Rice Lake Remote Displays/Scoreboards - Laser LT - Manual (Page 36)

30 Laser LT Installation and Operation Manual
6.0 Appendix
6.1 Error Messages
The Laser LT remote display provides error messages. When an error occurs, the message is shown on the display.
Table 6-1. Error Messages
Message Cause/Remedy
NO COM No communication with the ports and the device that it’s communicating with
ABORT The Laser LT failed to Auto Learn. See Troubleshooting Section 6.2.
6.2 Troubleshooting
Prior to troubleshooting, it is important to default the Laser LT to the default settings. See Section 2.3.5 on page 10
for instructions on defaulting the unit.
Note
Set the host port to match wiring.
Table 6-2 lists general troubleshooting tips for various error conditions.
Table 6-2. Basic Troubleshooting
Symptom Cause/Remedy
Power No Display on
Power up Not plugged in - Ensure that power is getting to the Laser LT . On power up, the display
should show a display check or weight data.
Blown fuse - Check fuse on power supply board and replace if necessary.
No power to CPU board - Using a voltmeter, check power on J5 of the CPU board (see
Figure 10). Power output should be approximately +7.5V
No heartbeat - Verify that the heartbeat LED is blinking. See Figure 2-8 11 for heartbeat
location.
• Blinking annunciator - normal
• Solid light on annunciator - hardware error
• No light on annunciator - check power source
Check that the NO DATA parameter is set to NO COM (see Table 3-2) for default settings
as no communication can cause a blank display
Communications No Communication Check for port LED blinking. Red is receive, and Green is transmit.
Verify wiring - see Section 2.3.4 on page 9 for wiring information
Verify ports - Verify that the port is set for the Host and the device that it is
communicating with and is connected to the Host port.
Verify streaming - the indicator or other host device should be set to on or off.
Daisy Chain No Echoing Check parameters - verify that parameter Daisy is set to the correct port (see Section 3.3
on page 18)
Verify wiring - Section 2.3.4 on page 9.