Pioneer BDP-LX55 User manual

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
2011
2011 Printed in Japan
BDP-LX55
RRV4285P
Blu-ray 3DTM PLAYER
BDP-LX55
BDP-53FD
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model Type Power
Requirement
DVD
Region No.
BD
Region No. Serial No. Remarks
BDP-LX55 YXCN5 AC 100 V to 240 V 2 B &&&&######YY YY:Europe
BDP-LX55 VXCN5 AC 100 V to 240 V 2 B &&&&######GB GB:U.K
BDP-LX55 FWLXCN AC 100 V to 240 V 3 A &&&&######TA TA:Taiwan
BDP-53FD UCXCN AC 120 V 1 A &&&&######UC UC:NORTH AMERICA
K-FZV DEC.
PROVISIONAL

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SAFETY INFORMATION
WARNING
This product may contain achemical known to the State of Californiato cause cancer, or birth defects or other reproductive
harm.
Health & Safety Code Section 25249.6 - Proposition 65
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 tryingto do so and refer the repair to a qualified service technician.
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 a120 V
AC 60 Hz outlet and turn the AC power switch on. Any
current measured must not exceed 0.5 mA.
ANY MEASUREMENTSNOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL
SHOCK HAZARD AND MUST BE CORRECTED BEFORE
RETURNING THE APPLIANCE TO THE 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)

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LABEL CHECK
WARNING !
THE LASER COMPONENT IS CAPABLE OF EMITTING RADIATION EXCEEDING THE LIMIT
FOR CLASS 1.
A SPECIALLY INSTRUCTED PERSON SHOULD DO SERVICING OPERATION OF THE
APPARATUS.
Laser Pickup specifications and Laser characteristics
For BD Wave length : 405 nm
Operating output :
SL : 0.32
DL : 0.64 mW CW, Class 1
Maximum output : Class 1M (under fault condition)
For DVD Wave length : 660 nm
Operating output : 0.40 mW CW, Class 1
Maximum output : Class 1 (under fault condition)
For CD Wave length : 785 nm
Operating output : 0.41 mW CW, Class 1
Maximum output : Class 1M (under fault condition)
The following caution appears on your unit.
Location: inside of the unit
(Printed on the Back Plate)

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CONTENTS
SAFETY INFORMATION ..........................................................................................................................................................2
1. SERVICE PRECAUTIONS....................................................................................................................................................5
1.1 NOTESON SOLDERING ...............................................................................................................................................5
2. SPECIFICATIONS.................................................................................................................................................................6
2.1 ACCESSORIES..............................................................................................................................................................6
2.2 SPECIFICATIONS...........................................................................................................................................................6
2.3 TYPESOF DISCS/FILESTHAT CAN BE PLAYED ........................................................................................................7
3. BASIC ITEMSFOR SERVICE.............................................................................................................................................12
3.1 CHECK POINTSAFTER SERVICING..........................................................................................................................12
3.2 PCB LOCATIONS.........................................................................................................................................................13
3.3 JIGSLIST......................................................................................................................................................................13
4. BLOCK DIAGRAM...............................................................................................................................................................14
4.1 OVERALL CONNECTION DIAGRAM ...........................................................................................................................14
4.2 BLOCK DIAGRAM FOR POWER BLOCK ....................................................................................................................16
5. DIAGNOSIS.........................................................................................................................................................................18
5.1 DIAGNOSISFLOWCHART...........................................................................................................................................18
6. SERVICE MODE .................................................................................................................................................................25
6.1 HOW TO ENTER TO SERVICE MODE ........................................................................................................................25
6.2 DESCRIPTION OF EACH ITEM ...................................................................................................................................25
6.3 DETAILED DESCRIPTION OF ITEMSUSED IN SERVICE .........................................................................................26
7. DISASSEMBLY....................................................................................................................................................................31
8. EACH SETTING AND ADJUSTMENT ................................................................................................................................39
8.1 NECESSARY ADJUSTMENT POINTS.........................................................................................................................39
8.2 FIRMWARE UPDATE....................................................................................................................................................39
9. EXPLODED VIEWSAND PARTSLIST...............................................................................................................................40
9.1 PACKING SECTION......................................................................................................................................................40
9.2 EXTERIOR SECTION...................................................................................................................................................42
10. SCHEMATIC DIAGRAM ....................................................................................................................................................44
10.1 MAIN BOARD ASSY (1/15) : POWER SOURCE (Sheet No.2) ..................................................................................44
10.2 MAIN BOARD ASSY (2/15) : DDR-1 (Sheet No.3) .....................................................................................................46
10.3 MAIN BOARD ASSY (3/15) : DDR-2 (Sheet No.4) .....................................................................................................48
10.4 MAIN BOARD ASSY (4/15) : HDMI (Sheet No.5) .......................................................................................................50
10.5 MAIN BOARD ASSY (5/15) : FLASH (Sheet No.6).....................................................................................................52
10.6 MAIN BOARD ASSY (6/15) : VFD/IR (Sheet No.7) ....................................................................................................54
10.7 MAIN BOARD ASSY (7/15) : AUDIO DAC (Sheet No.8).............................................................................................56
10.8 MAIN BOARD ASSY (8/15) : VIDEO OUTPUT (Sheet No.9) .....................................................................................58
10.9 MAIN BOARD ASSY (9/15) : FE (Sheet No.10)..........................................................................................................60
10.10 MAIN BOARD ASSY (10/15) : MOTOR DRIVER+CPU (Sheet No.11).....................................................................62
10.11 MAIN BOARD ASSY(11/15) : DDR2 (Sheet No.12) ................................................................................................64
10.12 MAIN BOARD ASSY (12/15) : POWER-DADT (Sheet No.13)..................................................................................66
10.13 MAIN BOARD ASSY (13/15) : INTERFACE (Sheet No.14) ......................................................................................68
10.14 MAIN BOARD ASSY (14/15) : SIL9136-POWER (Sheet No.15) ..............................................................................70
10.15 MAIN BOARD ASSY (15/15) : MCU/SWITCH (Sheet No.16)...................................................................................72
10.16 FRONT BOARD ASSY..............................................................................................................................................74
10.17 SWITCH BOARD ASSY............................................................................................................................................76
10.18 RSBOARD ASSY .....................................................................................................................................................77
10.19 POWER BOARD ASSY ............................................................................................................................................78
11. PCB CONNECTION DIAGRAM ........................................................................................................................................80
11.1 MAIN BOARD ASSY ...................................................................................................................................................80
11.2 FRONT BOARD ASSY................................................................................................................................................84
11.3 SWITCH BOARD, RSBOARD and POWER BOARD ASSYS....................................................................................86
12. PCB PARTSLIST ..............................................................................................................................................................88

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1. SERVICE PRECAUTIONS
1.1 NOTES ON 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 (BDP-LX55/YXCN5,BDP-LX55/VXCN5,BDP-LX55/FWLXCN :06-RC2531-A000)
(BDP-53FD/UCXCN :06-RC2521-A000)
AAA/R03dry cell battery x 2
Video/Audio cable (41-UH1500-0KK8A-TL)
AC Power cord (BDP-LX55/YXCN5 :ADG7062)
(BDP-LX55/VXCN5,BDP-LX55/FWLXCN :ADG7104)
(BDP-53FD/UCXCN :ADG7061)
Warranty card
Operating instructions (BDP-LX55/YXCN5 :72-DPLX55-EN0B1, 72-DPLX55-YX0B1)
(BDP-LX55/VXCN5 :72-DPLX55-EN0B1)
(BDP-LX55/FWLXCN :72-DPLX55-EN0B1, 72-DPLX55-TW0B1)
(BDP-53FD/UCXCN :72-BD53FD-USAB1)
Note
• The specifications and design of this product are subject to change without notice.
Model BDP-LX55
BDP-53FD
Type Blu-ray 3D
TM PLAYER
Rated voltage
AC 100 V to 240 V
Rated frequency 50 Hz/60 Hz
Power consumption 25 W
Power consumption (standby) 0.3W
Weight 3.5 kg
External dimensions (including projecting parts)
Tolerable operating temperature +5 °C to +35 °C
Tolerable operating humidity 5 % to 85 % (no condensation)
Output terminals
HDMI 2 set, 19-pin: 5 V, 250 mA
Video outputs 1 set, RCA jack: 1.0 Vp-p (75 )Ω
Audio outputs 1 set, RCA jacks
Audio output level 200 mVrms (1 kHz, –20 dB)
Frequency response 4 Hz to 88 kHz (192 kHz sampling)
Digital audio outputs Optical 1 set, Optical digital jack
LAN 1 set, Ethernet jack (10BASE-T/100BASE-TX)
USB 2 set, Type A
2-channel (left/right)
435 mm (W) x 93mm (H) x 252 mm (D)

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2.3 TYPES OF DISCS/FILES THAT CAN BE PLAYED
Playable discs
Discs with the logo marks below indicated on the disc label, package or jacket can be played.
Caution
• Only the discs that have been finalized can be played.
Disc type Logo
Application format
BDMV BDAV DVD-
Video
DVD-
Audio DVD VR CD-DA
DTS-CD
DATA-
DISC1
1. Discs on which video, image or audio files are recorded. This player does not support multisession discs or multiborder recording.
BD2
2. Including dual-layered discs.
BD-ROM 
BD-R 
BD-RE 
DVD
DVD-ROM 
DVD-R 2,3,4
3.Finalize them before playing them on this player.
4. DVD-R for Authoring discs (3.95 and 4.7 GB) cannot be played.
5
5. Including the AVCHD format.
6
6. Including the AVCREC format.

DVD-RW 3,7
7. Version 1.0 DVD-RW discs cannot be played.
56
DVD+R2,3
DVD+RW3
CD
CD-DA
(Audio CD)8
8.Including Video CDs.

CD-R 3
CD-RW 3
CD-ROM 

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• “Blu-ray Disc”, “Blu-ray” and “Blu-ray Disc” logo are
trademarks of Blu-ray Disc Association.
• is a trademark of DVD Format/Logo Licensing
Corporation.
• Corporation and product names mentioned herein are
trademarks or registered trademarks of the respective
corporations.
Discsthat cannot be played
• HD DVDs
• DVD-RAM discs
It is possible that some discs other than the ones listed
above may not be playable either.
Note
• Some discs cannot be played, even if one of the logo
marks on the previous page is indicated.
• To play 8cm discs, set the disc in the 8cm disc
depression in the center of the disc tray. No adapter
is necessary. 8cm BD-ROMs cannot be played.
About audio formats
The following audio formats are supported on this player:
•DolbyTrueHD
• Dolby Digital Plus
• Dolby Digital
•DTS-HDMaster Audio
• DTS-HD High Resolution Audio
• DTS Digital Surround
•MPEGaudio (AAC)
•Linear PCM
To enjoy the surround sound of Dolby TrueHD, Dolby
Digital Plus, DTS-HD Master Audio and DTS-HD High
Resolution Audio, it is recommended to connect the
player to an AV receiver or amplifier compatible with
these audio formats using an HDMI cable. After loading
aBD containing sound in one of these audio formats,
select the audio format on the menuscreen.
Manufactured under license from Dolby Laboratories.
Dolby and the double-D symbol are trademarks of Dolby
Laboratories.
Manufactured under license under U.S. Patent Nos:
5,956,674; 5,974,380; 6,226,616; 6,487,535; 7,392,195;
7,272,567; 7,333,929; 7,212,872 & other U.S. and worldwide
patents issued & pending. DTS-HD, the Symbol, & DTS-HD
and the Symbol together are registered trademarks & DTS-
HD Master Audio | Essential is a trademark of DTS, Inc.
Product includes software. © DTS, Inc. All Rights Reserved.
PlayingBDs
• BDs (BDMV) compatible with the formats below can
be played.
–Blu-ray Disc Read-Only (ROM) Format Version 2
–Blu-ray Disc Recordable (R) Format Version 2
–Blu-ray Disc Rewritable (RE) Format Version 3
This player supports BD-ROM Profile 5.
“Blu-ray 3D” and “Blu-ray 3D” logo are trademarks of
Blu-ray Disc Association.
BONUSVIEW functions such as playback of
secondary video (Picture-in-Picture) and secondary
audio can be used. The dataused with the
BONUSVIEW functions (the secondary video
(Picture-in-Picture) and secondary audio data) may
be stored in the storage.For details on secondary
video and secondary audio playback, refer to the
disc’s instructions.
“BONUSVIEW” is trademark of Blu-ray Disc
Association.
BD-LIVE functions such as downloading movie
trailers or additional audio and subtitle languages
and playing on-line games can be enjoyed over the
Internet. The datadownloaded with the BD-LIVE
function (trailers, etc.) is stored in the storage. Refer
to the disc’s instructions for details about BD-LIVE
functions.
“BD-LIVE” logo is trademark of Blu-ray Disc
Association.

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With BD-ROMs, it is possible to use BD-J (Java)
applications to create highly interactive titles, for
example including games.
Oracle and Java are registered trademarks of Oracle
and/or its affiliates. Other names may be trademarks of
their respective owners.
• BDs (BDAV) compatible with the formats below can
be played.
–Blu-ray Disc Recordable (R) Format Version 1
–Blu-ray Disc Rewritable (RE) Format Version 2
PlayingDVDs
This label indicates playback compatibility with DVD-RW
discs recorded in VR format (Video Recording format).
However, for discs recorded with a record-only-once
encrypted program, playback can only be achieved using a
CPRM compatible device.
The AVCHD is ahigh definition (HD) digital video camera
recorder format recording high-definition onto certain
mediaby using highly efficient codec technologies.
“AVCHD” and the “AVCHD” logo are trademarks of
Panasonic Corporation and Sony Corporation.
About region numbers
Blu-ray Disc Player and BD-ROM or DVD-Video discs are
assigned region numbers according to the region in
which they are sold.
This player’s region numbers are:
•BD-ROM:
–Europe, Australia and New Zealand models : B
–Russia models : C
–Others : A
•DVD-Video:
–Europe models : 2
–Australia and New Zealand models : 4
–Russia models : 5
–Others: 3
Discs not including these numbers cannot be played.
Discs playable on this player are as shown below.
•BDs:
–Europe, Australia and New Zealand models : B
(including B) and ALL
–Russia models: C (including C) and ALL
–Others: A (including A) and ALL
•DVDs:
–U.K. models : 2 (including 2) and ALL
–Australia and New Zealand models : 4 (including 4)
and ALL
–Russia models : 5 (including 5) and ALL
–Others : 3(including 3) and ALL
PlayingCDs
Regarding copy protected CDs: This player is designed to
conform to the specifications of the Audio CD format.
This player does not support the playback or function of
discs that do not conform to these specifications.
DualDisc playback
A DualDisc is atwo-sided disc, one side of which
contains DVD content — video, audio, etc. — while the
other side contains non-DVD content such as digital
audio material.
The DVD side of aDualDisc can be played on this player.
The non-DVD, audio side of the disc is not compatible
with this player.
It is possible that when loading or ejecting aDualDisc,
the opposite side to that being played will be scratched.
Scratched discs may not be playable.
For more detailed information on the DualDisc
specification, please refer to the disc manufacturer or
disc retailer.
(BDP-LX55/YXCN5,BDP-LX55/VXCN5,
BDP-LX55/FWLXCN)
(BDP-53FD/UCXCN)
This player’s region numbers are:
•BD-ROM:A
•DVD-Video:1
Discs not including these numbers cannot be played.
Discs playable on this player are as shown below.
• BDs: A (including A) and ALL
• DVDs: 1 (including 1) and ALL

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Playingdiscscreated on computers
or BD/DVD recorders
• It may not be possible to play discs recorded using a
computer due to the application settings or
computer’s environment settings. Record discs in a
format playable on this player. For details, contact the
dealer.
• It may not be possible to play discs recorded using a
computer or aBD/DVD recorder, if burn quality is not
good due to characteristics of the disc, scratches, dirt
on the disc, dirt on the recorder’s lens, etc.
About video, audio, and image files
and folders
Audio and image files can be played on this player when
the folders on the disc or USB memory device are created
as described below.
Example of folder structure:
* The number of folders and files within asingle folder
(including the root directory) is limited to amaximum of
256. Also, keep the number of folder layers to amaximum
of 5.
Note
• The file and folder names displayed on this player may
differ from those displayed on acomputer.
Playable files
Video, image and audio files recorded on DVDs and CDs
can be played.
Caution
• In DVD, only the one recorded by the ISO 9660 file
system can be played.
• Some files may not be playable.
• For some files, it may not be possible to use certain
functions during playback.
• It may not be possible to play some files, even if they
have the extension of afile playable on this player.
• Files protected by DRM (Digital Rights Management)
cannot be played (not including DivX VOD files).
Supported video file formats
• DivX PlusHD
DivX Certified®to play DivX®and DivX PlusTM
HD
(H.264/MKV) video up to 1080p HD including
premium content.
ABOUT DIVX VIDEO: DivX®is adigital video format
created by DivX, Inc. This is an official DivX Certified®
device that plays DivX video. Visit divx.com for more
information and software tools to convert your files
into DivX video.
ABOUT DIVX VIDEO-ON-DEMAND: This DivX
Certified®
device must be registered in order to play
purchased DivX Video-on-Demand (VOD) movies. To
obtain your registration code, locate the DivX VOD
section in your device setup menu. Go to
vod.divx.com for more information on how to
complete your registration.
DivX®
, DivX Certified ®, DivX Plus
TM
HD and associated
logos are trademarks of DivX, Inc. and are used under
license.
Note
• This DivX®
Certified device must be registered in
order to play DivX Video-on-Demand (VOD) content.
First generate the DivX VOD registration code for your
device and submit it during the registration process.
Important: DivX VOD content is protected by aDivX
DRM (Digital Rights Management) system that
restricts playback to registered DivX Certified devices.
If youtry to play DivX VOD content not authorized for
your device, the message Authorization Error will be
displayed and your content will not be played. Learn
more at www.divx.com/vod.
– This player’s DivX VOD registration code can be
checked at HOME MENU Initial Setup 
PlaybackDivX(R) VOD DRM Registration
Code.
–Thenumber of views is restricted for some DivX
VOD files. When such files are played on this
player, the remaining number of views is displayed.
Files for which the remaining number of views has
reached 0 cannot be played ( ThisDivX rental has
expired is displayed). Files for which the number of
views is not restricted can be played as many times
as youlike (the remaining number of views is not
displayed).
*
*
*
*
Root
01 Folder
XX Folder
Folder
001.jpg/001.mp3
xxx.jpg/xxx.mp3
001.jpg/001.mp3
xxx.jpg/xxx.mp3
001.jpg/001.mp3
xxx.jpg/xxx.mp3
001.jpg/001.mp3
xxx.jpg/xxx.mp3

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•MKV
MKV files can be played.
–MKVisafile format allowing multiple audio and
video files to be held in asingle file.
– The files that can be played are as follows:
Resolution: Up to 1 280 x 720
Extension: “.mkv” or “.MKV”
• WindowsMedia™ Video (WMV)
Windows Media™ Video (WMV) files can be played.
– The files that can be played are as follows:
Resolution: Up to 1 280 x 720
Extension: “wmv” or “WMV”
– Files encoded using the Windows Media™ Encoder
9 series are supported.
– Windows Mediais either aregistered 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 alicense from Microsoft
Licensing, Inc.
Supported image file formats
•JPEG
•Progressive JPEG
File format: JFIF Ver. 1.02/Exif Ver. 2.2
Resolution: Up to 4 096 x 4 096 pixels
Supported audio file formats
• Windows Media™ Audio 9 (WMA9)
Bit rate: Up to 192 kbps
Sampling frequencies: 22.05 kHz, 32 kHz, 44.1 kHz
and 48kHz
•MPEG-1 Audio Layer 3(MP3)
Bit rate: Up to 320 kbps
Sampling frequencies: 8kHz, 11.025 kHz, 12 kHz,
16 kHz, 22.05 kHz, 24 kHz, 32 kHz, 44.1 kHz and 48kHz
•Free Lossless Audio Codec (FLAC)
Sampling frequencies: 96 kHz to 192 kHz
Quantization bitrate: 16 bit, 24 bit
Channel: 2ch
Playable file extensions
•Video files
.divx, .mkv, .wmv and .avi
•Image files
.jpg and .jpeg
•Audio files
.wmaand .mp3
.flac

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3. BASIC ITEMS FOR SERVICE
3.1 CHECK POINTS AFTER SERVICING
Item to be checked regardingvideo Item to be checked regardingaudio
Block noise Distortion
Horizontal noise Noise
Dot noise Volume too low
Disturbed image (video jumpiness) Volume too high
Too dark Volume fluctuating
Too bright Sound interrupted
Color disappearance
Mottled color
No. ProceduresCheck points
1
2
3
4
5
6
Confirm the firmware version on Test Mode. The version of the firmware must be latest.
Update firmware to the latest one, if it is not the latest.
Confirm whether the customer complain has been solved.
If the customer complain occurs with the specific disc, use it for
the operation check.
The customer complain must not be reappeared.
Video, audio and operations must be normal.
Play back aCD.
(track search)
Audio and operations must be normal.
Play back aDVD.
(Menuoperation, Title/chapter search)
Video, audio and operations must be normal.
Play back aBD.
(Menuoperation, Title/chapter search)
Video, audio and operations must be normal.
Check the appearance of the product. 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 video and audio.
Cleaning
Be sure to clean the following positions by using the prescribed cleaning tools shown below as occasion demands.
Refer to “7. DISASSEMBLY”.
NamePosition to be cleaned Part No. Remarks
Cleaning liquidPickup leneses GEM1004
Cleaning paper GED-008

13
BDP-LX55
56 7 8
56 7 8
A
B
C
D
E
F
3.2 PCB LOCATIONS
3.3 JIGS LIST
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.
POWER BOARD ASSY
FRONT BOARD ASSY SWITCH BOARD ASSY
MAIN BOARD ASSY
A
RS BOARD ASSY
D E
B
Loader ASSY
C
Mark No. Description Part No.
LIST OF ASSEMBLIES
1..MAIN BOARD ASSY 08-BDLX55-MA0/Y
(BDP-LX55/YXCN5,BDP-LX55/VXCN5)
1..MAIN BOARD ASSY (BDP-LX55/FWLXCN) 08-BDLX55-MA0/F
1..MAIN BOARD ASSY (BDP-53FD/UCXCN) 08-BDLX55-MA0/U
1..FRONT BOARD ASSY 08-BDLX55-FV0
1..SWITCH BOARD ASSY 08-BDLX55-SW0-TL
1..RS BOARD ASSY 08-BDP440-RS0-TL
>1..POWER BOARD ASSY 08-BDLX55-PW2
(BDP-LX55/YXCN5,BDP-LX55/VXCN5)
>1..POWER BOARD ASSY(BDP-LX55/FWLXCN) 08-BDLX55-PW0
>1..POWER BOARD ASSY(BDP-53FD/UCXCN) 08-BDLX55-PW1
1..Loader ASSY 08-BL2000-LD4-TL
Mark No. Description Part No.
DVD Test Disc (DVD-Video)
BD-ROM Test Disc
Name JigNo. Remarks
Check of DVD-Video
Check of BD-ROM
GGV1025
GGV1350
BD-ROM Test Disc (One layer type) For Adjustment
GGV1368
Emergency Disc Ejection Rod Emergency disc ejection
GGF1529
Emergency Disc Ejection Rod
(GGF1529)

14 BDP-LX55
12 3 4
A
B
C
D
E
F
12 3 4
4. BLOCK DIAGRAM
4.1 OVERALL CONNECTION DIAGRAM
CVBSL
R
MT8555
TPIC 1391
AUDIO DAC
AK4480
MOTER
DRIVER
XP1
3
1
optical
1
XS
3
1
XS136
XP7
256
N F
MOTER
DRIVER
TPIC 1405B
XP10
18
1
4
XP5
XP6(USB_1)
14
P503
CON3(RS232)
12
Ethernet
VIDEO
LPF&DRIVE
P400 P3
USB2
AUDIO
AMP&LPF
Audio
PCM/DSD
F25 G27
74L157
GPIO7
POWER_K
+12V_D
GND
POWER_K
OPEN_K
-24V_D
TRAYIN#
GND
LOAD+
LOAD-
COMMON
W
V
U
B+
B-
A-
A+
LED
CSN CCLK CDTI
CVBS CVBS_OUT
F25(232 TX) G27(232 RX)
AOMCLK AOSDATA0/DSDL1 AOBCK/DDCLK
AOSDATA3/DSDR1
AOLRCK
S
XS1
RS BOARD ASSY
(08-BDP440-RS0-TL)
D
A
MAIN BOARD ASSY
(BDP-LX55/YXCN5,BDP-LX55/VXCN5
: 08-BDLX55-MA0/Y)
(BDP-LX55/FWLXCN
: 08-BDLX55-MA0/F)
(BDP-53FD/UCXCN
: 08-BDLX55-MA0/U)
LOADER ASSY (08-BL2000-LD4-TL)
SWITCH BOARD ASSY
(08-BDLX55-SW0-TL)
C
FRONT BOARD
(08-BDLX55-FV
B
A1/15 - A15/15

15
BDP-LX55
56 7 8
56 7 8
A
B
C
D
E
F
CVBS
CN503
1
7
8555
optical
POWER AC IN
121
XS135
256M
N FLASH
1Gbit DDR3x 4
232)
DC-DC
DC-DC
5V
3.3V
1.5V
1.15V
LDO
12V
-24V
112
XP1
1
7
VIDEO
LPF&DRIVE
J1
PQLS
XS221
USB
HDMI 2HDMI 1 J3
HDMI TX
SIL9136
16_BIT 444( Y Cb Cr
DE2750
QDEO
I2C
Audio PCM I2S/DSD/SPDIF
LDO
LDO
1.8V
1.0V
512Mbit
DDR2
CEC SWITCH
74L157
2D/3D
20_BIT 444(Y Cb Cr)
PCM/DSD
SWITCH
UPD78F1156A
uCOM(MCU)
I2C
POWER_K
12V
GND
5V
GND
5V
+12V_D VCC
GND
VDATA VCLK
OPEN_K
-24V_D
-24V
VSTB IR
PWM CONTROL
27M
CEC_1
CEC_2
CVBS
SPDIF
CVBS_OUT
CEC
CEC_CONT
GND
XP8
X’tal
POWER BOARD ASSY
(BDP-LX55/YXCN5,
BDP-LX55/VXCN5
: 08-BDLX55-PW2)
(BDP-LX55/FWLXCN
: 08-BDLX55-PW0)
(BDP-53FD/UCXCN
: 08-BDLX55-PW1)
E
NT BOARD ASSY
BDLX55-FV0)
When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS
LIST" or "PCB 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.

16 BDP-LX55
12 3 4
A
B
C
D
E
F
12 3 4
4.2 BLOCK DIAGRAM FOR POWER BLOCK
1 2 4
+5V
+12
VCC
U1
1. 1V
OPWRSB
U6
1. 5V
EN
U3
3. 3V
EN
U16 U15
1V8
1V
EN
1. 2V
G5725
U14
88DE2750
FB12 1V_KYOTO_G2
L9
G5725
U42
Sii9136
FB6 FB7
FB32
FB8
FB10 1V8_KYOTO_G2_DDR2
G9661
FB11 3V3_KYOTO_G2
U7
MT8555
DCDC
Conv.
DCDC
Conv.
L1
L3
AT1526
AT1529
DCDC
Conv.
L10
DCDC
Conv.
22
2.2u
2.2u
2.2u
R101
0
AVDD12_MEMPLL
R413
R414
AVDD12_USB_1P_1 AVDD12_USB_2P_1A
R407 AVDD12_SATA1 R427 R428
AVDD12_COM
AVDD12_REC
R651 AVDD12_HDMI_RX
AVCC12
CVCC12
R25 A1. 2V
PLL BLOCK
0
U8
H5TQ1G63BFR
DDR3
U9
H5TQ1G63BFR
DDR3
U10
H5TQ1G63BFR
DDR3
U11
H5TQ1G63BFR
DDR3
0 0
0
0
0 0
6-24V
1 2 4 6
6
9
10
R109 R110
DDR_VREF
FB5
CAVCC33 IOVCC33
U43
PD78F1164
FB24 3.3VU R340
R341
RESET CIRCUIT
RESET CIRCUIT
U2
G9091 FB3
Y4
VCXO
3. 3V_STBY
FB4
U31
TS5A3157
R52 R54 R57
AVDD33_VDAC_R AVDD33_VDAC_X AVDD33_VDAC_BG
R400 R402 R410
AVDD33_SATA AVDD33_1P_1 AVDD33_2P_2
R429 R430 R431
AVDD33_COM AVDD33_REC AVDD33_LD
R660 AVDD33_HDMI_RX FB183. 3V
FB**
1V8_FOR_Xtal
U401
NAND Flash
+12
-24V
XP1CN503
MAIN BOARD ASSY
A
POWER BOARD ASSY
E

17
BDP-LX55
56 7 8
56 7 8
A
B
C
D
E
F
U16 U15
1V8
1V
EN
OPWRSB
VCC_D
D310 EN
1. 2V
1. 2V
AVCC
MVCC_R
OPTICAL OUT TERMINAL
U13
SN74CBT3257
U32
TS5A3157
FB15
U20
TPIC1405
AFDRG4
U21
TP1391G4B
U12 (1/2)
FB27
High-
Side
SW
G5725
U14
88DE2750
FB12 1V_KYOTO_G2
L9
G5725
FB10 1V8_KYOTO_G2_DDR2
FB11 3V3_KYOTO_G2
DCDC
Conv.
L10
DCDC
Conv.
2.2u
2.2u
U24
NT5TU32M16CG-25C
DDR3
FB**
1V8_FOR_Xtal
7
XP8XS135
R611
R63NC807 VCC_HFM
37
XP7
R216 R209
VCC_PDIC
VCC_LD
28
CD_LD CIRCUIT
DVD_LD CIRCUIT
P3
USB_VCC1
USB_VCC2
FB28
1
XP6
P503
USB TERMINAL
CON3
LAN TERMINAL
6
R89
1. 2V
U12 (2/2) +12V_D
Audio Mute CIRCUIT
-24V
+12
Q15
+12V_D
10
-24V_D -24V_D
+12V_D
U4
AS1117 R11
R17 R42
100 0
AVDD VDDLR
DVDD
U19
AS1117
R121 R136
2.4k
R53
100
-12V_D -12VB
U12
NE5532
U18
G556B1-P1U
0
R60
0
U5
AK4480
R51
100
+12VB
VCC_BD_LD
(+9V)
FB16 M12V_T
BD_LD CIRCUIT
R229
0
VCC
6 7
10
R167 100
IR1
IRM
VCC
FL_AC CIRCUIT
LED CIRCUIT
Q214
+12V
+12VV
LED CIRCUIT
3
R23 R24 VDD
U1
PT6302
-20.5V
FL TUBE
ZD3
3
LED CIRCUIT
FRONT BOARD
ASSY
B
SWITCH BOARD ASSY
C
XS136XP1

18 BDP-LX55
12 3 4
A
B
C
D
E
F
12 3 4
5. DIAGNOSIS
5.1 DIAGNOSIS FLOWCHART
1) No display on VFD, and buttons do not work
No
No
Yes
Yes
No display on VFD, and
buttons do not work
Check every supply
voltage on MAIN BOARD ASSY
Check the connect line is OK
Correct connection
Replace SW1, SW2,
and SW3,
Yes
No
No
Check the FRONT BOARD
ASSY signals VCLK,VD, VSTB,
(XS135:pin3,4,5)
Check whether the circuit
connected to SW1, SW2 and
SW3are broken.
Check Q15,Q206 and Q214
is fixed on the
MAIN BOARD ASSY
Yes
is normal
Fix it

19
BDP-LX55
56 7 8
56 7 8
A
B
C
D
E
F
2) No audio output
3) Remote control does not work
Yes
Check the U5 power supply
(U5:13pin and 18pin=5.0V)
Check whether the
audio signal is right from the
U5: 10pin, 11pin, 20pin and 21pin
Check if the
R18, R46, R24 and R27 is on Add R18, R46, R24 and R27
No audio output
Replace U5
Yes
No
No
Yes No
Remote control
does not work
Replace the battery for remote
controller
Check whether
the remote controller’s battery is
exhausted or not.
Check the IR1 (HT68F50)
power supply is OK,
IR1 (PIN3) is about 3V
Check the VCC net on
Replace IR1
Yes
Yes
Yes
No
FRONT BOARD ASSY

20 BDP-LX55
12 3 4
A
B
C
D
E
F
12 3 4
4) Can’t read disc or can’t open the disc door
Yes
Check the connection 4pin cable from
the MAIN BOARD ASSY to DVD loader
Can’t read disc or can’t
open the disc door
Check 45 pin and 8pin
cables from MAIN BOARD ASSY
connected to the DVD loader are
normal
Replace DVD loader
No
Check whether the
DVD loader running is
normal
Fix the connection the 45 pin cable
and 8pin cable.
Yes
Check if U19 (pin2)
voltage is normal (about 9V)
Check R213and R215 are normal
(the voltage-drop on R215 is 1.5V) ?
Yes
Yes
Yes
No
No
No Fix or Replace R213and R215
Fix R212 or check U19 (pin3)
voltage is ok (about 12V)