HP 8924E, Assembly

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Chapter 14, Diagnostics Descriptions
Description Of Miscellaneous Diagnostics (MSDIAGS3)
N:\mkt\MANUALS\HP8924C\ALR\diagnos.fb
Description Of Miscellaneous Diagnostics (MSDIAGS3)
Introduction
The Miscellaneous Diagnostics are varied and cannot be run in a loop. In the
following tables of tests, the measurement point refers to
Voltmeter
Connection (DVM)
or
Latch
(Latch) readings on the SERVICE screen.
CYCLE POWER
AFTER THE SELF-
TEST!
The Self-Test diagnostic turns off the CDMA timing clocks when run as part of
the MSDIAGS3 diagnostics. This prevents ALL CDMA-related modules from
operating properly until the clocks are restored. After running the Self-Test, cycle
Test Set power to restore the CDMA clocks.
External Reference Test
Table 129 External Reference Test
Measurement Explanation and Suggestions Measurement Point
Ext Reference
Present Detector This test requires that an external reference signal be
connected to the 10 MHz REF INPUT (rear panel).
The external reference sensor is checked. Latch:refs_ext_ref_sense
Ext Reference
Lock Detector This test requires that an external reference signal be
connected to the 10 MHz REF INPUT (rear panel).
The 10 MHz loop lock sensor is checked. Latch:refs_10MHz_sense
Ext Reference
Lock-out The external reference can be locked out. The exter-
nal reference sensor should not detect a signal if the
lock-out works. Latch:refs_ext_ref_sense