•
Press the following keys:
[
Preset ]
[
DO PRESET ]
[
System Utility ]
[
CALIBRATN ]
[
AUTO CAL OFF ]
[
Input ]
[
ALL CHANNELS ]
[
CH* FIXED RANGE ]
1
[ Vpk ]
[
System Utility ]
[
MORE ]
[
SELF TEST ]
[
TEST LOG ]
[
CLEAR TEST LOG ]
[
Rtn ]
[
LOOP MODE ON ]
[
FUNCTIONL TESTS ]
[
ALL ]
[
C ONTINUE ]
• After this test detects a failure, press the following keys:
[
Rtn ]
[
LOOP MODE OFF ]
• Compare the analyzer’s test log to the ‘’Self Test Troubleshooting Guide’’
starting on page 4-33.
If the analyzer’s test log matches more than one entry in the table, use the entry closest
to the beginning of the table. The table lists the probable faulty assembly or
assemblies and any recommended adjustment or troubleshooting procedure to do
before replacing the assembly. If both an adjustment and a test are recommended, do
the adjustment first.
All pass and fail messages are displayed on the test log along with the number of times
a test passes or fails. When loop mode is activated, the analyzer continually repeats a
test until power is cycled or loop mode is aborted by pressing the [
LOOP MODE
OFF ] softkey. During some tests, the keyboard is not active and loop mode cannot be
turned off. If this occurs, wait for the test to finish.
If you abort a self test before the self test is finished, the analyzer may fail its
calibration routine. To prevent this from happening, press [
Preset ][DO PRESET ]or
cycle power after you abort a self test.
To run a specific self test in loop mode, press the keys listed in step 4 except select the
specific self test instead of [
ALL ].
Agilent 35670A Troubleshooting the Analyzer
To troubleshoot intermittent failures
4-41
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