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  • Author Author: phoenixcomm
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NexGen: Hacking the Fuel Load Indicator.

phoenixcomm
Manufacture Part Number Miss
Parker Hannifin 219-100-001
Innovative Solutions 9D-00659-1 SW 7H-659-79419
Manufacture & Part Numbers
Table 1

imageI have had this Fuel Quantity Indicator  (Figure 1) for about 6 months or so. I have been stonewalled by ISI from getting any info. During Cockpit-Fest it was suggested that I cut the unit apart. Well, this unit is solder sealed and I don't have a fire ring.. So out came my Multi-Max (Figure 8) and put a metal blade on it.. well it took about an hour to get it apart and it's not pretty, but the job is done.

Well first by the numbers (see Table 1): Parker Hannifin made the unit. for Innovative Solutions got it and well good luck. In the bottom there is a PGA85 (Pin Grid Array) and I took off the label, and the part is a  5M-00497-1 which is a private label, and a date code of 9416.  More Work!

 

THE ANALYSIS: The unit consists of three (3) boards:

Part Numbers Description
8E-01117 Power Supply Board
8E-01082-18 Logic Board
8E-01081 Display Board
Part Numbers & Descriptions
Table 2
  • The back ie Power Supply (Figure 4): Has an LM-109 5vdc regulator + a bridge and some caps.
  • The middle ie Logic Board (Figure 5): Has a large EE??? part and a MAX690MJA microprocessor supervisor
  • The front ie the Display Board (Figure 6): Has two (2) HDSP-2131TXV  each display has 8 chars 5mm high of 5 x 7 chars each and has a 30 pin head connector.

If I can get the power supply board out of the housing I can tag in 5vdc from an external power supply to power up this unit... image

 

Keep Tuned In More To Come!! image

~~Cris H.

 

UPDATE:    informed me that IC manufactures sometimes put the part number in the silicon.... and he was right..

Our Mystery part is a Motorola MC68HC711  which is a MC68HC11 with a security feature..

 

image image
Fuel Repeater  / Indicator
Figure 1		 Fuel Repeater  / Indicator
Figure 2
image image
Front Half after the cut
Figure 3		 Rear Half after the cut
Figure 4
image image
Logic Card
Figure 5		 HP Smart Display Card
Figure 6
image image
Just Cut on the Line
Figure 7		 Dremel Multi-Max with Steel Blade
Figure 8
Parents

  • Hi Chris,

     

    I am surprised that you could not get data on device.

    I guess they have some proprietary algorithms for calculating fuel use based upon the sensor package.

     

    Were you able to get any data on the sensors?  They might tell you more about what they do in the software.

     

    DAB

  • in reply to DAB

    Sadly quite a few companies have a hard time sharing information, they probably don't have mechanisms in place to get high-level (non-sensitive) engineering data to others : (

    It is maybe harder the older the product is, since people who know what is not sensitive and what is sensitive, have probably moved on.

    I had similar problems a week ago, trying to get just pinout information for a proprietary external connector/interface on a product (i.e. I wasn't even trying to look inside it).

Comment
  • in reply to DAB

    Sadly quite a few companies have a hard time sharing information, they probably don't have mechanisms in place to get high-level (non-sensitive) engineering data to others : (

    It is maybe harder the older the product is, since people who know what is not sensitive and what is sensitive, have probably moved on.

    I had similar problems a week ago, trying to get just pinout information for a proprietary external connector/interface on a product (i.e. I wasn't even trying to look inside it).

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