Test Mode - Sony STR-K990 Service Manual

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 2CH button, press the power ?/1
button to turn on the main power.
2. The message "S.F. CLR." appears and initialization is
performed. (3 second)
SOFTWARE VERSION DISPLAY MODE
The software version is displayed.
Procedure:
1. While depressing the SPEAKERS (OFF/A/B/A+B) and the
DISPLAY buttons simultaneously, press the power ?/1
button to turn on the main power.
2. The model name, destination and the software version are
displayed. (8 second)
KEY CHECK MODE
Button check
Procedure:
1. While depressing the SPEAKERS (OFF/A/B/A+B) and the
2CH buttons simultaneously, press the power ?/1 button to
turn on the main power.
"REST 13" appears.
2. Every pressing of any button other than ?/1 counts down
the buttons. The buttons which are already counted once are
not counted again.
3. When all buttons are pressed "REST 00" 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 depressing the TUNING MODE and the DISPLAY
buttons simultaneously, press the power ?/1 button to turn
on the main power.
2. All segments turn on.
SP A ; D EX ; PL II x ;
LFE
SW
SP B HDMI COAX
L C R
SL S SR
SBL SB SBR
3. Turn the INPUT SELECTOR dial.
LFE x
SP B
L R
S
4. Turn the INPUT SELECTOR dial once again.
; D ;
SW
C
SL SR
SBL SB SBR
5. Turn the INPUT SELECTOR dial once again. All segments
turn off.
6. Every turning of the INPUT SELECTOR dial turns on each
segment one after another in the same order.
SECTION 2

TEST MODE

PL OPT DTS-ES 96 / 24 CAT RDS ST
MEMORY
NEO:6 SAT D.RANGE MONO
dB
k Hz
mft.
MHz
RDS
COAX NEO:6 D.RANGE MONO
k
m
MHz
PL DTS CAT
MEMORY
dB
Hz
ft.
SWAP ALL MODE
The signal will be swapped to all channels so that all speakers will
have sound output.
Procedure:
1. While depressing the SPEAKERS (OFF/A/B/A+B) and the
A.F.D. buttons simultaneously, press the power ?/1 button
to turn on the main power.
2. "SWP. ALL" appears. (No change while displayed.)
SHIPMENT MODE
All preset contents are reset to the default setting.
Procedure:
1. While depressing the SPEAKERS (OFF/A/B/A+B) and the
MUSIC buttons simultaneously, press the power ?/1 but-
ton to turn on the main power.
2. "CLEARED" appears and switch off the set.
PROTECTOR
If an error occurs, the "Protector Display" will flash for a while and
the power is turned OFF.
Procedure:
1. While depressing the TUNING MODE and the A.F.D.
buttons simultaneously, press the power ?/1 button to turn
on the main power.
2. "PROT. EVER" appears (3 seconds).
DCAC FACTORY TEST MODE
DCAC Factory Test mode have two stages:
1. DCAC DSP Data Line Checking
2. DCAC board Checking
Start
DSP Data Line
Check
Factory Test System Setup
SPK Front Left
1. When power off :
Press the three buttons MEMORY/ENTER + MOVIE +
?/1 .
ST
"DCAC[]FTM" appears.
Afterward, press the TUNING MODE to start DCAC factory
test mode.
STR-K990
Pass Pass
Auto Cal Mic
Check
Receiver
DCAC MIC
END
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