EBME Forums Forums Maintenance Technical Assistance Zoll defibrillator M Series

Here's one a colleague had which seemed to bamboozle the company. When carrying out PPM on the Zoll it was found the display was the correct way up when on battery power but upside down when switched to mains. Anyone any ideas on this one? We're all stumped. Does the power for the mains and battery come in on different pins on the ribbon cable (a thought I've just had though not sure why that'd make any difference to the display)

Well, that's an interesting one, Jocky.

Which M-Series do you have there? The one with a colour display?

I've had a look at the manual, and notice that the colour display version has a board (connected to the LCD) called "LCD Inverter". Any clue(s) there, I wonder?

Unfortunately the manual I have shows "block diagrams" only.

My only other guess would to be clear (reset) the config settings and see what results.

In passing, I'm wondering what the "Expanded Display Option" is all about.

Good Luck with that one, Mate.

You haven't got the Live & Neutral swapped over have you ? There's one for the Christmas Cracker, sorry couldn't help myself.

Or the fuse in the wrong way around?

Ho, ho, ho.

It's the way you tell 'em, Bill.