STR-DB725, STR-DB825 - Sony Audio Service Manual (repair manual). Page 3

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Mode which sets the preset settings of the unit to that at shipment.

Procedure:
While pressing the  <  button and  BASS BOOST  button together, press the  1/u  button to turn on the power.
“FACTORY” will be displayed and factory settings executed.

Mode which erases all the preset settings of the unit.
Use this mode when returning the unit to the customer.

Procedure:
While pressing the  MEMORY  button and  MUTING  button together, press the  1/u  button to turn on the power.
“ALL CLEAR” will be displayed and initialization executed.

Mode which lights up the whole fluorescent indicator tube or partially.

Procedure:
While pressing the  

∨

  button and  BASS BOOST  button together, press the  1/u  button to turn on the power.

The whole fluorescent display tube lights up.
The fluorescent display tube and LED light up in the following sequence each time the  FUNCTION  knob is rotated.

Mode for checking key input.

Procedure:
Turn on the power by pressing the  1/u  button while pressing the  

∧

  button and the  BASS BOOST  button. “REST 25 KEY” is displayed.

The count decreases each time the button is pressed.
Buttons counted once will not be couned again.
“REST 00 KEY” is displayed when all the buttons are pressed.

The fluorescent display tube: All light up

LED: VIDEO 1  ,  VIDEO 3  , TAPE/MD  ,

5.1/DVD INPUT  ,  MASTER VOLUME  

and  SURROUND  light

Turn the  FUNCTION  knob

Turn the  FUNCTION  knob

Turn the  FUNCTION  knob

Turn the  FUNCTION  knob

The fluorescent display tube: Light up partially (1)

LED: TV/LED  ,  CD  ,  PHONO  ,

TONE  ,  BASS/TREBLE  and  

MASTER VOLUME  light

The fluorescent display tube: Light up partially (2)

LED: VIDEO 2  ,  TUNER  ,  BASS BOOST  ,

INDEX  ,  MASTER VOLUME  and  

MUTING  light

The fluorescent display tube: All lights out
LED: All lights out