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A.
ALM Unit
ON
MAINT
OFF
CPU
UNUSED
MAINT
SOURCE
I"'
-
~
l
1
TST9
l
uu~
ISS 3, NECA 365-407-301
CPU, red LEO:
Indicates ALM unit CPU failure when lit.
UNUSED amber LED:
Indicates TST switch is ON when lit.
iviAii'iT, red LED:
Indicates MAINT switch is ON when lit.
SOURCE, green LEO:
Indicates presence of DC primary power when lit.
MAl NT, two position toggle switch:
Enables manual control switching (manual switch
and remote ioopback switchi.
TST, momentary-action pushbutton switch:
lights all equipment LED (except ALM unit
SOURCE LED and PWR unit PWR ON LED),
when depressed.
N 50052
Figure 3-2 ALM Unit (OAOO) Controls and Indicators (Sheet 1 of 2)
Page 5
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