NW-A100TPS/A105/A105HN/A106HN
42
Sony CONFIDENTIAL
For Authorized Servicer
5-1-2. Consumption current (audio playback) check
(Current
check)
It can be check the consumption current (audio playback) in the state
where audio signal is outputted of the “Sampling rate: 44.1 kHz/
Frequency: 1 kHz (L/R-ch)/Bit rate: 16 bit”.
Note:
It is necessary to disassemble the WALKMAN main unit and in the
state possible to check the board.
Procedure:
1. Press the [+] or [–] button to select the “Power”, and press the
[
u
] or [
>
] button to enter the minor item.
2. Press the [+] or [–] button to select the “Current check”.
3. Press the [
u
] button, consumption current check screen is dis-
played.
Screen display
The format of the
audio signal output
Item of button input settings
Power
(POW ACHK command)
[ 44100]
[16]
[1000]
[1000]
[10]
Power A check
sampling
bit
rate
freq(R)
freq(L)
play
time
output
volume
display
[SE]
[ 90]
[100]
Button input settings under this mode of operation:
[+]/[–] :
Volume up/down
[
>
] : Backlight switching (on/off)
[
.
] : Output switching
(SE (stereo mini)/BTL (not supported))
[
u
]
: Audio signal output (10 seconds)
4. In step 3 state, check the audio playback consumption current.
5. Switch the [HOLD] switch in the order of OFF
t
ON, or ON
t
OFF
t
ON, to return to minor item selection screen.
5-1-3. Standby current check (DeepSleep check)
It can be check the standby current.
Note:
It is necessary to disassemble the WALKMAN main unit and in the
state possible to check the board.
Procedure:
1. Press the [+] or [–] button to select the “Power”, and press the
[
u
] or [
>
] button to enter the minor item.
2. Press the [+] or [–] button to select the “DeepSleep check”.
3. Press the [
u
] button, enter the state of the deep sleep.
(Screen display is turned off)
4. In step 3 state, check the measuring the consumption current in
standby.
– Continued on upper right –
5. Sleep is released by pressing [
1
] button.
Screen display
Power
(POW DSVC command)
Power DeepSleep
>>> idle state
6. Switch the [HOLD] switch in the order of OFF
t
ON, or ON
t
OFF
t
ON, to return to minor item selection screen.
5-1-4. Charge current check (Charge check)
Note:
Not used for the servicing.
5-1-5. Battery voltage detection check (Battery voltage)
It can be check the battery voltage.
Procedure:
1. Press the [+] or [–] button to select the “Power”, and press the
[
u
] or [
>
] button to enter the minor item.
2. Press the [+] or [–] button to select the “Battery voltage”.
3. Press the [
u
] button, the battery voltage is displayed.
(Displayed value in the following
fi
gure is example)
Screen display
Power
(POW BATT command)
Power Battery check
digital
[4.164V]
4. Press the [
u
] button in the state of step 3, updates the battery
voltage value display.
5. Switch the [HOLD] switch in the order of OFF
t
ON, or ON
t
OFF
t
ON, to return to minor item selection screen.
5-1-6. Battery insertion and removal check
(Battery
status)
Note:
Not used for the servicing.
5-1-7. Thermistor voltage check (Thermistor check)
Note:
Not used for the servicing.
SYS SET
2020/02/27 22:57:21 (GMT+09:00)
