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17

2

Two scews
(BV2.6)

2

Two scews
(BV2.6)

3

Two collars

      (damper)

3

Two collars

      (damper)

4

Two compression 

     springs

4

Two compression 

     springs

5

BU holder assembly

1

 Turn the pully gear to align

     the slider with      of the rib. 
    (Refer to Fig. A.)

Fig. A

Slider

Rib

2

Two screws
(BV2.6)

4

Belt (loading)

3

Gear assembly

6

Motor (loading) assembly (M10)

5

Two screws
(B2 

×

 3)

1

Connector
(CN14)

18

A

4

Two screws
(BV2.6)

2

Leaf spring (UDR)

1

Leaf spring (UDL)

4

Two screws
(BV2.6)

5

Base unit

3

Remove the holder assembly

    in the direction of the arrow 

A

.

5

Two precision screws
(+P1.7 

×

 2.5)

4

Tapping screw 

     (M1.7)

3

Flexible board
(CN104)

3

Flexible board
(CN101)

7

BD board

6

Claw

2

Remove the soldering

    from the push switch.

1

Remove the soldering of

     the lead wires from
     the spindle motor assembly.

19

2

Screw
(P1.7 

×

 6)

1

Flexible board
(CN104)

3

Over light head

     (HR901)

2

Screw +B
(B2 

×

 8)

1

Flexible board (CN104)

1

Flexible board (CN101)

3

Leaf spring (shaft)

4

Main shaft

5

Remove the mini disc device (KMS-260B/J1N) 

     in the direction of the arrow 

A

.

A

20

•

Be sure to insert and eject a disc after confirming that the disc in the MDS-JA555ES has come to complete stop because the loading
related movements of the mechanism are performed without any relationship with the test mode.
Disc does not stop rotating even through the  A  button is pressed while disc is rotating in the modes such as continuous playback and
continuous recording.  Therefore, the disc is ejected while it is rotating.
Be sure to press the  MENU/NO  button, then press the  A  button after a disc has completely stopped of its rotation.

•

Continuos recording mode (CREC MODE)

•

Laser power check mode (LDPWR CHECK)

•

Laser power adjustment mode (LDPWR ADJUST)

•

Traverse (MO) check (EF MO CHECK)

•

Traverse (MO) check (EF MO ADJUST)

•

When the  zREC  button is pressed

There are two methods to enter the test mode as follows.
Method 1: Connect the power plug to the outlet while pressing the  lAMSL  knob and  x  button at the same time, and remove the

lAMSL  knob and  x  button at the same time.
When the unit enters the test mode, “[Check]” appears. The four groups can be switched, ......

↔

 Check 

↔

Adjust 

↔

Service

↔

Develop 

↔..... 

, by rotating the  lAMSL  knob.

Method 2: Connect the power plug to the outlet while pressing the  lAMSL  knob, and remove the  lAMSL  knob.

When the unit enters the test mode, “TEMP CHECK” appears. When the test mode is entered using this method, the contents of
check group at method 1 can be performed.

Press the  REPEAT  button. The display and LEDs of the pitch control and the filter are turned off. The MDS-JA555ES enters the standby
status and exits the test mode.

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

Function

Contents

lAMSL  knob

Changes parameters and modes

 YES  button

Proceeds onto the next step. Finalize input.

 MENU/NO  button

Returns to previous step. Stops operations.