Daktronics BLD Series, Service Manual

Page: 20 / 34

Test and Replace Display Components
16
Note: It is possible to have a break in just one path. So for example, it is possible all of
the modules may turn Yellow indicating “A” is healthy, but only some of them
turn Magenta indicating a break in the “B” path that needs to be repaired.
Replace a ProLink Router
Required Tools: Phillips screwdriver
1� Access the interior of the display by following the steps provided in Section 4: Access
Internal Components (p�9) .
2� Disconnect the PLR SATA and power cables.
3� Use a Phillips screwdriver to loosen the PLR assembly set screw.
4� Lift the PLR assembly to disengage it from the display.
5� Reverse Steps 2–4 to install the new PLR.
6� Verify the cables are properly seated.
Replace PLR Power Supplies
1� Disconnect the power supply from any wiring
harnesses connected to it.
2� Push down on the top leg of the wire form bracket
and rotate the power supply clockwise. Refer to
Figure 27 .
3� Carefully pull the power supply outward.
4� Secure the new power supply in the bracket.
5� Rotate the bracket back into place inside the
cabinet.
6� Reconnect the wiring harnesses disconnected in
Step 1 .
Replace a Display Fan
Required Tools: Side cutter, cable ties
If needed, remove the fan plenum following the
steps in Remove Fan Plenum (p�11)�
1� Locate and disconnect the 3-pin Mate-N-Lok
connector.
2� Push in on the sides of the finger guard and
rotate it to remove the fan. Refer to Figure 28 .
3� Cut the cable tie holding the harness to the
plenum.
4� Remove the fan from the display.
5� Reverse Steps 1–4 to install the new fan.
6� Attach harness to the fan plenum using a cable tie. Refer to Figure 28 .
Figure 27: PLR Power Supply
Mounting
Figure 28: Display Fan