Sony STR-DB1070 Service Manual - Page 12

TEST MODE, AM Channel Step 9 kHz/10 kHz Selection Mode - reset

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STR-DB870/DB1070 SECTION 4 TEST MODE Factory Set Mode All preset contents are reset to the default setting. Procedure: While pressing the [SET UP] and [DIMMER] buttons, press the I/1 button to turn on the main power. The message "TUNER FACTORY PRESET" appears and the present contents are reset to the default values. All Clear Mode All preset contents are cleared when this mode is activated. Use this mode before returning the product to clients upon completion of repair. Procedure: While pressing the [A.F.D.] and [MODE +] buttons, press the I/1 button to turn on the main power. The message "Memory Cleared" appears and the memories are reset to the default values. Sound Field Clear Mode The preset sound field is cleared when this mode is activated. Use this mode before returning the product to clients upon completion of repair. Procedure: While pressing the [MODE +] button, press the I/1 button to turn on the main power. The message "S.F Initialize" appears and initialization is performed. AM Channel Step 9 kHz/10 kHz Selection Mode (US, Canadian and E Models) Either the 9 kHz step or 10 kHz step can be selected for the AM channel step. Procedure: 1. Set the FUNCTION to AM. Press the I/1 button to turn off the main power. 2. While depressing the [PRESET TUNING +] button, press the I/1 button to turn on the main power. 3. Either the message "AM 9 kHz Step" or "AM 10 kHz Step" appears. Select the desired step. Version Mode When this mode is used, the microprocessor version number is displayed. Procedure: Press three buttons of [SHIFT], [MODE +] and [TUNING --] simultaneously. The microprocessor version number appears. Fluorescent Indicator Tube Test Mode All fluorescent segments are tested. When this test is activated, all segments turn on at the same time, then each segment turns on one after another. Procedure: 1. While pressing, the [A.F.D.] and [DIMMER] buttons, press the I/1 button to turn on the main power. 2. All segments turn on at the same time, then each segment turns on press the [A.F.D.] button. 3. To release from this mode, press the I/1 button or discon- nect the power cord. Demonstration Mode Procedure: While pressing the [SET UP] button simultaneously, press the I/1 button to turn on the main power. The set enters the DEMO mode. Wait a while, then the demonstration starts. If the I/1 button is pressed often the demonstration has started, the power is turned off, and the demonstration resumes if the I/1 button is pressed again. 12

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12
STR-DB870/DB1070
SECTION
4
TEST
MODE
Factory Set Mode
All preset contents are reset to the default setting.
Procedure:
While pressing the
[SET°UP]
and
[DIMMER]
buttons, press the
I
/
1
button to turn on the main power. The message “TUNER FAC-
TORY PRESET” appears and the present contents are reset to the
default values.
All Clear Mode
All preset contents are cleared when this mode is activated. Use
this mode before returning the product to clients upon completion
of repair.
Procedure:
While pressing the
[A.F.D.]
and
[MODE°+]
buttons, press the
I
/
1
button to turn on the main power. The message “Memory
Cleared” appears and the memories are reset to the default values.
Sound Field Clear Mode
The preset sound field is cleared when this mode is activated. Use
this mode before returning the product to clients upon completion
of repair.
Procedure:
While pressing the
[MODE°+]
button, press the
I
/
1
button to turn
on the main power. The message “S.F Initialize” appears and ini-
tialization is performed.
Fluorescent Indicator Tube Test Mode
All fluorescent segments are tested. When this test is activated, all
segments turn on at the same time, then each segment turns on one
after another.
Procedure:
1.
While pressing, the
[A.F.D.]
and
[DIMMER]
buttons, press
the
I
/
1
button to turn on the main power.
2.
All segments turn on at the same time, then each segment turns
on press the
[A.F.D.]
button.
3.
To release from this mode, press the
I
/
1
button or discon-
nect the power cord.
Demonstration Mode
Procedure:
While pressing the
[SET°UP]
button simultaneously, press the
I
/
1
button to turn on the main power. The set enters the DEMO
mode.
Wait a while, then the demonstration starts. If the
I
/
1
button is
pressed often the demonstration has started, the power is turned
off, and the demonstration resumes if the
I
/
1
button is pressed
again.
AM Channel Step 9 kHz/10 kHz Selection Mode
(US, Canadian and E Models)
Either the 9 kHz step or 10 kHz step can be selected for the AM
channel step.
Procedure:
1.
Set the FUNCTION to AM. Press the
I
/
1
button to turn off
the main power.
2.
While depressing the
[PRESET°TUNING°+]
button, press the
I
/
1
button to turn on the main power.
3.
Either the message “AM 9 kHz Step” or “AM 10 kHz Step”
appears. Select the desired step.
Version Mode
When this mode is used, the microprocessor version number is
displayed.
Procedure:
Press three buttons of
[SHIFT]
,
[MODE°+]
and
[TUNING°--]
si-
multaneously. The microprocessor version number appears.