To all you 2008h Pro's
One of my 2008h model locks out sometimes with WD LATE PULSE alarm after power up sequence, and sometimes it doesnt happen at all and works fine, I have checked 24v to the modules and boards during this alarm and theres 0 volts, only 24 to display, with no alarm checks out ok, Checked Power Supply module and Power Logic BD. according to diagrams and schematics it points to i/o watchdog circuit of the Functional Bd. Is it possible that my Functional Bd. could be the problem?
need help on this one.
Thnx.

quote:

Originally posted by F-tech:
To all you 2008h Pro's
One of my 2008h model locks out sometimes with WD LATE PULSE alarm after power up sequence, and sometimes it doesnt happen at all and works fine, I have checked 24v to the modules and boards during this alarm and theres 0 volts, only 24 to display, with no alarm checks out ok, Checked Power Supply module and Power Logic BD. according to diagrams and schematics it points to i/o watchdog circuit of the Functional Bd. Is it possible that my Functional Bd. could be the problem?
need help on this one.
Thnx.

Looks like RL1 on the power control board is not energizing all the time. Try changing the funtion brd. first since thats an easy swap. If it still happens then RL1 could be the culprit.