Pioneer Elite N-50 User manual

ORDER NO.
PIONEER CORPORATION 1-1, Shin-ogura, Saiwai-ku, Kawasaki-shi, Kanagawa 212-0031, Japan
PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936
PIONEER CORPORATION
2012
2012 Printed in Japan
 /I STANDBY/ON
STANDBY
iPod/USB
5V 2.1A
PURE AUDIO Hi-Bit32
FUNCTION 


NETWORK AUDIO PLAYER N-50
N-50 RRV4272
NETWORK AUDIO PLAYER
N-50
N-50-K
N-50-S
N-30
N-30-K
N-30-S
THISMANUAL ISAPPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model Type Power Requirement Remarks
N-50 CUXE AC 120V
N-50-K SYXE8 AC 220V to 240V
N-50-S SYXE8 AC 220V to 240V
N-30 CUXE AC 120V
N-30-K SYXE8 AC 220V to 240V
N-30-S SYXE8 AC 220V to 240V
K-FZV FEB.

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SAFETY INFORMATION
1. SAFETY PRECAUTIONS
The following check should be performed for the
continued protection of the customer and service
technician.
LEAKAGE CURRENT CHECK
Measure leakage current to aknown earth ground
(water pipe, conduit, etc.) by connecting aleakage
current tester such as Simpson Model 229-2 or
equivalent between the earth ground and all exposed
metal parts of the appliance (input/output terminals,
screwheads, metal overlays, control shaft, etc.). Plug
the AC line cord of the appliance directly into a120V
AC 60 Hz outlet and turn the AC power switch on. Any
current measured must not exceed 0.5 mA.
ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL
SHOCK HAZARD AND MUST BE CORRECTED BEFORE
RETURNINGTHE APPLIANCETOTHE CUSTOMER.
2. PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in the appliance
have special safety related characteristics. These are
often not evident from visual inspection nor the protection
afforded by them necessarily can be obtained by using
replacement components rated for voltage, wattage, etc.
Replacement parts which have these special safety
characteristics are identified in this Service Manual.
Electrical components having such features are
identified by marking with a>on the schematics and on
the parts list in this Service Manual.
The use of asubstitute replacement component which
does not have the same safety characteristics as the
PIONEER recommended replacement one, shown in the
parts list in this Service Manual, may create shock, fire,
or other hazards.
Product Safety is continuously under review and new
instructions are issued from time to time. For the latest
information, always consult the current PIONEER Service
Manual. A subscription to, or additional copies of,
PIONEER Service Manual may be obtained at anominal
charge from PIONEER.
Leakage
current
tester
Reading should
not be above
0.5 mA
Device
under
test
Test all
exposed metal
surfaces
Also test with
plug reversed
(Using AC adapter
plug as required)
Earth
ground
AC Leakage Test
(FOR USA MODEL ONLY)
WARNING
Thisproduct containslead in solder and certain electrical partscontain chemicalswhich are known to the state of California to
cause cancer, birth defectsor other reproductive harm. 56noitisoporP-6.94252noitceSedoCytefaS&htlaeH
NOTICE
(FOR CANADIAN MODEL ONLY)
Fuse symbols (fast operating fuse) and/or (slow operating fuse) on PCB indicate that replacement parts must
be of identical designation.
REMARQUE
(POUR MODÈLE CANADIEN SEULEMENT)
Les symboles de fusible (fusible de type rapide) et/ou (fusible de type lent) sur CCI indiquent que les pièces
de remplacement doivent avoir lamême désignation.
Thisservice manual isintended for qualified service technicians; it isnot meant for the casual do-it-
yourselfer. Qualified technicianshave the necessary test equipment and tools, and have been trained
to properly and safely repair complex productssuch asthose covered by thismanual.
Improperly performed repairscan adversely affect the safety and reliability of the product and may
void the warranty. If you are not qualified to perform the repair of thisproduct properly and safely, you
should not risk trying to do so and refer the repair to a qualified service technician.

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CONTENTS
SAFETY INFORMATION..........................................................................................................................................................2
1. SERVICE PRECAUTIONS....................................................................................................................................................4
1.1 NOTES ON SOLDERING...............................................................................................................................................4
2. SPECIFICATIONS.................................................................................................................................................................5
2.1 ACCESSORIES..............................................................................................................................................................5
2.2 SPECIFICATIONS..........................................................................................................................................................5
2.3 PLAYABLE FILE FORMATS ...........................................................................................................................................6
3. BASIC ITEMS FOR SERVICE ............................................................................................................................................10
3.1 CHECK POINTS AFTER SERVICING .........................................................................................................................10
3.2 PCB LOCATIONS.........................................................................................................................................................11
3.3 JIGS LIST.....................................................................................................................................................................12
4. BLOCK DIAGRAM ..............................................................................................................................................................14
4.1 OVERALL CONNECTION DIAGRAM (1/2)..................................................................................................................14
4.2 OVERALL CONNECTION DIAGRAM (2/2)..................................................................................................................16
4.3 BLOCK DIAGRAM........................................................................................................................................................18
5. DIAGNOSIS ........................................................................................................................................................................20
5.1 TROUBLESHOOTING..................................................................................................................................................20
5.2 PROTECTION CIRCUIT ERROR DETECTION...........................................................................................................23
5.3 HOW TO CHECK THE IC COMMUNICATION.............................................................................................................24
5.4 IC INFORMATION ........................................................................................................................................................24
6. SERVICE MODE.................................................................................................................................................................25
6.1 SERVICE MODE ..........................................................................................................................................................25
6.2 INITIAL SETTING.........................................................................................................................................................27
7. DISASSEMBLY ...................................................................................................................................................................28
8. EACH SETTING AND ADJUSTMENT................................................................................................................................34
8.1 FIRMWARE UPDATE ...................................................................................................................................................34
8.2 HOW TO CHECK EACH TERMINAL............................................................................................................................37
9. EXPLODED VIEWS AND PARTS LIST...............................................................................................................................40
9.1 PACKING SECTION.....................................................................................................................................................40
9.2 EXTERIOR SECTION..................................................................................................................................................42
10. SCHEMATIC DIAGRAM....................................................................................................................................................44
10.1 JACK ASSY................................................................................................................................................................44
10.2 D-MAIN ASSY (1/5)....................................................................................................................................................46
10.3 D-MAIN ASSY (2/5)....................................................................................................................................................48
10.4 D-MAIN ASSY (3/5)....................................................................................................................................................50
10.5 D-MAIN ASSY (4/5)....................................................................................................................................................52
10.6 D-MAIN ASSY (5/5)....................................................................................................................................................54
10.7 DAC ASSY..................................................................................................................................................................56
10.8 LCD/KEY ASSY..........................................................................................................................................................58
10.9 LED ASSY, POWER SW ASSY, IR ASSY AND POWER LED ASSY ........................................................................60
10.10 USB ASSY................................................................................................................................................................62
10.11 STBY ASSY..............................................................................................................................................................64
10.12 CNT A ASSY AND CNT B ASSY .............................................................................................................................66
10.13 GUIDE 1, GUIDE 2(N-50, N-50-K/-S ONLY), GUIDE 3 AND GUIDE 4 ASSYS.......................................................68
11. PCB CONNECTION DIAGRAM........................................................................................................................................70
11.1 JACK ASSY................................................................................................................................................................70
11.2 D-MAIN ASSY ............................................................................................................................................................72
11.3 DAC ASSY..................................................................................................................................................................76
11.4 LCD/KEY ASSY..........................................................................................................................................................80
11.5 LED ASSY, POWER SW ASSY, IR ASSY AND POWER LED ASSY ........................................................................82
11.6 USB ASSY AND STBY ASSY....................................................................................................................................84
11.7 CNT A ASSY AND CNT B ASSY ...............................................................................................................................88
11.8 GUIDE 1, GUIDE 2 (N-50, N-50-K/-S ONLY), GUIDE 3 AND GUIDE 4 ASSYS........................................................90
12. PCB PARTS LIST..............................................................................................................................................................92

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1. SERVICE PRECAUTIONS
1.1 NOTESON SOLDERING
• For environmental protection, lead-free solder is used on the printed circuit boards mounted in this unit.
Be sure to use lead-free solder and a soldering iron that can meet specifications for use with lead-free solders for repairs
accompanied by reworking of soldering.
• Compared with conventional eutectic solders, lead-free solders have higher melting points, by approximately 40 ºC.
Therefore, for lead-free soldering, the tip temperature of a soldering iron must be set to around 373 ºC in general, although
the temperature depends on the heat capacity of the PC board on which reworking is required and the weight of the tip of
the soldering iron.
Do NOT use a soldering iron whose tip temperature cannot be controlled.
Compared with eutectic solders, lead-free solders have higher bond strengths but slower wetting times and higher melting
temperatures (hard to melt/easy to harden).
The following lead-free solders are available as service parts:
• Parts numbers of lead-free solder:
GYP1006 1.0 in dia.
GYP1007 0.6 in dia.
GYP1008 0.3 in dia.

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2. SPECIFICATIONS
2.1 ACCESSORIES
2.2 SPECIFICATIONS
Remote control unit (8300764100010-IL)
AAA/R03dry cell battery x 2
Audio cable (L063102020050-IL)
AC Power cord (N-50, N-30 :L068125130010-IL)
(N-50-K/-S, N-30-K/-S:L068250160020-IL)
Warranty card (N-50-K/-S, N-30-K/-S:ARY7128)
Safety sheet (N-50-K/-S, N-30-K/-S:5227000002330-IL)
Caution sheet (N-50, N-30 :5227000002270-IL)
(N-50-K/-S, N-30-K/-S:5227000002280-IL)
Operating instructions (N-50, N-30 :5707000006130-IL)
(N-50-K/-S, N-30-K/-S:5707000006140-IL)
(N-50-K/-S, N-30-K/-S:6517000000450-IL)
•Generalites
System. . . . . . . . . . . . . . . . . . . . .Network Audio Player
Power requirements. . . . . . . . . . . . . . .AC 120 V, 60 Hz
(N-50, N-30)
Power requirements. . .AC 220 V to AC240V, 50/60 Hz
(N-50-K/-S, N-30-K/-S)
Power consumption
N-50, N-50-K/-S. . . . . . . . . . . . . . . . . . . . . . . .34 W
N-30, N-30-K/-S. . . . . . . . . . . . . . . . . . . . . . . .31 W
Power consumption (In standby mode). . . . . . . . 0.3W
Weight (without package)
N-50, N-50-K/-S. . . . . . . . . . . . . . . . .7.3kg (16.1 lb)
N-30, N-30-K/-S. . . . . . . . . . . . . . . . . . 5.0 kg (11 lb)
Dimensions
. . . . . .435 mm (W) x 99 mm (H) x 330 mm (D)
(17 3/16 in. (W) x 315/16 in. (H) x 13in. (D))
. . . . 435 mm (W) x 97.5 mm (H) x 330 mm (D)
(17 3/16 in. (W) x 315/16 in. (H) x 13in. (D))
Operating temperature. . . . . .. . . . . . . . +5 °C to +35 °C
Operating humidity. . . . . . . . . . . . . . . . . . . 5 % to 85 %
•Network
Ethernet interface. . . . . . . . . 10 BASE-T/100 BASE-TX
DLNA. . . . . . . . . . . . . . . . . . . . . . . Ver 1.5 (DMP/DMR)
•Analog audio output
Output level (During audio output)
. . . . . . . . . . . . . . . . . . . . . . . . . . 2 V rms (1 kHz, 0 dB)
Number of channels. . . . . . . . . . . . . . . . . . . . . . . . . . .2
Jack . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . RCA
Frequency response. . . . . . . . . . 4 Hz to 80 kHz –3dB
Signal-to-Noise Ratio
1 kHz, 0 dB, fs 192 kHz . . . .. . . . . . . . . . . . >111 dB
Dynamic range
1 kHz, 0 dB, fs 192 kHz . . . . . . . . . . . . . . . >111 dB
Total harmonic distortion
1 kHz, 0 dB, fs 192 kHz . . . . . . .. . . . . . . . .<0.002 %
Channel separation
1 kHz, 0 dB, fs 192 kHz . . . . . . . . . . . . . . . >105 dB
•Digital audio output
Coaxial digital output. . . . . . . . . . . . . . . . . . . . RCA jack
Optical digital output . . . . . . . . . . . . . Optical digital jack
•Digital audio input (N-50, N-50-K/-S only)
Coaxial digital input . . . . . . . . . . . . . . . . . . . . RCA jack
Optical digital input . . . . . . . . . . . . . . Optical digital jack
USB type-B . . . . . . . . . . . . . . . . . . . . . . . . .USB 2.0 HS
Note
•Specifications and the design are subject to
possible modifications without notice, due to
improvements.
• This product is not designed for use in Japan.
N-50, N-50-K/-S
N-30, N-30-K/-S

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2.3PLAYABLE FILE FORMATS
This unit supports the following file formats.
• Note that some file formats are not available for
playback although they are listed as playable file
formats.
• If an attempt is made to play files with unsupported
formats, the sound may be intermittent or be
accompanied by noise. In such cases, confirm that
the file format is compatible with this unit.
• The compatibility of file formats varies depending
on the type of server. Check with your server to
ensure the compatibility of file formats supported
by your server.
• Depending on the server, some file types not
supported by this unit may be converted and
output. For details, consult the server’s operating
instructions.
• Internet radio playback may be affected by the
Internet communications environment, and in this
case playback may not be possible even with the file
formats listed here
Category Extension Stream
MP3
<*1> .mp3MPEG-1
Audio
Layer-3
Sampling
frequency 32kHz to 48kHz
Quantizat
ion bitrate 16bit
Channel
Bitrate 320kbps
VBR/CBR Supported
LPCM —
<*2> LPCM
Sampling
frequency 32kHz to 48kHz
(Internet
Radio)
44.1 kHz,
48kHz,
88.2 kHz,
96 kHz,
192 kHz
(Digital In
USB)
Quantizat
ion bitrate 16bit (Internet
Radio)
16bit,
24bit, 32bit
(Digital In
USB)
Channel
WAV .wav LPCM
Sampling
frequency 32 kHz to 192kHz
(Music
Server)
32kHz to
96kHz
(USB)
Quantizat
ion bitrate 16bit, 20bit, 24bit
Channel
WMA .wmaWMA2/7/
8/9/10
Sampling
frequency 32kHz to 48kHz
Quantizat
ion bitrate 16bit
Channel
Bitrate 320kbps
VBR/CBR Supported
Category Extension Stream
2ch
2ch
8kbps to
Supported/
2ch
2ch
5kbps to
Supported/

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AAC
.m4a
.aac
.3gp
.3g2
MPEG-4
AAC
MPEG-4
HE AAC
(AAC Plus
v1/2)
Sampling
frequency 32kHz to 48kHz
Quantizat
ion bitrate 16bit
Channel
Bitrate 320kbps
VBR/CBR Supported
FLAC .flac FLAC
Sampling
frequency 32 kHz to 192kHz
(Music
Server)
32kHz to
96kHz
(USB)
Quantizat
ion bitrate 16bit, 24bit
Channel
*1 “MPEG Layer-3audio decoding technology licensed
from Fraunhofer IISand Thomson multimedia.”
*2 Only streaming datafrom servers is concerned, so there
is no extension.
Category Extension Stream
2ch
2ch
16kbps to
Supported/
About network playback
The network playback function such as Internet Radio or
Music Server of this unit uses the following
technologies:
WindowsMedia Player
Windows MediaPlayer 11/Windows MediaPlayer 12.
WindowsMedia DRM
Microsoft Windows MediaDigital Rights Management
(WMDRM) is aplatform to protect and securely deliver
content for playback on computers, portable devices and
network devices. Music Server functions as aWMDRM
10 for networked devices. WMDRM protected content
can only be played on mediaservers supporting
WMDRM.
Content owners use WMDRM technology to protect their
intellectual property, including copyrights. This device
uses WMDRM software to access WMDRM protected
content. If the WMDRM software fails to protect the
content, content owners may ask Microsoft to revoke the
software’s ability to use WMDRM to play or copy protected
content. Revocation does not affect unprotected content.
When you download licenses for protected content, you
agree that Microsoft may include a revocation list with the
licenses. Content owners may require you to upgrade
WMDRM to access their content. If you decline an
upgrade, you will not be able to access content that
requires the upgrade.
This product is protected by certain intellectual property
rights of Microsoft. Use or distribution of such technology
outside of this product is prohibited without a license from
Microsoft.
DLNA
DLNA CERTIFIED
®Audio Player

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The Digital Living Network Alliance (DLNA) is across-
industry organization of consumer electronics,
computing industry and mobile device companies.
Digital Living provides consumers with easy sharing of
digital mediathrough awired or wireless network in the
home.
The DLNA certification logo makes it easy to find
products that comply with the DLNA Interoperability
Guidelines. This unit complies with DLNA
Interoperability Guidelines v1.5.
When aPC running DLNA server software or other DLNA
compatible device is connected to this player, some
setting changes of software or other devices may be
required. Please refer to the operating instructions for
the software or device for more information.
DLNA®, the DLNA Logo and DLNA CERTIFIED
®
are
trademarks, service marks, or certification marks of the
Digital Living Network Alliance.
Content playable over a network
• Even when encoded in acompatible format, some
files may not play correctly.
• Movie or Photo files cannot be played back.
• There are cases where you cannot listen to an
Internet radio station even if the station can be
selected from alist of radio stations.
• Some functions may not be supported depending
on the server type or version used.
• Supported file formats vary by server. As such, files
not supported by your server are not displayed on
this unit. For more information check with the
manufacturer of your server.
Disclaimer for Third Party Content
ACCESS TO THIRD PARTY CONTENT SERVICES,
INCLUDING ALL ASSOCIATED FEATURESAND
FUNCTIONALITIES, ISPROVIDED“ASIS,” “AS
AVAILABLE” AND AT THE USER’SOWN RISK,
WITHOUT WARRANTY OF ANY KIND. PIONEER
DISCLAIMSALL WARRANTIES, EXPRESS OR IMPLIED,
IN CONNECTION WITH ACCESS TO AND USE OF
CONTENT SERVICESTHROUGH THISDEVICE,
INCLUDING WITHOUT LIMITATION WARRANTIESOF
MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS
FOR A PARTICULAR PURPOSE, AND NON-
INFRINGEMENT. PIONEER DOESNOT GUARANTEE,
REPRESENT, OR WARRANT THAT CONTENT SERVICES
WILL BE FREE FROM ERRORS, INTERRUPTION, LOSS,
CORRUPTION, ATTACK, VIRUSES, INTERFERENCE,
HACKING, OR OTHER SECURITY INTRUSION, AND
PIONEER DISCLAIMSANY LIABILITY IN CONNECTION
WITH THE FOREGOING. PIONEER ISNOT LIABLE OR
RESPONSIBLE FOR ANY LOSS OR DAMAGE ARISING
N-50/N-30 only
FROM ACCESS TO OR USE OFCONTENT. NO ORAL OR
WRITTEN INFORMATION OR ADVICE GIVEN BY
PIONEER OR ITSCUSTOMER SERVICES
REPRESENTATIVESWILL CREATE ANY SUCH
WARRANTY.
IN NO EVENT WILL PIONEER,ITSAFFILIATES, OR THEIR
RESPECTIVE OFFICERS, DIRECTORS, OR EMPLOYEES
BE LIABLE IN CONNECTION WITH YOUR USE OF THIRD
PARTY CONTENT SERVICESTHROUGH THISDEVICE
FOR PERSONAL INJURY OR SPECIAL, INCIDENTAL,
INDIRECT OR CONSEQUENTIAL DAMAGESOF ANY
KIND, INCLUDING WITHOUT LIMITATION DAMAGES
FOR ATTORNEY’SFEES, LOST DATA OR LOST PROFITS,
REGARDLESS OF THE THEORY OF LIABILITY AND
WHETHER OR NOT ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES. IN NO EVENT WILL PIONEER’S
TOTAL LIABILITY TO YOU FOR ALL DAMAGESARISING
FROM THE USE OR INABILITY TO USE THIRD PARTY
CONTENT SERVICES(OTHER THAN ASMAY BE
REQUIRED BY LAW IN CASESINVOLVING PERSONAL
INJURY) EXCEED $10.00. THE FOREGOING
LIMITATIONSWILL APPLY EVEN IF THE ABOVE
REMEDY FAILSOF ITSESSENTIAL PURPOSE. IF ANY
APPLICABLE AUTHORITY HOLDSANY PORTION OF
THISSECTION TO BE UNENFORCEABLE, THEN
LIABILITY WILL BE LIMITEDTO THE MAXIMUM EXTENT
PERMITTED BY APPLICABLE LAW.
About playback behavior over a network
• Playback may stall when the PC is switched off or
any mediafiles stored on it are deleted while
playing content.
• If there are problems within the network
environment (heavy network traffic, etc.) content
may not be displayed or played properly (playback
may be interrupted or stalled). For best
performance, a100BASE-TX connection between
player and PC is recommended.
• If several clients are playing simultaneously, as the
case may be, playback is interrupted or stalled.
• Depending on the security software installed on a
connected PC and the setting of such software,
network connection may be blocked.
N-50/N-30 only
Disclaimer for Third Party Content
Access to content provided by third parties requires a
high speed internet connection and may also require
account registration and apaid substruction.
Therd party content services may be changed,
suspended, interrupted, or discontinued at any time
without notice, and Pionner disclaims any liability in
connection with such occurrences.
Pionner does not represent or warrant that content
services will continue to be provieded or available for a
particular period of time, and any such warranty, express
or implied, is disclaimed. N-50-K/-S, N-30-K/-Sonly

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Pioneer is not responsible for any malfunction of the
player and/or the Music Server features due to
communication error/malfunctions associated with your
network connection and/or your PC, or other connected
equipment. Please contact your PC manufacturer or
Internet service provider.
Windows Media is either a registered trademark or
trademark of Microsoft Corporation in the United States
and/or other countries.
This product includes technology owned by Microsoft
Corporation and cannot be used or distributed without a
license from Microsoft Licensing, Inc.
Microsoft ®, Windows®7, Windows®Vista, Windows®XP,
Windows®2000, Windows®Millennium Edition,
Windows®98, and WindowsNT®are either registered
trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries.
Authorizing thisunit
In order to be able to play with Music Server, this unit
must be authorized. This happens automatically when
the unit makes aconnection over the network to the PC.
If not, please authorize this unit manually on the PC.
The authorization (or permission) method for access
varies depending on the type of server currently being
connected. For more information on authorizing this
unit, refer to the instruction manual of your server.
aacPlus
The AAC decoder uses aacPlus developed by Coding
Technologies
(www.codingtechnologies.com).
FLAC
FLAC Decoder
Copyright c 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
Josh Coalson
Redistribution and use in source and binary forms, with
or without modification, are permitted provided that the
following conditions are met:
• Redistributions of source code must retain the
above copyright notice, this list of conditions and
the following disclaimer.
• Redistributions in binary form must reproduce the
above copyright notice, this list of conditions and
the following disclaimer in the documentation and/
or other materials provided with the distribution.
• Neither the name of the Xiph.org
Foundation nor the names of its contributors may
be used to endorse or promote products derived
from this software without specific prior written
permission.
THISSOFTWARE ISPROVIDED BY THE COPYRIGHT
HOLDERSAND CONTRIBUTORS“ASIS” AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
NOT LIMITED TO, THE IMPLIED WARRANTIESOF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
FOUNDATION OR CONTRIBUTORSBE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
OF SUBSTITUTE GOODSOR SERVICES; LOSS OF USE,
DATA, OR PROFITS; ORBUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
About iPod/iPhone/iPad
“Made for iPod”, “Made for iPhone” and “Made for iPad”
mean that an electronic accessory has been designed to
connect specifically to iPod, iPhone or iPad, respectively,
and has been certified by the developer to meet Apple
performance standards. Apple is not responsible for the
operation of this device or its compliance with safety and
regulatory standards. Please note that the use of this
accessory with iPod, iPhone, or iPad may affect wireless
performance.
Apple, AirPlay, the AirPlay logo, iPad, iPhone, iPod, iPod
shuffle, iPod nano, iPod classic, iPod touch, iTunes and
Mac are trademarks of Apple, Inc., registered in the U.S.
and other countries.

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3. BASIC ITEMSFOR SERVICE
3.1 CHECK POINTSAFTER SERVICING
Item to be checked regarding audio
Distortion
Noise
Volume too low
Volume too high
Volume fluctuating
Sound interrupted
No. ProceduresCheck points
1
2
3
4
Confirm afirmware version at test mode. Should be the latest firmware version.
If not, update the version.
Confirm whether the customer complain has been solved.
If the indicated complain is caused by aspecific file format,
replay amusic file for test of the same format as target file.
The customer complain must not be reappeared.
No abnormalities should exist in screen displayed contents,
audio and actions.
Confirm replay of amusic file for test with the same format as
corresponding file format at the front USB terminal. (Confirm
music files with all file formats should be replayed.)
No abnormalities should exist in actions such as audio, screen
display, etc.
Check the external package No scratches or dirt on its appearance after receiving it for
service.
To keep the product quality after servicing, confirm recommended check points shown below.
See the table below for the items to be checked regarding audio.
A music file for test with corresponding file format should be used after downloading from the service dedicated Web Site onto
an USB memory, etc.

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3.2 PCB LOCATIONS
LED ASSY
POWER LED ASSY
DAC ASSY
C
POWER SW ASSY
STBY ASSY
J
CNT A ASSY
K
D-MAIN ASSY
B
E
USB ASSY
I
GUIDE 2 ASSY
N
CNT B ASSY
L
H
IR ASSY
G
F
GUIDE 1 ASSY
M
GUIDE 4 ASSY
P
LCD/KEY ASSY
D
GUIDE 3 ASSY
O
JACK ASSY
A

12 N-50
12 3 4
A
B
C
D
E
F
12 3 4
3.3JIGSLIST
NOTES: - Parts marked by “NSP” are generally unavailable because they are not in our Master Spare Parts List.
- The > mark found on some component parts indicates the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
Mark No. Description Part No.
LIST OF ASSEMBLIES
NSP 1..TTL ASSY D-MAIN(N-50) 7025HU1103040-IL
2..D-MAIN ASSY 7028071361010-IL
NSP 1..TTL ASSY D-MAIN(N-50-K/-S) 7025HU1103030-IL
2..D-MAIN ASSY 7028071361010-IL
NSP 1.. TTL ASSY D-MAIN(N-30) 7025HU1102030-IL
2..D-MAIN ASSY 7028071361020-IL
NSP 1..TTL ASSY D-MAIN(N-30-K/-S) 7025HU1102040-IL
2..D-MAIN ASSY 7028071361020-IL
NSP 1..TTL ASSY USB(N-50) 7025HU1103041-IL
2..USB ASSY 7028071371010-IL
NSP 1..TTL ASSY USB(N-50-K/-S) 7025HU1103031-IL
2..USB ASSY 7028071371010-IL
NSP 1..TTL ASSY USB(N-30) 7025HU1102031-IL
2..USB ASSY 7028071371010-IL
NSP 1..TTL ASSY USB(N-30-K/-S) 7025HU1102041-IL
2..USB ASSY 7028071371010-IL
NSP 1..TTL ASSY DAC(N-50) 7025HU1103042-IL
2..GUIDE 2 ASSY 702807138A010-IL
2..GUIDE 4 ASSY 702807138B010-IL
2..DAC ASSY 7028071381010-IL
>2..STBY ASSY 7028071382010-IL
2..LED ASSY 7028071383010-IL
2..POWER LED ASSY 7028071384010-IL
2..POWER SW ASSY 7028071385010-IL
2..IR ASSY 7028071386010-IL
2..GUIDE 3 ASSY 7028071387010-IL
2..CNT B ASSY 7028071388010-IL
2..GUIDE 1 ASSY 7028071389010-IL
NSP 1..TTL ASSY DAC(N-50-K/-S) 7025HU1103032-IL
2..GUIDE 2 ASSY 702807138A010-IL
2..GUIDE 4 ASSY 702807138B010-IL
2..DAC ASSY 7028071381010-IL
>2..STBY ASSY 7028071382020-IL
2..LED ASSY 7028071383010-IL
2..POWER LED ASSY 7028071384010-IL
2..POWER SW ASSY 7028071385010-IL
2..IR ASSY 7028071386010-IL
2..GUIDE 3 ASSY 7028071387010-IL
2..CNT B ASSY 7028071388010-IL
2..GUIDE 1 ASSY 7028071389010-IL
NSP 1..TTL ASSY DAC(N-30) 7025HU1102032-IL
2..GUIDE 4 ASSY 702807138B010-IL
2..DAC ASSY 7028071381020-IL
>2..STBY ASSY 7028071382030-IL
2..LED ASSY 7028071383020-IL
2..POWER LED ASSY 7028071384010-IL
2..POWER SW ASSY 7028071385010-IL
2..IR ASSY 7028071386010-IL
2..GUIDE 3 ASSY 7028071387010-IL
2..CNT B ASSY 7028071388010-IL
2..GUIDE 1 ASSY 7028071389010-IL
NSP 1..TTL ASSY DAC(N-30-K/-S) 7025HU1102042-IL
2..GUIDE 4 ASSY 702807138B010-IL
2..DAC ASSY 7028071381020-IL
> 2..STBY ASSY 7028071382040-IL
2..LED ASSY 7028071383020-IL
2..POWER LED ASSY 7028071384010-IL
2..POWER SW ASSY 7028071385010-IL
2..IR ASSY 7028071386010-IL
2..GUIDE 3 ASSY 7028071387010-IL
2..CNT B ASSY 7028071388010-IL
2..GUIDE 1 ASSY 7028071389010-IL
NSP 1..TTL ASSY JACK(N-50) 7025HU1103043-IL
2..JACK ASSY 7028071391010-IL
2..LCD/KEY ASSY 7028071392010-IL
2..CNT A ASSY 7028071393010-IL
NSP 1..TTL ASSY JACK(N-50-K/-S) 7025HU1103033-IL
2..JACK ASSY 7028071391010-IL
2..LCD/KEY ASSY 7028071392010-IL
2..CNT A ASSY 7028071393010-IL
NSP 1..TTL ASSY JACK(N-30) 7025HU1102033-IL
2..JACK ASSY 7028071391020-IL
2..LCD/KEY ASSY 7028071392010-IL
2..CNT A ASSY 7028071393010-IL
NSP 1..TTL ASSY JACK(N-30-K/-S) 7025HU1102043-IL
2..JACK ASSY 7028071391020-IL
2..LCD/KEY ASSY 7028071392010-IL
2..CNT A ASSY 7028071393010-IL
Mark No. Description Part No.
Service Remote Control Unit
Name Jig No. Remarks
Adjustment, Diagnosis
GGF1381

13
N-50
56 7 8
56 7 8
A
B
C
D
E
F

14 N-50
12 3 4
A
B
C
D
E
F
12 3 4
4. BLOCK DIAGRAM
4.1 OVERALL CONNECTION DIAGRAM (1/2)
CNT A AS
(7028071
K
N-50, N-50-K/-Sonly
STBY ASSY
(N-50 :7028071382010-IL)
(N-50-K/-S :7028071382020-IL)
(N-30 :7028071382030-IL)
(N-30-K/-S :7028071382040-IL)
J
JACK ASSY
(N-50, N-50-K/-S:702
(N-30, N-30-K/-S:702
A
!

15
N-50
56 7 8
56 7 8
A
B
C
D
E
F
CNT A ASSY
(7028071393010-IL)
Y
0-K/-S:7028071391010-IL)
0-K/-S:7028071391020-IL)
D-MAIN ASSY (1/2)
(N-50, N-50-K/-S:7028071361010-IL)
(N-30, N-30-K/-S:7028071361020-IL)
DAC ASSY
(N-50, N-50-K/-S:7028071381010-IL)
(N-30, N-30-K/-S:7028071381020-IL)
C
B
B1/5 - B5/5
( )
Therefore, when replacing, be sure to use parts of identical designation.
When ordering service parts, be sure to refer to "EXPLODEDVIEWSand PARTSLIST" or "PCB PARTSLIST".
The > mark found on some component parts indicates the importance of the safety factor of the part.

16 N-50
12 3 4
A
B
C
D
E
F
12 3 4
4.2 OVERALL CONNECTION DIAGRAM (2/2)
POWER LED ASSY
(7028071384010-IL)
H
POWER SW ASSY
(7028071385010-IL)
F
CNT B ASSY
(7028071388010-IL)
L
USB
(702
I
Shield Case
IR ASSY
(70280713
G
GUIDE 1 ASSY
(7028071389010-IL)
M
GUIDE 2 ASSY
(N-50, N-50-K/-S:702807138A010-IL)
N
GUIDE 3 ASSY
(7028071387010-IL)
O
GUIDE 4 ASSY
(702807138B010-IL)
P
Direct connection(Chass
D-MAIN ASSY (2/2)
(N-50, N-50-K/-S:7028071361010-IL)
(N-30, N-30-K/-S:7028071361020-IL)
LED ASSY
(N-50, N-50-K/-S:7028071383010-IL)
(N-30, N-30-K/-S:7028071383020-IL)
E
B
B1/5 - B5/5
( )

17
N-50
56 7 8
56 7 8
A
B
C
D
E
F
USB ASSY
(7028071371010-IL)
I
IR ASSY
(7028071386010-IL)
LCD/KEY ASSY (7028071392010-IL)
D
nnection(ChassisShield Case)
10-IL)
20-IL)

18 N-50
12 3 4
A
B
C
D
E
F
12 3 4
4.3BLOCK DIAGRAM
N-50, N-50-K/-SONLY
N-50,
N-50-K/-SONLY
SPI
JACK ASSY
A
D-MAIN ASSY
B
F
POWER SW
ASSY
POWER LED
ASSY
H
IR ASSY
G
LCD/KEY ASSY
D
LED ASSY
EUSB ASSY
I
LCD CONTROL

19
N-50
56 7 8
56 7 8
A
B
C
D
E
F
N-30,
N-30-K/-S
ONLY
N-30, N-30-K/-S
ONLY
N-50, N-50-K/-SONLY
N-50, N-50-K/-SONLY
ASSY
STBY ASSY
J
DAC ASSY
C

20 N-50
12 3 4
A
B
C
D
E
F
12 3 4
5. DIAGNOSIS
5.1 TROUBLESHOOTING
No sound comesout.
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
Neither optical
or coaxial digital sound
comes out.
IC104 (4, 10 pin)
Is the voltage
about 3.3V?
Check the pattern
between
IC104 - IC2501.
Check the pattern
between
IC104 – L2513.
No light comes out.
Check the pattern
between
IC104 - IC101.
Check the pattern
between
IC104 - JACK102.
No sound comes
out in any function.
No sound
comes out for Music Server,
Internet Radio, iPod
or USB.
Sound comes
out for Music Server and
Internet Radio
, but no sound
comes out for iPod
and USB.
Sound comes
out for iPod and USB, but no
sound comes out for
Music Server and
Internet Radio.
No sound comes out
for iPod .
Check the pattern
around IC1506.
Is the signal detected
in the land of R1649(NM)?
Check the patterns
between
JA1502 - IC1506
and around IC1506.
Check the path
between
IC1504 - IC2501
(signal name: NWSPDIF).
Failure in
IC1504 Check the path
between
IC1504 - USB ASSY.
A
B
Analog sound
doesn’t come out.
Digital sound comes out.