Sony STR-DE525, Service Manual

Page: 6 / 40

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SECTION 2
TEST MODE
SOFTWARE VERSION DISPLAY MODE
* The software version is displayed.
* Procedure:
While depressing the TUNER and the BASS BOOST buttons
simultaneously, press the power [I/
u
] button to turn on the main
power. The software version is displayed.
KEY TEST MODE
* All keys are tested.
* Procedure:
While depressing the CD and the BASS BOOST buttons
simultaneously, press the power [I/
u
] button to turn on the main
power. The message REST40 appears. When the respective keys
are pressed one after another, the number decrements in the order
of REST39, REST38, and so on.
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:
While depressing the TV/LD and the BASS BOOST buttons
simultaneously, press the power [I/
u
] button to turn on the main
power. All segments turn on at the same time, then each segment
turns on one after another.
FACTORY SET MODE
* All preset contents are reset to the default setting.
* Procedure:
While depressing the VIDEO and the BASS BOOST buttons
simultaneously, press the power [I/
u
] button to turn on the main
power. The message FACTORY 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 depressing the VIDEO and the TAPE/MD buttons
simultaneously, press the power [I/
u
] button to turn on the main
power. The message INITIAL appears and initialization is
performed.
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 depressing the SOUND FIELD ON/OFF button, press the
power [I/
u
] button to turn on the main power. The message S. F.
CLEAR appears and initialization is performed.
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:
Set the FUNCTION to AM. Turn off the main power.
While depressing the button or the button,
press the power [I/
u
] button to turn on the main power. Either
the message 9k STEP or 10k STEP appears. Select the desired
step.
DEMO MODE
* Continuous demonstration starts when the demo mode is activated.
* Procedure:
While depressing the CURSOR MODE button, press the power
[I/
u
] button to turn on the main power. The message MUSIC
DEMO appears and demonstration is performed automatically.