CX-LFA600, XR-FA600 - Sony Car Audio Service Manual (repair manual). Page 13

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The cold reset clears all data including preset data stored in
the RAM to initial conditions. Execute this mode when re-
turning the set to the customer.

Procedure:
1. Press the [POWER] button to turn off the main power.
2. While depressing the  x  button, press the [POWER] button.
3. The fluorescent indicator tube does not display any message

and the set is reset.

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Fluorescent segments are tested when this test is activated.

Procedure:
1. Extract an AC plug.
2. While depressing the  CD u  button, insert an AC plug.
3. All segments of the fluorescent indicator tube turn on.
4. CD test mode is activated.
5. To exit from this mode, press the [POWER] button or discon-

nect the power cord.

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The model and the version are displayed.

Procedure:
1. Press the [POWER] button to turn the set on.
2. To enter the test mode, press two buttons  x  and [POWER]

simultaneously for more than five seconds. The model and the
version are displayed.

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This mode moves the optical pick-up to the position durable
to vibration. Use this mode when returning the set to the cus-
tomer after repair.

Procedure:
1. Press the [POWER] button to turn the set on.
2. Set the function to CD.
3. Press the  x  button for more than five seconds.
4. After a message “MECHA LOCK” is displayed on the fluo-

rescent indicator tube, the CD ship mode is set and the power
is turned off.

The disc tray lock function for the antitheft of an demonstration
disc in the store is equipped.
Setting Procedure:
1. Press the [POWER] button to turn the set on.
2. Press two buttons of  x  and  Z  (CD EJECT) simultaneously

for five seconds.

3. The message “LOCKED” is displayed and the tray is locked.
Releasing Procedure:
1. Press two buttons of  x  and  Z  (CD EJECT) simultaneously

for five seconds again.

2. The message “UNLOCKED” is displayed and the tray is un-

locked.

When “LOCKED” is displayed, the tray lock is not released by
turning power on/off with the [POWER] button.

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This mode is used to check the function of the amplifier.

Procedure:
1. Extract an AC plug.
2. While depressing the [AUX] button, insert an AC plug to enter

the AMP test mode. The message “AMP TEST” is displayed.

3. The message “Volume MAX” is displayed, when the [VOL-

UME] knob is rotated clockwise. The message “Volume 0” is
displayed, when the [VOLUME] knob is rotated counterclock-
wise.

4. Each time the [BASS] or [TREBLE] knob is turned, the mes-

sage “EQ MAX”, “EQ MIN” or “EQ FLAT” is displayed in
this order.

5. To release from this mode, disconnect the AC plug and turn

the power off.

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This mode can run the CD sled motor freely. Use this mode,
for instance, when cleaning the pickup.

Procedure:
1. Extract an AC plug.
2. While depressing the  CD u  button, insert an AC plug to

enter the CD test mode. The message “CD TEST” is displayed.

3. With the CD in stop status, press the + > M  button to

move the pickup to outside track, or press the – .m  but-
ton to inside track.

4. When press the  CD u  button, normal playback is performed.
5. Each time the  CD u  button is pressed during normal play-

back, the tracking servo is switched on or off for checking
tracking balance. (see page 17)

6. To exit from this mode, press the [POWER] button or discon-

nect the power cord.

Procedure:
1. Extract an AC plug.
2. While depressing the  TAPE Y  button, insert an AC plug.
3. The message “TC TEST” is displayed and TC test mode is

activated.

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Zero Return

1. Press the + > M  or  – .m  button.
2. The tape is rewound to the counter zero position.
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Automatic record/playback test

1. Press  the  REC START/REC PAUSE  button.
2. The message “AUX” is displayed and AUX input is selected.
3. The tape is rewound to the counter zero position and record-

ing is started automatically.

4. When the  x  button  is pressed, the tape is rewound to the

recording stated point and the set starts playback.

5. To exit from this mode, press the [POWER] button or discon-

nect the power cord.