HP 8648 A/B/C/D - Changpuak.ch

509
Description
Cause
What To Do
510
Description
Cause
What To Do
511
Description
Cause
What To Do
Timebase calrestorefailure
After detecting a failure in comparing calibration
data between RAM and the calibration ROM, a data
restore was attempted unsuccessfully.
There is either a failure in writing data to RAM or
in reading data from the calibration ROM.
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.
Temperature cal restore failure
After detecting a failure in comparing calibration
data between RAM and the calibration ROM, a data
restore was attempted unsuccessfully.
There is either a failure in writing data to RAM or
in restoring data from the calibration ROM.
The calibration ROM can be verified by replacing
the A7 assembly. The calibration ROM is contained
in the module.
If the failure is still present after replacing the A7
assembly, replace the A3 assembly, which contains
the RAM.
TC coeff's calrestorefailure
After detecting a failure in comparing calibration
data between RAM and the calibration ROM, a data
restore was attempted unsuccessfully.
There is either a failure in writing data to RAM or
in reading data from the calibration ROM.
The calibration ROM can be verified by replacing
the A7 assembly. The calibration ROM is contained
in the assembly.
If the failure is still present after replacing the A7
assembly, replace the A3 assembly, which contains
the RAM.
Service Error Messages 5c-3