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Chapter 2, Troubleshooting
How to Troubleshoot the Test Set
N:\mkt\MANUALS\HP8924C\ALR\trouble.fb
How to Troubleshoot the Test Set
This section explains the steps for troubleshooting the Test Set. Document the
result of each step in case you need to contact Hewlett-Packard for service
assistance.
ARE YOU SURE A
PROBLEM EXISTS?
Before troubleshooting the Test Set, you should attempt to duplicate the problem
by performing the application where the suspected failure occurred. This is
especially important if the Test Set is being used in a new application where
misapplication, or incorrect operation of the Test Set may be involved.
If the Test Set fails in an application where it has worked correctly before, and
the unit-under-test is working correctly, a failure probably exists.
Step 1- Run the Power-up Diagnostic
On power-up, the Test Set runs a Self-Test Diagnostic. Most of the Test Set’s digital
control functions are tested. The outcome of the test appears on the CRT (if operating)
and on four LEDs under the top cover.
Step 2- Run the Functional Diagnostic Routines
The RF, AF, Miscellaneous, and Digital diagnostic routines verify the proper
operation of most assemblies in the Test Set. If a problem is found, the suspected
faulty assembly is indicated, along with the level of confidence that replacing the
indicated module will correct the problem.
Step 3- Run the Periodic Calibration Routines
Operating parameters may drift over extended periods. Built-in calibration routines
adjust certain data latch settings to assure optimal Test Set operation. Applications
requiring operation at the limits of Test Set’s performance may fail if the Test Set is
not calibrated.
Step 4- Manual Troubleshooting
Suggestions of things to try include: using Performance Tests to verify specified
operation, and swapping assemblies.
These steps are illustrated on the next page. Instructions for performing these
steps are given in this chapter.
Содержание 8924E
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Страница 53: ...Contents 53 N mkt MANUALS HP8924C ALR 8924CE TOC Index 633 ...
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Страница 70: ...70 Chapter 1 Introduction Hardware and Firmware Enhancements N mkt MANUALS HP8924C ALR intro fb ...
Страница 137: ...137 N mkt MANUALS HP8924C ALR per_adj fb 4 Periodic Adjustments ...
Страница 448: ...448 Chapter 9 HP 8924C E Specifications General Specifications N mkt MANUALS HP8924C ALR specs fb ...
Страница 449: ...449 N mkt MANUALS HP8924C ALR service fb 10 Service Screen ...
Страница 454: ...454 Chapter 10 Service Screen Troubleshooting with the Service Screen N mkt MANUALS HP8924C ALR service fb ...
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Страница 522: ...522 Chapter 11 Block Diagrams Assembly Details N mkt MANUALS HP8924C ALR blkdia fb ...
Страница 530: ...530 Chapter 12 HP 8924C Replaceable Parts Replaceable Parts Listing N mkt MANUALS HP8924C ALR 24c_rpl fb ...
Страница 538: ...538 Chapter 13 HP 8924E Replaceable Parts Replaceable Parts Listing N mkt MANUALS HP8924C ALR 24e_rpl fb ...
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Страница 640: ...Index 640 N mkt MANUALS HP8924C ALR 8924CE IX V VOLUME control 61 W Write Protect Cal Data 143 ...