Toshiba 650CT Maintenance Manual page 40

Procedure 2 Diagnostic Test Program Execution Check
Insert the Diagnostics disk in the computer's floppy disk drive, turn on the computer, and run
the test. Refer to Chapter 3, Tests and Diagnostics, for more information about the diagnos-
tics test procedures.
Floppy disk drive test error codes and their status names are listed in Table 2-5. Make sure
the floppy disk in the FDD is formatted correctly and that the write-protect tab is disabled. If
any other errors occur while executing the FDD diagnostics test, go to Check 1.
Check 1 If the following message displays, disable the write-protect tab on the floppy disk.
Write
If any other message appears, perform Check 2.
Check 2 Make sure the floppy disk is formatted correctly. If it is, go to Procedure 3.
2-22
Table 2-5 FDD error codes and status
Code
01h Bad command
02h Address mark not found
03h Write protected
04h Record not found
06h Media removed on dual attach card
08h DMA overrun error
09h DMA boundary error
10h CRC error
20h FDC error
40h Seek error
60h FDD not drive
80h Time out error (Not ready)
EEh Write buffer error
FFh Data compare error
protected
Status
650CT