Integrator's Manual

107
8 COM1000 DIAGNOSTIC CAPABILITIES
When it comes to troubleshooting your COM1000 system, the COM24 card has a few built-in
mechanisms that can assist you. Each of these can be very helpful in diagnosing general issues
associated with system status and card connections that will be covered in the following sections.
8.1 Indicator lights
The three indicator lights on each COM24 faceplate have multiple functionalities. In addition to
providing a manual toggling ability by utilizing the LED controls on the Tune page (as described
in Section 6.8.4), the lights also exhibit a set of predefined behaviors for several conditions.
In recognizing the behaviors associated with the three indicator lights, you must first familiarize
yourself with the five possible LED states. Table 3 below names and describes them, and
provides a color by which the states will be defined in the following sections.
Table 3 – LED States
On
The LED emits a steady green light.
Off
The LED is not lit at all.
Flash
The LED exhibits an on-off pattern once a second.
Slow Flash
The LED exhibits an on-off pattern once every two seconds.
Rapid Flash
The LED exhibits an on-off pattern multiple times a second.
8.1.1 Power Supply Issues
Unless a COM24 card has intentionally been removed from the COM200 chassis, the “PWR”
light on every card in the system should be lit. If none of the COM24 LEDs on a chassis are lit,
the power supply has likely been disrupted. Check for the following:
 The AC cords on each module are completely attached and plugged in.
 Both modules are locked in place.
 The power supply fans are running.
If the above conditions have all been met and you still do not see any LEDs lit, there is probably
an issue with your system. There have been instances observed where a system will experience a