Read Sony STR-DB900 Service Manual online
7
STR-DB900
SECTION 3
TEST MODE
[FL TEST MODE]
Fluorescent segments display test
Procedure:
1. Press the [POWER] button to turn the set off.
2. To enter the test mode, while pressing the two buttons [DISPLAY] and [SOUND FIELD], press [POWER] button.
3. All segments turn on.
4. To exit from this mode, press the [POWER] button to turn the set off.
2. To enter the test mode, while pressing the two buttons [DISPLAY] and [SOUND FIELD], press [POWER] button.
3. All segments turn on.
4. To exit from this mode, press the [POWER] button to turn the set off.
[VERSION CHECK]
Firmware Version Check
Procedure:
1. Press the [POWER] button to turn the set off.
2. To enter the test mode, while pressing the two buttons [DIRECT] and [SOUND FIELD], press [POWER] button.
3. The message version “
2. To enter the test mode, while pressing the two buttons [DIRECT] and [SOUND FIELD], press [POWER] button.
3. The message version “
DB9 CE 1.05 ” is displayed.
4. To exit from this mode, press the [POWER] button to turn the set off.
[KEY CHECK]
Check the buttons operate normally or not.
Procedure:
1. Press the [POWER] button to turn the set off.
2. To enter the test mode, while pressing the two buttons [DIRECT] and [SURR BACK DECODING], press [POWER] button.
3. The message “
2. To enter the test mode, while pressing the two buttons [DIRECT] and [SURR BACK DECODING], press [POWER] button.
3. The message “
RESET ** ” is displayed.
**: Number of buttons
4. Every time you press the button,
** counts down one by one.
5. In case of every buttons are pressed, the finished indication “
RESET 00 ” appears.
6. To exit from this mode, press the [POWER] button to turn the set off.
[SWAP ALL MODE]
Outputs of speakers checking mode. The L/R channel signals output from all of the speakers.
Procedure:
1. Press the [POWER] to turn the set off.
2. To enter the test mode, while pressing the two buttons [INPUT MODE] and [MULTI CH IN], press [POWER] button.
3. The message “
2. To enter the test mode, while pressing the two buttons [INPUT MODE] and [MULTI CH IN], press [POWER] button.
3. The message “
SWAPMODE ” is displayed.
4. The L/R channel signals output from all of the speakers.
5. In this mode, every time pressing [PRESET +] button, VOLUME LEVEL changes.
5. In this mode, every time pressing [PRESET +] button, VOLUME LEVEL changes.
6. To exit from this mode, press the [POWER] button to turn the set off.
[HISTORY MODE]
Display of the internal information on the protector being activated.
(SF, Volume level value, Tone setting, Operating time)
(SF, Volume level value, Tone setting, Operating time)
Procedure:
1. Press the [POWER] button to turn the set off.
2. To enter the test mode, while pressing the two buttons [INPUT MODE] and [SURR BACK DECODING], press [POWER] button.
2. To enter the test mode, while pressing the two buttons [INPUT MODE] and [SURR BACK DECODING], press [POWER] button.
VOL MIN
VOL 34
VOL MAX
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