Tektronix TDS6404, Service Manual

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Troubleshooting
6- 64
TDS6000 Series Service Manual
Table 6- 7: Action required for module replaced
Module replaced Adjustment required Software update required
Front panel assembly No None
Acquisition board Yes Boot ROM and
authorization code
PPC Processor board Yes Boot ROM and
authorization code
NLX processor assembly No Windows,
oscilloscope application
Display panel or display system No None
Power supply Yes None
Interconnect boards No None
Fans No None
BIOS Error Messages (Bali NLX)
Table 6--8 lists error messages displayed by the BIOS.
Table 6- 8: BIOS Error messages (Bali)
Error message Explanation
GA20 Error An error occurred with Gate-A20 when switching to protected
mode during the memory test.
Pri Master HDD Error
Pri Slave HDD Error
Sec Master HDD Error
Sec Slave HDD Error Could not read sector from corresponding drive.
A: Drive Error
B: Drive Error No response from diskette drive.
Cache Memory Error An error occurred while testing L2 cache. Memory may be bad.
CMOS Battery Low Replace the batter soon.
CMOS Display Type Wrong The display type is different than what has been stored in CMOS.
Check Setup to make sure type is correct.
CMOS Check Sum Bad The CMOS checksum is incorrect. CMOS memory may have been
corrupted. Run Setup to reset values.
CMOS Settings Wrong CMOS values are not the same as the last boot. These values
have either been corrupted or the battery has failed.
CMOS Date/Time Not Set The time and/or date values stored in CMOS are invalid. Run
Setup to set correct values.
DMA Error Error during read/write test of DMA controller.