Troubleshooting
6- 62
TLA721 Benchtop & TLA7XM Expansion Mainframe Service Manual
BIOS Error Messages
The instrument runs a BIOS test on when you first power-on the instrument. If
the BIOS test encounters any problem the program displays the error on the
external monitor. Table 6--12 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- 12: BIOS error codes and explanations
Error code
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 BIOS Setup, enter the correct
date and time.
Diskette drive
A error
The BIOS test recognizes the presence of
the floppy disk drive but the floppy disk
drive fails the POST test.
The floppy disk drive may be defined
incorrectly in the CMOS setup.
The floppy disk drive may not be con-
nected 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 configured correctly in the
CMOS setup.
Exchange the SO DIMMs, if one
of the SO DIMMs are 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 are 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.
The replaceable hard disk drive may not
be installed.
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.
Verify that the replaceable hard
disk drive is installed.
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.
Summary of Contents for TLA7XM
Page 5: ......
Page 13: ...Table of Contents viii TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 17: ...Service Safety Summary xii TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 21: ...Preface xvi TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 25: ...Introduction xx TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 43: ...Specifications 1 18 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 85: ......
Page 87: ...Adjustment Procedures 5 2 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 161: ...Repackaging Instructions 6 74 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 165: ...Electrical Parts List 8 2 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 169: ...Diagrams 9 4 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 189: ...Mechanical Parts List 10 20 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...