Daktronics AB-1600-1.5,2.5 - Manual (Page 41)

Maintenance & Troubleshooting
4-5
4. With the latch released, pull the module slightly away (about a half-inch) from the display.
This will prevent it from re-latching. Refer to Drawing A-99899. Use care to avoid bending
the louvers.
5. Repeat this procedure on the other side of the module.
6. With both sides unlatched, the module should pull away from the display far enough so the
signal and power harness can disconnect from the lampbank. When the signal and power
harnesses are removed, the module can be removed from the display.
q q q q Note: You may use a 3 /
16
l slotted screwdriver in place of the access tool (Daktronics part
number TH-1050).
Front Accessible Displays – Replacing a Module
To reinstall a module in the display:
1. Reconnect power and signal connections to the lampbank.
2. Tilt the module about 30 degrees and place the bottom corners of the side brackets to the
inside of the frame verticals.
3. Push the lens assembly firmly back into place until the latches snap into place and the lens
assembly secures to the display. It may be necessary to use a solid object, such as a short
length of two-by-four, to properly seat the assembly.
• = Place the two-by-four across the louvers so the pressure on them distributes evenly and
strike the board with the heel of your hand. This should drive the assembly in place.
4. Pull firmly on the assembly to ensure that it is fully in place and secured to the display. The
lens assemblies must fit together tightly enough so the weather stripping forms a seal and
prevents water from leaking between the lens assemblies and into the display. Check the seal
between the assemblies with a 0.032” feeler gauge. Refer to Section 4.17.
5. Snap the lenses back into the faceplate of the lens assembly. Failure to properly replace a lens
is quite noticeable. The lens removal tab or the lens itself will not be in alignment with the
other lenses or lens tabs. Refer to Drawing A-75204.
6. Ensure that the rows of louvers on the lens assembly are in proper alignment.
Rear Accessible Displays – Removing Back Sheets
Rear accessible displays require back sheets be removed from the rear of the display in order to
reach the internal display components.
Figure 42: Removing a Module