Sony MDS-JE480 Service Manual Download

Page: 24 / 68

MDS-JE480

REC

SYNC

L.SYNC

OVER

B/1

A-/REP

REC MODE

DISC/LP2

SLEEP/SHUF

MONO

Servo OFF

Tracking servo ON

Recording mode OFF

CLV normal mode

Tracking offset cancel OFF

Groove

Low reflection

CLV A

CLV UNLOCK

Contents

When Lit

When Off

Display

Servo ON

Tracking servo OFF

Recording mode ON

CLV low speed mode

ABCD adjustment completed

Tracking offset cancel ON

Tracking auto gain OK

Focus auto gain OK

Pit

High reflection

CLV S

CLV LOCK

4-8. MEANINGS OF OTHER DISPLAYS

4-9. AUTOMATIC SELF-DIAGNOSIS FUNCTION

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 check.

Procedure
1. Press the YES 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, and then repeat from step 1.

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 disk 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 (MD) TDYS-1.

5. When the disc is loaded in step 4, the check will automatically be resumed from “07 CHECK”.
6. After completing to test item 12, check OK or NG will be displayed. If all items are OK, “CHECK ALL OK” will be displayed. If any item

is NG, it will be displayed as “NG:xxxx”.

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

4-10. INFORMATION

Display the software version.

Procedure
1. If displayed as “INFORMATION”, press the YES button.
2. The software version will be displayed.
3. Press the MENU/NO button to end this mode.

4-11. WHEN MEMORY NG IS DISPLAYED

If the nonvolatile memory data is abnormal, “E001”/”MEMORY NG” will be displayed so that the MD deck does not continue operations.
In this case, set the test mode promptly and perform the following procedure.

Procedure
1. Set the test mode. (Refer to 4-2.)
2. Normally a message for selecting the test mode will be displayed. However if the nonvolatile memory is abnormal, the following will be

displayed. “INIT EEP?”

3. Press the STOP button and

EJECT button together.

4. Rotate the

AMS

knob and select MDM-7S1A.

5. Press the

AMS

knob. If the nonvolatile memory is successfully overwritten, the normal test mode will be set and a message

to select the test mode will be displayed.

Note:

When this setting is doing, readjustment is necessary.