Tektronix TLA715 Series, Service Manual

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Troubleshooting
TLA715 Dual Monitor Portable Mainframe Service Manual
6--51
BIOS Setup Error Messages
The instrument runs a BIOS test when it boots up. If the BIOS test encounters a
problem, the program displays the error on the display. Table 6--5 lists the error
codes, an explanation of each error code, and actions that can be taken. Refer to
the
Tektronix Logic Analyzer Family User Manual for information on BIOS setup
parameters and feature settings.
Table 6--5: BIOS error codes and explanations
Error code Explanation Action to be taken
Check date and time set-
tings. The date and time settings have been reset to their factory
default values. In the BIOS Setup, enter the correct time
and date.
Diskette drive A error The BIOS test recognizes the presence of the floppy disk
drive, but the floppy disk drive fails the power-on self-test.
The floppy disk drive may be defined incorrectly in the
CMOS setup.
The floppy disk drive may not be connected correctly on the
adapter board.
Verify the floppy disk drive is configured
correctly in the CMOS setup.
Verify that the floppy disk drive cable is
connected on the floppy disk drive and the
adapter board.
Extended RAM Failed at
offset: nnnn The extended memory may not be configured correctly or
the extended memory is defective at HEX address nnnn. Verify that the extended memory is config-
ured correctly in the CMOS setup.
Exchange the SO DIMMs. If one of the SO
DIMMs is defective the error address should
change.
Failing Bits: nnnn The RAM address mapped to HEX nnnn in the system,
shadow, or extended memory has failed. A 1 in the map
indicates a failed bit. Exchange the SO DIMMs.
If one of the SO DIMMs is defective the
error address should change.
Fixed Disk 0 Failure
(or)
Fixed Disk Controller Failure
The hard disk drive may not be defined correctly in the
CMOS setup.
The hard disk drive may not be connected correctly. The
hard disk drive may be defective.
Replaceable hard disk drive not installed.
Replaceable hard disk drive may be jumpered as a slave,
and there is not a master fixed hard disk drive present.
Verify the hard disk drive is configured
correctly in the CMOS setup.
Verify that the hard disk drive cable is
connected on the hard disk drive and on the
adapter board.
Replace the hard disk drive and reinstall the
TLA Series software.
Incorrect Drive A Type - run
Setup The floppy disk drive may not be defined correctly in the
CMOS setup. Verify the floppy disk drive is configured
correctly in the CMOS setup.
Invalid NVRAM media type The BIOS cannot access the NVRAM. Replace the controller board.
Keyboard controller error The keyboard controller may be defective. Swap keyboard with a known good
keyboard.