Read Sony NWZ-S754 / NWZ-S755 Service Manual online
NWZ-S754/S755
7
• When MOTHER board is replaced alone
1. NC parameter setting
1. NC parameter setting
1-1. Outline
The unit has Digital Noise Cancelling function. Therefore, NC pa-
rameter data for each channel should be installed into NAND IC
when replacing the MOTHER board.
The unit has Digital Noise Cancelling function. Therefore, NC pa-
rameter data for each channel should be installed into NAND IC
when replacing the MOTHER board.
Note 1: The EMMC Board is supplied as EMMC Board + MOTHER
Board, because nobody knows the NC parameter data when the
EMMC board is defective.
EMMC board is defective.
Note 2: When the EMMC and MOTHER boards are replaced at the same
time, NC parameter setting need not be executed.
The label having the NC parameter data for each channel is at-
tached on CPU (EM1) IC of complete MOTHER board (for SER-
VICE).
tached on CPU (EM1) IC of complete MOTHER board (for SER-
VICE).
L= 13
R= 12
R= 12
– Complete MOTHER Board (for SERVICE) –
NC parameter
1-2. Preparation
Note 1: Please use this Tool in Windows XP or later.
Note 2: Please install Windows Media Player 11 or later to make the unit
Note 2: Please install Windows Media Player 11 or later to make the unit
recognize as MTP.
Note 3: Confi rm the method of obtaining the NC parameter setting tool to
the service headquarters.
Procedure:
1. Unzip the NC parameter setting tool to get “NWZS75X_NC-
1. Unzip the NC parameter setting tool to get “NWZS75X_NC-
Setting” folder.
2. Copy the folder in step 1 under C Drive on PC.
Remark: Above folder in step 2 can be saved any drive as long as the
folder path is with English (one byte character).
Described with the example that “the folder was saved under C
Drive” on this service manual.
Described with the example that “the folder was saved under C
Drive” on this service manual.
1-3. How to use the NC parameter setting tool
Note 1: Please use this tool after closing other application software.
Procedure:
1. Turn on power of the WALKMAN, and connect it to PC con-
1. Turn on power of the WALKMAN, and connect it to PC con-
fi rm the drive letter information of WALKMAN (Example: F
Drive).
Drive).
2. Start the command prompt application software, and change
the folder pass to your desired folder (Example: c:\NW-
ZS75X_NCSetting).
ZS75X_NCSetting).
3. Input “updating-mtp” and press the Enter key on PC. If the fol-
lowing message is displayed, input “y” and press the Enter key
on PC.
on PC.
4. If the following message is displayed, input the NC parameter
data for L-ch confi rmed in “1-1. Outline” and press the Enter
key on PC (Example: 13).
key on PC (Example: 13).
5. If the following message is displayed, input the NC parameter
data for R-ch confi rmed in “1-1. Outline” and press the Enter
key on PC (Example: 12).
key on PC (Example: 12).
6. If the following message is displayed, input the “yes” and and
press the Enter key on PC.
7. The WALKMAN reboots automatically after the destination
data is updated. After rebooting, check that connecting USB
(MTP) is displayed on the liquid crystal display of the WALK-
MAN.
(MTP) is displayed on the liquid crystal display of the WALK-
MAN.
8. Input “EXIT” to close the command prompt application soft-
ware.
9. Disconnect the WALKMAN from PC.
Note 2: Then, re-connect the main unit to PC again to delete the following
two fi les inside NAND IC on the unit.
NCGainValue.dat
NW_WM_FW.UPG
After that, disconnect the main unit from PC.
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