Daktronics AB-1600-1.5,2.5 - Manual (Page 40)

Maintenance & Troubleshooting 4-4
This incoming air forces warm air already in the cabinet to exit through the lenses on the face of
the display. Each lens has an exhaust port near the top to allow for airflow. Before the air exists
through the lenses, it passes past the lamps, cooling them in the process. This maximizes the life
of the lamps.
Refer to Section 4.12 for troubleshooting information for the internal temperature monitoring
system.
4.3 Accessing the Inside of the Display
Reference Drawings:
Correct Lens Position, 1 1/2” ................................................................. Drawing A-75204
Lens Removal, Front Access................................................................. Drawing A-99898
Lens Assy Removal, Front..................................................................... Drawing A-99899
Series 1600 large matrix displays are either front or rear accessible, depending on site requirements
and customer preference.
Front Accessible Displays – Removing a Module
For many maintenance or repair procedures, the first step is to remove a module. Each 8x16 lens
assembly secures to the frame by two spring-loaded latches, one on each side. Follow these
instructions for access to these latches:
1. Remove the lens from row 4, column
1, and the lens from row 4, column 16
of the lens assembly. Refer to
Drawing A-99898.
2. Place the front access tool, 0M-95442,
into the latch access hole. The angled
edge of the tool should be down so it
wedges the latch pin down as it pushes
further into the access hole. Refer to
Figure 41.
3. When the front access tool inserts
fully, the module latches should
release. Refer to Figure 42, below.
Figure 41: Lampbank and Lens/Reflector Assy