Anritsu 682XXB - Manual (Page 169)

Chapter 5
Troubleshooting
5-1
INTRODUCTION This chapter provides information for troubleshooting signal generator
malfunctions. The troubleshooting procedures presented in this chap-
ter support fault isolation to a replaceable subassembly or RF compo-
nent. (Remove and replace procedures for the subassemblies and RF
components are found in Chapter 6.)
5-2
RECOMMENDED TEST
EQUIPMENT The recommended test equipment for the troubleshooting procedures
presented in this chapter is listed in Chapter 1, Table 1-2 (page 1-12).
5-3
ERROR AND
WARNING/STATUS
MESSAGES During normal operation, the 682XXB/683XXB generates error mes-
sages to indicate internal malfunctions, abnormal instrument opera-
tions, or invalid signal inputs or data entries. It also displays warning
messages to alert the operator to conditions that could result in inac-
curate signal generator output. In addition, status messages are dis-
played to remind the operator of current menu selections or settings.
Self-Test
Error
Messages The 682XXB/683XXB firmware includes internal di-
agnostics that self-test the instrument. These self-
test diagnostics perform a brief go/no-go test of most
of the instrument PCBs and other internal assem-
blies.
You can perform an instrument self-test at any time
during normal operation by pressing
SYSTEM and
then the System Menu soft-key Selftest .
If the signal generator fails self-test, an error mes-
sage(s) is displayed on the front panel data display.
These error messages describe the malfunction and,
in most cases, provide an indication of what has
failed. Table 5-1 is a summary listing of the self-test
error messages. Included for each is a reference to
the troubleshooting table that provides a description
of the probable cause(s) and a procedure for identify-
ing the failed component or assembly.
682XXB/683XXB MM 5-3