Test Mode - Sony STR-DE1075 Service Manual

STR-DE1075
Factory Set Mode
All preset contents are reset to the default setting.
Procedure:
[SET UP]
While pressing the
button to turn on the main power. The message "TUNER
?/1
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:
[A.F.D.]
While pressing the and
press the ?/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:
[SOUND FIELD MODE]
While pressing the
button to turn on the main power. The message "S.F
?/1
Initialize" appears and initialization 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:
[A.F.D.]
1. While pressing, the
the ?/1 button to turn on the main power.
2. All segments turn on at the same time, then each segment turns
[A.F.D.]
on press the button.
3. To release from this mode, press the
the power cord.
Demonstration Mode
Procedure:
[SET UP]
While pressing the
?/1 button to turn on the main power. The set enters the DEMO
mode.
Wait a while, then the demonstration starts. If the
pressed often the demonstration has started, the power is turned
off, and the demonstration resumes if the
again.
10
SECTION 4

TEST MODE

[DIMMER]
and buttons, press the
[SOUND FIELD MODE]
buttons,
button, press the
[DIMMER]
and buttons, press
?/1 button or disconnect
button simultaneously, press the
button is
?/1
button is pressed
?/1
AM Channel Step 9 kHz/10 kHz Selection Mode
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
the main power.
[PRESET TUNING +]
2. While depressing the
button to turn on the main power.
?/1
3. Either the message "AM 9kHz Step" or "AM 10kHz Step"
appears. Select the desired step.
Version Mode
When this mode is used, the microprocessor version number is
displayed.
Procedure:
[SHIFT]
Press three buttons of
[TUNING --]
simultaneously. The microprocessor version number
appears.
button to turn off
?/1
button, press the
[SOUND FIELD MODE]
, and