HCD-HX3, HCD-HX5, HCD-HX7 - Sony Audio Service Manual (repair manual). Page 16

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This mode can run the CD sled motor freely. Use this mode, for
instance, when cleaning the optical pick-up.
Procedure:

1. Press the

I/

1

button to turn the power on.

2. Press the [FUNCTION] button to select “CD” (HX3/HX7).

Press the [CD] button on the remote commander to select “CD”

(HX5).

3. Press three buttons of [SEARCH],

 + and

Z

simultaneously,

the message “SERVICE MODE” is displayed on the
fluorescent indicator tube.

4. Press the

 – button to move the optical pick-up to inside

track and the message “SLED IN” is displayed on the
fluorescent indicator tube, or press the

 + button to outside

track and the message “SLED OUT” is displayed on the
fluorescent indicator tube.

5. Press the [DSGX] button, “LD ON” or “LD OFF” is displayed

on the fluorescent indicator tube. Each time [DSGX] button is
pressed, laser diode on/off is changed over.

6. To release this mode, press the

I/

1

button.

This mode is used to check the firmware version and address of
bluetooth module.
Procedure:

1. Press the

I/

1

button to turn the power on.

2. Press the [FUNCTION]  button to select “BLUETOOTH”

(HX7).

Press the [FUNCTION]  button on the remote commander to

select “BLUETOOTH” (HX5).

3. Press three buttons of [SEARCH],

 – and [BLUTOOTH OPR]

simultaneously, the message “BT Test” is displayed on the
fluorescent indicator tube. Then, the display is automatically
changed to the firmware version of bluetooth module.

4. Press the [DISPLAY] button, address of bluetooth module is

displayed on the fluorescent indicator tube.

5. To release this mode, press the

I/

1

button.