DHC-MD515, HCD-MD515, RM-MD515 - Sony Audio Service Manual (repair manual). Page 21

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1. The erasing-protection tab is not detected in the test mode.

Therefore, operating in the recording laser emission mode and
pressing the REC/CD-MD SYNC button, the recorded con-
tents will be erased regardless of the position of the tab.  When
using a disc that is not to be erased in the test mode, be careful
not to enter the continuous recording mode and traverse adjust-
ment mode.
But “CREC MODE”, “EF MO CHECK” and “EF MO AD-
JUST” is detect the erasing-protection tab and recording laser
power off.

2. Using MD slot is “DISC 1” only.

1. Continuous recording mode (CREC MODE)
2. Traverse adjustment mode (EF MO ADJUST)
3. Laser power adjustment mode (LDPWR ADJUST)
4. Laser power check mode (LDPWR CHECK)
5. When pressing the REC/CD-MD SYNC button.
6. Traverse checking mode (EF MO CHECK)

1. Turn on the set, and select the MD function.
2. Place the MD in “NO DISC” status (No disc present in stocker

and inside of set)

3. Press DBFB button, DIMMER button, and  MD

6 button si-

multaneously to activate the Test mode.
When the Test mode is activated.  “TEMP ADJUST” is dis-
played on fluorescent indicator tube.

1. In the Test mode, use the slot 1 only.  (Do not load a disc in

other slots.)

2. When a disc is loaded in slot 1, in several seconds it will be

automatically pulled in.

3. To unload a disc, press MD

6 button .

4. To load a disc again, press MD

6 button .

5. In the Test mode, MD1, 2, 3 LEDs do not light regardless of

whether a disc is present or not.

Press the  REPEAT  button, and the set returns to normal mode.
(If REPEAT button is pressed with a disc loaded, the disc is au-
tomatically ejected.)

All operations are performed using the MULTI JOG dial,
ENTER/YES button, and EDIT/NO button.  The functions of
these buttons and dial are as follows.

Twenty six test modes are selected by turn the MULTI JOG dial.

• For detailed description of each adjustment mode, refer to the “5.

ELECTRICAL ADJUSTMENTS” (page 24).

• If a different adjustment mode has been selected by mistake, press

the EDIT/NO button to exit from it.

*1: Scurve CHECK, VERIFY CHECK, EEP MODE, MANUAL

CMD, SVDATA READ, SLED MOVE, ACCESS MODE, 0920
CHECK, Write sure?, HEAD ADJUST, CPLAY2MODE, and
CREC2MODE are not used in servicing.  If set accidentally,
press the POWER button immediately to exit it.

Display

Contents

TEMP CHECK

Temperature compensation offset check

LDPWR CHECK

Laser power check

EF MO CHECK

Traverse (E-F balance) check

EF CD CHECK

Travers (Pre mastered disk) check

FBIAS CHECK

Focus bias check

CPLAY MODE

Continuous playback mode

CREC MODE

Continuous recording mode

Scurve CHECK

S-curve check (*1)

VERIFY MODE

Non-volatile memory check (*1)

DETRK CHECK

Detrack check

TEMP ADJUST

Temperature compensation offset adjustment

LDPWR ADJUST

Laser power adjustment

EF MO ADJUST

Traverse (E-F balance) adjustment

EF CD ADJUST

Traverse (Pre mastered disk) adjustment

FBIAS ADJUST

Focus bias adjustment

EEP MODE

Non-volatile memory mode (*1)

MANUAL CMD

Manual command transfer mode (*1)

SVDATA READ

Data reading out mode (*1)

ERR DP MODE

Operation of error histories memory

SLED MOVE

Operation of sled motor (*1)

ACCESS MODE

Access check (*1)

0920 CHECK

Outermost periphery check (*1)

WRITE sure?

Non-volatile memory initialize  (*1)

HEAD ADJUST

HEAD adjustment check (*1)

CPLAY2MODE

Continuous playback mode  (*1)

CREC2MODE

Continuous recording mode  (*1)

Button & dial

Function

MULTI JOG dial

Changes parameters and modes.

ENTER/YES button

Proceeds onto the next step.
Finalizes input.

EDIT/NO button

Returns to previous step.
Stops operations.