Service manual

Table 8-2. Self-Test Errors
Error Description Typical Causes
1
2
3
4
Multimeter does not respond to
self-test
Invalid communication between
A1 and A2 processors
Data line test between
multimeter and mainframe failed
Invalid communication between
multimeter and mainframe
. Bad connections/settings
. Incorrect operation
. Hardware failure (exchange)
. Bad A1/A2 connection
. Hardware failure (exchange)
. Bad connections/settings
. Incorrect operation
. Hardware failure (exchange)
. Bad connections/settings
. Incorrect operation
. Hardware failure (exchange)
Operator Errors
Apparent failures may result from operator errors. See Appendix B -
Error Messages in the Agilent E1326B/E1411B User’s Manual for
information on operator errors.
Catastrophic Failure
If a catastrophic failure occurs, see "Testing Assemblies" to troubleshoot
the multimeter.
Performance Out of Specification
If the multimeter performance is out of specification limits, use the
adjustment procedures in Chapter 5 - Adjustments to correct the
problem.
If the condition repeats, see "Testing Assemblies" to troubleshoot the
multimeter.
Testing
Assemblies
You can use the tests and checks in Table 8-3 to isolate the problem to a
user-replaceable part on the multimeter frame, to the A1 Outguard
PCA, or to the A2 Inguard PCA. See Figure 6-1 in Chapter 6 -
Replaceable Parts for locations of user-replaceable parts.
NOTE
If the problem cannot be traced to a user-replaceable part listed in Table
6-1, return the multimeter to Agilent for exchange. See Chapter 6 -
Replaceable Parts for procedures.
Service 8-3