MDS-SP55 - Sony Audio Service Manual (repair manual). Page 18

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• 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  A  button (MD) 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  A  button (MD) after pressing the  MENU/NO  button (MD) and the rotation of disc is stopped.

• Continuous recording mode (MD CREC MODE)
• Laser power check mode (MD LDPWR CHECK)
• Laser power adjustment mode (MD LDPWR ADJUST)
• Traverse (MO) check (MD EF MO CHECK)
• Traverse (MO) adjustment (MD EF MO ADJUST)
• When pressing the  z REC  button (MD).

The following are two methods of entering the test mode.
1. Rotate the  FUNCTION  knob (TA), and set the function to “MD” before hand. When the power OFF (STANDBY), press the  ?/1  button

(TA) while pressing the  s  button (MD) and  ENTER/YES  button (MD) together.

2. Press the  MENU/NO  button (MD), and when “MD Check” is displayed.
3. When the test mode is set, “MD [Check]” will be displayed. Rotate the  l L  knob (MD) switches between the following four

groups; ···

Tt MD Check Tt MD Adjust Tt MD Service Tt MD Develop Tt ···.

Press the  ?/1  button (TA). The disc is ejected when loaded, and “Standby” display blinks, and the STANDBY state is set.

All operations are performed using the  l L  knob (MD),  ENTER/YES  button (MD), and  MENU/NO  button (MD).
The functions of these buttons are as follows.

Function name

l L  knob (MD)

ENTER/YES  button (MD)

MENU/NO  button (MD)

Function

Changes parameters and modes

Proceeds onto the next step. Finalizes input.

Returns to previous step. Stops operations.