Advanced Control Equipment (ACE2)
96A0357 Rev. F
Troubleshooting
© ADB Airfield Solutions All Rights Reserved
30
2.4 Troubleshooting
This section contains troubleshooting information. The information covers only the most
common problems. If a solution to the problem is not found with the information given here,
contact the local ADB Airfield Solutions representative for help.
2.4.1 Troubleshooting
Procedures
Troubleshooting procedures for the Advanced Control Equipment (ACE2) are in this section.
NOTE:
Before beginning, remember that improper or incorrect wiring is the cause of most
problems. Check all the wiring for loose connections or possible electrical shorts/opens.
Table 4:
Troubleshooting Chart
Problem
Possible Cause
Corrective Action
1. ACE2 Front
Panel Status
LCD is not
illuminated.
No power
ACE2 ribbon cable
not secure
Backlight Power not
correctly hooked up.
Make sure the main power LED on the main printed
circuit board is illuminated. If this LED is not
illuminated then power to the ACE2 is not being
supplied. Make sure the ACE2 Main printed circuit
board (refer to Figure 4) is receiving 120 VAC at the
main power, quick disconnect, terminal block. Make
sure all wire connections are secure. Make sure the
ACE2 Main Printed circuit board On/Off switch is On.
If the main power LED on the input/output printed
circuit board is illuminated, make sure the ribbon
cable that connects the front panel display to the
ACE2 processor board is secure.
Make sure the connection for the LCD backlight
power is connected. (refer to Figure 24)
2. Either of the
Internal
Processor Board
Diagnostic LEDs
is frozen On or
Off.
Board not seating
properly
No power
Reseat the PC board.
Cycle the power to the ACE2. If the problem still
persists, contact the ADB Airfield Solutions service
representative.
3. Lamps out board
LEDs are not
flashing.
No power
Board not seated
properly
Make sure the power LED on the lamps out board is
on. If it is not on, turn the power to the ACE2 off.
Check the integrity of the header connection on the
lamps out board. Turn the power to the ACE2 on. If
the problem still persists, contact the
ADB Airfield Solutions service representative.
Reseat the PC board.
4. ACE2 front panel
displays COM A
Failure and COM
B Failure.
Incorrect ACE type
in a Stand Alone
installation
Loose
Communications
connection with
other ACE2 units.
The ACE has been configured to communicate with
a host system. Contact ADB Airfield Solutions for
further assistance.
Check both sides of the communications wiring
make sure it is securely plugged into both the other
devices.
5. Modified
CONFIG data is
not being saved.
Loose connection
on Main Board with
Non-Volatile
Memory.
Turn off power to ACE2 and open enclosure. Check
Non-Volatile memory at U6. (Figure 24) Check to
make sure it is secure.
6. No IRMS version
number is
displayed.
IRMS board not
connected via fiber
optic cable
No power.
Connect IRMS board via fiber optic cable to the
ACE2.
Connect power to IRMS board.
