SLSC-12001 Chassis Getting Started Guide and Specifications
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© National Instruments
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21
Troubleshooting
Understanding LED Indicators
The SLSC-12001 has three LEDs on the front panel. The significance of the LEDs is described
in Table 2.
Network Communication Troubleshooting
Multiple problems may result in network communication issues during setup.
Things to try:
•
Ensure the chassis is connected to a working 24 VDC power source.
•
If the STATUS LED is off, there may be a short circuit. Refer to the
Module Short Circuit
Behavior
section for more information.
•
If the STATUS LED is green, but the ACTIVITY LED is off, try the following:
–
Verify the Ethernet cable is connected properly.
–
If communication is routed through a switch, verify that the switch is powered on and
functioning.
–
Verify that your network has a DHCP server or that the chassis is connected to the host
system using a crossover cable.
–
Verify that the host computer firewall is disabled.
–
Verify that the host computer is not configured to use a proxy server.
Table 2.
Troubleshooting Using LED Indicators
LED Type
LED Indicator
S
tatus
POWER
Off
No power or short circuit on +3.3 V rail causing failure to
power on.
Green
Power is on.
ACTIVITY
Blinking green
Ethernet communication in progress.
Off
No Ethernet communication.
STATUS
Red
Less than 3 seconds: chassis is starting to boot.
Reset button is pressed.
More than 3 seconds after boot start: chassis failed to
boot. This could be due to corrupt firmware, incorrect
power input, fan failure, or other hardware issues.
Amber
Chassis is booting.
Green
Normal operation.
