NWZ-A826, NWZ-A826K, NWZ-A828, NWZ-A828K, NWZ-A829, NWZ-A829K - Sony Audio Service Manual (repair manual). Page 13

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13
NWZ-A826/A826K/A828/A828K/A829/A829K
4-2-9.  Sound pressure regulation level check
“1 kHz 0 dBs L-ch/R-ch VOLUME: 30” audio signal is output-
ted.
Checking method:
1.  Enter the test mode.
2. Press 
the 
[
v
]/[
V
] key to select the “AUDIO”, and press the [
B
key to enter the minor item.
3.  Press the [
v
]/[
V
] key to select the “SPCHK”.
4.  Press the [
u
] key, “1 kHz 0 dBs L-ch/R-ch VOLUME: 30”  
audio signal is outputted.
   
liquid crystal display
AUDIO SPCHK
1kHz 0dBs L/Rch
HPOUT [ VOL: 30 ]
START
5.  Press the [BACK] key, return to minor item selection screen.
4-3. Video
   
liquid crystal display
MPTAPP MENU
 POWER
 AUDIO
 
VIDEO — LCD
 OTHER
 CLESTE
 DAC
 BLUETOOTH
 SHUTDOWN
 EXITTEST
4-3-1.  LCD display check
Liquid crystal display is checked.
Checking method:
1.  Enter the test mode.
2. Press 
the 
[
v
]/[
V
] key to select the “VIDEO”, and press the [
B
key to select the “LCD”.
3. Press 
the 
[
u
] key, all black is displayed on the liquid crystal 
display.
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 (bright-
ness minimum) 
→ Color bar (brightness maxmum) → All red 
→ All green → All blue → All white → Maximum drawing 
size confi rmation 
→ diagonal gradation (red) → diagonal gra-
dation (green) 
→ diagonal gradation (blue) → diagonal grada-
tion (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, LCD back 
light brightness min/max/middle switch is performed.
6.  Press the [BACK] key, return to minor item selection screen.
4-4. Other
   
liquid crystal display
MPTAPP MENU
 POWER
 AUDIO
 VIDEO
 OTHER 
CLOCK
 CLESTE 
KEY
 DAC 
KETYNUM
 BLUETOOTH 
FORMAT
 SHUTDOWN  DEST
 EXITTEST SPSET
  
FWVER
  
NCAPCHK
4-4-1. Clock check
The movement of an internal clock is confi rmed.
Checking method:
1.  Enter the test mode.
2. Press 
the 
[
v
]/[
V
] key to select the “OTHER”, and press the [
B
key to enter the minor item.
3.  Press the [
v
]/[
V
] key to select the “CLOCK”.
4.  Press the [
u
] key, date and time are displayed.
   
liquid crystal display
OTHER CLOCK
XX, XX XX XXXX
##:##:##.######
START
    XX, XX XX XXXX  : Date
   ##:##:##.###### 
: Time
    “START” changes into “OK” if the movement of an internal 
clock is confi rmed. 
5.  Press the [BACK] key, return to minor item selection screen.
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