DOWNLOAD Sony NWZ-A844 / NWZ-A845 / NWZ-A846 / NWZ-A847 Service Manual ↓ Size: 756.44 KB | Pages: 24 in PDF or view online for FREE

Model
NWZ-A844 NWZ-A845 NWZ-A846 NWZ-A847
Pages
24
Size
756.44 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
nwz-a844-nwz-a845-nwz-a846-nwz-a847.pdf
Date
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Sony NWZ-A844 / NWZ-A845 / NWZ-A846 / NWZ-A847 Service Manual ▷ View online

NWZ-A844/A845/A846/A847
13
4-2-5.  CH separation (L-ch) check (SEPLR)
“1 kHz 0 dBs L-ch VOLUME: 25” 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 “SEPLR”.
4.  Press the [
u
] key, “1 kHz 0 dBs L-ch VOLUME: 25” audio 
signal is outputted.
 
Screen display
AUDIO SEPLR
1kHz 0dBs Lch
HPOUT [ VOL: 25 ]
START
5.  Press the [BACK] key, return to minor item selection screen.
4-2-6.  CH separation (R-ch) check (SEPRL)
“1 kHz 0 dBs R-ch VOLUME: 25” 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 “SEPRL”.
4. Press 
the 
[
u
] key, “1 kHz 0 dBs R-ch VOLUME: 25” audio 
signal is outputted.
 
Screen display
AUDIO SEPRL
1kHz 0dBs Rch
HPOUT [ VOL: 25 ]
START
5.  Press the [BACK] key, return to minor item selection screen.
4-2-7.  Maximum output check (MAXOUT)
“1 kHz 0 dBs L-ch/R-ch VOLUME: 30” (Headphone output when 
AVLS operates: “1 kHz 0 dBs L-ch/R-ch VOLUME: 14”) 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 “MAXOUT”.
4. Press 
the 
[
u
] key, “1 kHz 0 dBs L-ch/R-ch VOLUME: 30”  
(Headphone output when AVLS operates: “1 kHz 0 dBs L-
ch/R-ch VOLUME: 14”) audio signal is outputted.
 
Screen display
AUDIO MAXOUT
1kHz 0dBs L/Rch
HPOUT [ VOL: 30 ]
AVLS OFF
START
5.  In this state, each time the [
B
] key is pressed, AVLS on/off 
switch is performed.
6.  Press the [BACK] key, return to minor item selection screen.
4-2-8.  Normalizer check (NMLZR)
“1 kHz –24 dBs L-ch/R-ch VOLUME: 30” audio signal is output-
ted.
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 “NMLZR”.
4. Press 
the 
[
u
] key, “1 kHz –24 dBs L-ch/R-ch VOLUME: 30” 
audio signal is outputted.
 
Screen display
AUDIO NMLZR
1kHz –24dBs L/Rch
HPOUT [ VOL: 30 ]
START
5.  Press the [BACK] key, return to minor item selection screen.
NWZ-A844/A845/A846/A847
14
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
“20 
− 20kHz 0dBs L-ch/R-ch VOLUME: 30” audio signal is out-
putted.
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 “SPKCHK”.
4.  Press the [
u
] key, “20 
− 20kHz 0dBs L-ch/R-ch VOLUME: 
30” audio signal is outputted.
 
Screen display
AUDIO SPKCHK
20-20kHz 0dBs L/Rch
HPOUT [ VOL: 30 ]
START
5.  Press the [BACK] key, return to minor item selection screen.
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.
NWZ-A844/A845/A846/A847
15
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.
4-3. Video (VIDEO)
 
Screen display
MPTAPP (X.XX.XX)
 POWER
 AUDIO
 
VIDEO — LCD
  VIDEO OUT  USER1
 
OTHER  USER2
 
CLESTE  USER3
 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 [VOL –] 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.
NWZ-A844/A845/A846/A847
16
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.
4-4.  Video output (VIDEO OUT)
 
Screen display
MPTAPP (X.XX.XX)
 POWER
 AUDIO
 VIDEO
  VIDEO OUT — COLOR
 OTHER
 CLESTE
 FM
 NC
 SHUTDOWN
 EXITTEST
4-4-1.  Color bar output (COLOR)
Checking method:
1.  Enter the test mode.
2.  Press the [
v
]/[
V
] keys to select the “VIDEO OUT”, and press 
the [
B
] key to select the “COLOR”.
3.  Press the [
u
] key, the video signal is outputted.
 
Screen display
VIDEO OUT
[75%-75% Color Bar]
TV Mode [NTSC 0]
4.  In this state, each time the [OPTION] key is pressed, the video 
signal changes in the following order.
 
Color bar (white: 75%/except white: 75%) (default) 
→ Color 
bar (white: 100%/except white: 75%) 
→ Color bar (white: 
100%/except white: 100%) 
→ White: 100% → White: 75%
5.  Press the [BACK] key, return to minor item selection screen.
4-5. Other (OTHER)
 
Screen display
MPTAPP (X.XX.XX)
 POWER
 AUDIO
 VIDEO
 VIDEO 
OUT
 OTHER 
CLOCK
 CLESTE 
KEY
 FM 
KEYNUM
 NC 
FORMAT
 SHUTDOWN 
DEST
 EXITTEST SPSET
  
FWVER
  
NCAPCHK
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