Sony NW-E8P Service Manual ▷ View online
8
NW-E8P
SECTION 4
TEST MODE
Setting the Test Mode
To enter the test mode, two methods are available :
1. Entering method with key input.
1. Entering method with key input.
Turn the HOLD switch to ON. While holding down the Bx key, press the following keys in the following order :
VOLUME +
VOLUME +
t VOLUME – t VOLUME – t VOLUME + t VOLUME – t MEGA BASS t MEGA BASS t DISPLAY
Note :
Push each key for less than 3 seconds.
2. Entering method by shorting the test point.
Solder brige the test point SL701 (TEST) on the main board and turn on the power.
Releasing the TEST mode
1. When test mode was entered with key input, turn off the power supply.
2. When test mode was entered by shorting the test point, turn off the power supply and open the solder brige of SL701 (TEST) on the main
2. When test mode was entered by shorting the test point, turn off the power supply and open the solder brige of SL701 (TEST) on the main
board.
Test mode
Short : Test mode
Open : Normal mode
Short : Test mode
Open : Normal mode
(
)
1
4
regulated
DC power supply
Connecting cable
supplied with the set
supplied with the set
USB Connector
(1-784-009-11 or 1-779-676-11)
Set
Battery terminal
CN701
(USB Connector)
regulated
DC power supply
LCD
Check
Ver. /
destination
display
All display
lit
(+)
(–)
All display
off
Flash memory
bad block
check
Bx
Bx
(+)
(–)
(+)
(–)
Destination
setting
Contrast
adjustment
(–)
Low voltage
check
(–)
Bx
Bx
(–)
High DC
detection
detection
check
Low DC
detection
check
(+)
Supply 0.9V DC to battery
terminal and press (–) key.
terminal and press (–) key.
Supply 1.24V DC to battery
terminal and 7V DC to USB
connector and press (+) key.
terminal and 7V DC to USB
connector and press (+) key.
Supply 1.24V DC to battery
terminal and 4V DC to USB
connector and press (+) key.
terminal and 4V DC to USB
connector and press (+) key.
Configuration of Test Mode
The test mode has the configuration given below.
Bx
: Play/stop key
(+)
: VOLUME + key
(–)
: VOLUME – key
Connection
C
C703
C704
R764
R769
R7
7
R705
R703
R767
R783
R7
7
R7
7
JC722
X701
TP702
TP3 TP701
TP703
(TEST)
IC820
CN701
USB
CONNECTOR
4
4
1
1
1
2
2
3
3
5
5
5
13
(13)
1-681-242-
P701
D781
MAIN BOARD (SIDE B)
9
9
NW-E8P
Note on Printed Wiring Board:
• X
: parts extracted from the component side.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side:
Parts on the parts face side seen from the
(Side A)
parts face are indicated.
• Main board is six-layer printed board.
However, the patterns of layers 2 to 5 have not been
included in this diagrams.
included in this diagrams.
Lead layout of
conventional IC
conventional IC
CSP (chip size package)
*
Replacement of IC710 used in the set requires a spe-
cial tool.
cial tool.
• Lead Layouts
surface
z
Waveforms
1
VOLT/DIV : 0.5 V AC
TIME/DIV : 0.2 nsec
TIME/DIV : 0.2 nsec
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
: B+ Line.
• Power voltage is dc 1.5 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground in
playback mode.
no mark : PLAY
no mark : PLAY
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
J
: DIGITAL
F
: ANALOG
• The voltage and waveform of CSP (chip size package)
cannot be measured, because its lead layout is different
form that of conventional IC.
form that of conventional IC.
*
Replacement of IC710 used in the set requires a spe-
cial tool.
cial tool.
2
VOLT/DIV : 1 V AC
TIME/DIV : 20
TIME/DIV : 20
µ
sec
VOLT/DIV : 1 V AC
TIME/DIV : 20
TIME/DIV : 20
µ
sec
3
Q902
D
IC901
5
EXT
VOLT/DIV :1 V AC
TIME/DIV : 5
TIME/DIV : 5
µ
sec
4
Q903
D
1Vp-p
22.5792MHz
2.8Vp-p
3Vp-p
2.2Vp-p
10
µ
sec
IC701
<zb/
XTO
— MAIN SECTION —
— POWER SECTION —
LCD check
Check the condition of indication by all display is lit or not.
Bx key : check start
Flash memory bad block check
OK
: FL OK The back light turns on
NG
: FL NG The back light turns on and off
AVLS key : select the destination
AR J (AEP, E).
Destination setting
Bx key : Enter the destination
OK
: WT OK The back light turns on
NG
: WT NG The back light turns on and off
Contrast adjustment
Display
t LC45
contrast value (Initial value : 45)
>, . key : Select the contrast value.
Bx key
: Enter the contrast value.
Normally, do not perform this adjustment.
Low voltage check
Low voltage detection check
OK
: LB OK The back light turns on
NG
: LB NG The back light turns on and off
Battery high voltage detection check
High DC detection check
OK
: HD OK The back light turns on
NG
: HD NG The back light turns on and off
Battery low voltage detection check
Low DC detection check
OK
: LD OK The back light turns on
NG
: LD NG The back light turns on and off
Description of each Mode ( : indication on display)
R
The regulated DC power supply voltage supplied to USB connector on checking each voltage value.
OK
NG
Low voltage check
0.9V
1.0V or more
High DC detection check
7.0V or more
6.0V or less
Low DC detection check
4.0V or less
5.0V or more
SECTION 5
DIAGRAMS
10
10
NW-E8P
5-1. BLOCK DIAGRAMS
• Signal path.
F
: ANALOG
J
: DIGITAL
X701
X801
D781
D901
Q901
D704
S703
D912
D913
D914
D915
Q907
Q905
D908
D909
S701
S702
S706
S705
T701
D703
S704
S707
22.5792MHz
12MHz
MCLK
XPD
BICK
SDATA
LRCK
DEM
D/A CONVERTER
AOIU L
AOUT R
VREF
LPF1
LPF1
LPF2
IN B
IN A
BEEP OUTB
BEEP OUTA
OUTA
OUTB
AGC IN
PW SW
MT SW
BEEP IN
MT SW
BEEP IN
VREF IN
HEADPHONE
AMP
BST NF2
V REF
Q301
LIQUID CRYSTAL
DISPLAY
ON
OFF
DRY BATTERY
SIZE "AAA"
(IEC DESIGNATION LR03)
1PC 1.5V
CONVERTER
DC-DC
LCD
SWITCH
Q701,702
FS256
PCMO
BCK
LRCK
BEEP
PWM2
XTO
XTI
VDDA
LCD
SWITCH
Q701
GIOB3
TSB
WAKE0
WAKE1
ACTRO
WAKE3
WAKE
XCRST
GIOD0
XUSB DET
FRE4
FRWP
FRWE
FRALE
FRCLE
FRE1
FRE0
FRRE
FRREADY
FRIO0
FRIO7
FRIO8
FRIO15
INVERTER
INVERTER
Q832
Q831
USB DET
Q833
FLASH RAM
R/XB
XRE
CLE
ALE
ALE
XWE
XWP
XEX-RST
D11
XOUT
XIN
A1
A6
D0
DACK
DREQ
XRST
XCS
XWR
XRD
XINT
D15
D12
XTRST
TRON
VBUS
D+
D-
USB DEVICE
CONTROLLER
VOUT
VIN
POWER SWITCH
USB
CE
I/O0
I/O7
I/O8
I/O15
1D
1Q
6Q
6D
-
-
-
-
-
25
32
41
48
3
4
7
8
13
14
2
5
6
9
12
15
17
22
40
37
34
23
-
-
163
170
173
180
-
-
-
-
-
-
-
-
(3/4)
(4/4)
(1/4)
BUS DRIVER
CLK
8
9
10
11
12
13
13
1
2
3
USB B+
FRIO 0-15
FRIO 1-6
FRIO 0-15
VDD CORE
CONTROL
SYSTEM
CN701
USB
CONNECTOR
USB D+
USB D-
VBUS
FRRST
USB INT
USB DREQ
USB DREQ
USB XDACK
USB XRST
DCINMONI
EXBMONI
DCINDET
KEY2
KEY1
ELON
XHOLD
AMUTE
HPPWR
DEMP
XPDDAC
Q903,
IC902
BATT
CONVERTER
DC-DC
VDD102
(+2.8v)
(+2.8v)
A VCC
VDD CORD
(+2.0V)
CONVERTER
DC-DC
MD6
MD5
MD4
MD3
MD2
MD1
MD0
BATT
VDD101
(+2.8v)
VDD101
CCLK
GIOB7
OSCEN
WAKEEN
TEST1
VDDCORE
(+2.8v)
VDD101
VOLTAGE
DET
RESET
IC903
IC905
Q908,
IC904
+
-
Q902,
VOLUME-
VOLUME+
P. MODE
DISPLAY
B+ 2.7V
VOLTAGE
DET
IC761
(+2.8v)
VDD101
/AVLS
LCD VDD
TSB
BATT
VCC 2
IC820
IC852
IC851
IC751,752
IC853
IC710
IC302
IC301
(IC751)XCE
(IC752)XCE
(IC752)XCE
4
2
(IC810,851,852,853)
GND
IC810
MEGABASS
IC901
+B SWITCH
Q904
+B SWITCH
Q906
JOG
REW
FF
(L-CH)
SP1
(R-CH)
SP2
11
11
NW-E8P
2
3
4
5
6
7
8
9
A
1
B
C
D
E
F
G
Q833
BCE
Q701
GDS
C802
C808
C751
C617
C730
R702
R781
R778
R782
R772
R780
R707
R786
R787
R706
R924
R925
JC701
C803
R801
X801
R802
R806
R805
R804
R813
R812
R814
R810
R811
Q832
Q831
C752
C853
C852
C851
C801
C757 C728 C727
C720
C804
C733
C732
C702
C703
C704
C731
C734
C735
C737
C736
C719
C725
C726
C724
C723
C722
C721
C741
C740
C753
TP2
1
5
10
15
24
20
48
45
40
35
30
25
C755
R757
R764
R769
JC719
JC720
R776
R773
R705
R775
R774
R703
R767
R783
R770
R777
R779
R717
JC718
R716
JC704
R771
C709
R752
C710
JC712
C701
JC722
X701
TP702
TP3 TP701
TP703
(TEST)
C729
C739
C738
C738
IC820
CN701
USB
CONNECTOR
IC752
IC710
4
4
1
1
1
2
2
3
3
5
5
5
1
5
14
10
8
7
IC852
1
5
15
20
11
10
IC853
IC851
4
1
2
3
5
D784
D783
CN702
C616
C807
T701
IC761
IC810
4
1
2
3
1
5
10
15
24
20
48
45
40
35
30
25
IC751
13
(13)
1-681-242-
13
(13)
1-681-242-
MAIN BOARD (SIDE B)
MAIN BOARD (SIDE A)
FB702
FB704
P701
D781
FB703
*
1
1
2
10
10
C809
10
12
13
25
25
15
15
20
20
24
29
30
30
36
37
40
45
48
5
5
A
POWR BOARD
CN704
5-2. PRINTED WIRING BOARDS – MAIN SECTION –
D781
F-7
D783
F-2
D784
E-3
IC710
D-7
IC751
B-3
IC752
B-7
IC761
C-3
IC810
D-2
IC820
F-8
IC851
E-2
IC852
E-3
IC853
E-2
Q701
E-3
Q831
C-2
Q832
C-1
Q833
F-3
Ref. No.
Location
z
Semiconductor
Location
: Uses unleaded solder.
z
See page 9 for Notes.
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