Owner’s Manual 25
Wanco® Metro™ Message Sign
7. Use the controller to access the display module diagnostics, then initialize the message
sign and start a new self-test. After initialization is complete:
■ If the functioning module is not working, then the problem is with the wiring.
Contact the factory for assistance (see Section 1.4, “Where to obtain service,”
page 2).
■ If the malfunctioning module is not working in its new position, the problem is
with the module, not the wiring. Replace it as described below.
8. To replace the malfunctioning display module:
a. Use the controller to “blank” the message sign.
b. Disconnect the wiring from the malfunctioning display module and remove the
module from the display cabinet.
c. Set the malfunctioning display module aside.
d. Reverse the procedure to install a new, replacement display module.
9. Use the controller to access the display module diagnostics, then initialize the message
sign and start a new self-test.
10. After initialization is complete, use the controller to put a test message on the sign, and
ensure the sign is working as expected.
11. When done, close and latch the display cabinet door.
5.2.2 Power board alarm
A power board alarm indicates the sign’s computer is not communicating with the
power control system. The cause may be a bad connection, or a failed power board or
main control board.
When a power board alarm occurs:
1. Follow the safety requirements in Section 2, page 3.
2. Check wiring connections to ensure they are proper and secure (see Figure 5-1). If a
problem with the connection or cable is obvious, replace the cable; otherwise, unplug
each connector and plug it back in.
3. Check the controller for alarms or status.
4. If the problem persists, contact the factory (see Section 1.4, “Where to obtain service,”
page 2).
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