Troubleshooting Techniques; Identifying The Problem; Testing The Assembly - HP E1340A Service Manual

Troubleshooting Techniques

Identifying the
Problem
Testing the
Assembly
82 Service
To troubleshoot an HP E1340A problem, you should first identify the
problem, and then isolate the cause to a user-replaceable part.
AFG problems can be divided into three general categories:
•
Operator errors
•
Catastrophic failures
•
Performance out of specification
Operator Errors
Apparent failures may result from operator errors. See Appendix B in the
HP E1340A User's Manual for information on operator errors. If the
mainframe or command module returns a "DEVICE DRIVER NOT
FOUND" error, see Chapter 1 of the HP E1340A User's Manual for
information on downloading the driver.
Catastrophic Failure
If a catastrophic failure occurs, see "Testing the Assembly" to troubleshoot
the AFG.
Performance Out of Specification
If the AFG fails any of its Performance Tests, perform the adjustments
described in Chapter 3, then repeat the Performance Tests.
You can use the tests and checks in Table 5-1 to isolate the problem.
See Figure 4-1 in Chapter 4 for locations of user-replaceable parts.
Table 5-1. HP E1340A Tests/Checks
Test/Check Reference Designator
Heat Damage - - - - - - - - - -
AFG/Jumper A1SP2
Settings
AFG PCAs A1F1 - A1F2
Check:
Discolored PC boards
Damaged insulation
Evidence of arcing
LADDR setting
Fuse continuity
Chapter 5