Toshiba 70CT User Guide - Page 34

Troubleshooting Overview

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2 Troubleshooting Procedures 2.1 Troubleshooting Overview 2 2.1 Troubleshooting Overview Chapter 2 describes how to determine if a Field Replaceable Unit (FRU) is causing the computer to malfunction. The FRUs covered are: • Power Supply • System Board • FL Inverter Board • Floppy Disk Drive • Hard Disk Drive • Keyboard • Pointing Device • Display The Tests and Diagnostics are described in Chapter 3 and Replacement Procedures are detailed 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. Serial port wraparound connector 8. Multimeter 9. Printer port wraparound connector 10. PC card wraparound card 11. I/O Adapter 12. FDD Libretto 50CT/70CT Maintenance Manual 2-1

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2
Troubleshooting Procedures
2.1
Troubleshooting Overview
Libretto 50CT/70CT Maintenance Manual
2-1
2
2.1
Troubleshooting Overview
Chapter 2 describes how to determine if a Field Replaceable Unit (FRU) is causing the
computer to malfunction.
The FRUs covered are:
•
Power Supply
•
Floppy Disk Drive
•
Pointing Device
•
System Board
•
Hard Disk Drive
•
Display
•
FL Inverter Board
•
Keyboard
The Tests and Diagnostics are described in Chapter 3 and Replacement Procedures are
detailed 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.
Serial port wraparound connector
8.
Multimeter
9.
Printer port wraparound connector
10.
PC card wraparound card
11.
I/O Adapter
12.
FDD