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Unread 27-01-2014, 21:53
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Stuart Stuart is offline
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FRC #1745 (P51- Mustangs)
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Re: RS232 Serial Bridge not working on Firmware 107?

That was it. Pins 2 and 3 on the down line were both not springing back( both Jags had the same issue).

We had to un-solder the rj15 connector from the Jaguar board
then use a straight razor to push the pins back in to place before soldering the connector them back into place.

I will write up a white paper with instructions on how to do this when I get some time towards the end of the season. until then here is a basic instructions on how to fix this.

Temp instructions

Note you are taking a Jaguar apart and using a heat gun to remove parts from the main PCB. PLEASE use correct ESD protection and care to not un-solder or overheat any other component.
  1. Unscrew the 4 philips screws on the back of the Jaguar
  2. Unclip the fan terminal from the fan headers
  3. Separate the internal board from the jaguar housing (be careful of ESD)
  4. On the back of the board the rj15 terminals will have 1 4 pin and 1 6 pin connector. We are focusing on the terminal that has 4 pins (the right one when the terminals are on the bottom with the fan facing up).
  5. Place the Jaguar board in a vice with the back of the board facing towards you.
  6. With a pair of plyers and a heat gun carefully desolder and remove the rj15 terminal (the heat will melt the plastic mounting pins as it removes the solder)
  7. If you look at the bottom of the rj15 connector you will see little slots where each of the spring pins are sitting
  8. Use a straight razor (or other very fine tool) push the spring pins up from the bottom of the connector attempting to get all the spring pins at the same height and springiness (you will have to overshoot to stretch the pins to their correct location)
  9. Use a spare CAN cable to verify the all the spring connectors are making correct contact.
  10. Use a solder sucker and a soldering iron remove the leftover solder from the Jaguar Board.
  11. When mounting the connector back be sure to align it properly with the square on the board. Note: The Jaguar casing has very tight tolerances and a slightly crooked connector will have to be remounted.
  12. Place the repaired connector back in its original mount point.
  13. Solder the connections to the board.
  14. Use a small amount of hot glue to mount the connector to the board (remember you melted the plastic mounting pins).
  15. Place the Jaguar Board on the back Jaguar housing.
  16. Connect power cables to the power side (right) of the board.
  17. Verify the Device light turns on (flashing yellow).
  18. Use a PC set up to communicate with CAN devices and a working Jaguar verify that the repaired Jaguar CAN terminals are functional. the device should report its ID and see a second Jaguar in the device chain.
  19. Remove the Power terminals and CAN Cables.
  20. Connect the Jaguar fan back to the Jaguar Board.
  21. Carefully put the Jaguar top housing back on the Jaguar (you will need to work with it as the tolerances are very tight).
  22. Screw in the 4 philips head screws to the back of the Jaguar.



And again thank you for your help.
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If at first it doesn't work, use a hammer.
If that doesn't work, use a bigger hammer.

Last edited by Stuart : 28-01-2014 at 11:01. Reason: Better detail.