Troubleshooting - Toshiba libretto U100 Maintenance Manual

2.1 Troubleshooting

2
2.1 Troubleshooting
Chapter 2 describes how to determine if a Field Replaceable Unit (FRU) in the computer is
causing the computer to malfunction. The FRUs covered are:
1. Power supply
2. System Board
3. USB FDD
4. 1.8" Hard Disk Drive 9. LAN
5. Keyboard
The Detailed replacement procedures are given in Chapter 4. Test Program operations are
described in Chapter 3.
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 FDD testing)
5. Cleaning disk kit (for FDD head cleaning)
6. A set of tools for debug port test (test cable, test board, RS-232C cross cable, display,
D port FD)
7. PC with a serial port (for displaying debug port test result)
8. Wraparound connector for PC card
9. Tester
10. External Monitor
11. External USB Keyboard
12. External USB mouse
13. Headphone
14. Microphone
15. LAN wraparound connector
libretto U100 Maintenance Manual (960-520)
6 Display
7. Accuoint
8. Modem
10.Sound
2 Troubleshooting Procedures
11. Bluetooth
12. Wireless LAN
13. SD Card Slot
14. Fingerprint
15. libretto DVD Dock
[CONFIDENTIAL] 2-1