Advanced Control Equipment ACE
TM
ACE™
Troubleshooting
©
2001 ADB Airfield Solutions, LLC
96A0245D
Page 19
All rights reserved
Issued 5/01
In the unlikely event that an ACE™ unit is determined to be
malfunctioning, the following guide will help to diagnose the
problem and provide a solution to quickly get the unit
functioning properly. Before beginning, remember improper or
incorrect wiring is the cause of most problems. So, first check
all wiring for lose connections or possible electrical
shorts/opens.
Problem
Possible Solution
ACE™ Front Panel Status LED not
illuminated
Make sure the main power LEDs on the input/output printed circuit
board are illuminated. If these LEDs are not illuminated then
power to the ACE™ is not being supplied. Make sure the ACE™
Power supply printed circuit board (Figure 10) is receiving 120VAC
at the main power quick disconnect terminal block. Make sure that
all wire connections are secure.
If the main power LEDs on the input/output printed circuit board
are illuminated, make sure the ribbon cable that connects the front
panel display to the ACE™ processor board is secure.
The ACE™ design allows for additional printed circuit boards to be
added to the basic system. Due to the nature of how the additional
boards are connected to the existing boards it is necessary to make
sure that the additional printed circuit boards are seated in their
connector.
ALCS reporting failed communication
with a specific ACE™
Check for power indication. If all of the boards have power, refer to
the Processor board LED description table (Table 1) for normal
operation of each of the LEDs: If any of the LEDs are not
functioning as described in the table, cycle ACE™ power and
recheck. If problem still occurs contact your Siemens Airfield
Solutions service representative.
Channel A LED not Flashing
Cycle power to the ACE™ unit. If the problem still persists turn off
the power to the ACE™ and inspect all wires and wire terminations
for loose or degrading wire. Check the continuity of the wire
connecting the defective ACE™ and the next device in the ACE™
network. If the problem still persists contact your Siemens Airfield
Solutions service representative.
Channel B LED not Flashing
Cycle power to the ACE™ unit. If the problem still persists turn off
the power to the ACE™ and inspect all wires and wire terminations
for loose or degrading wire. Check the continuity of the wire
connecting the defective ACE™ and the next device in the ACE™
network. If the problem still persists contact your Siemens Airfield
Solutions service representative.
Either of the Internal Processor Board
Diagnostic LEDs is frozen on or off.
If either of the LEDs is frozen, cycle the power to the ACE™. If
the problem still persists contact your Siemens Airfield Solutions
service representative
Lamps out board LED not flashing
Make sure the power LED, on the lamps out board, is on. If it is not,
turn the power to the ACE™ off. Check the integrity of the header
connection on the lamps out board. Turn the power to the ACE™
on. If the problem still persists contact you Siemens Airfield
Solutions service representative.
5. ACE™ Troubleshooting
