Daktronics VANGUARD VL-3500 Series, Руководство пользователя

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Diagnostics and Troubleshooting
15
6 Diagnostics and Troubleshooting
Note: Disconnect power when servicing the display. Only qualified service personnel
should service internal electronic components.
Controller Diagnostics
The controller is the brains
of the display, receiving
communication from the
computer and then sending
information to the modules.
The controller is located in the
lower left area of displays as
shown in Figure 7 . LEDs on the
controller show whether the
power and communication
signal are working properly.
To access the interior of the
display, refer to the Accessing
the Internal Components
(p.11) section for instructions
and illustrations. Remember
to disconnect power to the
display before accessing the
interior. However, once the
modules are removed and
wires are found to be safe,
power can be turned back on
to view the diagnostic LEDs.
A controller is illustrated
in Figure 10 with essential
diagnostic LEDs labeled:
• The DS2 RX1 LED displays
the controller’s receiving
status. This LED will flash
only when receiving
information from the
control computer.
• The DS3 TX1 LED signals the
controller’s transmission
status. This LED will flash
only when transmitting
information to the modules.
• The RST DS3 LED signals the controller’s reset status.
• The RUN DS4 LED signifies the controller’s operational status. This LED will flash at a rate
of about once per second to indicate that the controller is functioning properly.
• The LNK DS6 LED signals the controller’s linking status.
Figure 10: Controller Diagnostics