Sony STRDG820 - STR AV Receiver, Service Manual

Page: 12 / 96

STR-DG820
12
SECTION 4
TEST MODE
DIGITAL MEDIA PORT TEST
Procedure:
1. Connect the DMPORT check jig (P/N: J-2501-309-A) with the
DMPORT jack (CN2226) on the DIGITAL AUDIO board.
2. While pressing the [MEMORY/ENTER] and [A.F.D.] buttons,
press the [POWER] button to turn on the main power.
3. The message “DMPORT T.” appears on the
fl
uorescent indica-
tor tube and enter the digital media port test mode. (Con
fi
rma-
tion of communication line)
When “NO DETECT”, “UART NG” and “UART TO” are dis-
played on the
fl
uorescent indicator tube, con
fi
rm the connec-
tion of the DMPORT check jig, and enter the mode again.
Each time the [
>
] button on the remote commander is
pressed, the connect check and adaptor version check are
switched.
Press the [
.
] button on the remote commander, connected
con
fi
rmation of the DMPORT check jig is done again.
4. To a pinjack of the DMPORT check jig input information rele-
vant to audio signal (sine-wave 1.0V rms) and composite video
signal (white 100% 1.0Vp-p, color bar, etc.).
5. Con
fi
rm the output of speakers and monitor TV. (Con
fi
rmation
of analog signal)
6. To release from this mode, press the [
x
] button on the remote
commander.
XM FACTORY TEST MODE
(US and Canadian models only)
Mode to con
fi
rm operation of XM. Doing display of ID of XM
antenna and output of audio signal that XM antenna generates, it is
con
fi
rmed that there are no problems in the communication of the
XM antenna and the tranmission of the audio signal.
Procedure:
1. The XM antenna was connected, while pressing the [TUNING
MODE] and [MOVIE] buttons, press the [POWER] button to
turn on the main power.
2. Whenever the [DISPLAY] button is pressed, the output of the
audio signal of 1 kHz L/R, 20 Hz L/R, 5 kHz L/R, muting, 1
kHz L and 1kHz R are switched.
COMMAND MODE CHANGE MODE
The command mode of the remote-commander which this set re-
ceives can be changed.
Procedure:
1. While pressing the [2CH/A. DIRECT] button, press the [POW
ER] button to turn on the main power.
2. Either the message “C.MODE AV1” or “C.MODE AV2” ap-
pears. Select the desired mode.
FLUORESCENT INDICATOR TUBE PATTERN CHECK
MODE
All
fl
uorescent 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 pressing the [TONE MODE] and [A.F.D.] buttons, press the
[POWER] button to turn on the main power.
2. All segments turn on.
MEMORY CLEARING 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 pressing the [TONE MODE] and [2CH/A.DIRECT]
buttons, press the [POWER] button to turn on the main pow-
er.
2. The message “CLEARING” appears and the memories are re-
set to the default values.
3. When done, the message “CLEARED” appears.
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 completion
of repair.
Procedure:
1. While pressing the [MUSIC] button, press the [POWER] but-
ton to turn on the main power.
2. The message “S. F. CLEAR” appears and initialization is per-
formed.
TUNER AM STEP CHANGE MODE
(US and Canadian models only)
Either the 9 kHz step or 10 kHz step can be selected for the AM
channel step.
Procedure:
1. Press the [POWER] button to turn on the main power.
2. Turn the [INPUT SELECTOR] dial to select the “AM TUNER”.
3. Press the [POWER] button to turn off the main power.
4. While pressing the [TUNING MODE] button, press the [POW
ER] button to turn on the main power.
5. Either the message “AM9k Step” or “AM10k Step” appears, se-
lect the desired step.
HISTORY MODE
The state that the set is used is memorized.
Procedure:
1. While pressing the [MEMORY/ENTER] and [MUSIC] but-
tons, press the [POWER] button to turn on the power and
“HISTORY” is displayed.
2. Each time the [
M
] [
m
] key of remote commander is pressed,
the item is switched in order as follows.
color
pattern
generator
DMPORT
check jig
(Part No.:
J-2501-309-A)
J001
AF
oscillator
set
TV
monitor
FL/FR
speaker
DIGITAL AUDIO board
CN2226
MAIN board
TB601
VIDEO board
J210
Items Display
Protector count COUNT XX
Total single power on time S xxHxxM
Sound
fi
eld xxxxxxxxxx
Input function xxxxxxxxxx
Input mode xxxxxxxxxx
Digital select xxxxxxxxxx
Stream information xxxxxxxxxx
Signal con
fi
guration CONF xxxxx
Headphones HEADPH xxx
Volume VOL xxx
Bass BASS xxdB
Treble TREB xxdB
Level FL/FR FL/R xx xx
Level SL/SR SL/R xx xx
Level CT/SW C/SW xx xx
Level BL/BR BL/R xx xx
Total power on time T xxHxxM
Muting MUTING xxx
Power on counter
(Rebox test mode)
REBOX xx