NW-E8P - Sony Audio Service Manual (repair manual)

Model
NW-E8P
Pages
22
Size
1.57 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
nw-e8p.pdf
Date

View Sony NW-E8P Service Manual online

NW-E8P
SERVICE MANUAL
NETWORK WALKMAN
SPECIFICATIONS
AEP Model
E Model
Recording time
Approx. 60 min. (132kbps)
Approx. 80 min. (105kbps)
Approx. 120 min. (66kbps)
Sampling frequency response
44.1kHz
Recording format
ATRAC3
Frequency response
20 to 20,000 Hz (single signal measurement)
Signal-to-noise ratio (S/N)
More than 80dB (excluding 66 kbps)
Dynamic range
More than 85dB (excluding 66 kbps)
Operating temperature
5
°C to 35°C (-41°F to 95°F)
Power source
LR03 (Size AAA) alkaline battery
Battery life
Approx. 7 hours
Mass (approx.)
90g (3.2 oz) (battery included)
Memory capacity
64MB (including the system software: 60.6MB
available)
Supplied accessories
LR03 (Size AAA) alkaline battery (1)
Attachments (1 for left, 1 for right)
Dedicated USB cable (1)
Carrying pouch (1)
CD-ROM (OpenMG Jukebox installation disc) (1)
NW-E8P Operating Instructions (1)
OpenMG Jukebox Operating Instructions (1)
Design and specifications are subject to change without notice.
Ver 1.1  2002.10
9-873-342-02
2002J0200-1
© 2002.10
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
2
NW-E8P
Specifications ............................................................................... 1
1. SERVICING NOTE
.......................................................... 2
2. GENERAL
.......................................................................... 3
3. DISASSEMBLY
3-1. Driver ASSY (SP2), Arm Lid (R), Holder Lid (R) ......... 6
3-2. Main Board, Power Board, LCD Unit ............................ 6
3-3. Driver ASSY (SP1), Arm Lid (L), Holder Lid (L) ......... 7
4. TEST MODE
...................................................................... 8
5. DIAGRAMS
5-1. Block Diagrams ............................................................ 10
5-2. Printed Wiring Boards (Main Section) ......................... 11
5-3. Schematic Diagram (Main Section (1/2)) ..................... 12
5-4. Schematic Diagram (Main Section (2/2)) ..................... 13
5-5. Printed Wiring Boards (Power Section) ........................ 14
5-6. Schematic Diagram (Power Section) ............................ 15
6. EXPLODED VIEW
6-1. L-CH Section ................................................................ 17
6-2. R-CH Section ................................................................ 18
7. ELECTRICAL PARTS LIST
....................................... 19
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270
°
C during
repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering or
unsoldering.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
TABLE OF CONTENTS
• Replacement of CXD9644GG (IC710) used in the set requires a special
tool.
z
  UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the
lead-free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed
with the lead free mark due to their particular size.)
 : LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40
°
C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to
be applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set
to about 350
°
C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to
flow) than ordinary solder so use caution not to let solder
bridges occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder
may also be added to ordinary solder.
z
  USABLE FORMAT
Use ISO9660 Level 1 format.
SECTION 1
SERVICING NOTE
3
NW-E8P
SECTION 2
GENERAL
LOCATION AND FUNCTION OF CONTROLS
This section is extracted from
instruction manual.
(front of the right player)
Display
1
 AVLS indication
2
 MEGA BASS indication
3
 Battery remain indication
4
 Play mode indication
5
 Text/graphic information display
1
 DISPLAY button
2
 VOLUME+/– button
3
 HOLD switch
4
 Jog lever
5
 Dedicated USB jack
6
 Display
7
 MEGA BASS/AVLS button
8
 P.MODE button
9
 Ear pad
0
 Battery compartment
1
2
3
4
5
6
7
8
(rear of the left player)
9
0
1
2
3
4
5
4
NW-E8P
8
Transferring songs from the computer to
Network Walkman (Check-out)
In order to check out digital audio files from your computer, first you must install the supplied
OpenMG Jukebox software and then import digital audio files to OpenMG Jukebox.
For details, refer to the OpenMG Jukebox operating Instructions.
1
Connect Network Walkman to your computer
Connect the narrow connector of the supplied dedicated USB cable into the dedicated USB jack on
Network Walkman, then the wide connector to the USB jack of your computer.
“CONNECT” appears in the display.
Notes
• Do not connect more than two USB devices (player) to your computer. Normal operation will not be
guaranteed.
• If you use this player with a USB hub or a USB extension cable normal operation is not guaranteed.
• A malfunction may occur depending on the USB devices connected at any one time.
• Be sure to insert a fresh Alkaline battery into the unit. If the battery is not inserted, or battery power is
exhausted, the unit will not be identified by the computer.
• When connecting Network Walkman to your computer for the first time, the USB driver Installer window
appears. Please follow the instructions in the Installer window.
• Connect Network Walkman only as necessary. Disconnect the dedicated USB cable when not needed.
2
Transfer the music file to Network Walkman (Check-out)
For details on how to operate, refer to the OpenMG Jukebox Operating Instructions.
Tip
To transfer the song back to the computer (check-in), refer to the OpenMG Jukebox software instruction manual
or the online help.
Basic Operations
Dedicated USB cable (supplied)
to the USB jack
to the dedicated
USB jack
9
Basic Operations
Listening to music with Network
Walkman
Please insert the battery before use (see page 7).
Note
When using Network Walkman, be sure to disconnect it from the computer.
   Putting the player on your ears
continued
Notes
• Please remove earrings.
• If you wear the glasses, remove your glasses before
putting on this player and put them on again.
• Be sure not to open the attaching part more than
2 cm. Otherwise, this player may deform and
might not sit on your ears comfortably. Note that
if you press the player to opposite side, it also
may deform.
1
Pinch the center of
the player with your
thumb and middle
finger, and then open
the attaching part
with your forefinger.
2
Hook the cured part
around the back of your
ear and twist it to the
earlobe direction to sit it
on your ear. If your hair
hangs over your ear,
please push back your
hair before attaching it.
3
Adjust the position of
the player to fix it
comfortably.
If you cannot attach the player to your ear comfortably
Confirm the position of the player with a mirror. In the correct position, your ears should appear as
illustrated. if your ears are small and not visible as shown, use the supplied attachments (see page 15).
To remove the player from your ears
Twist the player to the opposite direction when attaching it, and remove it.
The attaching
part of this player
would be open
(be apart)
flexibly.
Hook the
edge of the
attaching part
to the back of
your ear and
twist it.
k
k
2cm
10
Listening to music with Network Walkman (continued)
2
    Release the HOLD function
If the HOLD switch is in the arrow direction ( the yellow mark is
visible), slide it to the opposite direction to release the HOLD function.
3
    Start playback
If playback does not start
Make sure the HOLD function is released.
To stop playback
Press the Jog lever Bx.
Tip
If you do not operate the player for 3 seconds while in stop mode, the display automatically turns off.
1
Press the Jog lever
Bx
. Playback starts.
When playback ends,
the playback
automatically stops
(in the case the player
is set to REPEAT OFF).
2
 VOLUME
+/– button to adjust
the volume.
HOLD switch
H
O
L
D
FF
11
Basic Operations
On other operations
To
Go to the beginning
of the next track
Go to the beginning
of succeeding
tracks 
1)
Go to the beginning
of the current track
Go to previous
tracks  
1)
Go forward 
2)
Go backward 
2)
Operation of
the Jog lever
Press in the FF direction
once.
Press in the FF direction
repeatedly.
Press in the REW direction
once.
Press in the REW direction
repeatedly.
During playback, press in
the FF direction and hold .
During playback, press in
the REW direction and
hold.
FF direction
Jog lever
REW direction
1)
While in stop mode, press the Jog lever in the FF
direction and hold, you can go to the beginning of
the next track and succeeding tracks continuously.
While in stop mode press the Jog lever in the REW
direction and hold, you can go to the beginning of
the current track and previous tracks continuously.
2)
If you press and hold in the FF or REW direction
for more than 5 seconds, the search speed
increases.
continued
5
NW-E8P
12
Play status
During playback: 
 or 
 is
displayed alternately.
In stop mode: 
 is displayed.
While locating tracks: > or
.
 is displayed.
While searching a point in a track:
M
 or m is displayed.
When you play back songs for
more than 15 seconds, a wave
pattern is displayed.
Track
number
4
3
2
1
5
Changing the display mode
Press the DISPLAY button while the wave is
displayed during playback and the track
number is displayed.
About the backlight
If you perform the following operation, the
backlight lights up for a few seconds.
• Press the buttons (VOLUME+/--, DISPLAY,
P.MODE, MEGABASS/AVLS)
• Operate the Jog lever
Note
In a bright place, the backlight may not be
apparent.
m
DISPLAY
button
Track
number
Volume
indication
(Displayed
numerically.
Max. volume is
31)
Play status
Play status
Listening to music with Network Walkman (continued)
On the display
1 AVLS indication (page 13)
The indication lights up while the AVLS
function is activated.
2 MEGA BASS indication (page 13)
The indication lights up while the MEGA
BASS function is activated.
3 Battery remain indication (page 7)
The remaining battery power is
displayed.
4 Play mode indication (page 14)
The selected play mode is displayed.
5
Play status/Track number display
The following information is displayed
according to the display mode.
15
Advanced Operations
Attaching the attachments
If your ears are small and you cannot attach the player correctly, use the supplied attachments.
Example for left ear
L
R
2
Lift its edge and turn it in the
direction of the arrow to remove it.
1
Pull the edge of the attachment in
the direction of the arrow.
To remove the attachment
3
 Press the point shown by the arrow to
secure it.
2
 Turn the attachment to click into place.
Engage the pin in the slot as shown, and
insert the attachment.
1
pin
For left ear
For right ear
6
NW-E8P
SECTION 3
DISASSEMBLY
Note :
 Follow the disassembly procedure in the numerical order given.
<R-CH section>
3-1. DRIVER ASSY (SP2), ARM LID (R), HOLDER LID (R)
<R-CH section>
3-2. MAIN BOARD, POWER BOARD, LCD UNIT
z
 The equipment can be removed using the following procedure.
Driver ASSY (SP2), Arm lid (R), Holder lid (R)
<R-CH section>
<L-CH section>
Main board, Power board, LCD unit
Set
Driver ASSY (SP1), Arm lid (L), Holder lid (L)
8
6
3
1
LCD unit
Holder (R) ASSY
Arm lid (R)
4
 Remove solder
(2 places)
2
 Turn to clockwise 
to release lock.
Red
Black
Black
7
 Screw B1.7x5
5
 Screws 
B1.7x5
7
 Screw 
B1.7x5
Front plate
Red
Ear pad
Driver ASSY (SP2)
Driver ASSY
Marking (red)
Red
Glue
Black
• Connection of driver ASSY
Arm lid (R) (rear side)
• Installation of holder lid (R) 
and arm lid (R)
Claw
Holder lid (R) (rear side)
Holder lid (R)
5
3
1
Holder (R) ASSY
2
 LCD flexible board
(Power board: CN705)
Power board
LCD unit
Knob (HOLD)
Cord (4 core)
4
 Remove solder
(4 places)
Red
Red/clear (rear side)
Green/clear
Green
CN704
CN702
Main board
HOLD switch
(S704)
z
 Caution during assembly
Align HOLD switch (S704) with 
the position of knob (HOLD).
7
NW-E8P
<L-CH section>
3-3. DRIVER ASSY (SP1), ARM LID (L), HOLDER LID (L)
9
6
3
1
Driver ASSY
Ear pad
Marking 
(red)
Red
Glue
Black
• Connection of driver ASSY
Red
Black
Black
Green
Red
Red
Red/clear
Green/clear
Cord (4 core)
• Wiring of cord (4 core)
Arm lid (L)
Front plate
2
 Turn to clockwise 
to release lock.
5
 Screws 
B1.7x5
8
 Screw 
B1.7x5
8
 Screws B1.7x5
7
 Open the battery lid.
Driver ASSY (SP1)
Holder lid (L)
Holder (L) ASSY
MDD flexible board
4
 Remove solder
(2 places)
Note:
When soldering, 
paying attention as 
holder (L) doesn’t 
transform it by a heat.
• Installation of holder lid (L) 
and arm lid (L)
Claw
Holder lid (L)
Lid (L), arm
(rear side)
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.
Turn the HOLD switch to ON. While holding down the Bx key, press the following keys in the following order :
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
board.
Test mode
Short : Test mode
Open : Normal mode
(
    )
1
4
regulated
DC power supply
Connecting cable
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
check
Low DC
detection
check
(+)
Supply 0.9V DC to battery 
terminal and press (–) key.
Supply 1.24V DC to battery 
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.
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.
Lead layout of
conventional IC
CSP (chip size package)
*
Replacement of IC710 used in the set requires a spe-
cial tool.
• Lead Layouts
surface
z
 Waveforms
1
VOLT/DIV : 0.5 V AC
TIME/DIV : 0.2 nsec
Note on Schematic Diagram:
• All capacitors are in 
µ
F unless otherwise noted.  pF: 
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in 
 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
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• 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.
*
Replacement of IC710 used in the set requires a spe-
cial tool.
2
VOLT/DIV : 1 V AC
TIME/DIV : 20 
µ
sec
VOLT/DIV : 1 V AC
TIME/DIV : 20 
µ
sec
3
Q902 
D
IC901 
5
 EXT
VOLT/DIV :1 V AC
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
LPF2
IN B
IN A
BEEP OUTB
BEEP OUTA
OUTA
OUTB
AGC IN
PW SW
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
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
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 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
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

Download Sony NW-E8P Service Manual (Repair Manual)

Here you can view online and download Sony NW-E8P Service Manual in PDF. NW-E8P service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony NW-E8P Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.