NWZ-S754, NWZ-S755 - Sony Audio Service Manual (repair manual). Page 18

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NWZ-S754/S755
18
4-1-3.  Standby current check (DSVCHK)
This mode is used in case standby current is checked.
Checking method:
1.  Enter the test mode.
2.  Press the [
v
]/[
V
] keys to select the “POWER”, and press the 
[
B
] key to enter the minor item.
3.  Press the [
v
]/[
V
] keys to select the “DSVCHK”.
4.  Press the [
u
] key, enter the state of the deep sleep.
5.  Press the [BACK] key, release the state of the deep sleep.
 
Screen display
POWER DSVCHK
OK
6.  Press the [BACK] key, return to minor item selection screen.
4-1-4.  Charge current check (CHGCHK)
This mode is used in case charge current is checked.
Checking method:
1.  Enter the test mode.
2.  Press the [
v
]/[
V
] keys to select the “POWER”, and press the 
[
B
] key to enter the minor item.
3.  Press the [
v
]/[
V
] keys to select the “CHGCHK”.
4.  Press the [
u
] key, the charge setting is displayed.
 
Screen display
POWER CHGCHK
AC
AC
5.  In this state, each time the [
B
] key is pressed, the port setting 
for the charge is changed as shown in the table below.
Port control
Display
CHG_XCHGEN
CHG_PEN1
CHG_PEN2
AC
L
H
H
USB500
L
H
H
USB100
L
H
L
6.  Press the [BACK] key, return to minor item selection screen.
4-1-5.  Battery voltage detection check (BATTCHK)
This mode is used in case battery voltage is checked.
Checking method:
1.  Enter the test mode.
2.  Press the [
v
]/[
V
] keys to select the “POWER”, and press the 
[
B
] key to enter the minor item.
3.  Press the [
v
]/[
V
] keys key to select the “BATTCHK”.
4.  Press the [
u
] key, the battery voltage is displayed.
 
When the battery voltage cannot be confi rmed, “ERROR” is 
displayed.
 
Screen display
POWER BATTCHK
X.XXXV
 
X.XXXV: Battery voltage
5.  Press the [BACK] key, return to minor item selection screen.
4-1-6.  Battery separation (RMVBATT)
Note: Not used for the servicing.
4-2.  Audio (AUDIO)
While playing the audio track, it’s in a repeat state. If [BACK] key 
is pressed, it’s stopped.
Press the [
b
] key to switch the HPOUT/LINEOUT/SPEAKER.
 
Screen display
MPTAPP (X.XX.XX)
 POWER
 
AUDIO OUTPUT
 
VIDEO SN
  VIDEO OUT 
F1
 
OTHER F2
  CLESTE SEPLR
 
DAC SEPRL
 
DIREC MAXOUT
 
FM NMLZR
 
NC SPCHK
 SHUTDOWN  SPKCHK
  EXITTEST USER1
 
 USER2
 
 USER3
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