DOWNLOAD Sony MDS-JA333ES Service Manual ↓ Size: 24.42 MB | Pages: 95 in PDF or view online for FREE

21

2

Screw
(P1.7 

×

 6)

1

Flexible board
(CN104)

3

Over light head

     (HR901)

3

Screw 
(B2 

×

 8)

2

Flexible board (CN104)

1

Flexible board (CN101)

4

Leaf spring (shaft)

5

Main shaft

6

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

     in the direction of the arrow 

A

.

A

22

•

Be sure to insert and eject a disc after confirming that the disc in the MDS-JA333ES 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 1MODE)

•

Laser power check mode (LDPWR CHECK)

•

Laser power adjustment mode (LDPWR ADJUS)

•

IOP check (IOP compare) (Not used with the MDM-6J and MBU-5J)

•

IOP value non-volatile writing (IOP NV Save) (Not used with the MDM-6J and MBU-5J)

•

Traverse (MO) check (EF MO CHECK)

•

Traverse (MO) check (EF MO ADJUS)

•

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 three groups can be switched, ......

↔

 [Check] 

↔ 

[Service] 

↔

[Develop] 

↔..... 

, by rotating the  lAMSL  knob.

The Develop group is not used for service. If you enter the group mistakenly, immediately press the MENU/NO button and exit
the mode.

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” (C12) 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 MDS-JA333ES 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 name

Function

MENU/NO button

Chancels or moves to the upper hierarchy

YES button

Decision

lAMSL  knob (right/left) Selection

lAMSL  knob (pushed)

Decides the sub-menu

23

There are 26 types of the test mode. The group can be switched by rotating the  lAMSL  knob. All the adjustments and checks for
service can be performed in the test mode of the service group.
There is the Develop group, but it is not used for service. If you enter the group mistakenly, immediately press the MENU/NO button and
exit the group.

AUTO CHECK

Err Display

TEMP ADJUS

LDPWR ADJUS

Iop Write

Iop NV Save

EF MO ADJUS

EF CD ADJUS

FBIAS ADJUS

AG Set (MO)

AG Set (CD)

TEMP CHECK

LDPWR CHECK

EF MO CHECK

EF CD CHECK

FBIAS CHECK

Scurve CHECK

VERIFYMODE

DETRK CHECK

0920 CHECK

Iop Read

Iop Compare

ADJ CLEAR

INFOMATION

CPLAY1MODE

CREC 1MODE

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

Automatic self-diagnosis

Error history display, clear

Temperature compensation offset adjustment

Laser power adjustment

IP data writing

Reads the current IOP value with microprocessor and writes it to non-
volatile data

Traverse (MO) adjustment

Traverse (CD) adjustment

Focus bias check

Focus /tracking gain adjustment (MO)

Focus /tracking gain adjustment (CD)

Temperature compensation offset check

Laser power check

Traverse (MO) check

Traverse (CD) check

Focus bias adjustment

S curve check

Non-volatile memory check

Detract check

Outermost circumference check

IOP data display

Comparison to the initial IOP value written in non-volatile data

Initialization of non-volatile memory of adjustment value

Display of microprocessor version, etc.

Continuous playback mode

Continuous recording mode

×
×
×
×

®
®
®
®
®

®

®
®
®
®
®

®

®

®

®

®

®

®

®

®

®

®
®
®
®
®

®

®

®
®

®

®

®

®

®

®

•

For detailed description of each adjustment mode, refer to Section 5 “Electrical Adjustments”.
For “Err Display” (C02), refer to the self-diagnosis function of page 4.

•

If a different adjustment mode has been selected by mistake, press the  MENU/NO  button to exit from it.

•

The items marked 

×

 in the mark are not used in servicing, therefore they are not detailed. If select these modes accidentally, press the

MENU/NO  button immediately to exit from it. Be careful especially when using the test mode of the Develop group. The machine may
not run correctly.

•

AUTO CHECK, Iop NV Save and Iop Compare cannot be used with the MDM-6J and MBU-5J.

24

1. Entering the continues playback mode

1) Load the disc into the unit. (recordable disc or disc for playback)

The disc is loaded by pushing the tray.

2) Rotate the  lAMSL  knob to display “CPLAY1MODE” (C34).
3) Press the  YES  button to change the display to “CPLAY1MID”.
4) When access completes, the display changes the display to “C =              AD =       ”.
Note

: The value of the “    ” displayed on the screen indicates error rate and “ADER”.

2. Changing the parts to be played back

1) Press the  YES  button during continuos playback to change the display as shown and move the played back part.

2) When access completes, the display changes to “C =              AD =       ”.
Note

: The value of the “    ” displayed on the screen indicates error rate and “ADER”.

3. Ending the continuos playback mode

1) Press the  MENU/NO  button to change the display to “CPLAY1MODE” (C34).
2) Press the A button to eject the disc.
Note

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

IN

: 40h cluster

MID

: 300h cluster

OUT

: 700h cluster

"CPLAY1MID" 

 → 

 "CPLAY1OUT" 

 → 

 "CPLAY1IN"