Daktronics 4203 Series, Service Manual

Page: 11 / 37

7
Section 3: Display Troubleshooting
3.1 Display Troubleshooting
The section provides generic guidelines for repairing issues with the 4203 series. Work with
Daktronics help desk or experienced technicians to address display issues.
Issue Issue Image Troubleshooting Steps
Entire display
blank 1. Verify there is power to site by ensuring the
power supply indicators are on. If they are on,
there is power to site and it is most likely a
signal issue. If there is site power, continue to
Step 3 .
2. Verify the ProLink Router (PLR) is receiving
power. If the LED indicator lights are on,
unplug and reestablish power to the PLR.
3. Verify the fiber cables from the Digital Media
Player (DMP) to the PLR are connected.
4. Call Daktronics help desk at 1-605-697-4000
and have them verify the content that was
supposed to play was successfully uploaded
and sent to the display.
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. 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.
3. 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.
4. Verify the PLR has power and is functioning.
Disconnect and reconnect power to the PLR.
5. 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.
6. Check that the contactors in each display
section are closed which means that section
should be receiving power.
Display Troubleshooting