NCR 7458 Table of Contents

Table of Contents

Chapter 1: Product Overview

Introduction........................................................................................... 1-1

Cabinet............................................................................................. 1-2

Label Locations......................................................................................1-4

Chapter 2: POST Diagnostics

Power-On Self-Test (POST) Errors .....................................................2-1

Recoverable POST Errors ..............................................................2-2

Error and Beep Codes.................................................................... 2-2

Terminal POST Errors....................................................................2-6

Test Points and Beep Codes.......................................................... 2-6

Chapter 3: Hardware Service

Introduction........................................................................................... 3-1

Safety Requirements ......................................................................3-1

Back Panel Cable Connectors.............................................................. 3-3

Electronics Box Disassembly Procedures ..........................................3-4

Removing the Electronics Tray.....................................................3-4

Replacing the Electronics Tray................................................. 3-5

Removing the Motherboard..........................................................3-6

Replacing the Motherboard.................................................... 3-10

Removing a PCI Adapter Card...................................................3-11

Removing the Power Supply...................................................... 3-12

Replacing the Power Supply ..................................................3-13

Removing the Flexible Disk Drive............................................. 3-13

Replacing the Flexible Disk Drive .........................................3-14

Removing the CD-ROM Drive ...................................................3-14