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Ultegra Di2 Front Derailleur not going into adjustment mode

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  • April 14, 2014 at 10:15 am #21170
    Cyclosis

    Hi Folks,

    Wonder if anyone can help me, or has had a similar problem.

    I have a 6870 front derailleur that doesn’t want to go into micro adjustment mode, when I click either of the left shifters (having pushed the button on junction A) it doesn’t micro adjust, the red light just flashes on the junction box.

    I can’t find any thing in the documentation, nor anywhere on the web, about the junction light flashing or an error or anything.

    Otherwise it all works and shifts fine. Strange! It also had been micro adjusting fine up until yesterday too.

    Anyone had any similar problems?

    Cheers,

    Jim

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Viewing 7 replies - 1 through 7 (of 7 total)
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  • March 26, 2020 at 8:13 am #786539
    0
    Diesel Engine

    This was really helpful

    This was really helpful thanks, I had the same issue and hadn’t realised it had to be specific positions.

    August 29, 2016 at 7:59 am #786537
    0
    M3IT

    I know this page is old, but

    I know this page is old, but it was one of very few hits from a search about this problem, so I thought I’d post the solution (that I found by finally RTFMing) in case it helps someone else.

    For Di2 front deraileur microadjustment, the adjustment entry mode (entered by holding the button on the junction box), has to be entered with the chain on both big cogs – both front and back.  Refer diagram from page 57 of the manual.

    April 15, 2014 at 8:05 pm #786535
    0
    wellcoordinated

    The battery needs charging?
    The battery needs charging? When the battery gets depleted only the rear derailleur works.

    April 15, 2014 at 7:54 am #786533
    0
    Cyclosis

    Ah! That Tri forum one is a
    Ah! That Tri forum one is a helpful link, thanks! I’ll see if any of the advice there helps.

    Cheers!

    April 14, 2014 at 3:50 pm #786531
    0
    movingtarget

    Don’t know if you’ve already
    Don’t know if you’ve already come across this but someone on one of the tri forums had probs getting his FD to micro adjust too. The OP didn’t follow up so don’t know how things turned out but they referred him to pages 57-58 in the Shimano manual for doing micro adjustments.

    http://si.shimano.com/php/download.php?file=pdf/dm/DM-UL0001-00-ENG.pdf

    Here’s the tri forum thread too if that helps

    http://www.forum.slowtwitch.com/forum/Slowtwitch_Forums_C1/Triathlon_Forum_F1/Ultegra_6870_Di2_Front_Derailleur_problem…_P5009551/

    April 14, 2014 at 1:56 pm #786529
    0
    Cyclosis

    Hi Dave,
    Thanks for the
    Hi Dave,

    Thanks for the reply, but that video is for the 6700. I’m using the newer 6800 which does have electronic adjustment.

    It was working fine until yesterday, now all I get is the flashing red light, which isn’t mentioned in any of the documentation.

    Jim

    April 14, 2014 at 10:46 am #786527
    0
    dave atkinson

    All of the front derailleur
    All of the front derailleur adjustments are mechanical, using the limit screws on the body of the unit.

    Here’s a helpful vid:

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