CX-LDB10, CX-LDB20, XR-DB10, XR-DB20 - Sony Audio Service Manual (repair manual). Page 11

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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 customers.

1. Press the  ?/1  button to turn the set ON.
2. Press three buttons x ,  ?/1  and [VOLUME] down simulta-

neously.

3. The message “RESET” is displayed and the set is reset.

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A step of AM channels can be changed over between 9 kHz
and 10 kHz.

1. Press the  ?/1  button to turn the set ON.
2. Select the function “TUNER”, and press [TUNER/BAND]

button to select the BAND “AM”.

3. Press the  ?/1  button to turn the set OFF.
4. Press the  >  and  ?/1  buttons simultaneously, and thus

the channel step is changed over.

1. Press the  ?/1  button to turn the set ON.
2. Press the  CD u button to select “CD”
3. Remove the disc.
4. The message “NO DISC” is displayed.
5. Press three buttons  x  , CD u  and  [VOLUME] down si-

multaneously.

6. The message “SHIP RESET” is displayed and the set is reset.

The CD function is activated.

7. To exit from this mode, press the  ?/1  button and pull out the

AC plug.

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This mode is used to check the software version, LCD, LED
and keyboard.

1. Press the  ?/1  button to turn the set ON.
2. Press the  CD u button to select “CD”
3. Press three bottons  [DISPLAY] ,  ?/1  and  [VOLUME]  down

simultaneously.

4. When the panel test mode is activated, all segments are turned

on.

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This mode is used check the model, destination, software
version.

1. When the panel test mode is activated, press the button

[BASS/TREBLE], the model and destination are displayed.

1. When the panel test mode is activated, press the  H button,

to select the key test mode.

2. To enter the KEY test mode, the fluorescent indicator displays

“K0 VO”. Each time a button is pressed, “KEY” value
increases. However, once a button is pressed, it is no longer
taken into account. When all keys are pressed correctly, “K15
VO” is displayed.

3. To exit from this mode, pull out the AC plug.

1. Press the  ?/1  button to turn the set ON.
2. Set the function to “CD”.
3. Press three buttons  x ,  H , and [VOLUME] down simulta-

neously.

4. The repeat all mark blinks and then repeat 5 times limit is

released.