Toshiba T4500 User Manual page 25

2.1 T4500/T4600 Family Troubleshooting
Chapter 2 describes how to determine if a Field Replaceable Unit (FRU) in the T4500/T4600
Family is causing the computer to malfunction. The FRUs covered are:
System PCB
Floppy Disk Drive
Hard Disk Drive
Keyboard
Display
Status Indicator Panel
The Diagnostics Disk operations are described in Chapter 3, Tests and Diagnostics and detailed
disassembly and reassembly procedures are given in Chapter 4, Replacement Procedures.
The following tools are necessary for implementing the troubleshooting procedures:
1. A T4500/T4500C Diagnostics Disk or T4600/T4600C Diagnostics Disk
2. A Phillips head screwdriver (2 mm)
3. A Toshiba MS-DOS system disk
4. A 2DD or 2HD formatted work disk for floppy disk drive testing
5. A cleaning kit for floppy disk drive troubleshooting
6. A printer port LED
7. An RS-232-C wraparound connector
8. A printer wraparound connector
9. A multimeter
10. An external 5.25-inch floppy disk drive (only T4500 and T4500C)
11. An external CRT
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