Daktronics Fuelight FL-2109 Series Petroleum Price Displays - Manual (Page 30)

24 Maintenance and Troubleshooting
6.2 Display Diagnostics
Driver Diagnostic LEDs
The driver has five LEDs that indicate whether it is
functioning properly. Refer to Figure 16 for their locations.
These LEDs can help pinpoint problems with the driver
set-up or operation.
LED Name Function Label Indication
DS1 Power POWER
On constantly when
operating correctly.
DS2 Status STATUS
Blinking when driver
is operating
correctly.
On when
microcontroller is not
working.
Off when
microcontroller is not
working.
DS3 Transmit TX
Flickers when
transmitting data.
DS4 Receive RX
Flickers when
receiving data.
DS5
RC-50
Receive
RC-50
RX
Flickers when
receiving data from
the RC-50
transmitter (FLR-100
control kit).
Off when not
receiving data.
Power-up Self Test
A useful troubleshooting tool is the power on self-test performed by the host driver every
time the display powers up. The display should show the information listed in the left
column. Sign (X) and Line (Y) numbers refer to the rotary switch settings for the specific
display.
Information Shown on Display Meaning of Information
rNN Revision Number of the Software
XLY X = Sign #, L is Constant, Y = Line #
123 9/10 Digit Layout, if connected properly
Figure 16: Driver Diagnostic LEDs