Test Mode - Sony STR-DG820 Service Manual

STR-DG820
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. (Confi rma-
tion of communication line)
When "NO DETECT", "UART NG" and "UART TO" are dis-
played on the fl uorescent indicator tube, confi 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
confi 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. Confi rm the output of speakers and monitor TV. (Confi rmation
of analog signal)
6. To release from this mode, press the [x] button on the remote
commander.
DIGITAL AUDIO board
J001
color
DMPORT
pattern
check jig
generator
(Part No.:
J-2501-309-A)
AF
oscillator
XM FACTORY TEST MODE
(US and Canadian models only)
Mode to confi rm operation of XM. Doing display of ID of XM
antenna and output of audio signal that XM antenna generates, it is
confi 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.
12
SECTION 4

TEST MODE

VIDEO board
CN2226
J210
TV
monitor
set
FL/FR
speaker
MAIN board
TB601
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.
Items
Protector count
Total single power on time
Sound fi eld
Input function
Input mode
Digital select
Stream information
Signal confi guration
Headphones
Volume
Bass
Treble
Level FL/FR
Level SL/SR
Level CT/SW
Level BL/BR
Total power on time
Muting
Power on counter
(Rebox test mode)
Display
COUNT XX
S xxHxxM
xxxxxxxxxx
xxxxxxxxxx
xxxxxxxxxx
xxxxxxxxxx
xxxxxxxxxx
CONF xxxxx
HEADPH xxx
VOL xxx
BASS xxdB
TREB xxdB
FL/R xx xx
SL/R xx xx
C/SW xx xx
BL/R xx xx
T xxHxxM
MUTING xxx
REBOX xx