Troubleshooting

Isolating an Assembly (Self-Test)

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.

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

Test 2 = channel 1,

 

 

Modules

Test 3 = channel 2, etc.

 

 

 

 

 

10 through 17

Expansion Board or Plug-on

Test 10 = channel 9,

 

 

Modules

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

Page 173
Image 173
HP E1418A manual Troubleshooting, Isolating an Assembly Self-Test, Test Number Failing Assembly Indicated