Daktronics 4200 Series Digital Billboard - Manual (Page 12)

8
Blank display
section 1. If applicable, verify the fiber interconnects are
installed.
2. On a new installation with multiple power
entrances, verify power was run to that
section.
3. On displays with multiple power entrances,
verify the power interconnect cables between
the display sections are connected.
4. Check the modules at the beginning and
end of the affected area. This issue can be
caused by disconnected or bad SATA cables
on both of those modules. If the module power
indicator is on, there is most likely a SATA
cable issue. If the module power indicator light
is off, there is most likely a module issue.
5. Measure site power and verify it meets the
requirements listed on the system riser. If
this issue appears when there is white or
light content, it is possible there is insufficient
power to the display. If this is the case, work
with an electrician to establish the correct site
power.
6. Verify the PLR has power and is functioning.
Disconnect and reconnect power to the PLR.
7. Verify there is power to that display section by
checking module status indicators on multiple
modules. If there is no power, check the
breakers on that sections term panel.
8. Check that the contactors in each display
section are closed which means that section
should be receiving power.
Content switched
between display
sections 1. Check the signal interconnect cables between
the display sections because they may be
switched. Port A should be connected to Port
A. Port B should be connected to Port B.
2. Check the fiber cables coming from the DMP
because they may be switched.
Scattered or out
of order content 1. The SATA cable and redundant SATA
cable from the PLR to the modules may be
switched.
2. Call Daktronics help desk to verify the
translation table is correct.
Display Troubleshooting