D
ATA
M
AXX
the Main module has power by confirming that, sooner or later, the green LED blinks.
If you’re sure that your Main module has power, and the temporary removal of power did not clear up
the problem, then you probably have a problem with your Main module. Contact Computech technical
service for more information.
A
MODULE
’
S
RED
LED
IS
BLINKING
First, refer to the modules blinking light section at the beginning of the manual.
Second, note that it’s OK for the red LED to blink every once in a while. It’s only really a problem if
the red LED blinks continuously. If you see a red blink every once in a while, but your data looks fine
on the PC, then don’t worry about it. (The most likely time to get spurious red blinks is immediately
after recording. The module with the SD Memory Card does some housekeeping at this time. During
the housekeeping interval, some of the other modules may get anxious about sending data. They may
blink their red LED a few times because of this. Once the housekeeping is complete, however, the red
blinking goes away and everything is fine again. If you have an LCD Module, you may see the
equivalent response on the LCD message area. It may say “CAN bus fail” for a moment after
recording. This can be ignored if it doesn’t persist and if your data looks fine on the PC.)
If you get a red blinking LED frequently, or if you get error messages on the PC when you open a log
file, then contact Computech customer support.
“CAN
BUS
FAIL
”
MESSAGE
ON
LCD
You may from time to time get a “CAN bus fail” message on your LCD. It’s only really a problem if
you get this message almost continuously. If you see the message every once in a while, but your data
looks fine on the PC, then don’t worry about it. (The most likely time to get spurious “CAN bus fail”
messages is immediately after recording. The module with the SD Memory Card does some
housekeeping at this time. During the housekeeping interval, some of the other modules may get
anxious about sending data. They may blink their red LED a few times because of this. Once the
housekeeping is complete, however, the red blinking goes away and everything is fine again. You may
also notice that one of the modules blinks its red LED at this time as well. That’s the same indication,
and that’s most likely the module sending the failure message to the LCD. This can be ignored if it
doesn’t persist and if your data looks fine on the PC.)
Otherwise, if you get the “CAN bus fail” message frequently, and not associated with the end of
recording, or if you get error messages on the PC when you open a log file, then contact Computech
customer support.
Copyright c 2008 Computech Systems Inc. 45