Sony STR-DH720 Service Manual page 10

STR-DH720/DH720HP
HISTORY MODE
The state that the set is used is memorized.
* Procedure:
1. While pressing the [INPUT MODE] and [MUSIC] buttons,
press the [ ] button to turn on the power and "HISTORY"
?/1
is displayed.
2. Each time the [ r ] [ R ] 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
Level LH/RH
Total power on time
Muting
Power on counter
(Rebox test mode)
Protector Type
Temperature record
10
Display
COUNT XX
XXXXXHXX 01
SND FLD
FUNCTION
INP MODE
DIG IN
STREAM
CO XXXXX
HP XXX
VOL XX
BASS XXX
TREB XXX
F XXXXXX
S XXXXXX
CWXXXXXX
B XXXXXX
H XXXXXX
XXXXXHXX 02
MUTE XXX
REBX.XXXX
PROTXXXX
TEM XXXX
DCAC TEST MODE
* Procedure:
1. While pressing [INPUT MODE] and [MOVIE] buttons, press
the [?/1] button to turn on the main power.
2. The message "SOURCE" or "MIC" appears.
Repeat step 1 to toggle between "SOURCE" and "MIC".
SOURCE: normal mode
MIC: mode that output audio from mic input
USB UPDATE TEST MODE
To update Main MCU, Video MCU, DSP serial fl ash and Hudson
II software through USB.
* Procedure:
1. Plug in USB device in power off condition.
2. While pressing the [TONE MODE] and the [DISPLAY]
buttons, press the [ ] button to turn on the main power.
?/1
3. The message "UPDATING" appears.
4. If the updating progress succeeds, the message "COMPLETE"
appears.
5. If the updating progress fails, the message "ERROR" appears.
USB UPDATE VERSION MODE
Function that displays the version number to check whether USB
update is necessary or not.
* Procedure:
1. While pressing [TONE MODE] and [DIMMER] buttons,
press the [ ] button to turn on the main power.
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2. The message "VER X.XXX" is displayed. "X.XXX" is
calculated by adding all fi rmware version.
Example:
(MAIN ver. + DSP ver. + HDMI ver. + FARO ver. + 6)/10 =
Displayed version
MAIN = 1.02, DSP = 1.01, HDMI = 1.00, FARO = 1.03
↓
(1.02 + 1.01 + 1.00 + 1.03 + 6)/10 = 1.006
1.006 = X.XXX