Sony NWZ-E443 / NWZ-E443K / NWZ-E444 / NWZ-E444K / NWZ-E445 Service Manual ▷ View online
NWZ-E443/E443K/E444/E444K/E445
17
2-8. TOP COVER
Note: This illustration sees the LCD block from MAIN board side.
2-9. VOL SW ASSY (VSW1)
Note: This illustration sees the chassis block from MAIN board side.
3 top cover
1 two screws
(1.4
u2.5)
2
chassis block
MAIN board
2
3 VOL SW assy
(VSW1)
1 Remove two solders.
MAIN board
NWZ-E443/E443K/E444/E444K/E445
18
2-10. MAIN BOARD, LCD ASSY (LCD1)
Note 1: This illustration sees the chassis block from MAIN board side.
8 LCD holder
9 LCD connector
0 MAIN board
4 guard connector
qa LCD cushion
qs LCD assy
(LCD1)
6
1 Remove two solders of
VOL SW assy.
7 MAIN board block
2 cushion
3 two screws
(M1.7
u3.0)
5 screw
(M1.4
u2.0)
MAIN board
VOL SW assy
Note 2: This illustration sees the MAIN board block from LCD side.
Note 3: When the MAIN board is replaced, refer to “NOTE THE
MAIN BOARD REPLACING” (page 4) in servicing notes.
NWZ-E443/E443K/E444/E444K/E445
19
SECTION 3
TEST MODE
Note: 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.
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 1.5 seconds or more, the home menu
1. Turn the power on.
2. Press the [BACK] key for 1.5 seconds or more, the home menu
is displayed.
3. Slide the [HOLD] key to set the hold on.
4. While pressing the [OPTION] key, press the key as following
4. While pressing the [OPTION] key, press the key as following
order.
[BACK]
→ [
v
]
→ [
B
]
→ [
V
]
→ [
b
]
→ [
v
]
→ [
v
]
→ [
B
]
→
[
V
]
→ [
b
]
→ [
u
]
5. Enter the 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
] key to select the “EXIT”, 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:
[ ]/[ ]
key
[BACK]
key
Minor item
Finish
or
Result
Start
Automatic
u
[ ]
key
[ ]
key
B
b
v V
Minor item switching:
[ ]/[ ]
key
v
V
4. OPERATION OF THE TEST MODE
4-1. Power
4-1. Power
liquid crystal display
MPTAPP MENU
POWER
VCHK
AUDIO
ACHK
VIDEO
DSVCHK
OTHER
CHGCHK
DEVICE
BATTCHK
REC
FM
SHUTDN
EXIT
FM
SHUTDN
EXIT
4-1-1. Power supply voltage check
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
] key to select the “POWER”, and press the
[
B
] key to enter the minor item.
3. Press the [
v
]/[
V
] key to select the “VCHK”.
4. Press the [
u
] key, all power supply lines are started.
liquid crystal display
VCHK
VDDIO : X.XXXV
VDDA : X.XXXV
VDDD : X.XXXV
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
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 output.
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 output.
Checking method:
1. Enter the test mode.
2. Press the [
1. Enter the test mode.
2. Press the [
v
]/[
V
] key to select the “POWER”, and press the
[
B
] key to enter the minor item.
3. Press the [
v
]/[
V
] key to select the “ACHK”.
4. Press the [
u
] key, “1 kHz 0 dBs L-ch/R-ch VOLUME: 15”
audio signal is output.
liquid crystal display
ACHK
1kHz 0dBs L/Rch
HPOUT [ VOL 15 ]
BL ON
5. In this state, each time the [OPTION] key is pressed, LCD
back light on /off switch is performed.
6. Press the [BACK] key, return to minor item selection screen.
NWZ-E443/E443K/E444/E444K/E445
20
4-1-3. Standby current check
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
] key to select the “POWER”, and press the
[
B
] key to enter the minor item.
3. Press the [
v
]/[
V
] key 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, and
return to minor item selection screen.
4-1-4. Charge current check
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
] key to select the “POWER”, and press the
[
B
] key to enter the minor item.
3. Press the [
v
]/[
V
] key to select the “CHGCHK”.
4. Press the [
u
] key, the change setting is displayed.
liquid crystal display
CHGCHK
AC
AC
5. In this state, each time the [OPTION] 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
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
] key to select the “POWER”, and press the
[
B
] key to enter the minor item.
3. Press the [
v
]/[
V
] 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.
liquid crystal display
BATTCHK
Battery Voltage
X.XXXV
START
X.XXXV: Battery voltage
5. Press the [BACK] key, return to minor item selection screen.
4-2. Audio
While playing the audio track, it’s in a repeat state. If [BACK] key
is pressed, it’s stopped.
Press the [VOL +] key to switch the HP/LINE/SP.
While playing the audio track, it’s in a repeat state. If [BACK] key
is pressed, it’s stopped.
Press the [VOL +] key to switch the HP/LINE/SP.
liquid crystal display
MPTAPP MENU
POWER
OUTPUT
AUDIO
SN
VIDEO
F1
OTHER
F2
DEVICE
SEPLR
REC
SEPRL
FM
MAXOUT
SHUTDN
NMLZR
EXIT
SPCHK
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