General Feature - LG CRD-8402B Service Manual

This service manual provides a variety of service
information. It contains the mechanical structure of
the CD-ROM Drive together with mechanical
adjustments and the electronic circuits in schematic
• Enhanced IDE interface
• Internal 5.25 inch, halfheight CD-ROM Drive
• Fast 75ms Average Access Time
• Max 6,000KB/sec Sustained Transfer rate
• Photo-CD Multisession Disc Spec compliant
• Multimedia MPC-3 Spec compliant
• Power Tray Loading/Ejection Mechanism
• 3 Way Eject support (Software, O/C Button,
Emergency Eject)
• Closed Enclosure
• Built-in ATAPI Interface Controller
1. SUPPORTED SYSTEM
• IBM Compatible 486SX or Above (With PIO mode 4 recommended)
2. SUPPORTED OS
• MS-DOS Version 3.1 or Higher
• OS/2 Warp (Ver 3.0)
• Windows '95/'98
3. GENERAL PERFORMANCE
• Data Transfer Rate..........................................................................................Sustained Data Transfer Rate
• Data Buffer Capacity .....................................................................................................................128 kbytes
• Access Time ...................................................................................................Random Access Time : 75 ms
4. POWER REQUIREMENTS
• Voltage.......................................................................................................................................+5V DC + 5%
• Ripple...................................................................................................................+5V : Less than 100mVp-p
• Current........................................................................................................................+5V : 0.9A (Maximum)
5. AUDIO PERFORMANCE
• Frequency Response .....................................................................................................20Hz~20KHz( + 3dB)
• S/N Ratio (IHF-A+20 KHz LPF)........................................................................85 dB (Typical at 1 KHz 0dB)
• T.H.D. (IHF-A+20 KHz LPF) ............................................................................0.05% (Typical at 1 KHz 0dB)
• Channel Separation (IHF-A+20 KHz LPF)..............................................................................80 dB (Typical)
• Output Voltage (1kHz 0dB) 47KΩ Load .................................................................................0.7Vrms + 10%
• Headphone Level (1kHz 0dB) 33Ω Load ...............................................................................0.7Vrms + 20%
INTRODUCTION

GENERAL FEATURE

SPECIFICATIONS
form. This CD-ROM Drive was manufactured and
assembled under our strict quality control standards
and meets or exceeds industry specifications and
standards.
• Software Volume Control
• 8 Times Digital Filter for CD Audio
• Front panel Volume Control for Headphone Output
• Built-in MODE-1 ECC/EDC
• MTBF 125,000h POH (at 10% Utilization)
• PIO Mode 4 & Multi DMA Mode 2 support
• Horizontal or Vertical Mounting
• Digital audio output connector
• Digital audio through ATAPI Interface
• Subcode (P-W) through ATAPI Interface
• Spin-down Mode for energy saving
• Solaris Ver 2.4 or Higher
• Linux slackware Ver 2.3
• Windows NT 4.0 or later
18Times Speed (Inner side) : 2,700 kbytes/sec
40 Times Speed (max., Outer side) : 6,000 kbytes/sec
+12V DC + 5%
+12V : Less than 100mVp-p
+12V : 1.5A (Maximum)
80 dB (Limit at 1 KHz 0dB)
0.15% (Limit at 1 KHz 0dB)
70 dB (Limit)
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