Toshiba A200 Personal Computer User Manual

2.1 Troubleshooting 2 Troubleshooting Procedures
PORTEGE A200 Maintenance Manual (960-499) 2-1
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 8. Touch pad
2. System Board 9. SD card slot
3. USB FDD 10. Modem
4. HDD 11. LAN
5. Optical Drive 12. Sound
6. Display 13. Wireless LAN
7. 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:
For tools required for executing the Test Program, refer to the Chapter3. For tools required for
disassembling/assembling, refer to the Chapter 4.
1. A set of tools for debugging port test (test cable, test board, RS-232C cross cable,
display, D port FD)
2. A PC with a serial port (for displaying debug port test result)
3. Toshiba MS-DOS system FD
4. An external CRT display(for Display trouble shooting)
5. A SD card(for SD card slot trouble shooting)
6. An external microphone(for Sound trouble shooting)
7. Headphone(for Sound trouble shooting)