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

Service Error Messages
5c
This chapter describes service error messages. Front panel and HP-IB
operation messages are covered in Chapter lc, “Operation Messages”.
502
Description
Cause
What To Do
503
Description
What To Do
504
Description
Cause
What To Do
505
Description
Cause
What To Do
Updated cal file
The RAM calibration file has been updated from
the calibration ROM.
This is normal when a module is replaced.
This message requires no action.
Cal corrupt: restored
After detecting a failure in comparing calibration
data between RAM and the calibration ROM, a data
restore was done.
This message requires no action.
Modulation calrestorefailure
After detecting a failure 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.
Replace the A3 assembly. Both the calibration ROM
and RAM are on the A3 assembly.
FM sense 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 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.
Service Error Messages 51s1