CX-LMNV5, XR-MNV5 - Sony Audio Service Manual (repair manual). Page 21

21

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The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning
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.

*

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 disconnect

the power cord.

*

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.

*

This mode moves the optical pick-up to the position durable to
vibration. Use this mode when returning the set to the customer
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

fluorescent 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

unlocked.

:When “LOCKED” is displayed, the tray lock is not released

by turning power on/off with the [POWER] button.

*

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 [VOLUME]

knob is rotated clockwise. The message “Volume 0” is displayed,
when the [VOLUME] knob is rotated counterclockwise.

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

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

*

Either the 9 kHz step or 10 kHz step can be selected for the AM
channel step.

Procedure:
1. Set the function to AM.
2. While depressing the [TUNER/BAND] button, press the [POWER]

button.

3. The channel step is changed over.

*

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  button 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

playback, the tracking servo is switched on or off for checking
tracking balance. (see page 25)

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

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.

*

Zero Return

1. Press the  M >  or  .m  button.
2. The tape is rewound to the counter zero position.
*

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 recording

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 disconnect

the power cord.