Daktronics VS-5000 Series, Руководство пользователя

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Maintenance and Troubleshooting
12
Routine/Preventative Maintenance Checklist
Refer to the instructions in each step above. One copy of the following table can be
filled out for each sign.
Sign Location:
Maintenance Item
Monthly
Remote
Diagnostics
1 yr. As Needed Dates Performed and
Initials
Connections are Secure X
Sign Enclosure Inspection X
Structural Inspection X
Photo Sensor Inspection X
Face Panel Cleaning X
LED Cleaning X
Venilation System Inspection X
Internal Hardware Tight X
LED & Electronic Test X
Troubleshooting of the Variable Speed Limit Sign
Contact your local service representative or Daktronics Customer Service at the number
listed on the cover of this manual for further troubleshooting assistance.
Problem Observed Possible Cause Solution
No LEDs will light and the
sign controller will not
communicate with the central
controller.
No power. Check that the sign has power.
Sign controller or modem is
bad.
Refer to Sign Controller
Replacement (p.8) .
No LEDs will light, but
the central controller is
communicating with the sign
controller.
No power at the sign.
Check that the circuit breakers
and power supply in the
traffic cabinet are on and not
tripped.
Sign controller is bad or not
connected to the sign.
Refer to Sign Controller
Replacement (p.8) .
One module is “dead”—no
LEDs will light.
4-pin connector unplugged at
module.
Plug in connector.
Terminal is bad or not fully
seated in 4-pin plug at module,
or wire is bad.
Inspect all wires and terminals
for 4-pin plug. Repair as
needed.
One module is garbled, too
bright, too dim, erratic, etc.
Terminal is bad or not fully
seated in ribbon cable plug at
module, or wire is bad.
Inspect all wires and terminals
for ribbon cable plug. Repair
as needed.