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Date: Tue, 04 Dec 2012 14:33:20 -0500
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From: "Dr. Weinsweig" <weinsweigd@tsnci.com>
Subject: Re: [LML] Chelton Sport Advice
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I had a similar problem with one of my screens over a year ago after =
trying to update the software(sent to me from cobahm vis email).  nyway =
the screen went blank.  Had to send it back to cobham and for a not so =
small fee they reprogarmmed it.  works fine now.

David
N750DW propjet

>>> jbarrett@carbinge.com 11/30/2012 11:05 AM >>>
The situation:

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MFD #1 of 2 when turned on goes through the BIOS boot and then returns a
blinking cursor.  Multiple reboots produces the same result (pushing both
knobs at same time for a few seconds).  MFD #2 boots right to Chelton =
Flight
Systems screen.

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The scenario and events leading to the situation:

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I have a Crossbow 500 AHRS that quit giving attitude reference about the
last 15 hours of flight time.  I have two brand new Chelton units that =
have
never come out of the box.  They are 2006 or 2007 vintage.  I have a brand
new Poinpoint GADAHRS  with MSU and GPS antenna also never out of box and
same  vintage. =20

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My plan has been to replace the Cheltons and install the Poinpoint =
equipment
at the same time.  I was told that I could swap out the Cheltons but =
should
first pull off the "limits.txt" file using a smart media card in the #1 =
PFD.

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I first removed the Crossbow 500 ( unplugged it) and then remembered to =
get
that limits file.  Booting up the #1 PFD resulted in the problem in the
first paragragh.  Mutliple tries with the card in or out did not improve =
the
result.  Then I plugged the Crossbow AHRS back in to see if that would =
help.
No improvement.  I can't think of another trick to get beyond this and I  =
am
wondering if any of the steps I did could have brought this on.

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To be very clear, no matter how I boot up (with or without the memory card
and by turning the unit on or by pushing the two knobs) I get the same
result.  Once the BIOS testing is done the screen goes to a blank with a
blinking white cursor on the left side.

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Any help or advice on how to get the limits.txt file appreciated. =20

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Thanks in advance.

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Regards,

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John Barrett, CEO

Leading Edge Composites

PO Box 428

Port Hadlock, WA 98339

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www.carbinge.com=20

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