STR-DG520 - Sony Audio Service Manual (repair manual). Page 12

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STR-DG520
12
SECTION  3
TEST  MODE
AM CHANNEL STEP 9 kHz/10 kHz SELECTION MODE
(US, Canadian model only)
* Either the 9 kHz step or 10 kHz step can be selected for the AM 
channel step.
* Procedure:
Turn the [INPUT SELECTOR] control to set AM and press the 
[
?/1
] button to turn off the main power.
While depressing the [TUNING MODE] button, press the [
?/1
button to turn on the main power.
Either the message “9k STEP” or “10k STEP” appears for a mo-
ment and select the desired step.
VACUUM FLUORESCENT DISPLAY TEST MODE
* All fl uorescent segments are tested.
When this test is activated, all segments light on at the same time, 
then each segment lights on one after another.
* Procedure:
While depressing the [TUNING MODE] and the [DISPLAY] 
buttons simultaneously, press the [
?/1
] button to turn on the 
main power.
1.  ALL segments light on.
2.  Turn the [INPUT SELECTOR] control, confi rm display.
3.  Turn the [INPUT SELECTOR] control, confi rm display.
4.  Turn the [INPUT SELECTOR] control, all segments light off.
SOUND FIELD CLEAR MODE
* The preset sound fi eld is cleared when this mode is activated.
Use this mode before returning the product to clients upon com-
pletion of repair.
* Procedure:
While depressing the [2CH] button, press the [
?/1
] button to turn 
on the main power.
The message “S.F. CLR.” appears for a moment and initialization 
is performed.
SOFTWARE VERSION DISPLAY MODE
* The software version is displayed.
* Procedure:
While depressing the [SPEAKERS (ON/OFF)] and the [DIS-
PLAY] buttons simultaneously, press the [
?/1
] button to turn on 
the main power.
The model name, destination and the software version are dis-
played for a moment.
KEY CHECK MODE
* Button check
* Procedure:
While depressing the [SPEAKERS (ON/OFF)] and the [2CH] 
buttons simultaneously, press the [
?/1
] button to turn on the 
main power.
Either the message “REST 13” appears.
Every pressing of any button other than the [
?/1
] counts down 
the buttons. The buttons which are already counted once are not 
counted again. When all buttons are pressed “REST 00” ap-
pears.
SWAP ALL MODE
* The signal will be swap to all channel so that all speaker will 
have sound output.
* Procedure:
1.  While depressing the [SPEAKERS (ON/OFF)] and the 
[A.F.D.] buttons simultaneously, press the power [
?/1
] button 
to turn on the main power.
2.  “SWAP” appears. (No change while displayed.)
SHIPMENT MODE
All preset contents are reset to the default setting.
* Procedure:
1.  While depressing the [SPEAKERS (ON/OFF)] and the [MU-
SIC] buttons simultaneously, press the power [
?/1
]  button to 
turn on the main power.
2.  “CLEARED” appears and switch off the set.
RE-BOX CLASSIFICATION TEST MODE
* Procedure:
1.  While pressing the [MEMORY/ENTER] and the [INPUT 
MODE] buttons simultaneously, press the power [
?/1
] button 
to turn on the main power.
2. “R.BOX
[][][]
xxx” appears.
3.  xx indicates number of times set powered on.
4.  Press any button or power off the set to release test mode.
L
SW
C
R
SL
S
SR
SBL SB SBR
LFE
SP A 
NEO:6
COAX
HDMI
DEX
DTS -ES
x
II
PL
RDS ST
CAT
96/24
MONO
D.RANGE
SAT
D D
D D
PL OPT
D D
dB
Hz
k
ft.
m
MHz
MEMORY
SP B
L
R
S
LFE
NEO:6
COAX
x
RDS
MONO
D.RANGE
k
m
MHz
SP B
SW
C
SL
SR
SBL SB SBR
D
DTS
ST
CAT
D D
PL
D D
dB
Hz
ft.
MEMORY
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