DOWNLOAD Sony NWZ-S754 / NWZ-S755 Service Manual ↓ Size: 1.15 MB | Pages: 34 in PDF or view online for FREE

Model
NWZ-S754 NWZ-S755
Pages
34
Size
1.15 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
nwz-s754-nwz-s755.pdf
Date
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NWZ-S754/S755
21
4-2-9.  Sound pressure regulation level check (SPCHK)
“1 kHz 0 dBs L-ch/R-ch VOLUME: 30” audio signal is outputted.
Checking method:
1.  Enter the test mode.
2.  Press the [
v
]/[
V
] keys to select the “AUDIO”, and press the 
[
B
] key to enter the minor item.
3.  Press the [
v
]/[
V
] keys to select the “SPCHK”.
4.  Press the [
u
] key, “1 kHz 0 dBs L-ch/R-ch VOLUME: 30”  
audio signal is outputted.
 
Screen display
AUDIO SPCHK
1kHz 0dBs L/Rch
HPOUT [ VOL: 30 ]
START
5.  Press the [BACK] key, return to minor item selection screen.
4-2-10.  Speaker check
Note: Not used for the servicing.
4-2-11.  User specifi cation contents playback 1 (USER1)
“/User1.oma” is reproduced.
Checking method:
1.  Enter the test mode.
2.  Press the [
v
]/[
V
] keys to select the “AUDIO”, and press the 
[
B
] key to enter the minor item.
3.  Press the [
v
]/[
V
] keys to select the “USER1”.
4.  Press the [
u
] key, “/User1.oma” is reproduced.
 
Screen display
AUDIO USER1
HPOUT [ VOL: 15 ]
XX:XX
START
    XX:XX : Repetition expert totaling time
5.  Press the [BACK] key, return to minor item selection screen.
4-2-12.  User specifi cation contents playback 2 (USER2)
“/User2.oma” is reproduced.
Checking method:
1.  Enter the test mode.
2.  Press the [
v
]/[
V
] keys to select the “AUDIO”, and press the 
[
B
] key to enter the minor item.
3.  Press the [
v
]/[
V
] keys to select the “USER2”.
4.  Press the [
u
] key, “/User2.oma” is reproduced.
 
Screen display
AUDIO USER2
HPOUT [ VOL: 15 ]
XX:XX
START
    XX:XX : Repetition expert totaling time
5.  Press the [BACK] key, return to minor item selection screen.
4-2-13.  User specifi cation contents playback 3 (USER3)
“/User3.oma” is reproduced.
Checking method:
1.  Enter the test mode.
2.  Press the [
v
]/[
V
] keys to select the “AUDIO”, and press the 
[
B
] key to enter the minor item.
3.  Press the [
v
]/[
V
] keys to select the “USER3”.
4.  Press the [
u
] key, “/User3.oma” is reproduced.
 
Screen display
AUDIO USER3
HPOUT [ VOL: 15 ]
XX:XX
START
    XX:XX : Repetition expert totaling time
5.  Press the [BACK] key, return to minor item selection screen.
NWZ-S754/S755
22
4-3.  Video (VIDEO)
 
Screen display
MPTAPP (X.XX.XX)
 POWER
 AUDIO
 
VIDEO  LCD
  VIDEO OUT  USER1
 
OTHER  USER2
 
CLESTE  USER3
 DAC
 DIREC
 FM
 NC
 SHUTDOWN
 EXITTEST
4-3-1.  LCD display check (LCD)
Screen display is checked.
Checking method:
1.  Enter the test mode.
2.  Press the [
v
]/[
V
] keys to select the “VIDEO”, and press the 
[
B
] key to select the “LCD”.
3.  Press the [
u
] key, all black is displayed on the screen.
4.  In this state, each time the [OPTION] key is pressed, the screen 
display changes in the following order.
  All black (default) 
→ Color bar (standard) → Color bar 
(brightness minimum) 
→ Color bar (brightness maximum) → 
All red 
→ All green → All blue → All white → Maximum 
drawing size confi rmation 
→ diagonal gradation (red) → di-
agonal gradation (green) 
→ diagonal gradation (blue) → di-
agonal gradation (white)
 
Maximum drawing size confi rmation:
 
All blue (All sides are red) is displayed. Whether red in all 
sides is seen is confi rmed.
5.  In this state, each time the [
B
] key is pressed, brightness min/
max/middle switch is performed.
6.  Press the [BACK] key, return to minor item selection screen.
4-3-2.  User specifi cation contents playback 1 (USER1)
“/User1.mp4” is reproduced.
Checking method:
1.  Enter the test mode.
2.  Press the [
v
]/[
V
] keys to select the “VIDEO”, and press the 
[
B
] key to enter the minor item.
3.  Press the [
v
]/[
V
] keys to select the “USER1”.
4.  Press the [
u
] key, “/User1.mp4” is reproduced.
 
Screen display
VIDEO USER1
HPOUT [ VOL: 15 ]
[ WIFI: OFF ]
[ CHARGE: AC ]
XX:XX
START
    XX:XX : Repetition expert totaling time
5.  Press the [BACK] key, return to minor item selection screen.
4-3-3.  User specifi cation contents playback 2 (USER2)
“/User2.mp4” is reproduced.
Checking method:
1.  Enter the test mode.
2.  Press the [
v
]/[
V
] keys to select the “VIDEO”, and press the 
[
B
] key to enter the minor item.
3.  Press the [
v
]/[
V
] keys to select the “USER2”.
4.  Press the [
u
] key, “/User2.mp4” is reproduced.
 
Screen display
VIDEO USER2
HPOUT [ VOL: 15 ]
[ WIFI: OFF ]
[ CHARGE: AC ]
XX:XX
START
    XX:XX : Repetition expert totaling time
5.  Press the [BACK] key, return to minor item selection screen.
4-3-4.  User specifi cation contents playback 3 (USER3)
“/User3.mp4” is reproduced.
Checking method:
1.  Enter the test mode.
2.  Press the [
v
]/[
V
] keys to select the “VIDEO”, and press the 
[
B
] key to enter the minor item.
3.  Press the [
v
]/[
V
] keys to select the “USER3”.
4.  Press the [
u
] key, “/User3.mp4” is reproduced.
 
Screen display
VIDEO USER3
HPOUT [ VOL: 15 ]
XX:XX
START
    XX:XX : Repetition expert totaling time
5.  Press the [BACK] key, return to minor item selection screen.
NWZ-S754/S755
23
4-4.  Video output (VIDEO OUT)
 
Screen display
MPTAPP (X.XX.XX)
 POWER
 AUDIO
 VIDEO
  VIDEO OUT  COLOR
 
OTHER  USER1
 CLESTE
 DAC
 DIREC
 FM
 NC
 SHUTDOWN
 EXITTEST
4-4-1.  Color bar output (COLOR)
The video signal is output on the TV monitor.
Note: The TV monitor and AV-output cable (WMC-NWV10) are neces-
sary to execute this mode.
Checking method:
1.  Connect the WALKMAN with TV monitor by using WMC-
NWV10.
2.  Enter the test mode.
3.  Press the [
v
]/[
V
] keys to select the “VIDEO OUT”, and press 
the [
B
] key to select the “COLOR”.
4.  Press the [
u
] key, the video signal is outputted to the TV 
monitor.
 
Screen display
VIDEO OUT
[100%-75% Color Bar]
TV Mode [NTSC 0]
5.  In this state, each time the [OPTION] key is pressed, the video 
signal changes in the following order.
 
Color bar (white: 100%/except white: 75%) (default) 
→ Col-
or bar (white: 75%/except white: 75%) 
→ Color bar (white: 
100%/except white: 100%) 
→ White: 100% → White: 75% → 
Changeable color bar 
→ White lattice output
 
Changeable color bar :
 
The color bar where the color is revokable is output to the TV 
monitor.
 [
u
] key 
Color is switched.
 [
b
]/[
B
] keys  R/G/B is switched. 
 [
v
]/[
V
] keys 
R/G/B level are changed.
 
 
White lattice output :
 
The white lattice is output to the TV monitor.
 [
b
] key 
NTSC/PAL/OFF is switched. 
 [
B
] key 
NTSC 0/NTSC 7.5 changes at NTSC. 
6.  Press the [BACK] key, return to minor item selection screen.
4-4-2.  User specifi cation contents output (USER1)
Note: Not used for the servicing.
4-5.  Other (OTHER)
 
Screen display
MPTAPP (X.XX.XX)
 POWER
 AUDIO
 VIDEO
  VIDEO OUT
 
OTHER CLOCK
  CLESTE KEY
 
DAC KEYNUM
 
DIREC FORMAT
 
FM DEST
 
NC SPSET
 SHUTDOWN  FWVER
  EXITTEST NCAPCHK
4-5-1.  Clock check (CLOCK)
The movement of an internal clock is confi rmed.
Checking method:
1.  Enter the test mode.
2.  Press the [
v
]/[
V
] keys to select the “OTHER”, and press the 
[
B
] key to enter the minor item.
3.  Press the [
v
]/[
V
] keys to select the “CLOCK”.
4.  Press the [
u
] key, date and time are displayed.
 
“START” changes into “OK” if the movement of an internal 
clock is confi rmed. 
 
Screen display
OTHER CLOCK
XX, XX XX XXXX
##:##:##.######
START
    XX, XX XX XXXX  : Date
    ##:##:##.###### 
: Time
5.  Press the [BACK] key, return to minor item selection screen.
NWZ-S754/S755
24
4-5-2.  Key check (KEY)
The operation of the key is confi rmed.
Checking method:
1.  Enter the test mode.
2.  Press the [
v
]/[
V
] keys to select the “OTHER”, and press the 
[
B
] key to enter the minor item.
3.  Press the [
v
]/[
V
] keys to select the “KEY”.
4.  Press the [
u
] key, all keys are displayed.
 
Screen display
OTHER KEY
                       UP             VOL+
REW        PLAY    FF    VOL–
                    DOWN     OPTION
HOLD                               BACK
START
5.  The character corresponding to the key is selected every time 
the key is pressed. “OK” is displayed if all keys are pressed.  
6.  Slide the [HOLD] key from ON to OFF, return to minor item 
selection screen.
4-5-3.  Frequency check that presses key (KEYNUM)
Note: Not used for the servicing.
4-5-4.  Format (FORMAT)
Note: Not used for the servicing.
 
Format the set from “Settings” 
→ “Common settings” → “Reset/
Format” 
→ “Format” when it home menu in usually operates when 
the set should format it. 
4-5-5.  Destination setting (DEST)
Note: Not used for the servicing.
4-5-6.  Sound pressure regulation setting (SPSET)
ON/OFF of sound pressure regulation is confi rmed.
Note: Not used for the servicing.
4-5-7.  Firmware version check (FWVER)
The fi rmware version is displayed.
Checking method:
1.  Enter the test mode.
2.  Press the [
v
]/[
V
] keys to select the “OTHER” and press the 
[
B
] key to enter the minor item.
3.  Press the [
v
]/[
V
] keys to select the “FWVER”.
4.  Press the [
u
] key, the fi rmware version is displayed.
 
Screen display
OTHER FWVER
X.XX.XX
MODEL NAME
NWZ-####
SERIAL NO
@@@@@@@
   X.XX.XX 
: Firmware version
   #### 
: Model name
   @@@@@@@ 
: Serial No.
5.  Press the [BACK] key, return to minor item selection screen.
4-5-8.  NAND capacity check (NCAPCHK)
Capacity of NAND fl ash memory, present bad block, maximum 
bad block, and vender ID are displayed. 
Checking method:
1.  Enter the test mode.
2.  Press the [
v
]/[
V
] keys to select the “OTHER”, and press the 
[
B
] key to enter the minor item.
3.  Press the [
v
]/[
V
] keys to select the “NCAPCHK”.
4.  Press the [
u
] key, capacity of NAND fl ash memory, present 
bad block, maximum bad block, and vender ID are displayed.
 
Screen display
OTHER NCAPCHK
XX GB
BADBLOCK
CUR (####)/MAX (@@@@)
VENDOR (XXXXXXXX)
$$$$
    XX 
: Capacity of NAND fl ash memory
    @@@@  : Number of present bad block
     
  (It makes an error the acquisition of the number of 
bad blocks at “–1”)
    #### 
:  Number of maximum bud block
     
  (It makes an error the acquisition of the vender ID 
at “–1”)
    $$$$ 
: Vender of NAND fl ash memory
5.  Press the [BACK] key, return to minor item selection screen.
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