CONTENTS Table of Contents
EDITION Edition Notice
FRONT_1 Notices
FRONT_1.1 Trademarks and Service Marks
CONTENTS Table of Contents
1.0 Product Description
1.1 Security
1.1.1 Power-On Password and Keyboard Password
1.2 System Board Features
1.2.1 Microprocessor
1.2.2 CMOS RAM and CMOS RAM Extension
1.2.3 ROM BIOS/POST
1.2.4 System Partition
1.2.5 Errors during POST
1.2.6 Diskette-Drive Controller
1.2.7 VGA with LCD Controller
1.2.8 Serial Port
1.2.9 Parallel Port
1.2.10 External Input Device Port
1.2.11 Optional Communication-Interface Connector
1.2.12 Suspend and Resume Functions
1.2.13 System-Expansion Port
2.0 Option Compatibility
2.1 Hard Disk Drive
2.1.1 Replacing the Hard Disk Drive
2.2 Diskette Drive and Diskette
3.0 System Memory Requirements
4.0 Specifications
4.1 System
4.2 AC Adapter
5.0 Special Tools
6.0 Removals and Replacements
6.1 1010 Bottom Cover
6.2 1020 Optional Communication Adapter
6.3 1030 Memory Module Kit
6.4 1040 Voltage Converter
6.5 1050 Hard Disk Drive
6.6 1060 Diskette Drive
6.7 1070 System Board and Keyboard Control Card
6.8 1080 Keyboard Assembly
6.9 1090 I/O Panel Assembly
6.10 1100 Backup Battery
6.11 1110 Standby Battery
6.12 1120 LCD Bezel
6.13 1130 LCD Inverter
6.14 1140 LCD Panel
7.0 Locations
7.1 Front View
7.2 Rear View
7.3 Interior View
7.4 System Status Indicators
7.5 System Board
7.6 Keyboard Control Card
IBM PS/2 Model N51 SX HMR
Table of Contents
¦ Copyright IBM Corp. 1991
CONTENTS - 1