Sony NWD-E023F / NWD-E025F Service Manual ▷ View online
NWD-E023F/E025F
9
3-7. BATTERY ASSY (BT901), MAIN BOARD
Note: This illustration sees the MAIN board from the back.
LCD flexible board
(CN402)
connector
(CN602)
battery assy
(BT901)
R Remove the two solders.
RB CU sheet
RG MAIN board
RT protection sheet
RE sheet
(set
chassis
A)
sheet key flexible board
(CN501)
electrostatic sheet (A)
Pull out the HP plate and
strap
ornament.
Pull out the strap cover.
NWD-E023F/E025F
10
SECTION 4
TEST MODE
1. HOW TO ENTER THE TEST MODE
Procedure:
1. While holding the [
Procedure:
1. While holding the [
u
] button, press the following buttons
one after another in the order shown below.
[VOL
+]
→ [VOL +] → [VOL –] → [VOL –] → [VOL +] →
[VOL –]
→ [VOL +] → [VOL –] → [
HOME]
→
[
HOME]
2. After the screen turns off once and turns back on, remove your
hand from the [
u
] button.
3. Wait until the message “PUSH ANY KEY GOTO MENU...” is
displayed on the screen.
4. When any button is pressed, the main menu appears.
“*** MAIN MENU ***”
“1.
KEY
CHECK”
2. HOW TO CHANGE THE TEST MODE
Procedure:
1. Enter the TEST mode so that the MAIN MENU is displayed
Procedure:
1. Enter the TEST mode so that the MAIN MENU is displayed
on the screen.
2. Select the desired test item by using the [
>
] button and the
[
.
] button.
3. Click the [
u
] button to display the SUB MENU of the se-
lected test item.
4. Press and hold the [
u
] button until “RETURN” is displayed
on the screen to return the screen from the SUB MENU to the
MAIN MENU.
MAIN MENU.
3. SYSTEM PARAMETER INITIALIZE
Procedure:
1. While the MAIN MENU is displayed in the TEST mode, select
Procedure:
1. While the MAIN MENU is displayed in the TEST mode, select
“4. SYSTEM” by using the [
>
] button and the [
.
] but-
ton.
2. Click the [
u
] button to display “1. SYSTEM PARAM INIT”
of the SYSTEM menu.
3. Click the [
u
] button to display the following message:
“PUSH ‘PLAY’ START”
4. Click the [
u
] button. Then, the system parameters are all ini-
tialized. Upon completion of the parameter initialization, the
screen displays the following message and returns to the SYS-
TEM menu.
screen displays the following message and returns to the SYS-
TEM menu.
“Parameter
Initialized.”
4. ALL KEY CHECK MODE
Procedure:
1. Set the [HOLD
Procedure:
1. Set the [HOLD
B
] switch to the HOLD ON position.
2. While the MAIN MENU is displayed in the TEST mode, select
“1. KEY CHECK” by using the [
>
] button and the [
.
]
button.
3. Click the [
u
] button to display “1. DEVICE CHECK” of the
KEY CHECK menu.
4. Click the [
u
] button to display the following message:
“PUSH ‘ANY KEY’ START”
5. Press the [
u
] button to display the following message:
“0x0001 (ALL = 0x01f7)
6. Press the [
HOME] button to add the hexadecimal
number 2h and display the following indication:
“0x0003 (ALL = 0x01f7)
7. Set the [HOLD
B
] switch in the HOLD OFF position to add
the hexadecimal number 4h and display the following indica-
tion:
tion:
“0x0007 (ALL = 0x01f7)
8. Press the [VOL –] button to add the hexadecimal number 10h
and display the following indication:
“0x0017 (ALL = 0x01f7)
9. Press the [VOL +] button to add the hexadecimal number 20h
and display the following indication:
“0x0037 (ALL = 0x01f7)
10. Press the [
>
] button to add the hexadecimal number 40h and
display the following indication:
“0x0077 (ALL = 0x01f7)
11. Press the [
.
] button to add the hexadecimal number 80h and
display the following indication:
“0x00f7 (ALL = 0x01f7)
12. Press the [ PLAY MODE
SOUND] button to return the
screen to the SUB MENU “1. DEVICE CHECK” after dis-
playing “KEY CHECK OK”.
playing “KEY CHECK OK”.
13. While the screen is in any step of step 5 to 11 of the All Key
Check Mode, press and hold the [
u
] button until “RETURN”
is displayed on the screen to cancel the All Key Check Mode
and return to the KEY CHECK menu.
and return to the KEY CHECK menu.
5. CHARGE CURRENT SELECT
Procedure:
1. While the MAIN MENU is displayed in the TEST mode, select
Procedure:
1. While the MAIN MENU is displayed in the TEST mode, select
“2. CHARGE” by using the [
>
] button and the [
.
] but-
ton.
2. Click the [
u
] button to display “1. CHARGE START/STOP”
of the CHARGE menu.
3. Select “2. SET CHARGE POWER” by the [
>
] button.
4. Whenever the [
u
] button is clicked, the charge current tog-
gles between the two values as shown.
“CHG 100mA” and “CHG 500mA”
5. Press and hold the [
u
] button until “RETURN” is displayed
on the screen and return to the CHARGE menu.
6. CHARGE ON/OFF SELECT
Procedure:
1. Connect the equipment to the USB port of a PC.
2. While the MAIN MENU is displayed in the TEST mode, select
Procedure:
1. Connect the equipment to the USB port of a PC.
2. While the MAIN MENU is displayed in the TEST mode, select
“2. CHARGE” by using the [
>
] button and the [
.
] but-
ton.
3. Click the [
u
] button to display “1. CHARGE START/STOP”
of the CHARGE menu.
4. Click the [
u
] button to display the following message:
“CHG:
XXXmA”
“CHG STOP” (or “CHG START”)
5. Whenever the [
u
] button is clicked, the charge current is
turned ON and OFF, and the screen toggles between the fol-
lowing two messages.
lowing two messages.
“CHG:
XXXmA”
“CHG
START
→ Started.”
And
“CHG:
“CHG:
XXXmA”
“CHG
STOP
→ Stopped.”
6. Press and hold the [
u
] button until “RETURN” is displayed
to return to the CHARGE menu.
7. BEEP ON/OFF
Procedure:
1. While the MAIN MENU is displayed in the TEST mode, select
Procedure:
1. While the MAIN MENU is displayed in the TEST mode, select
“5. BEEP” by using the [
>
] button and the [
.
] button.
2. Click the [
u
] button to display “1. BEEP ON/OFF” of the
BEEP menu.
3. Whenever the [
u
] button, the screen toggles between the fol-
lowing two messages:
“BEEP: ON” and “BEEP: OFF”
4. Confi rm that the beep sounds from the headphones when
“BEEP OFF” is switched to “BEEP ON”.
5. Press and hold the [
u
] button until “RETURN” is displayed
on the screen to return to the BEEP menu.
NWD-E023F/E025F
11
8. DISPLAY CHECK
Procedure:
1. While the MAIN MENU is displayed in the TEST mode, select
Procedure:
1. While the MAIN MENU is displayed in the TEST mode, select
“6. DISPLAY” by using the [
>
] button and the [
.
] but-
ton.
2. Click the [
u
] button to display “1. ALL SCREEN DISPLAY”
of the DISPLAY menu.
3. Click the [
u
] button to display the following message.
“PUSH ‘PLAY’ START”
4. Whenever the [
u
] button is clicked, the screen changes in the
following order.
Entire screen becomes all red.
Entire screen becomes all green.
Entire screen becomes all blue.
Entire screen becomes all black.
Entire screen becomes all white.
Color bars are displayed on the screen.
Dot pattern is displayed on the entire screen.
5. Press and hold the [
u
] button until “RETURN” is displayed
on the screen to return to the DISPLAY menu.
9. TUNER ON/OFF
Procedure:
1. While the MAIN MENU is displayed in the TEST mode, select
Procedure:
1. While the MAIN MENU is displayed in the TEST mode, select
“3. TUNER” by using the [
>
] button and the [
.
] button.
2. Click the [
u
] button to display “1. TUNER ON/OFF” of the
TUNER menu.
3. Whenever the [
u
] button is clicked, the tuner toggles be-
tween ON and OFF, and the screen toggles between the fol-
lowing two messages:
lowing two messages:
“Tuner: ON” and “Tuner: OFF”
4. Confi rm that the FM broadcast is received by using the head-
phones during “TUNER ON”.
5. Press and hold the [
u
] button until “RETURN” is displayed
on the screen to return to the TUNER menu.
10. FM RECEPTION FREQUENCY CHECK
Procedure:
1. While the MAIN MENU is displayed in the TEST mode, select
Procedure:
1. While the MAIN MENU is displayed in the TEST mode, select
“3. TUNER” by using the [
>
] button and the [
.
] but-
ton.
2. Click the [
u
] button to display “1. TUNER ON/OFF” of the
TUNER menu.
3. Select “2. TUNER FREQ SET” by the [
>
] button.
4. Whenever the [
u
] button is clicked, the screen changes in the
following order.
“Freq
→ MIN (87.50 MHz)”
“Freq
→ CENTER (97.50 MHz)”
“Freq
→ MAX (108.00 MHz)”
5. Press and hold the [
u
] button until “RETURN” is displayed
on the screen to return to the TUNER menu.
11. SLEEP CHECK
Procedure:
1. While the MAIN MENU is displayed in the TEST mode, select
Procedure:
1. While the MAIN MENU is displayed in the TEST mode, select
“4. SYSTEM” by using the [
>
] button and the [
.
] but-
ton.
2. Click the [
u
] button to display “1. SYSTEM PARAM INIT”
of the SYSTEM menu.
3. Select “2. SYSTEM SLEEP/WAKE” by the [
>
] button.
4. Click the [
u
] button to display the following message:
“PUSH
‘PLAY’
START”
5. Press and hold the [
u
] button until “SLEEP IN” is displayed
to enter the SLEEP mode.
6. When the [
u
] button is released, the screen exits the SLEEP
mode to display the SYSTEM menu after showing “SLEEP
OUT”.
OUT”.
12. INFORMATION CHECK
Procedure:
1. While the MAIN MENU is displayed in the TEST mode, select
Procedure:
1. While the MAIN MENU is displayed in the TEST mode, select
“7. INFO” by using the [
>
] button and the [
.
] button.
2. Click the [
u
] button to display “1. SYSTEM INFORMA-
TION” of the INFO menu.
3. Whenever the [
u
] button is clicked, the screen changes in the
following order:
“VERSION:
0.88.00.00”
“BOOTs
VERSION
5.10”
“FONT:
1.10C”
“SIMUKE:
EU”
“[HWCONF] MODEL: 0ah VER: 00h CEW: FALSE”
“Storage:
2GB”
“TUNER
MODEL:
YES”
“SVN
VERSION:
810S,
810S”
4. Press and hold the [
u
] button until “RETURN” is displayed
on the screen to return to the INFO menu.
13. HOW TO EXIT THE TEST MODE
Procedure:
1. While the MAIN MENU is displayed in the TEST mode, select
Procedure:
1. While the MAIN MENU is displayed in the TEST mode, select
“99 REBOOT” by using the [
>
] button and the [
.
] but-
ton.
2. Click the [
u
] button. Then, the screen disappears momen-
tarily, and the system reboots in the normal mode.
NWD-E023F/E025F
12
SECTION 5
DIAGRAMS
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
Ω and
1
/
4
W or less unless otherwise
specifi ed.
• C : panel designation.
• A : B+ Line.
• Power voltages is dc 3.7 V and fed with regutated dc pow-
• Power voltages is dc 3.7 V and fed with regutated dc pow-
er supply fron CN602 pin 1 and 2 on the MAIN board.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : PLAYBACK
( ) : FM
• Waveforms is taken with a oscilloscope.
Voltage variations may be noted due to normal production
( ) : FM
• Waveforms is taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
• Voltages are taken with VOM (Input impedance 10 M
Ω).
• Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J :
J :
AUDIO
F :
FM
• The voltage and waveform of CSP (chip size package)
cannot be measured, decause its lead layout is different
form that of conventional IC.
form that of conventional IC.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
•
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
C
B
These are omitted.
E
Q
• Lead layouts
surface
CSP (Chip Size Package)
Lead layout of conventional IC
Caution:
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Parts on the pattern face side seen from
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
• MAIN board is mulyi-layer printed board.
However, the patterns of intermediate-layers have not
However, the patterns of intermediate-layers have not
been included in diagrams.
• Waveforms
– MAIN Board –
X102
500 mV/DIV, 20 ns/DIV
22.1 ns
1 Vp-p
X101
1 V/DIV, 50 ns/DIV
83.3 ns
1.5 Vp-p
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