Symmetricom 5071A Assembly And Service Manual

2. Service
Top-Level Diagnostic Tree (Diagnostic Section 1)
51
QUESTION: What combination of errors are indicated by the code?
(Assembly/module trees are listed in diagnostic-tree section 3.)
- If FATAL ERROR #2, Go to, 1.3.4.
If ONLY FATAL ERROR #9, Go to, 3.1.3.1.0, A2 Mass-spectrometer tree.
If ONLY FATAL ERROR #11, Go to, 3.1.4.1.0, A2 Cesium-oven tree.
If ONLY FATAL ERROR #10, Go to, 3.1.1.1.0, A2 Hot-wire ionizer tree.
If ONLY FATAL ERROR #12, Go to, 1.3.5, Cs oven timeout test.
If ONLY FATAL ERROR #4, Go to, 3.9.1.1, A19 Reference-oscillator tree.
If FATAL ERROR #5, Go to, 2.4.3.0, C-field tree.
If FATAL ERROR #19 or #22, Go to, 1.3.3.
-
NOTE
A non-zero total in the first field of the right-most word indicates that
the 5071A was being steered at the time of shutdown: it has no
diagnostic significance.
Additional diagnostic information may be obtained from any
warnings or messages indicated by data in the error codes. See
1.4.1 and 1.7.1 for more details.
1.3.2 Warm-Up Error Interpretation
1 Locate the most recent error (should be at the end of the log).
2 Record this error.
QUESTION: What is the error?
(All assembly/module trees are in diagnostic tree section 3.)
(RF-chain and C-field trees are in diagnostic tree section 2.)
- If ERROR = Cs oven failed: ion pump overcurrent, Go to, 1.3.2.1.
If ERROR = Cs oven timeout, Go to, 1.3.5.
If ERROR = Osc. oven timeout, Go to, 3.9.1.1, A19 diagnostic tree.
If ERROR = Low Cs signal <#> with max Emult, Go to, 1.3.6.
If ERROR = High Cs signal <#> with min Emult, Go to, 1.3.6.
If ERROR = Cannot set E-mult to avoid saturation, Go to, 1.3.6.
If ERROR = Signal saturated at min E-mult voltage, Go to, 1.3.6.
If ERROR = Beam min/max values not 5% apart, Go to, 1.3.7.
If ERROR = Failed attempts to set Osc. control, Go to, 1.3.7.
If ERROR = Osc. control range error, Go to, 1.3.7.
If ERROR = CBT signal loss Go to, 1.3.7.
If ERROR = Line center not found, Go to, 1.3.7.
If ERROR = VCXO at tuning limit, Go to, 1.3.7.
If ERROR = RF Amplitude range error, Go to, 2.3.1.0.
If ERROR = RF amplitude at range limit, Go to, 2.3.1.0.
If ERROR = E-mult
voltage has changed, Go to, 3.7.1.0.
If ERROR = Failed attempts to set C-field, Go to, 1.3.7.
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Symmetricom 5071A Specifications

General

Brand	Symmetricom
Model	5071A
Category	Measuring Instruments
Language	English