Daktronics AF-3020-7.6-R,A - Manual (Page 23)

Section 4 : Maintenance & Troubleshooting
Important Notes:
1. Disconnect power before any repair or maintenance work is done on
the display.
2. Qualified service personnel must make any access to internal display
electronics.
3. The Daktronics product manager’s engineering staff must approve any
changes that may affect the weather tightness of the display. If ANY
modifications are made to the weather tightness of the display, detailed
drawings of the changes MUST BE submitted to our engineering staff
for evaluation and approval or the warranty will be null and void.
4. Care must be taken when handling the display’s face panel to prevent
injuries or damage, especially in windy conditions.
4.1 Weather Stripping
To ensure that the display is waterproof, weather stripping has been provided around the entire
display and around the face panel. It is important that the weather stripping is installed properly at all
times or water may leak into the display and damage the components.
4.2 Display Access/LED Module Removal
To access the display's interior electronic components, complete the following steps:
1. Open the face panel using a 5/32" allen wrench
2. Once the latches are loosened, lift the face panel from the bottom of the display and prop open
with the prop bar located on the ends of the display. The modules will now be accessible.
3. To reach the internal components of the display, loosen the ¼ turns on the top edge of the module
panel and lower the module panel to the full length of the lanyard. The internal components are
now accessible.
4.3 Power Supply
Each sign uses +5 volt DC power supplies. Each power supply can run up to five (5) modules. The
power supplies are each attached to a support bracket that is then secured to a mounting panel in the
rear of the sign (refer to Drawing B-98318). To replace a failed power supply:
1. Open the sign as described in Section 4.2.
2. Using a 3/16" nutdriver, remove the screws securing the power supply-mounting bracket to the
mounting panel. Lift the power supply/bracket assembly from the display.
3. Carefully disconnect all power cables from the power supply. Refer to the project specific
schematic drawing for wiring information.
4. Turn the mounting bracket over to access the two M3x10 mounting screws. Remove the screws to
release the power supply from the bracket.
5. Position the fresh power supply on the mounting bracket and then secure it using M3x10 screws.
6. Connect the appropriate wires according to the project specific schematic.
Maintenance & Troubleshooting 4-1