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2.1
Troubleshooting
Chapter 2 describes how to determine if a Field Replaceable Unit (FRU) in the computer is
causing the computer to malfunction. FRUs covered include the:
1.
System Board
2.
I/O Board
3.
External Floppy Disk Drive
The Diagnostics Disk operations are described in Chapter 3 and detailed replacement proce-
dures are given in Chapter 4.
The following tools are necessary for implementing the troubleshooting procedures:
1.
Diagnostics Disk
2.
Phillips screwdriver (2 mm)
3.
Toshiba MS-DOS system disk(s)
(You must install the following onto the disk: SYS.COM, FORMAT.COM,
FDISK.COM and FDISK.EXE)
4.
2DD or 2HD formatted work disk for floppy disk drive testing
5.
Cleaning kit for floppy disk drive troubleshooting
6.
Printer port LED
7.
Printer wraparound connector
8.
Serial port wraparound connector
9.
PC card wraparound card
10.
Multimeter
11.
External monitor
12.
PS/2 or compatible keyboard
13.
PS/2 or compatible mouse
14.
Multimedia sound system with line-in and line-out ports
15.
Headphone
16.
Microphone
17.
Speakers with amplifier
18.
External FDD
650CT
4.
Hard Disk Drive
5.
Keyboard
6.
Display
2-1
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Table of Contents
Troubleshooting
