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NW-A25/A25HN/A26HN/A27HN
8
2-4. NC gain setting
This unit has digital noise cancelling function. Therefore, NC pa-
rameter data for each channel should be writing into NAND IC
when replacing the MAIN board.
This unit has digital noise cancelling function. Therefore, NC pa-
rameter data for each channel should be writing into NAND IC
when replacing the MAIN board.
Note 10: The SW board is supplied as SW board + MAIN board, because
unreadable the NC parameter data of MAIN board when the SW
board is defective.
board is defective.
Note 11: When the SW board and MAIN board are replaced simultane-
ously, NC parameter setting need not be performed.
NC parameter setting value label:
The label having the NC parameter setting value for each channel
is pasted on CPU of MAIN board.
The label having the NC parameter setting value for each channel
is pasted on CPU of MAIN board.
– MAIN Board (Side A) –
L= XX
R= YY
R= YY
NC parameter
setting value
setting value
Used tool:
NC_gain_Setting_NWA20_yyyymmdd.zip
NC_gain_Setting_NWA20_yyyymmdd.zip
Procedure:
1. Connect “WALKMAN” to PC.
1. Connect “WALKMAN” to PC.
(The power supply of “WALKMAN” is automatically turned
on)
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.
MSC connection. The check of the drive letter (at this exam-
ple, it is “F”) is necessary.
3. From in the “NC_gain_Setting_NWA20_yyyymmdd” folder,
copy the folder of “ICX1275” to root directory of C drive on
PC.
PC.
4. Start the command prompt application software, and move to
the folder in which the NC gain setting tool which wants to
write in is stored.
write in is stored.
(In this example, “cd c:\ICX1275” is inputted)
C:\Users\XXXXX>cd c:\ICX1275
C:\ICX1275>
5. Input the following command according to the information
checked at step 2, and press the Enter key on PC.
“updating.bat
f:”
(“f:” is drive letter)
C:\ICX1275>updating.bat f:
6. Confi rm that the following message has been displayed, and
input “y”, and press the Enter key on PC.
C:\ICX1275>updating.bat f:
###
### NC Gain Setting Tool
###
### Now Setting NC Gains to f: 's walkman.
### Continue? (y/n)y
(Using 2-byte characters in part, it may not be displayed correctly)
7. Confi rm that the following message has been displayed, and
input the NC parameter setting value for L-ch confi rmed in
“NC parameter setting value label” and press the Enter key on
PC.
“NC parameter setting value label” and press the Enter key on
PC.
(In this example, “28” is inputted)
### Continue? (y/n)y
Please input L ch NC Gain ( Min: 0, Max:50 ): 28
(Using 2-byte characters in part, it may not be displayed correctly)
8. Confi rm that the following message has been displayed, and
input the NC parameter setting value for R-ch confi rmed in
“NC parameter setting value label” and press the Enter key on
PC.
“NC parameter setting value label” and press the Enter key on
PC.
(In this example, “30” is inputted)
### Continue? (y/n)y
Please input L ch NC Gain ( Min: 0, Max:50 ): 28
Please input R ch NC Gain ( Min: 0, Max:50 ): 30
(Using 2-byte characters in part, it may not be displayed correctly)
9. Confi rm that the following message has been displayed, and
input “yes”, and press the Enter key on PC.
(Displayed values in the following fi gure are example)
Please input L ch NC Gain ( Min: 0, Max:50 ): 28
Please input R ch NC Gain ( Min: 0, Max:50 ): 30
Now writing NCgain Lch: 28 , Rch: 30 (yes/no) : yes
(Using 2-byte characters in part, it may not be displayed correctly)
10. The “WALKMAN” reboots automatically after the NC param-
eter setting value is updated. After rebooting, the updating is
success when USB connection screen is displayed on the liq-
uid crystal display of the “WALKMAN”.
success when USB connection screen is displayed on the liq-
uid crystal display of the “WALKMAN”.
After rebooting, check that USB connection screen is dis-
played on the liquid crystal display of the “WALKMAN”.
played on the liquid crystal display of the “WALKMAN”.
11. Input “exit” and press the Enter key on PC to close the com-
mand prompt application software.
C:\ICX1275>exit
12. Disconnect the “WALKMAN” from PC.
13. Press the [BACK] key for more 1.5 seconds, the home menu is
13. Press the [BACK] key for more 1.5 seconds, the home menu is
displayed.
14. Slide the [HOLD] switch from OFF to ON.
15. Press the key as following order.
15. Press the key as following order.
[
b
] → [VOL +] → [
B
] → [
V
] → [BACK] → [
B
] → [
u
] →
[OPTION] → [VOL –] → [
v
]
16. The set reboots and the color bar is displayed on the liquid
crystal display.
17. Enter the test mode when any keys are pressed in the state of
step 16, and slide the [HOLD] switch from ON to OFF.
– Continued on next page –
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