5c-2
Service Error Messages
506 FM mult cal restore failure
Description After detecting a failure in comparing calibration data between RAM and
the calibration ROM, a data restore was attempted unsuccessfully.
Cause There is either a failure in writing data to RAM or in reading data from
the calibration ROM.
What To Do The calibration ROM can be verified by replacing the A5 assembly. The
calibration ROM is contained in the assembly.
If the failure is still present after replacing the A5 assembly, replace the
A3 assembly, which contains the RAM.
507 Output level cal restore failure
Description After detecting a failure in comparing calibration data between RAM and
the calibration ROM, a data restore was attempted unsuccessfully.
Cause There is either a failure in writing data to RAM or in reading data from
the calibration ROM.
What To Do The calibration ROM can be verified by replacing the A6 assembly. The
calibration ROM is contained in the assembly.
If the failure is still present after replacing the A6 assembly, replace the
A3 assembly, which contains the RAM.
508 Attenuator cal restore failure
Description After detecting a failure in comparing calibration data between RAM and
the calibration ROM, a data restore was attempted unsuccessfully.
Cause There is either a failure in writing data to RAM or in reading data from
the calibration ROM.
What To Do The calibration ROM can be verified by replacing the A6 assembly. The
calibration ROM is contained in the assembly.
If the failure is still present after replacing the A6 assembly, replace the
A3 assembly, which contains the RAM.
509 Timebase cal restore failure
Description After detecting a failure in comparing calibration data between RAM and
the calibration ROM, a data restore was attempted unsuccessfully.
Cause There is either a failure in writing data to RAM or in reading data from
the calibration ROM.
What To Do The calibration ROM can be verified by replacing the A4 assembly. The
calibration ROM is contained in the module.
If the failure is still present after replacing the A4 assembly, replace the
A3 assembly, which contains the RAM.
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