Sony NWZ-S754 / NWZ-S755 Service Manual ▷ View 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.
NWZ-S754/S755
8
COLOR VARIATION
Model
Destination
Color
Black
White
Light
Pink
Blue
Gold
NWZ-S754
Canadian
z
–
–
–
–
AEP, UK
z
z
z
z
–
East European
z
–
–
z
z
E, Australian
z
z
z
z
–
Mexican
z
–
–
–
–
Chinese
z
z
–
–
z
NWZ-S755
AEP, UK
z
z
z
z
–
East European
z
–
–
–
–
E, Australian
z
–
–
–
–
10. Enter the test mode referring to “1. SETTING THE TEST
MODE” (page 17). Then, execute “4-10-1. Microphone gain
(L-ch) adjustment” and “4-10-2. Microphone gain (R-ch) ad-
justment” (page 27), and check if the data is updated properly.
(L-ch) adjustment” and “4-10-2. Microphone gain (R-ch) ad-
justment” (page 27), and check if the data is updated properly.
MATAPP (X.XX.XX)
POWER
AUDIO
VIDEO
VIDEO OUT
OTHER
CLESTE
DAC
DIREC
FM
NC
NC
SHUTDOWN
EXITTEST
GAIN-L
GAIN-R
NCHPCHK
GAIN-R
NCHPCHK
NC GAIN-Lcn
13
MODE
-1
NC GAIN-Rcn
12
MODE
-1
NWZ-S754/S755
9
SECTION 2
DISASSEMBLY
• This set can be disassembled in the order shown below.
2-1. DISASSEMBLY FLOW
2-8. 5PIN HP ASSY (HPJ1)
(Page 13)
2-9. LCD ASSY (LCD1)
(Page 14)
2-12. BATTERY ASSY (BAT1)
(Page 16)
2-11. VOL KEY ASSY
(Page 16)
2-10. MOTHER BOARD
(Page 15)
SET
2-3. MAIN BLOCK
(Page 11)
2-4. MECHANICAL FRONT ASSY
(Page 11)
2-5. OPEN THE SHORT-LAND
(Page 12)
2-6. EMMC BOARD
(Page 12)
2-7. SUPPORT (M)
(Page 13)
2-2. PANEL (REAR) ASSY BLOCK
(Page 10)
NWZ-S754/S755
10
Note: Follow the disassembly procedure in the numerical order given.
2-2. PANEL (REAR) ASSY BLOCK
4
panel (rear) assy block
front panel block
Right side:
Left side:
1
two screws
(M1.4
u 5.5)
3
six claws
5
two claws
6
panel (rear) assy block
2
Insert your nail in the gap between front
panel block and panel (rear) assy block.
Then slide it to arrow direction to remove
claws of panel (rear) assy block.
– Rear side view (bottom side) –
panel (rear) assy block
front panel block
2
Insert your nail in the gap between front
panel block and panel (rear) assy block.
Then slide it to arrow direction to remove
claws of panel (rear) assy block.
front panel block
support (hold)
switch
Note: When installing panel (rear) assy
block, the position of switch and
support (hold) is set and installed.
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