EST LSS4 - Page 98

Maintenanc
e
&
Troubleshooting
Table
5-1:
System
Troubleshooting
Condition
LE
donot
illuminate
during
lamp
momentarily
Possible
Cause
1.
Module
address
not
entered
test.
2.
Power/Data
cable
loose.
in
ZEXPDC
4NAC
LEDsdonot
momentarily
i\1uminate
during
lamp
test.
RMOD
LEDsdonot
momentarily
illuminate
during
lamp
test.
LSSPS
Amber
troubleLED
5.2
memo
3. NO
address
jumpers
installed.
3.
Faulty
microprocessor
card.
1
Module
addressnot
enteredin
memory.
2.
Power/Data
cable
loose.
3. No
address
jumpers
installed.
4.
Faulty
microprocessor
card.
1.
Module
in
stand
alone
mode,
i.e. not
communicating
with
LSS4
master
panel.
1.
Ground
Fault
2.
Aux.
power
circuit
breakerCB1
(bottom
board)
3. AC
failureor
Brownout.
4.
Battery/battery
fuse
failure.
To
insure
thatthe
LSS4can
powerthe
panel
when
primary
power
is
lost,
the
batteries
shouldbe
periodicallyinspected,
tested,and
replaced(asa
minimum)
every
threeyears.
ce ' ”
+BAT-
Figure5-1:
LSS4
Master
Power
Supply
(rear
board)
LSS4
Installation,
Operation,-
.Maintenance
Manual