Introduction; Features - LG GCC-4520B Service Manual

This service manual provides a variety of service
information.
It contains the mechanical structure of the CD-
RW/DVD-ROM Drive and the electronic circuits in
schematic form. This CD-RW/DVD-ROM Drive
was manufactured and assembled under our strict
quality control standards and meets or exceeds
industry specifications and standards.
This CD-RW/DVD-ROM drive is an internal drive
unit designed for use with IBM PC, HP Vectra, or
1. General
1) Enhanced IDE interface.
2) Internal 5.25 inch, halfheight CD-RW/DVD-ROM Drive.
3) 2 Mbytes buffer memory(Super-Link
4) Power loading and power ejecting of a disc. The disc can also be ejected manually.
5) Supports Power saving mode and Sleep mode.
6) Vertical and Horizontal operation.
7) Support Mt. Rainier function.
2. Supported disc formats
1) Reads and writes data in each CD-ROM, CD-ROMXA, CD-I FMV, Video CD, and CD-EXTRA
2) Reads data in Photo CD (Single and Multi session).
3) Reads and writes standard CD-DA.
4) Reads and writes CD-R discs conforming to "Orange Book Part 2".
5) Reads and writes CD-RW discs conforming to "Orange Book Parts 3".
6) Reads DVD-ROM, DVD-R/RW and DVD+RW discs.
3. Supported write method
1) Disc at once (DAO), Session at once (SAO), Track at once (TAO), Variable packet, Fixed packet, and
Multi-session.
4. Performance
1) Random average access time : 100ms(CD-ROM/R/RW), 120ms(DVD-ROM)
2) CD-R Record speed : 4X, 8X, 16X(CLV), 24X, 32X,40X(PCAV), 20~52X(Full CAV).
3) CD-RW Record speed : 4X, 10X,16X(CLV), 24X(PCAV).
4) Sustained Transfer rate : Max 7,800Kb/s (CD-ROM, Max 52X),
5) PIO Mode 4
6) Multimedia MPC-3 Spec compliant.
7) Support CD-TEXT read.
5. Audio
1) Output 16 bit digital data over ATA interface.
2) Software Volume Control
3) Equipped with audio line output and headphone jack for audio CD playback.
4) Front panel Volume Control for Headphone Output.

INTRODUCTION

FEATURES

TM function embedded for Buffer underrun.)
Max 21,600Kb/s (DVD-ROM, Max 16X)
compatible computer. It can write as much as 650
Mbytes of digital data into CD-R/RW disc, and can
read as much as 650 Mbytes of digital data stored
in a CD-ROM, CD-R and CD-RW disc.
This CD-RW/DVD-ROM 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.
3