LG BP50NB40 User manual

Slim Blu-ray Disc Rewriter
SERVICE MANUAL
MODEL: BP50NB40 (BUP1)
P/NO : MFL67140078April, 2015
Printed in Korea

TABLE OF CONTENTS
INTRODUCTION....................................................................................................................................................3
FEATURES............................................................................................................................................................4
SPECIFICATIONS ...........................................................................................................................................6~15
DISASSEMBLY ...................................................................................................................................................16
EXPLODED VIEW ...............................................................................................................................................17
MECHANICAL REPLACEMENT PARTS LIST...................................................................................................18
DVD & CD DATA PROCESSING..................................................................................................................19~21
1. Data Processing Flow ..................................................................................................................................19
2. Copy Protection and Regional Code Management Block ............................................................................20
3. About the DVD-ROM Regional Code...........................................................................................................21
INTERNAL STRUCTURE OF THE PICK-UP................................................................................................22~25
1. Block Diagram of the Pick-up.......................................................................................................................22
2. Pick up Pin Assignment ...............................................................................................................................23
3. Signal detection of the P/U...........................................................................................................................24
DESCRIPTION OF CIRCUIT .........................................................................................................................26~32
1. ALPC Circuit.................................................................................................................................................26
2. Focus Circuit ................................................................................................................................................27
3. Tracking & Sled Circuit.................................................................................................................................29
4. Spindle Circuit ..............................................................................................................................................30
MAJOR IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION .........................................................33~48
TROUBLESHOOTING GUIDE ......................................................................................................................49~48
GLOSSARY .........................................................................................................................................................53
BLOCK DIAGRAM ..............................................................................................................................................54
CIRCUIT DIAGRAM ......................................................................................................................................55~57
CAUTION - INVISIBLE LASER RADIATION WHEN OPEN AVOID EXPOSURE TO BEAM.

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This service manual provides a variety of
service information.
It contains the mechanical structure of the Blu-
ray Disc Rewriter Drive and the electronic circuits in
schematic form. This Blu-ray Disc Rewriter Drive
was manufactured and assembled under our strict
quality control standards and meets or exceeds
industry specifications and standards.
This Blu-ray Disc Rewriter Drive is an internal
drive unit designed for use with suitable PC for Blu-
ray disc.
It can write as much as 700 Mbytes of digital
data into CD-R/RW disc, and can read as much as
700 Mbytes of digital data stored in a CD-
ROM/R/RW disc.
It can write as much as 4.7 Gbytes of digital
data into DVD-R/RW/RAM/+R/+RW disc, and can
read as much as 4.7 Gbytes of digital data stored in
a DVD-ROM/R/RW/RAM/+R/+RW disc.
It can write as much as 8.5 Gbytes of digital
data into DVD+R DL/DVD-R DL disc, and can read
as much as 8.5 Gbytes of digital data stored in a
DVD-ROM DL/+R DL/-R DL disc.
It can write as much as 25 Gbytes of digital data
into BD-R/RE disc, and can read as much as 25
Gbytes of digital data stored in a BD-ROM/R/RE
disc.
It can write as much as 50 Gbytes of digital data
into BD-R DL/RE DL disc, and can read as much as
50 Gbytes of digital data stored in a BD-ROM DL/R
DL/RE DL disc.
This Blu-ray Disc Rewriter Drive can easily meet
the upcoming MPC level 3 specification, and its
Enhanced Intelligent Device Electronics (E-IDE) and
ATAPI interface allows Plug and play integration in
the majority of today’s PCs without the need of an
additional interface card.
INTRODUCTION
FEATURES
1.1 General
(1) USB 2.0 interface (up to 480Mbits/s)
(2) Ultra Slim Portable Blu-ray/DVD Writer
(3) CD-R/RW, DVD-R/RW/RAM, DVD+R/RW, DVD+/-R DL, BD-R(SL/DL/TL*/QL*, LTH*),
BD-RE (SL/DL/TL) read and write compatible, CD Family, DVD-ROM, BD-ROM read compatible
(4) Large buffer memory 4MB
(5) Buffer Under-run prevention function embedded
(6) Drawer Type manual loading / Electrical Release.
(7) Supports Power saving mode and Sleep mode
(8) Horizontal installable
(9) Compliance with RoHS / Pb Free production
(10) Silent Play function supported
(11) AACS Bus Encryption support
(12) BDXL media (BD multi-layer) read and write support
(13) M-Disc DVD and BD Write/Read support
*LTH: BD-R SL Low to High disc, *TL: Triple Layers, *QL: Quad Layers

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1.2 Supported disc formats
(1) Reads data in each DVD-ROM, DVD-R(Ver. 2.0 for Authoring) and BD-ROM.
(2) Reads and writes in each DVD-R(Ver. 2.1 for General), DVD-R DL(Dual Layer), DVD-RW,
DVD-RAM(Ver.2.2), DVD+R, DVD+R DL(Double Layer), DVD+RW,
BD-R (SL/DL/TL/QL, LTH) and BD-RE (SL/DL/TL).
(3) Reads data in CD-ROM, CD-ROM XA, CD-I, Video CD, CD-Extra and CD-Text
(4) Reads data in Photo CD (Single and Multi session )
(5) Reads standard CD-DA
(6) Reads and writes CD-R discs conforming to “Orange Book Part 2”
(7) Reads and writes CD-RW discs conforming to “Orange Book Part 3”
(8) Reads and writes DVD-R/RW/RAM with CPRM
(9) Supports to read “CD layer” of Super Audio CD Hybrid type
(10) Supports to read “AVCHD” format DVD disc
(11) Supports to read and write “AVCREC” format DVD disc
(12) Supports to read “DVD layer” of Hybrid Blu-ray disc
1.3 Performance (outline)
1) Write speed :
BD-R SL 2x CLV, 4x PCAV, 6x CAV
SL(M-DISC) 2x CLV, 4x PCAV
DL 2x CLV, 4x PCAV, 6x CAV
TL 2x CLV, 4x PCAV
QL 2x CLV, 4x PCAV
SL LTH 2x CLV, 4x PCAV, 6x CAV
BD-RE SL/DL/TL 2x CLV
DVD-R SL 2x CLV, 4x PCAV, 8x CAV
DL 2x CLV, 4x, 6x ZCLV
DVD+R SL 2.4x CLV, 4x PCAV, 8x CAV
SL(M-DISC) 4x PCAV
DL 2.4x CLV, 6x ZCLV
DVD+RW DVD+RW 2.4x, 3.3x CLV, 4x, 6x, 8x ZCLV
DVD-RW DVD-RW 2x, 3x CLV, 4x, 6x ZCLV
DVD-RAM DVD-RAM 2x, 3x CLV, 5x PCAV
CD-R CD-R 10x CLV, 16x PCAV, 24x CAV
CD-RW CD-RW 4x, 10x CLV, 16x ZCLV

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(2) Read speed:
BD-ROM SL/DL 6x CAV
BD-R SL/DL 6x CAV
TL/QL 6x CAV
SL LTH 6x CAV
BD-RE SL/DL 6x CAV
TL 4x PCAV
BDMV(AACS Compliant Disc) 6x CAV (SL/DL)
DVD-ROM SL/DL 8x CAV
DVD-R SL/DL 8x CAV
DVD+R SL/DL 8x CAV
DVD-RW 8x CAV
DVD+RW 8x CAV
DVD-RAM 2x, 3x CLV, 5x PCAV
DVD-Video (CSS Compliant Disc) 8x CAV (SL/DL)
CD-R/RW/ROM 24x / 24x / 24x CAV
CD-DA 24x CAV
(3) Sustained Transfer Max rate: BD 26.97 MB/s (6x)
DVD 11.08 MB/s (8x)
CD 3.6 MB/s (24x)
(4) Legacy data Transfer mode : USB High-Speed 480Mbps( 60MB/s)
USB Full -Speed 12Mbps( 1.5MB/s)
(5) Multimedia MPC-3 compliant
1.3 Performance (outline)
*Definition
Transfer Rate:
SPEED(MEDIA) Transfer rate UNIT
1x (BD) 4.495 MB/s (= 220 bytes/s)
2x (BD XL) 8.99 MB/s (= 220 bytes/s)
1x (DVD) 1.385 MB/s (= 220 bytes/s)
1x (CD) 0.15 MB/s (= 220 bytes/s)

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SPECIFICATIONS
1. Supporting Operating System & Application Software
1.1 Operating System)
1) Windows Vista: Home Basic, Home Premium, Ultimate Edition
2) Windows 7: Home Premium, Professional, Ultimate Edition
3) Windows 8 & 8.1
1.2 Application Software (Data writing & Playback)
1) Roxio Creator (Sonic Solutions)
2) Power2Go (CyberLink)
3) PowerDVD BD (CyberLink)*
4) WinDVD BD(Corel)*
* Need BE (Bus Encryption) support to play BE BDMV disc
2. General description
2.1 Applicable disc formats
BD BD-ROM (SL/DL) 25 GB / 50 GB (Ver.1.3)
BD-R (SL/DL) 25 GB / 50 GB (Ver.1.3)
BD-R (TL/QL) 100 GB / 128 GB (Ver.2.0)
BD-RE (SL/DL) 25 GB / 50 GB (Ver.2.1)
BD-RE TL 100 GB (Ver.3.0)
DVD DVD-ROM(SL/DL) 4.7 GB / 8.5 GB (Ver.1.1)
DVD-R 4.7 GB (Ver. 2.0 for Authoring: read only)
4.7 GB (Ver. 2.1 for General: read & write)
DVD-R DL 8.5 GB (Ver. 3.0)
DVD-RW 4.7 GB (Ver. 1.2/ Rev 1.0, 2.0, 3.0)
DVD-RAM 4.7GB/side (Ver. 2.2)
DVD+R 4.7 GB (Ver. 1.3)
DVD+R DL 8.5 GB (Ver. 1.2)
DVD+RW 4.7 GB (Vol.1 Ver.1.3, Vol.2 Ver.1.0)
CD CD-ROM Mode-1 data disc
CD-ROM Mode-2 data disc
CD-ROM XA, CD-I, Photo-CD Multi-Session, Video CD
CD-Audio Disc
Mixed mode CD-ROM disc (data and audio)
CD-Extra
CD-Text
CD-R (Conforming to “Orange Book Part 2”: read & write)
CD-RW (Conforming to “Orange Book Part 3”: read & write)
-Note- DVD-R 3.95GB (Ver.1.0 ), DVD-RAM (2.6GB) are not supported

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2.2 Writing method
(1) BD-R: Sequential Recording Mode with/without Pseudo-Overwrite
(2) BD-RE: Random Write, Sequential Recording Mode without Pseudo-Overwrite
(3) DVD-R SL: Disc at Once (DAO), Incremental Recording
(4) DVD-R DL: Disc at Once (DAO), Incremental Recording, Layer Jump Recording
(5) DVD-RW: Disc at Once (DAO), Incremental Recording, Restricted Overwrite
(6) DVD+R (SL/DL): Sequential Recording
(7) DVD+RW: Random Write
(8) DVD-RAM: Random Write
(9) CD-R/RW: Disc at Once (DAO), Session at Once (SAO), Track at Once (TAO)
and Packet Writing
2.3 Disc diameter..............................................120mm
80mm
2.4 Data capacity
• User Data/Block
BD-R/RE/ROM 2048 bytes/block
DVD-R/RW/RAM/ROM +R/RW 2048 bytes/block
CD (Yellow Book) 2048 bytes/block (Mode1 & Mode2 Form1)
2336 bytes/block (Mode2)
2328 bytes/block (Mode2 Form2)
2352 bytes/block (CD-DA)

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3. Drive performance
3.1 Host interface ........................................................T13 ATA/ATAPI-8
MMC-6, INF-8090i v8
USB Specification Revision 2.0( 480Mbps)
3.2 Write Speed
Media (Media Speed) Writing speed Transfer rate (MB/s)
BD-R SL (2x) 2x CLV 8.99
-R SL (4x) 2x CLV, 2-4x PCAV 8.99, 8.99-17.98
-R SL (6x) 2x CLV, 2-4x PCAV,2.5-6x CAV 8.99, 8.99-17.98, 11.24-26.97
BD-R SL LTH (2x) 2x CLV 8.99
-R SL LTH (4x) 2x CLV, 2-4x PCAV 8.99, 8.99-17.98
-R SL LTH (6x) 2x CLV, 2-4x PCAV,2.5-6x CAV 8.99, 8.99-17.98, 11.24-26.97
BD-R DL (2x) 2x 8.99
-R DL (4x) 2x CLV, 2-4x PCAV 8.99, 8.99-17.98
-R DL (6x) 2x CLV, 2-4x PCAV,2.5-6x CAV 8.99, 8.99-17.98, 11.24-26.97
BD-R TL (ALL) 2x CLV, 2-4x PCAV 8.99, 8.99-17.98
BD-R QL (ALL) 2x CLV, 2-4x PCAV 8.99, 8.99-17.98
BD-RE SL (1-2x) 2x CLV 8.99
BD-RE DL (1-2x) 2x CLV 8.99
BD-RE TL (1-2x) 2x CLV 8.99
DVD-R SL (2x) 2x CLV, 2.77
-R SL (4x) 2x CLV, 3.3-4x PCAV 2.77, 4.57-5.54
-R SL (8x, 16x) 2x CLV, 3.3-8x CAV 2.77, 4.57-11.08
DVD+R SL (4x) 2.4x CLV, 3.3-4x PCAV 3.32, 4.57-5.54
+R SL (8x, 16x) 2.4x CLV, 3.3-8x CAV 3.32, 4.57-11.08
DVD-R DL (4x) 2x CLV, 2+4x ZCLV 2.77, 2.77+5.54
-R DL (8x) 2x CLV, 2+4+6x ZCLV 2.77, 2.77+5.54+8.31
DVD+R DL (2.4x) 2.4x CLV 3.32
+R DL (8x) 2.4x CLV, 2.4+4+6x ZCLV 3.32, 3.32+5.54+8.31
DVD-RW (2x) 2x CLV 2.77
-RW (4x) 2x CLV, 2+4x ZCLV 2.77, 2.77+5.54
-RW (6x) 3x CLV, 3+4x, 3+4+6x ZCLV 4.15, 4.15+5.54, 4.15+5.54+8.31
DVD+RW (2.4x) 2.4x CLV 3.32
+RW (4x) 2.4x CLV, 2.4+4x ZCLV 3.32, 3.32+5.54
+RW (8x) 3.3x CLV, 3.3+6x, 3.3+6+8x ZCLV 4.57, 4.57+8.31, 4.57+8.31+11.08
DVD-RAM (2x) 2x ZCLV 2.77
-RAM (3x) 3x ZCLV 4.15
-RAM (5x) 3-5x PCAV 4.15-6.93
CD-R (ALL) 10x CLV 1.5
10-16x PCAV 1.5-2.4
10-2.4x CAV 1.5-3.6
CD-RW (MS: 1-4x) 4x CLV 0.6
-RW (HS:4-10x) 10x CLV 1.5
-RW (US:8-24x) 10x CLV, 10+16x ZCLV 1.5, 1.5+2.4
-RW (US+:8-32x) 10x CLV, 10+16x ZCLV 1.5, 1.5+2.4
*1) “+”: change by step for ZCLV
*2) “-”: continuous change, for CAV, PCAV

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3.3 Read speed
3.3.1 Data
Media Reading Speed Transfer rate (MB/s)
BD-ROM SL 2.5-6x CAV 11.24-26.97
BD-R SL 2.5-6x CAV 11.24-26.97
BD-R SL (8cm) 2.5-4x CAV 11.24-17.98
BD-ROM DL 2.5-6x CAV 11.24-26.97
BD-R DL 2.5-6x CAV 11.24-26.97
BD-R SL LTH 2.5 - 6x CAV 11.24-26.97
BD-R TL/QL 2.5 - 6x CAV 11.24-26.97
BD-RE SL / DL 2.5-6x CAV 11.24-26.97
BD-RE SL (8cm) 2.5- 4x CAV 11.24-17.98
BD-RE TL 2-4x PCAV 8.99-17.98
DVD-ROM SL 3.3-8x CAV 4.57-11.08
DVD±R SL 3.3-8x CAV 4.57-11.08
DVD±R SL (8cm) 3.3-5x CAV 4.57-6.92
DVD-ROM DL 3.3-8x CAV 4.57-11.08
DVD±R DL 3.3-8x CAV 4.57-11.08
DVD±R DL (8cm) 3.3-5x CAV 4.57-6.92
DVD±RW 3.3-8x CAV 4.57-11.08
DVD-RAM 2x CLV 2.77
3x CLV 4.15
3-5x PCAV 4.15-6.92
DVD-RAM (8cm) 2x CLV 2.77
CD-R / ROM 10-24x CAV 1.5-3.6
CD-RW 10-24x CAV 1.5-3.6
CD (8cm) 6.8-10.5x CAV 1.0-1.65
3.3.2 Video and Audio Playback
-Note- Read Speed: basically finalized discs specification.
BDMV (SL) 2x CLV 8.99
BDMV (DL) 2x CLV 8.99
DVD-ROM Video (SL) 4x CAV 2.3–5.54
DVD-ROM Video (DL) 4x CAV 2.3–5.54
CD-DA 10x CAV 0.6-1.5
Video CD 16x CAV 1.0-2.4
Rotational speed (CLV, ZCLV)
BD-RE / R / ROM 1x: Approx. 1,956 (Inside) - 810 r/min (Outside)
DVD-R / RW / ROM, +R / RW 1x: Approx. 1,390 (Inside) - 580 r/min (Outside)
DVD-RAM 2x: Approx. 3,250 (Inside) - 1,380 r/min (Outside)
CD-R / RW / ROM 1x: Approx. 500 (Inside) - 210 r/min (Outside)

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3.4 Burst transfer rate
USB High-Speed 480Mbps( 60MB/s)
USB Full -Speed 12Mbps( 1.5MB/s)
3.5 Access time (1/3 stroke)
BD-ROM 250 ms typ. * (Note 1)
DVD-ROM 200 ms typ. * (Note 1)
CD-ROM 200 ms typ. * (Note 1)
Note :
1) Average access time is the typical value of more than 50 times including latency and error correction time.
Test Disc: DVD-ROM: ALMEDIO TDR-820A
CD-ROM: LG LGDS-01A
BD-ROM: SONY BLX-103
*) Typical value defines a measured value in normal temperature (20 ºC.) and horizontal position.
3.6 Data error rate (Measured with 5 retries maximum)
BD-ROM/R/RE ................<10 -12
DVD-R/RW/ROM/RAM....<10 -12
DVD+R/+RW...................<10 -12
CD-R/RW/ROM...............<10-12 (Mode-1)
<10-9 (Mode-2)
Condition : It is assumed that the worst case raw error rate of the disc is 10-3
3.6 Spin up time without Multi-session
Spin up time (Time to drive ready mode from standby mode) :
BD-ROM(SL)...................15 s typ. (Time to drive ready mode from power on)
4 s typ. (Time to drive ready mode from sleep)
DVD-ROM (SL) ..............13 s typ. (Time to drive ready mode from power on)
4 s typ. (Time to drive ready mode from sleep)
CD-ROM .........................13 s typ. (Time to drive ready mode from power on)
4 s typ. (Time to drive ready mode from sleep)
Load time (Time to drive ready mode from disc insert. : Typ )
BD-ROM (SL/DL..............)28s / 28s
BD-R (SL/DL/TL/QL) .......28s / 35s / 45s / 45s
BD-RE(SL/DL/TL)............28s / 35s / 45s
DVD-ROM (SL/DL)..........18s / 18s
DVD-R (SL/DL)................25s / 25s
DVD-RW..........................25s
DVD+R (SL/DL)...............25s / 25s
DVD+RW.........................25s
DVD-RAM........................35s
CD-ROM..........................15s
3.7 Data buffer capacity ........................................................ 4 MB