MDS-JB980 - Sony Audio Service Manual (repair manual). Page 19

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MENU/NO button

YES button

AMS

Left or Right

knob

Push

Cancel or move to top hierarchy

Set

Select

Set submenu

• 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 EJECT  button 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 EJECT  button after pressing the  MENU/NO  button and the rotation of disc is stopped.

• Continuous recording mode (CREC 1MODE) (C35)
• Laser power check mode (LDPWR CHECK) (C13)
• Laser power adjustment mode (LDPWR ADJUST) (C04)
• Iop check (Iop Compare) (C27)
• Iop value nonvolatile writing (Iop NV Save) (C06)
• Traverse (MO) check (EF MO CHECK) (C14)
• Traverse (MO) adjustment (EF MO ADJUST) (C07)
• When pressing the  z REC  button.

The following are two methods of entering the test mode.
Procedure 1: While pressing the  l AMS L  knob and  x  button, connect the power plug to an outlet, and release the  l AMS L

knob and  x  button.
When the test mode is set, “[Check]” will be displayed. Rotating the  l AMS L  knob switches between the following
three groups; ··· y Check y Service y Develop y ···.

Procedure 2: While pressing the  l AMS L  knob, connect the power plug to the outlet and release the  l AMS L  knob.

When the test mode is set, “TEMP CHECK” will be displayed. By setting the test mode using this method, only the “Check”
group of method 1 can be executed.

NOTE: Do not use the test mode in the [Develop] group.

If used, the unit may not operate normally.
If the [Develop] group is set accidentally, press the  MENU/NO  button immediately to exit the [Develop] group.

Press the  REPEAT  button. The disc is ejected when loaded, and “Standby” display blinks, and the STANDBY state is set.

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

There are 25 types of test modes as shown below. The groups can be switched by rotating the  l AMS L  knob. After selecting the
group to be used, press the  YES  button. After setting a certain group, rotating the  l AMS L  knob switches between these modes.
Refer to “Group” in the table for details selected.
All adjustments and checks during servicing can be performed in the test mode in the Service group.

NOTE: Do not use the test mode in the [Develop] group.

If used, the unit may not operate normally.
If the [Develop] group is set accidentally, press the  MENU/NO  button immediately to exit the [Develop] group.