HP E1418A - Manual (Page 174)

Troubleshooting
These procedures will help you isolate a failure to a particular assembly.
The major assemblies of the HP E1418A are available on an exchange basis.
Isolating an
Assembly
(Self-Test)
Use the following SCPI Common Command query to initiate a module
self-test.
! Start the Self-test.
*TST?
! Enter the 16-bit integer returned.
The query will return a +0 if no errors are encountered. The return value
looks like:
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Use Test Number Test Information
The Test Information bits are not described in this manual. The test number
is the number of the first test to fail. This number can be used to isolate a
failing assembly. The possible test numbers and probable failing assembly
are shown below.
Test Number Failing Assembly Indicated Notes
0 None All Self-tests passed
1 Main Board
2 through 9 Main Board or Plug-On
Modules
Test 2 = channel 1,
Test 3 = channel 2, etc.
10 through 17 Expansion Board or Plug-on
Modules
Test 10 = channel 9,
Test 11 = channel 10, etc.
18 through 25 Main Board
26 through 33 Main board
34 through 41 Expansion Board
42 through 43 Main Board
44 through 51 Main Board
52 through 59 Expansion Board
60 through 67 Main Board
68 through 75 Expansion Board
Note Since the query returns only the first failure test number, additional failures
are possible but not reported by this command.
173 Configuration and Disassembly Appendix E
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