User Manual

Table Of Contents
maintenance 523-0809018
Figure 4-7. TSS-4100 Front Panel LEDs
Table 4-3. LED Descriptions
Indicator Color Description
LRU STATUS indicator will light green whenever the self-test is successful. The LRU
STATUS indicator will light red whenever the self-test fails.
LRU STATUS RED/GREEN
If this is red, it is probable that the TSS will need to be replaced. See the maintenance
words for more information on this.
UPPER ANT FAIL indicator will light red whenever the impedance of the upper
antenna does not meet specication.
UPPER ANT FAIL RED
If this is lit the cabling from the TSS to the upper antenna needs to b e checked.
LOWER ANT FAIL indicator will light red whenever the impedance of the l ower
antenna does not meet specication.
LOWER ANT
FAIL
RED
If this is lit the cabling from the TSS to the lower antenna needs to be checked.
CONTROL INPUT indicator will light whenever a fault with the control panel is
detected.
CONTROL I NPUT RED
If this is lit the conn ection between the TSS and the selected control p anel needs to
be checked. Alternately, check the control panel selection discretes and verify they
are correctly being set.
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