Sony NWZ-E473 / NWZ-E473K / NWZ-E474 / NWZ-E474K / NWZ-E475 Service Manual ▷ View online
NWZ-E473/E473K/E474/E474K/E475
17
2-14. MOTHER BOARD
2 sheet (PWB)
5 MOTHER board
4
screw
(M1.4)
4
screw
(M1.4)
1 Remove the LCD assy flexible board in the
direction of arrow
A.
Note 1: There is a possibility of damaging LCD assy flexible board when
removing excluding the direction of arrow
A.
Note 2: Please match the position of two ditches and two
ribs when you install LCD assy flexible board.
If putting into the connector shift ditch and rib,
connector will be broken.
A
OK
NG
NG
two ribs
two ditches
– Rear bottom side view –
3 Remove two solders of battery wire.
Note 3: When the battery assy (BAT1) is removed,
refer to “ABOUT THE HANDLING OF
THE BATTERY ASSY (BAT1)” (page 3).
sheet (PWB)
guide line
MOTHER board
3astiQJ SositioQ oI sKeet 3:%
battery wire
MOTHER board
red
gap
black
%atter\ wire settiQJ
OK
NG
NWZ-E473/E473K/E474/E474K/E475
18
SECTION 3
TEST MODE
1. SETTING THE TEST MODE
Note: Perform the test mode in the state of 3.6 V or more in the battery
voltage.
Setting method:
1. Turn the power on.
2. Press the [BACK] key for more 1.5 seconds, the home menu is
1. Turn the power on.
2. Press the [BACK] key for more 1.5 seconds, the home menu is
displayed.
3. Slide the [HOLD] key from OFF to ON.
4. Press the key as following order.
4. Press the key as following order.
[
v
]
[
V
]
[BACK] [OPTION] [VOL –] [VOL +]
[
B
]
[
b
]
[
u
]
[
u
]
5. The set reboots and the color bar is displayed on the liquid
crystal display.
6. Enter the test mode when any keys are pressed in the state of
step 5, and slide the [HOLD] key from ON to OFF.
Note: The destination setting and sound pressure regulation setting cannot
be executed by this test mode.
2. RELEASING THE TEST MODE
1. Display the major item selection screen.
2. Press the [
1. Display the major item selection screen.
2. Press the [
v
]/[
V
] keys to select the “EXITTEST”, and press
the [
B
] key to select the “SURE ?”.
3. Press the [
u
] key, turn the power off and release the test
mode.
3. CONFIGURATION OF THE TEST MODE
[ ]
key
Major item
Major item switching:
[ ]/ [ ]
keys
[BACK]
key
Minor item
Finish
or
Result
Start
Automatic
u
[ ]
key
v
V
v
V
Minor item switching:
[ ]/ [ ]
keys
B
[ ]
key
b
4. OPERATION OF THE TEST MODE
4-1. Power (POWER)
4-1. Power (POWER)
MATAPP (X.XX.XX)
Screen display
POWER
AUDIO
VIDEO
OTHER
CLESTE
DAC
DIREC
FM
SHUTDOWN
EXITTEST
VCHK
ACHK
DSVCHK
CHGCHK
BATTCHK
RMVBATT
ACHK
DSVCHK
CHGCHK
BATTCHK
RMVBATT
4-1-1. Power supply voltage check (VCHK)
This mode is used in case power supply voltage in the state where
all power supply lines are starting is checked.
This mode is used in case power supply voltage in the state where
all power supply lines are starting is checked.
Checking method:
1. Enter the test mode.
2. Press the [
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 “VCHK”.
4. Press the [
u
] key, all power supply lines are started.
POWER VCHK
START
Screen display
In this state, the power supply voltage of each power supply
line can be confi rmed by measuring the voltage.
line can be confi rmed by measuring the voltage.
5. Press the [BACK] key, return to minor item selection screen.
4-1-2. Consumption current (audio playback) check
(ACHK)
This mode is used in case consumption current (audio playback)
is checked in the state where “1 kHz 0 dBs L-ch/R-ch VOLUME:
15” audio signal is outputted.
is checked in the state where “1 kHz 0 dBs L-ch/R-ch VOLUME:
15” audio signal is outputted.
Checking method:
1. Enter the test mode.
2. Press the [
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 “ACHK”.
4. Press the [
u
] key, “1 kHz 0 dBs L-ch/R-ch VOLUME: 15”
audio signal is outputted.
POWER ACHK
1kHz 0dBs L/Rch
HPOUT [ VOL: 15 ]
START
Screen display
5. In this state, each time the [
B
] key is pressed, LCD back light
on/off switch is performed.
6. Press the [BACK] key, return to minor item selection screen.
Note 1: Information on the test mode must correspond in enough
security. When the leakage has been revealed by any
chance, the source of information is specifi ed.
chance, the source of information is specifi ed.
Note 2: Execute “EXITTEST” when you release the test mode.
NWZ-E473/E473K/E474/E474K/E475
19
4-1-3. Standby current check (DSVCHK)
This mode is used in case standby current is checked.
This mode is used in case standby current is checked.
Checking method:
1. Enter the test mode.
2. Press the [
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.
POWER DSVCHK
OK
Screen display
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.
This mode is used in case charge current is checked.
Checking method:
1. Enter the test mode.
2. Press the [
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.
POWER CHGCHK
AC
AC
Screen display
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.
This mode is used in case battery voltage is checked.
Checking method:
1. Enter the test mode.
2. Press the [
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.
displayed.
(Displayed value in the following fi gure is example)
POWER BATTCHK
4.189V
Screen display
Battery voltage
5. Press the [BACK] key, return to minor item selection screen.
4-1-6. Battery separation (RMVBATT)
When the battery is removed, this mode is used.
When the battery is removed, this mode is used.
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 [
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.
MATAPP (X.XX.XX)
Screen display
POWER
AUDIO
VIDEO
OTHER
CLESTE
DAC
DIREC
FM
SHUTDOWN
EXITTEST
OUTPUT
SN
F1
F2
SEPLR
SEPRL
MAXOUT
NMLZR
SPCHK
SPKCHK
USER1
USER2
USER3
SN
F1
F2
SEPLR
SEPRL
MAXOUT
NMLZR
SPCHK
SPKCHK
USER1
USER2
USER3
NWZ-E473/E473K/E474/E474K/E475
20
4-2-1. Output check (OUTPUT)
“1 kHz 0 dBs L-ch/R-ch VOLUME: 25” audio signal is outputted.
“1 kHz 0 dBs L-ch/R-ch VOLUME: 25” audio signal is outputted.
Checking method:
1. Enter the test mode.
2. Press the [
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 “OUTPUT”.
4. Press the [
u
] key, “1 kHz 0 dBs L-ch/R-ch VOLUME: 25”
audio signal is outputted.
AUDIO OUTPUT
1kHz 0dBs L/Rch
HPOUT [ VOL: 25 ]
START
Screen display
5. Press the [BACK] key, return to minor item selection screen.
4-2-2. S/N check (SN)
“Infi nity Zero VOLUME: 25” audio signal is outputted.
“Infi nity Zero VOLUME: 25” audio signal is outputted.
Checking method:
1. Enter the test mode.
2. Press the [
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 “SN”.
4. Press the [
u
] key, “Infi nity Zero VOLUME: 25” audio signal
is outputted.
AUDIO SN
Infinity Zero
HPOUT [ VOL: 25 ]
START
Screen display
5. Press the [BACK] key, return to minor item selection screen.
4-2-3. Frequency characteristic 1 check (F1)
“20 Hz 0 dBs L-ch/R-ch VOLUME: 25” audio signal is outputted.
“20 Hz 0 dBs L-ch/R-ch VOLUME: 25” audio signal is outputted.
Checking method:
1. Enter the test mode.
2. Press the [
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 “F1”.
4. Press the [
u
] key, “20 Hz 0 dBs L-ch/R-ch VOLUME: 25”
audio signal is outputted.
AUDIO F1
20Hz 0dBs L/Rch
HPOUT [ VOL: 25 ]
START
Screen display
5. Press the [BACK] key, return to minor item selection screen.
4-2-4. Frequency characteristic 2 check (F2)
“20 kHz 0 dBs L-ch/R-ch VOLUME: 25” audio signal is output-
ted.
“20 kHz 0 dBs L-ch/R-ch VOLUME: 25” audio signal is output-
ted.
Checking method:
1. Enter the test mode.
2. Press the [
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 “F2”.
4. Press
the
[
u
] key, “20 kHz 0 dBs L-ch/R-ch VOLUME: 25”
audio signal is outputted.
AUDIO F2
20kHz 0dBs L/Rch
HPOUT [ VOL: 25 ]
START
Screen display
5. Press the [BACK] key, return to minor item selection screen.
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