Texas Instruments 660 - Manual (Page 66)

5-6 Troubleshooting Procedures
Table 5-2 Power On Self Test Error Messages
Message Possible Cause Action
Diskette drive A failure The drive failed or is missing. Check the drive to determine the
problem.
Diskette read failure -
press F1 to retry boot, F2
for SETUP utility The disk is either not
formatted or is defective. Replace the disk with a bootable
disk and retry.
Display adapter failed,
using alternate The primary video adapter
failed. Check the primary video
adapter.
Gate A20 failure The keyboard controller is
not accepting command,
specifically, the enable and
disable A20 command. Check the keyboard controller
and system board. Turn the
power off, then back on again. If
the problem persists contact
qualified service personnel.
Fixed disk configuration
error The specified configuration is
not supported or doesn't
match the actual hardware
installed. Correct the fixed disk
configuration.
Fixed disk controller
failure The fixed disk may be
defective. Try rebooting. If that doesn't
work, replace the fixed disk.
Fixed disk read failure -
press F1 to retry boot, F2
for SETUP utility The fixed disk may be
configured incorrectly or is
defective. Check the drive type selected in
SETUP. Try rebooting. If that
does not work, replace the fixed
disk.
Pointer device failure The PS/2-style mouse failed. Try rebooting. If problem
persists, check the mouse, cable
and connector.