SRS-X77 - Sony Audio Service Manual (repair manual). Page 30

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SRS-X77
30
SECTION  3
TEST  MODE
Buttons and indicators position:
Rear of the unit
FIRMWARE  VERSION  AND  WIFI  MODULE  CHAN-
NEL  SETTING  DISPLAY  MODE
1. Firmware version display
It can check the fi rmware version.
Procedure:
1.  Press the [?/1] button to turn the power on.
2.  While pressing the [WPS] button, touch the [VOL –] button.
3.  Touch the [AUDIO IN] 
→ [    PAIRING] → [VOL –] button 
in order (in less than 3 seconds).
4. It 
enters 
the 
system 
fi rmware version display mode, the [?/1] 
indicator lights off and the [AUDIO IN] indicator blinks.
light off
blinking
Button input settings under operation of fi rmware ver-
sion display mode:
• 
Touch the [AUDIO IN] button.
 System 
fi rmware version display mode ([AUDIO IN] indicator 
blinks)
• 
Touch the [NETWORK] button.
 WiFi 
module 
fi rmware version display mode ([NETWORK] 
indicator blinks)
• 
Touch two buttons of [    PAIRING] and [VOL +] simultaneously.
 Bluetooth 
module 
fi rmware version display mode ([    PAIR-
ING] indicator blinks)
• 
Touch the [    PAIRING] button.
 
The major version in each fi rmware version display mode is 
displayed.
• 
Touch the [VOL –] button.
 
The minor version (upper) in each fi rmware version display 
mode is displayed.
• 
Touch the [VOL +] button.
 
The minor version (lower) in each fi rmware version display 
mode is displayed.
Each fi rmware version is shown by the blinking frequency of the 
[?/1] indicator.
blinking
Example: When the version is “1.23”
When touching the [    PAIRING] button, the [?/1] indicator 
blinks 1 time (cycle of the 1 second).
When touching the [VOL –] button, the [?/1] indicator blinks 2 
times (cycle of the 1 second).
When touching the [VOL +] button, the [?/1] indicator blinks 3 
times (cycle of the 1 second).
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