SRS-BTV25 - Sony Audio Service Manual (repair manual). Page 17

SRS-BTV25

VERSION  DISPLAY  MODE
This mode can display the soft version and bluetooth module ver-
sion.

Procedure:
1.  Press the [

?/1

] key to turn the power on.

2.  Press three keys of the [BOOST], [BLUETOOTH] and [VOL 

–] simultaneously, then press the key in order of [BOOST] → 
[BLUETOOTH] → [VOL –] within three seconds.

3.  [POWER] LED blinks (cycle of the 500 millisecond), and en-

ter the version display mode.

4.  Press the [BOOST] key to enter the soft version display mode. 

Because LED blinks in order of [BOOST] (major version) → 
[POWER] (fi rst digit of minor version) → [ ] (second digit of 
minor version), a soft version is shown. It returns to the state 
of step 3 after the version is displayed.

 

Example  : When the soft version is “1.23”

 

[BOOST]  LED blinks 1 time (cycle of the 1 second)

 

[POWER]  LED blinks 2 times (cycle of the 1 second)

 

[ ] 

LED blinks 3 times (cycle of the 1 second)

5.  Press the [BLUETOOTH] key to enter the bluetooth mod-

ule version display mode. Because LED blinks in order of 
[BOOST] (major version) → [POWER] (fi rst digit of minor 
version)  →  [ ] (second digit of minor version), a bluetooth 
module version is shown. It returns to the state of step 3 after 
the version is displayed.

 

Example  : When the bluetooth module version is “4.50”

 

[BOOST]  LED blinks 4 times (cycle of the 1 second)

 

[POWER]  LED blinks 5 times (cycle of the 1 second)

 

[ ] 

LED doesn’t blink

Releasing method:
Press the [

?/1

] key to return the power off, or press three keys of 

the [BOOST], [BLUETOOTH] and [VOL –] simultaneously, then 
press the key in order of [BOOST] → [BLUETOOTH] → [VOL 
–] within three seconds.

RESET  MODE (FOR  USER)
This mode can initialize the microprocessor.
(The contents reset are the same as that of “RESET MODE (FOR 
MAKER)”)

Procedure:
1.  Press the [

?/1

] key to turn the power on.

2.  Press two keys of the [BOOST] and [BLUETOOTH] simulta-

neously for more than fi ve seconds.

3.  The [POWER] LED blinks for two seconds, and the initializa-

tion of microprocessor is executed.

RESET  MODE (FOR  MAKER)
This mode can initialize the microprocessor.
(The contents reset are the same as that of “RESET MODE (FOR 
USER)”)

Procedure:
1.  Press the [

?/1

] key to turn the power on.

2.  Press three keys of the [BOOST], [BLUETOOTH] and [VOL 

+] simultaneously, then press the key in order of [BOOST], 
[BLUETOOTH] and [VOL +] within three seconds.

3.  The [POWER] LED blinks for more than two seconds, and the 

initialization of microprocessor is executed.

Note 1: When replacing MAIN board, please also exchange LOUDSPEAKER (5.6 cm) (WOOFER) (SP1) and LOUDSPEAKER (20 mm) (TWEETER) 

(SP2) simultaneously.

5

6 battery connector

7 MAIN board

1 connector

2 connector

3 connector

4 three screws

u 6)

Note 2: Arrange the wire under the board.