NW-A25, NW-A25HN, NW-A26HN, NW-A27HN - Sony Audio Service Manual (repair manual). Page 5

NOTE  OF  THE  SUPPORT  HP  REPLACING
When you replace the support HP, peel off the sheet (speaker) label 
from the old support HP before it replace it, and paste it to the new 
support HP.

ABOUT  WORKING  OF  THE  BOARD  REPLACING
When replaced the MAIN board and SW board, be sure to carry 
out the following contents.

Note 1:  The SW board cannot replace with single. Be sure to replace the 

MAIN board and the SW board simultaneously.

To do the work, need the following tools.

Note 2:  Confi rm the method of obtaining the tool to the each service head-

quarters.

Note 3:  “yyyymmdd” of each fi les name represents the date of release.
Note 4:  Each tools, use for the OS of Windows 7 or later.
Note 5:  If you want to run the each tools, please close the SonicStage/x-

Application/Media Go etc. applications.

• Destination 

setting

Change_Destination_NWA20_yyyymmdd.zip

• Initial 

setting

Color_Init_Setting_NWA20_yyyymmdd.zip

• 

Destination and supplied headphones identifi cation
Determination_HP_NWA20_yyyymmdd.zip

• 

NC gain setting
NC_gain_Setting_NWA20_yyyymmdd.zip

Procedure:
1.  On PC, unzip the prepared tools.
2.  Copy the unzip folder to root directory of C drive on PC.

Note 6: The folder can be saved any drive as long as the folder path is 

with English (one byte character).

 

    Described with the example that “the folders were saved under 

root directory of C drive” on this service manual.

Work according to the following order.

If the MAIN board and the SW board replaced simultaneously:
Destination setting (use for the “Destination setting” tool)


Initial setting (use for the “Initial setting” tool)


Confi rm settings (use for the “Destination and supplied head-
phones identifi cation” tool)

If the MAIN board is replaced alone:
NC parameter setting (use for the “NC gain setting” tool)

2-1. Destination setting
Perform the destination setting and the initial setting of the main 
unit simultaneously.
The settings by the supplied headphones, or the headphones sup-
plied or not are different. Please refer to “METHOD OF DISTIN-
GUISHING THE “WALKMAN” MAIN UNIT” on page 4 in ad-
vance.

Note 7: Contents those have been recorded in this unit all will be erased.

IMPORTANT:
Be sure to use the destination setting tool select the correct 
destination. It is a compliance violation to change the destination 
to other regions.

Used tool:
Change_Destination_NWA20_yyyymmdd.zip

Procedure:
1.  Connect “WALKMAN” to PC.
 

(The power supply of “WALKMAN” is automatically turned 
on)

2.  Open the my computer window on PC, and confi rm  how 

“WALKMAN” is recognized on PC.

 

In the following example, “WALKMAN” is recognized by 
MSC connection. The check of the drive letter (at this exam-
ple, it is “F”) is necessary.

3. Confi rm the destination and the supplied headphone of this 

unit.

 

(Refer to “METHOD OF DISTINGUISHING THE “WALK-
MAN” MAIN UNIT” on page 4)

4.  From in the “Change_Destination_NWA20_yyyymmdd” fold-

er, copy the folder of specifi cations that you checked in step 3 
to root directory of C drive on PC.

 

XX_EXHWM : for NW-A25HN/A26HN/A27HN

 

XX_NC3X 

: Not used in this model

 

XX_NOHP 

: for NW-A25

• 

“XX” of represents destination.

CEW

CEW2

E (A25)

E

E (A26HN)

E

EE

EE

CH

CN

Note 8: NW-A25 (Korean model) is used “E_NOHP”.
 

    NW-A25HN (Korean model) and NW-A27HN (Korean model) 

are used “CEW2_EXHWM”.

5.  Start the command prompt application software, and move to 

the folder in which the destination setting tool which wants to 
write in is stored.

 

(In this example, “cd c:\CEW2_EXHWM” is inputted)

C:\Users\XXXXX>cd c:\CEW2_EXHWM

C:\CEW2_EXHWM>

– Continued on next page –