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2.5 FDD Troubleshooting 2 Troubleshooting Procedures
Procedure 2 Diagnostic Test Program Execution Check
Insert the Diagnostics Disk in the FDD, turn on the computer and run the test. Refer to
Chapter 3, Tests and Diagnostics, for more information about the diagnostics test procedures.
Floppy disk drive test error codes and their status names are listed in Table 2-3. Make sure
the floppy disk 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.
Table 2-4 FDD error code and status
Code Status
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 No FDD
80h Time out error (Not ready)
EEh Write buffer error
FFh Data compare error
Check 1 If the following message appears, disable the write protect tab on the floppy disk.
If any other message appears, perform Check 2.
Write protected
Check 2 Make sure the floppy disk is formatted correctly. If it is, go to Procedure 3.
TECRA M1 Maintenance Manual (960-436) 2-31