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Page Title:
Table 6-2. Troubleshooting Symptoms (Cont) |
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 T.O. 31W2-2GSC24-2
TM 11-5805-688-14-1
NAVELEX 0967-LP-545-3010
Table 6-2. Troubleshooting Symptoms (Cont)
SYMPTOM
PROBABLE CAUSE
CORRECTIVE ACTION
Out-of-Tolerance Indications
OUT OF TOL indicator
a. Input data rates out
Correct data source.
lighted and multiple-
of tolerance.
channel numbers appear-
ing in FAULT LOCATION
b. Reference timing
Calibrate reference
display; equipment
oscillator out of
timer card.
previously operating
normally.
c.
Defective reference
Replace card.
timer card.
OUT OF TOL indicator
a. Defective channel card.
Replace card.
lighted and a single-
channel number appear-
b. Defective gated clock/Replace card.
ing in FAULT LOCATION
data mux card.
display; source is
within tolerance.
OUT OF TOL indicator
Improper strapping of
Correct card strapping.
lighted and multiple-
sequencer card.
channel numbers appear-
ing in FAULT LOCATION
display immediately
following equipment
reconfiguration.
Card Error Indications
Demultiplexer channel
Shorted output cable.
Replace or repair
card error not
cable.
correctable by card
replacement.
Any card error not
Signal short on card(s)
Sequentially replace
correctable by card
being driven by indi-
driven cards until
replacement.
cated card.
error is removed.
Multiple demultiplexer
Defective error rate
Replace card.
channel card errors
detector/remote alarms
not correctable by
card.
card replacement
(digital only).
6-7
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