User Guide

2.1 Troubleshooting 2 Troubleshooting Procedures

2.1 Troubleshooting

Chapter 2 describes how to determine which Field Replaceable Unit (FRU) in the

computer is causing the computer to malfunction. (The “FRU” means the replaceable unit

in the field.) The FRUs covered are:

1. Power supply 7. Touch pad

2. System Board 8. Optical Drive

3. 3.5” USB FDD 9. Modem

4. 2.5” HDD 10. LAN

5. Keyboard 11. Sound

6. Display 12. Wireless LAN

The Test Program operations are described in Chapter 3. Detailed replacement procedures

are given in Chapter 4.

The following tools are necessary for implementing the Diagnostics procedures:

1. Diagnostics Disk (Test program for maintenance)

2. Phillips screwdrivers

NOTE: Be sure to use the PH point size “0” screwdriver complying with the ISO/DIS

8764-1:1996.

3. Toshiba MS-DOS system FD

4. Work disk (for USB FDD testing)

5. Cleaning disk kit (for USB FDD head cleaning)

6. Debug port LED

7. Wraparound connector for PC card

8. Tester

9. External CRT

10. External USB FDD

11. External USB test module

12. External USB cable

13. External USB mouse

14. Headphone

15. Microphone

16. Toshiba CD-ROM test disk (ZA1217P01/P000204190)

17. Toshiba-EMI DVD-ROM test disk TSD-1

18. Music CD

19. CD-RW media (recommended :RICOH, Mitsubishi Kagaku supporting 4x media)

20. DVD-ROM media (normal media on the market)

21. RJ-11 connector checker LED

22. LAN wraparound connector

23. Speaker with an input terminal for S/PDIF

24. Personal computer that can communicate by wireless LAN for wireless LAN

troubleshooting

Satellite A50/TECRA A2 Maintenance Manual (960-478) 2-1