Sony STR-DE845 - Manual (Page 9)

9
SECTION 3
TEST MODE
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 depressing, the
[A.F.D] and the [DIMMER] buttons si-
multaneously, press the power `/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.
Factory Set Mode
All preset contents are reset to the default setting.
Procedure:
1. While depressing the
[SET UP] , and the [DIMMER] buttons
simultaneously, press the power `/1 button to turn on the
main power. The message Factry Set 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:
1. While depressing the
[SET UP] button simultaneously, press
the power `/1 button to turn on the main power. The ma-
chine enters the DEMO mode.
DEMO mode: Wait a while, then the demonstration starts. If
the power
`/1 button is pressed often the demonstration has
started, the power is turned off, and the demonstration resumes
if the power
`/1 button is pressed again.
ALL CLEAR mode; Press the [A.F.D] , [SOUND FIELD MODE
+ ] , and `/1 buttons.
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:
1. While depressing the
[SOUND FIELD MODE + ] button, press
the power `/1 button to turn on the main power. The mes-
sage 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. Turn off the main power.
2. While depressing the
[TUNING+] button or the [PRESET
TUNING +] button, press the power `/1 button to turn on the
main power.
3. Either the message AM 9kHz Step or AM 10kHz Step appears.
Select the desired step.
DSP Test Mode
It tests whether the DSP works correctly or not. When the DSP
test is activated, the test data is output from the DSP (IC1401:
CXD2712R) of the DIGITAL board and is written in the RAM
(IC1402: IDT71V016S). When the test data is read from the RAM
by the DSP, the data output must be equivalent to the original data.
If they disagree, an error is triggered. Errors can be caused by the
broken data line or defective soldering.
Procedure:
1. While pressing the
[SOUND FIELD MODE + ] and [DIMMER]
buttons, press the `/1 button to enter the DSP test mode.
2. The message DSP TEST MODE appears. When an error oc-
curs, the message DSP2 ERROR is displayed. When there is
no error, the message DSP2 NO ERROR appears and the 1
kHz signal is output to all channels.
3. Use the [MUTING] button, when selecting the SINE WAVE,
THROUGH, or IMPLUSE mode.
Version Mode
When this mode is used, the microprocessor version number is
displayed.
Procedure:
1. Press the
`/1 button while pressing the [MUTING] , and [DIM-
MER] buttons to turn on the power. The microprocessor ver-
sion number appears as follows.
( )
( )
( )