser power adjustment mode (LDPWR ADJUST)
• When pressing the  YES/ENTER  button.

1. Set to standby state.
2. Press and hold the  YES/ENTER  button then press MD  u

  t    x   t  u  t   x    .

Remove the power cord to release the test mode.

All operations are performed with the following buttons: jogdial  . , >  ,  YES/ENTER  and  NO/CANSEL  .
The functions of these buttons are as follows.

JOG (  >  )

Proceeds the parameter/mode change.

JOG (  .  )

Returns to the parameter/mode change.

YES/ENTER

Goes ahead. Determines the setting/selection.

NO/CANCEL

Suspends.

14

•When selecting test mode, usually the message “TEMP ADJUST” appears. In two rare cases, however, another message may be shown.

1. After conclusion of automatic temperature compensation (starting from display “TEMP = 00”), the message “Disc Insert” appears.
2. The message “Disc Insert” is displayed right form the start.

In both cases press the   YES/ENTER   button while holding the  EDIT   button, thus displaying “TEMP ADJUST” and entering
normal test mode.

In order to cause “TEMP ADJUST” to be displayed whenever test mode is selected, execute the following steps.

1.  Rotate the jog dial until “EEP MODE” is shown.
2. Press the   YES/ENTER   button to display “EEP READ”.
3. Press the   YES/ENTER   button to display “EEP XXXX”.

(The first two “X”-marks represent the address, the latter two the value).

4.  Rotate the jog dial to set the address to 15.
5. Press the   YES/ENTER   button while holding the   EDIT   button.
6. Confirm that the display shows “EEP15XX >XX”.
7. Rotate the jog dial to set the value after the “>”-mark to FF.
8. Press the   YES/ENTER   button.
9. Confirm that the display shows “Complete”.
10.After that, confirm that the display turns to “EEP READ”.
11.Press the   YES/ENTER   button.
12.Confirm that the display shows “EEP15FF”.
13.Press the   NO/CANCEL   button.

There are 9 types of test modes as shown below. The groups can be switched by turn the jog dial. After selecting the
group to be used, press the  YES/ENTER   button. After setting a certain group, turn the jog dial between these modes.

• For details of each adjustment mode, refer to “5. Electrical Adjustments”.
• If a different mode has been selected by mistake, press the  NO/CANCEL  button to release that mode.
• EEP MODE is not used for servicing and therefore are not described in detail. If these modes are set accidentally, press the  NO/CANCEL

button to release the mode immediately. Be especially careful this mode will overwrite the non-volatile memory and reset it, and as a

result, the unit will not operate normally.

TEMP ADJUST

Temperature compensation offset adjustment

LDPWR ADJUST

Laser power adjustment

LDPWR CHECK

Laser power check

LOAD CHECK

load check

S CURVE CHECK

S curve check

EFBAL ADJUST

EF balance adjustment

FBIAS ADJUST

Focus bias adjustment

FBIAS CHECK

Focus bias check

CPLAY MODE

Continuous playback mode

CREC MODE

Continuous recording mode

DETRK CHECK

Detrack check

LOAD AGING

Load aging

EEP MODE

Non-volatile memory control