The LEDs on my Cobox Micro are blinking randomly. I think there may be something wrong with my unit. Is there a way to check if my Cobox Micro is malfunctioning by looking at the LEDs?

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There are four LEDs on the Cobox Micro that can indicate
whether or not the Cobox Micro is malfunctioning.

The Cobox Micro LEDs are numbered according to the diagram below.

1->O O<-2
3->O O<-4

Refer to the diagram above to match the LED patterns below:

LED-1:
Channel 1 LED-(Green)
Displays the status of channel 1.
If solid, channel 1 is idle.
If blinking (1 sec cycle), the channel is connected over the network.
This LED is also used for diagnostic and error detection when combined
with LED 3(Red), see below.

LED-2:
Network Link LED-(Green):
Indicates network connectivity.

LED-3:
Error and diagnostic LED (Red)
This LED and LED 1 (Green) together indicate a series of diagnostic
patterns:

If the Red LED is on or blinking, the Green LED will give a diagnostics
code. There is a fatal error and the Micro is not working. See below
for error patterns.

RED LED SOLID ON, GREEN LED BLINKING
1x: EPROM checksum error
2x: RAM error
3x: Network controller error
4x: EEPROM checksum error
5x: Duplicated IP address on the network

RED LED BLINKING, GREEN LED BLINKING
4x: The network connection is faulty. This
should only appear after power up. Even though
the Micro is going into operation mode, the
problem will potentially persist.

5x: No DHCP response was received.

LED-4:
Channel 2 LED-(Yellow)
If solid, channel 2 is idle. If blinking (1 sec cycle), the channel is
connected over the network.

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[Originally Published On: 02/06/2001 05:26 AM]