IBM 6644 - Manual (Page 58)

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19x The computer chassis-intrusion
detector was cleared. This is an
informational message. No action is required.
2xx Memory error Go to “Running the IBM Enhanced
Diagnostics program” on page 57 for
instructions on running memory
diagnostics.
301 or
303 Keyboard error 1. Make sure the keyboard is
properly connected.
2. If the keyboard is properly
connected, have the computer
serviced.
604 Unsupported diskette drive
installed 1. Go to “Running the IBM Enhanced
Diagnostics program” on page 57
and follow the instructions for
running the IBM Enhanced
Diagnostics program.
2. If the problem persists, have the
computer serviced.
605 Diskette unlocked problem Have the computer serviced.
662 Diskette drive configuration error 1. Go to “Starting and using the
Configuration/Setup Utility
program” on page 27, and follow
the instructions to verify the
diskette drive configuration.
2. Run the diagnostic program for
the diskette drive. See “Running
the IBM Enhanced Diagnostics
program” on page 57.
3. If the problem persists, have the
computer serviced.
762 Math coprocessor configuration
error Have the computer serviced.
1762 Hard disk configuration error 1. Go to “Starting and using the
Configuration/Setup Utility
program” on page 27, and follow
the instructions to verify the hard
disk configuration.
2. If the problem persists, have the
computer serviced.
Code Description Action