Thanks Thanks:  0
Likes Likes:  0
Dislikes Dislikes:  0
Page 1 of 2 12 LastLast
Results 1 to 10 of 12
  1. #1
    Senior Tech 100+ Posts
    Join Date
    Jun 2012
    Posts
    135
    Rep Power
    0

    Canon I-sensys MF8540CDn - calibration problems

    Hello.

    I have calibration problems with customer Canon I-sensys MF8540CDn.

    I tried:
    - variety of new toners (compatible)
    - changed intermediate transfer belt ASS'Y (RM1-4852), older one
    - changed DC CONTROLLER PCB ASS'Y (FM0-4754), older one
    - changed LASER SCANNER ASS'Y (FM4-3359), older one
    but still some colors are displacement.

    What to do? Do you have some ideas what next to change? (I have one older machine and this machine I used for spare parts).

    My idea what to change next is... (but what is your idea ). I want to change next these spare parts in this order:
    1.) MAIN DRIVE ASS'Y RM1-8042
    2.) COLOR MISREGIST. SENSOR ASS'Y (RM1-4850)
    3.) H. V. POWER SUPPLY PCB ASS'Y (RM1-5294-050)
    4.) MAIN CONTROLLER PCB ASSEMBLY (formater, FM0-4672)

    Where do you think can be probably still problem (maybe in other spare parts that I do not named here)?
    Please help

  2. #2
    Service Manager 5,000+ Posts
    Canon I-sensys MF8540CDn - calibration problems

    Phil B.'s Avatar
    Join Date
    Jul 2016
    Location
    Raleigh NC
    Posts
    5,649
    Rep Power
    103

    Re: Canon I-sensys MF8540CDn - calibration problems

    Quote Originally Posted by spree View Post
    Hello. I have calibration problems with customer Canon I-sensys MF8540CDn.
    I tried:
    - variety of new toners (compatible)
    - changed intermediate transfer belt ASS'Y (RM1-4852), older one
    - changed DC CONTROLLER PCB ASS'Y (FM0-4754), older one
    - changed LASER SCANNER ASS'Y (FM4-3359), older one
    but still some colors are displacement.
    What to do? Do you have some ideas what next to change? (I have one older machine and this machine I used for spare parts).
    My idea what to change next is... (but what is your idea ). I want to change next these spare parts in this order:
    1.) MAIN DRIVE ASS'Y RM1-8042
    2.) COLOR MISREGIST. SENSOR ASS'Y (RM1-4850)
    3.) H. V. POWER SUPPLY PCB ASS'Y (RM1-5294-050)
    4.) MAIN CONTROLLER PCB ASSEMBLY (formater, FM0-4672)
    Where do you think can be probably still problem (maybe in other spare parts that I do not named here)?
    Please help
    might help if you post/state:

    examples of cali sheets

    error codes involved

    COMPATIBLE toners ALWAYS cause issue.

    What are the life counts on supplies.parts?

    did the 'used' part perform correctly in their own machine?


    explain the shot-gunning of parts with out knowing the actual problems.

    have you done all adjustments/cleaning suggested in SM?

    Need more info before we can give an honest opinion.

  3. #3
    Senior Tech 100+ Posts
    Join Date
    Jun 2012
    Posts
    135
    Rep Power
    0

    Re: Canon I-sensys MF8540CDn - calibration problems

    1.) Now I do not have the example of printing, but i try to draw the picture - see attachment.miss.jpg
    2.) no error codes (full or quick calibration do nothing)
    3.) yes compatible toners, but brand new, without stripes or lines
    4.) life counts (color: 19.000 pages, black: 11.000 pages)
    5.) I am not sure if the used parts in the older machines was good, but when I change these old parts, it was exactly the same as in the machine, where is problem with calibration
    6.) have you done all adjustments/cleaning suggested in SM? - could you help which exactly, I think this could help

  4. #4
    Service Manager 5,000+ Posts
    Canon I-sensys MF8540CDn - calibration problems

    Phil B.'s Avatar
    Join Date
    Jul 2016
    Location
    Raleigh NC
    Posts
    5,649
    Rep Power
    103

    Re: Canon I-sensys MF8540CDn - calibration problems

    Quote Originally Posted by spree View Post
    1.) Now I do not have the example of printing, but i try to draw the picture - see attachment.miss.jpg

    6.) have you done all adjustments/cleaning suggested in SM? - could you help which exactly, I think this could help
    what you have drawn is not calibration but rather registration issues.

    those procedures can be found in the Service Manual.. sounds like you are really an end user this might be a little above your pay grade

  5. #5
    Senior Tech 100+ Posts
    Join Date
    Jun 2012
    Posts
    135
    Rep Power
    0

    Re: Canon I-sensys MF8540CDn - calibration problems

    Thank you - registration problem. I am not end user, but I learn all my service live...
    Any idea what is wrong?
    My ideas:
    A) After replacing Laser Scanner Unit
    1) Register the value on the label packed with the Laser Scanner Unit in service mode.
    2) After the registration, affix the label packed with the unit on the inside of the Right Cover.

    B) Registration Roller - Registration motor faultry (need to be replaced)?

    C) maybe problem with feeding paper from tray? I changed pick-up roller (but nothing happened, still the same problem) - maybe faulty pick-up assembly (the part of the pick-up assembly is registration motor)

    When you help me, what to change, you will be very helpfull. I know you think I am noob, but... I am not... but situation is as is.
    Last edited by spree; 3 Weeks Ago at 09:55 PM.

  6. #6
    Service Manager 5,000+ Posts
    Canon I-sensys MF8540CDn - calibration problems

    Phil B.'s Avatar
    Join Date
    Jul 2016
    Location
    Raleigh NC
    Posts
    5,649
    Rep Power
    103

    Re: Canon I-sensys MF8540CDn - calibration problems

    Quote Originally Posted by spree View Post
    Thank you - registration problem. I am not end user, but I learn all my service live...
    Any idea what is wrong?
    My ideas:
    A) After replacing Laser Scanner Unit
    1) Register the value on the label packed with the Laser Scanner Unit in service mode.
    2) After the registration, affix the label packed with the unit on the inside of the Right Cover.
    B) Registration Roller - Registration motor faultry (need to be replaced)?
    C) maybe problem with feeding paper from tray? I changed pick-up roller (but nothing happened, still the same problem) - maybe faulty pick-up assembly (the part of the pick-up assembly is registration motor)
    When you help me, what to change, you will be very helpfull. I know you think I am noob, but... I am not... but situation is as is.
    UNTIL you get a service manual ...READ THE MANUAL and follw the proper steps..

    no I won't help you... you clearly do not have the abilities needed for this.

  7. #7
    Senior Tech 100+ Posts
    Join Date
    Jun 2012
    Posts
    135
    Rep Power
    0

    Re: Canon I-sensys MF8540CDn - calibration problems

    Quote Originally Posted by Phil B. View Post
    UNTIL you get a service manual ...READ THE MANUAL and follw the proper steps..

    no I won't help you... you clearly do not have the abilities needed for this.
    Thank you very much, but for what and who is this forum? For only professional certificated service technicans with 20 years of practice?

  8. #8
    Junior Member
    Join Date
    May 2019
    Location
    New York
    Posts
    6
    Rep Power
    0

    Re: Canon I-sensys MF8540CDn - calibration problems

    I'm having similar problems - color mismatch correction failed. Colours are misaligned in Y direction on page so I am limited to black and white printing currently

    Other forums suggest buying OEM toner cartridge and retrying, but I don't really have the money to spend on original toner as I have been given my MF8550Cdn for almost free. It was working well before and if I can't fix it, it will be thrown away at cost to the environment.

    Is there a setting in the service menu for manual adjustment of colour alignment? The terminology is not obvious.

    Thanks

  9. #9
    Junior Member
    Join Date
    May 2019
    Location
    New York
    Posts
    6
    Rep Power
    0

    Re: Canon I-sensys MF8540CDn - calibration problems

    Service manual suggests COPIER>ADJUST>SCNR>SUB-S-Y0 etc., would changing these values adjust color print position in vertical axis (looking at page in portrait)



  10. #10
    Senior Tech 100+ Posts
    Join Date
    Jun 2012
    Posts
    135
    Rep Power
    0

    Re: Canon I-sensys MF8540CDn - calibration problems

    The machine gone away, I can not try it . But thank you for your help.

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Get the Android App
click or scan for the Copytechnet Mobile App

-= -= -= -= -=


IDrive Remote Backup

Lunarpages Internet Solutions

Advertise on Copytechnet

Your Link Here