Owner’s Manual 31
Wanco® Metro™ Message Sign
5.4 Message display
Before troubleshooting display problems, use the controller to check for alarms. If you
resolve the issue that caused an alarm, you may also resolve problems with the display.
To troubleshoot alarms, see Section 5.2, page 23. After troubleshooting alarms, use the
following tables to troubleshoot the display.
■ Table 5-4, “Troubleshooting a blank display”
■ Table 5-5, “Troubleshooting messages that appear or disappear unexpectedly”
■ Table 5-6, “Troubleshooting partial messages and duplicate characters,” on page 32
■ Table 5-7, “Troubleshooting stuck LEDs,” on page 32
■ Table 5-8, “Troubleshooting LED brightness problems,” on page 32
Table 5-4. Troubleshooting a blank display
Possible cause Description Solution
Program schedule A programmed schedule may have
“blanked” the display
Use the controller to determine whether a schedule is
active or has recently ended; deactivate the schedule
if appropriate
User control A user may have directly or remotely
“blanked” the display
Use the controller to put a message on the sign
Spaces in message Displayed message may be all spaces Use the controller to replace the current message
Bad cables or connections Display cable connections may be
loose, damaged, or corroded
Check cable connections at the computer box inside
the battery box, and at the main terminals inside the
display cabinet (see Section 5.3, page 30), to ensure
they are proper and secure. Check cables for wear and
damage. Replace cables if necessary.
Periodic self-test is running Sign may be performing a periodic
self-test
Message should reactivate automatically within a few
minutes
Table 5-5. Troubleshooting messages that appear or disappear unexpectedly
Possible cause Description Solution
Control by auxiliary device Message may be controlled by radar
or other auxiliary device
Use the controller to access the auxiliary equipment
configuration and turn off the device, then check
whether the message sign behaves as expected
Program schedule A programmed schedule may have
“blanked” the display
Use the controller to determine whether a schedule is
active or has recently ended; deactivate the schedule
if appropriate
Remote-control by user Message may be controller by
remote-control software
Determine whether a remote user is controlling the
sign; if necessary, disconnect modem (located inside
battery box)
Periodic self-test is running Sign may be performing a periodic
self-test
Message should reactivate automatically within a few
minutes
To Next Page
Loading...