HP 70000 series, Руководство пользователя

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The \Module Removal Method" may only be used to troubleshoot the HP-MSIB when error
indicators are ashing. Modules with ashing error indicators are individually removed
from the HP 70001A mainframe or HP 70004A color display until the faulty module or
HP 70001A mainframe/HP 70004A color display is isolated. This method involves removal
and reinstallation of rear panel cables .
If none of the elements on the HP-MSIB can communicate , either a module is disrupting the
entire HP-MSIB , the HP 70001A mainframe or HP 70004A color display HP-MSIB circuits are
faulty , or the display element has a faulty HP-MSIB interface and the utility is giving erroneous
results . Use the following steps to further isolate the problem.
1. If an abnormal screen display is present, refer to the HP 70001A Service Guide or
HP 70004A Service Guide and to the appropriate display element service manual for further
troubleshooting and repair information.
2. If ashing error indicators occur , the faulty element or HP 70001A mainframe/HP 70004A
color display may be isolated by using the steps given below .
a. If a module is under test, turn the HP 70001A mainframe or HP 70004A color display
OFF .
b. Remove the element from the HP-MSIB by removing the module or by disconnecting the
HP-MSIB cables from a stand-alone element.
c. Turn the system power o, then on again.
d. If the problem is gone , the element is faulty . Refer to the appropriate service manual or
technical reference manual for further troubleshooting and repair information.
e. If the problem remains , repeat Steps a through d on each module until the faulty element
has been isolated. If none of the elements is faulty , the HP 70001A mainframe or
HP 70004A color display is faulty . Refer to the HP 70001A Service Guide or HP 70004A
Service Guide for further troubleshooting and repair information.
Module Removal Method
This method involves removing one module at a time until the faulty module , HP 70001A
mainframe or HP 70004A color display is isolated. Because it uses ashing error lights to
isolate the problem, this method cannot be used to troubleshoot when the only symptom is an
abnormal screen display .
If the error indicator of only one element ashes at a 1 Hz rate , that element cannot
communicate over the HP-MSIB and is probably faulty .
If the error indicators of more than one module are ashing, either the HP 70001A mainframe
or HP 70004A color display HP-MSIB is faulty or a faulty module is disrupting the entire
HP-MSIB . It is possible for a module to disrupt the entire HP-MSIB without having its error
indicator ash.
Remove the modules that have ashing error indicators one at a time .
If all of the error indicators stop ashing when a module is removed, that module is faulty . F or
additional troubleshooting and repair information, refer to \Repair Procedures".
If no modules appear to be faulty , the problem is with the HP 70001A mainframe or HP 70004A
color display . Refer to the HP 70001A Service Guide or HP 70004A Service Guide for further
troubleshooting and repair information.
F or information on reconnecting the modules after troubleshooting, see the HP 70000 Modular
Spectrum Analyzer Installation and V erication Manual.
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