Test and Replace Display Components
16
6 Test and Replace Display Components
Test a Module
Module Status Indicators
Under normal operation, module indicator LEDs
(one on each side on the back of the module)
should ash once every two seconds. Refer to
Figure 25.
When troubleshooting, it is important to know
that the module may take up to eight seconds to
change the pattern.
Perform a Module Self-Test
If a module is blank, but has power supplied to it,
perform a module self-test to diagnose a module
or SATA cable failure. To perform a self-test, follow
the steps below.
1� Attach a SATA cable to Port A and Port B on
the module. Refer to Figure 26.
2� Disconnect the power to the power supply for
10 seconds.
3� Reconnect the power to start the self-test.
4� Verify the module is running a self-test.
Remove the SATA cable and cycle power to the
module to stop the self-test.
Replace Module Power
Supplies
The power supply provides power from the term
panel to the module. For the 5000 series of digital
billboards, the module power supply is located
on the uprights. Each power supply typically controls two
modules.
Replace a Module Power Supply
1� Disconnect the power coming from the term panel to
the power supply.
2� Disconnect the power cable from the power supply
to the modules. Refer to Figure 27.
3� Pull the power supply assembly release tab.
4� Gently lift the power supply assembly off the upright.
5� Pull the power supply tab to release the power supply
from the mounting bracket.
Figure 25: Labeled Module Back
Figure 26: Module Self-Test
Figure 27: Power Supply
Mounted to Upright
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