NW-MS77DR - Sony Audio Service Manual (repair manual)

nw-ms77dr service manual
Model
NW-MS77DR
Pages
27
Size
817.71 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
nw-ms77dr.pdf
Date

Read Sony NW-MS77DR Service Manual online

NW-MS77DR
Canadian Model
AEP Model
UK Model
Tourist Model
SERVICE MANUAL
NETWORK WALKMAN
Sony Corporation
Audio&Video Business Group
Published by Sony Techno Create Corporation
9-877-781-04
2008J00-1
© 2008.10
SPECIFICATIONS
Ver 1.3  2008.10
Maximum recording time
When using the built-in flash memory only:
ATRAC3
ATRAC3plus
4 hr. 10 min. (132 kbps)
2 hr. (256 kbps)
5 hr. 20 min. (105 kbps)
8 hr. 40 min. (64 kbps)
8 hr. 30 min. (66 kbps)
11 hr. 40 min. (48 kbps)
When using “Memory Stick” (64MB):
ATRAC3
ATRAC3plus
60 min. (132 kbps)
30 min. (256kbps)
80 min. (105 kbps)
130 min. (64 kbps)
120 min. (66 kbps)
170 min. (48 kbps)
When using “Memory Stick” (128MB):
ATRAC3
ATRAC3plus
120 min. (132 kbps)
60 min. (256kbps)
160 min. (105 kbps)
260 min. (64 kbps)
240 min. (66 kbps)
350 min. (48 kbps)
Sampling frequency
44.1 kHz
Audio compression technology
Adaptive Transform Acoustic Coding3 (ATRAC3)
Adaptive Transform Acoustic Coding3plus
(ATRAC3plus)
Frequency response
20 to 20,000 Hz (single signal measurement during playback)
Output
Headphone: Stereo mini-jack
Signal-to-noise ratio (S/N)
79 dB or more (excluding ATRAC3 66 kbps)
Dynamic range
85 dB or more (excluding ATRAC3 66 kbps)
Operating temperature
5
°
C to 35
°
C (67
°
F to 95
°
F)
Power source
•  DC IN 1.2 V (from built-in rechargeable battery)
•  DC IN 4.5 V (from AC power adaptor)
•  USB power (from a computer through supplied USB cable)
Battery life (continuous playback)
ATRAC3 format: Approximately 44 hours
ATRAC3plus format: Approximately 36 hours
Dimension
36.4 x 48.5 x 18 mm (1 
7
/
16
 x 1 
15
/
16
 x 
23
/
32
 inches)
(w/h/d, projecting parts not included)
Mass
Approx. 54 g (1.9 oz) (“Memory Stick Duo” not included)
Supplied accessories
Recording USB cradle (1)
Headphones (1)
Dedicated USB cable (1)
AC power adaptor (for the supplied USB cradle) (1)
Carrying pouch (1)
Extension headphone cord (1)
Optical Digital cable (1)
Neck strap (1)
CD-ROM (1)
Operating Instructions (1)
SonicStage Operating Instructions (1)
Design and specifications are subject to change
without notice.
2
NW-MS77DR
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.
• IC401 (microcomputer), IC451 (frash RAM) on Main board
cannot be replaced individually.
Replace it with Main board assembly for service.
• IC461, 463 (frash RAM) on NAND board cannot be replaced
individually.
Replace it with NAND board assembly for service.
• When exchanging NAND board sub ASSY (for service),
SL701 of the B-side may be open.
In this case, please perform the solder bridge of SL701.
TABLE OF CONTENTS
Specifications ............................................................................ 1
1.
SERVICING NOTES
................................................ 3
2.
GENERAL
................................................................... 3
3.
TEST MODE
............................................................... 4
4.
DISASSEMBLY
4-1.
Disassembly Frow ........................................................... 5
4-2.
Case (U) Sub Assy, Play Unit .......................................... 5
4-3.
Lcd Board ........................................................................ 6
4-4.
Button (MS) Assy, Chassis (R) Assy ............................... 6
4-5.
NI-MH Battery, Power Board .......................................... 7
4-6.
Nand Board, Main Board ................................................ 7
5.
DIAGRAMS
5-1.
Block Diagrams ............................................................... 9
5-2.
Schematic Diagram – Main Section (1/2)– ..................... 10
5-3.
Schematic Diagram – Main Section (2/2)– ..................... 11
5-4.
Printed Wiring Boards – Main Section– .......................... 12
5-5.
Schematic Diagram – Lcd Section– ................................ 13
5-6.
Printed Wiring Boards – Lcd Section– ............................ 14
5-7.
Schematic Diagram – Nand Section– .............................. 15
5-8.
Printed Wiring Boards– Nand Section– .......................... 16
5-9.
Schematic Diagram – Power Section– ............................ 17
5-10. Printed Wiring Boards– Power Section– ......................... 18
6.
EXPLODED VIEWS
6-1.
Case Section .................................................................... 20
6-2.
Chassis Section ................................................................ 21
7.
ELECTRICAL PARTS LIST
.................................. 22
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
damaged by heat.
OpenMG and its logo are trademarks of Sony Corporation.
SonicStage and its logo are trademarks of Sony Corporation.
“MagicGate Memory Stick” is trademark of Sony Corporation.
“Memory Stick” and 
 
  are trademarks of Sony Corporation.
“Memory Stick Duo” and 
 are trademarks of Sony
Corporation.
“MagicGate” and 
 are trademarks of Sony Corporation.
ATRAC, ATRAC3, ATRAC3plus and their logos are trademarks
of Sony Corporation.
Microsoft, Windows and Windows Media are trademarks or
registered trademarks of Microsoft Corporation in the United
States and/or other countries.
US and foreign patents licensed from Dolby Laboratories.
All other trademarks and registered trademarks are trademarks or
registered trademarks of their respective holders.
In this manual, TM and R marks are not specified.
Ver 1.1
3
NW-MS77DR
SECTION 2
GENERAL
This section is extracted
from instruction manual.
Locating controls
For details about each part, refer to the pages in parentheses.
Network Walkman
Rear side
Front side
1 VOL (+/–) control 
2 Headphone plug 
3 Plug cover 
4 SOUND/AVLS button
5 “Memory Stick” Eject button
6 Display 
7 Shuttle switch
8 Play/Stop button
9 RESET button 
0 USB cradle connector 
qa HOLD (Locking controls) switch
qs MENU button 
You can switch to the Time display by
pressing the MENU button for a while.
qd Access lamp 
qf “Memory Stick” slot 
SECTION 1
SERVICING NOTES
[ Notes on using “Memory Stick Duo” ]
• Do not remove “Memory Stick Duo” during reading or writing data.
• Data may be damaged in the following cases.
– The Network Walkman is removed from the USB cradle or the dedicated USB cable is unplugged while reading or writing data.
– The “Memory Stick” is used in a location subject to static electricity or electric noise.
• Creating backup copies of important data is recommended.
[ Notes on formatting (initializing) ]
“Memory Stick Duo” is shipped with a FAT format as the standard format.
To format “Memory Stick”, please use devices conformable with the “Memory Stick”.
If “Memory Stick” is formatted using Windows Explorer, “FORMAT ERROR” will be displayed and audio files cannot be played on the
Network Walkman. On Windows XP, you can format “Memory Stick” properly. When you format “Memory Stick”, always perform
either one of the following:
•  Follow the instructions of “Formatting memory”.
•  Format using the supplied Sonic Stage software.
For details on how to format using the Sonic Stage software, refer to “Sonic Stage Online Help: Initializing an MG Memory Stick”.
[ Displaying on Windows Explorer ]
When you connect Network Walkman to your computer with the supplied USB cable, you can display the data stored on “Memory
Stick” or built-in flash memory as an external drive (for example, as the D drive) using Windows Explorer.
• Data transferred with the Sonic Stage software will be stored in a “HIFI” folder. Do not edit data stored in the “HIFI” folder using
Windows Explorer. Data copied or edited using Windows Explorer cannot be played on your Network Walkman.
• You can display data that has been stored on other “Memory Stick” compatible devices (JPEG,MPEG format, etc.,).
For information on how to handle data except in the “HIFI” folder, refer to the instruction manual that comes with the equipment with
which the recording has been done.
4
NW-MS77DR
• STANDING PROCEDURE
Procedure 1: In HOLD state, while pushing  Nx  button,
push [RESET] button.
Procedure 2: Insert the memory stick written “testmode.ind” to
NW-MS77DR.
• Preparation “testmode.ind”
Create a random text file in the root directory of Memory Stick
Duo on Windows, file it as the name “testmode” and rename it as
“testmode.ind”.
After starting up test mode, the following contents can be
checked.
• TEST  MODE
•   Nx  button
The KEY test mode is activated. All key inputs are completed,
then  Nx    button is pressed, restart. (Be aware that the
initialization is included on all key input.)
•  [MENU] button
EL1 (blue) lights on/off.
•   >  /  .  
h [GROUP +] / [GROUP -]
EL2 (green) lights on/off.
•   >  button
Charge control port=H (CN504 3, 4, 5 pin), ACCESS LED
lights on.
•   .  button
Charge control port=L (CN504 3, 4, 5 pin), ACCESS LED
lights off.
•  [GROUP +]  button
All LCD lights on.
•  [GROUP -] button
All LCD lights off.
•  [VOL +]  button
BEEP turns on.
•  [VOL -]  button
BEEP turns off.
•  [SOUND]  button
Initialized. (Turns to the factory preset state, time, volume
setting and so on.)
The music data, files and so on in the memory are not changed.
SECTION 3
TEST MODE
Page of 27
Display

Download Sony NW-MS77DR Service Manual (Repair Manual)

Here you can read online and download Sony NW-MS77DR Service Manual in PDF. NW-MS77DR service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony NW-MS77DR 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.