Daktronics VANGUARD VL-3500 Series, Руководство пользователя

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Parts Replacement
22
6. Move the new power supply into place and tighten the screw on the support
bracket.
7. Reconnect all the Mate-n-Lok
®
plugs so that each module will receive power.
Light Sensor Replacement
Tools required :
3
/
16
" nut driver,
1
/
8
" flat
screwdriver, Phillips screwdriver
The light sensor assembly is mounted
inside the bottom left edge of the
cabinet. Refer to Figure 7 for location.
If the light sensor fails, only the circuit
board needs to be replaced. Remove
the bottom left module on the display
to access the light sensor. To replace
a light sensor circuit board as shown in
Figure 17 , follow these steps:
1. Remove the screws that hold the
light sensor to the cabinet.
2. Remove the #4-40 nuts securing the
circuit board to the plate.
3. Remove the standoffs and
attachment screws from the board.
4. Disconnect the four electrical
wires on the sensor by unscrewing
each screw that holds a wire in
place. Note the order the wires
are connected so they can be
reconnected in the same locations
on the replacement.
5. The light sensor plug on the controller does not need to be detached.
6. Reattach the new circuit board, following these steps in reverse.
Note: Align the new circuit board so that the lens lines up with the
1
/
2
" circular
opening in the bottom left edge of the display when the assembly is in
place.
Auxiliary Control Panel (Optional)
The auxiliary control panel (ACP) complements the controller by providing a secondary
control interface panel at the DMS site. The ACP allows a maintenance technician to
perform diagnostics while working in one location without having to access the controller
in another location. This improves safety and reduces maintenance time.
To replace the auxiliary control panel:
1. Turn off the power switch on the ACP face.
2. Label and remove all connections from the ACP.
3. Remove the screws securing the ACP to the inside of the display or equipment
cabinet.
Figure 17: Light Sensor Assembly