547,443 active members*
1,624 visitors online*
Register for free
Login
Results 1 to 7 of 7
  1. #1
    Registered
    Join Date
    Oct 2016
    Posts
    2

    Fanuc 16i Problem 920

    I have a big problem
    The machine is in error attached image and do not know how to solve it.
    I changed the card but the problem persists.

  2. #2
    Registered
    Join Date
    Apr 2009
    Posts
    1240

    Re: Fanuc 16i Problem 920

    What card did you change?

  3. #3
    Registered
    Join Date
    Oct 2016
    Posts
    2
    Quote Originally Posted by memoryman View Post
    What card did you change?
    servo card

  4. #4
    Registered
    Join Date
    Apr 2009
    Posts
    1240

    Re: Fanuc 16i Problem 920

    From Fanuc maintenace manual:
    A watchdog error or RAM parity error occurred in the circuit on an axis control card.
    Alarm 920 indicates that either of the above errors occurred in the control circuit for axes 1 to 4. Alarm 921 indicates that either of the above errors
    occurred in the control circuit for axes 5 to 8.
    The axis control cards, CPU card, or motherboard (main CPU board) may be defective.
    You may have to swap/replace any of: the axis control cards, CPU card, or motherboard (main CPU board).

  5. #5
    Registered
    Join Date
    Apr 2009
    Posts
    12

    Re: Fanuc 16i Problem 920

    It is ok to dismantle the motherboard with worry to erase the machine data and parameters. Is there instruction on how to replace the motherboard and axis card. Thankx

  6. #6
    Registered
    Join Date
    Apr 2009
    Posts
    12
    Quote Originally Posted by memoryman View Post
    From Fanuc maintenace manual:
    A watchdog error or RAM parity error occurred in the circuit on an axis control card.
    Alarm 920 indicates that either of the above errors occurred in the control circuit for axes 1 to 4. Alarm 921 indicates that either of the above errors
    occurred in the control circuit for axes 5 to 8.
    The axis control cards, CPU card, or motherboard (main CPU board) may be defective.
    You may have to swap/replace any of: the axis control cards, CPU card, or motherboard (main CPU board).
    I have also problem with 921 alarm. Do you have instructio on how to replace motherboard and Axis Card. Thankx

  7. #7
    Registered
    Join Date
    Apr 2009
    Posts
    1240

    Re: Fanuc 16i Problem 920

    The maintenance manual has the procedures for replacing boards or modules.

Similar Threads

  1. Fanuc 6 problem
    By rami_429 in forum Fanuc
    Replies: 19
    Last Post: 11-15-2014, 10:34 PM
  2. Fanuc 5M Problem will not run nc or mdi
    By REBCOMACHINE in forum Fanuc
    Replies: 1
    Last Post: 08-24-2010, 03:45 PM
  3. Fanuc 10m problem
    By wayneman in forum Fanuc
    Replies: 0
    Last Post: 02-07-2009, 09:49 PM
  4. Fanuc 6T problem
    By gridley51 in forum Fanuc
    Replies: 1
    Last Post: 01-14-2008, 06:39 PM
  5. Fanuc 21i-T DNC Problem
    By Stebedeff in forum Fanuc
    Replies: 4
    Last Post: 07-16-2007, 09:00 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •