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  1. #1
    Senior Tech 100+ Posts niyaskarimba's Avatar
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    Canon IPF 8400S "Cannot recognize print head R"

    Dear All,
    One of our Canon IPF 8400 showing the error message "Cannor Recognize Print head R".We have tried to replace two Genuine canon print head PF-05.
    Still showing the same error messgae.

    Kindly request to suggest any possible solutions.

    Thanks in advance.

  2. #2
    Senior Tech 100+ Posts niyaskarimba's Avatar
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    Re: Canon IPF 8400S "Cannot recognize print head R"

    Quote Originally Posted by niyaskarimba View Post
    Dear All,
    One of our Canon IPF 8400 showing the error message "Cannor Recognize Print head R".We have tried to replace two Genuine canon print head PF-05.
    Still showing the same error messgae.

    Kindly request to suggest any possible solutions.

    Thanks in advance.
    Dear All,
    Any updates for the above thread.Still the machine having the same error afrter replacing Carriage Unit.

    "Cannot Recognize Print head R"

  3. #3
    Service Manager 10,000+ Posts
    Canon IPF 8400S "Cannot recognize print head R"

    teckat's Avatar
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    Re: Canon IPF 8400S "Cannot recognize print head R"

    Code: 2835
    Display:
    Cannot recognize print head R. Open the top cover and reinsert the printhead R.
    Description:
    Printhead contact failure is detected after the printhead installation.
    Remedy:
    1. Remove and reinstall the printhead. 2. Replace the printhead. 3. Replace the carriage unit. 4. Replace the main controller PCB.

    Code: 2836
    Display:
    Cannot recognize print head L. Open the top cover and reinsert the printhead L.
    Description:
    Printhead contact failure is detected after the printhead installation.
    Remedy:
    1. Remove and reinstall the printhead. 2. Replace the printhead. 3. Replace the carriage unit. 4. Replace the main controller PCB.

    Don't know what's left to suggest ??
    **Knowledge is time consuming, exhausting and costly for a trained Tech.**

  4. #4
    Senior Tech 100+ Posts niyaskarimba's Avatar
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    Re: Canon IPF 8400S "Cannot recognize print head R"

    Quote Originally Posted by teckat View Post
    Code: 2835
    Display:
    Cannot recognize print head R. Open the top cover and reinsert the printhead R.
    Description:
    Printhead contact failure is detected after the printhead installation.
    Remedy:
    1. Remove and reinstall the printhead. 2. Replace the printhead. 3. Replace the carriage unit. 4. Replace the main controller PCB.

    Code: 2836
    Display:
    Cannot recognize print head L. Open the top cover and reinsert the printhead L.
    Description:
    Printhead contact failure is detected after the printhead installation.
    Remedy:
    1. Remove and reinstall the printhead. 2. Replace the printhead. 3. Replace the carriage unit. 4. Replace the main controller PCB.

    Don't know what's left to suggest ??
    Thanks for the reply
    Tried replacing carriage unit & Main controller PCB Still same.

    Regards,
    Niyas

  5. #5
    Service Manager 10,000+ Posts
    Canon IPF 8400S "Cannot recognize print head R"

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    Re: Canon IPF 8400S "Cannot recognize print head R"

    Quote Originally Posted by niyaskarimba View Post
    Thanks for the reply
    Tried replacing carriage unit & Main controller PCB Still same.

    Regards,
    Niyas
    ======================================

    Firmware

    Canon U.S.A., Inc. | imagePROGRAF iPF8400
    **Knowledge is time consuming, exhausting and costly for a trained Tech.**

  6. #6
    Senior Tech 100+ Posts niyaskarimba's Avatar
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    Re: Canon IPF 8400S "Cannot recognize print head R"

    Quote Originally Posted by teckat View Post
    ======================================

    Firmware

    Canon U.S.A., Inc. | imagePROGRAF iPF8400
    Not able to update.It says printer in error state.

    Also please suggest,i have replaced Carriage & main board seperately.

    whether we need to replace carriage & main controller at the same time?

    Please advice.

  7. #7
    Service Manager 10,000+ Posts
    Canon IPF 8400S "Cannot recognize print head R"

    teckat's Avatar
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    Re: Canon IPF 8400S "Cannot recognize print head R"

    Quote Originally Posted by niyaskarimba View Post
    Not able to update.It says printer in error state.

    Also please suggest,i have replaced Carriage & main board seperately.

    whether we need to replace carriage & main controller at the same time?

    Please advice.

    Main Controller Replacement Caution----see attach
    Clearing Error Codes--see attach

    Print heads not Recognized

    Solution :
    Once the covers were removed it was discovered that the flex cable on the top of the carriage assembly had sustained damage.
    Steps:
    a) Replace the flex cable, with no print heads installed power up in service mode.
    b) When the printer comes to a ready state then power down and power up in user mode still no print heads installed.
    c) Wait until the printer asks for the print heads to install them.
    In this case replacing the flex cable resolved the issue.
    **Knowledge is time consuming, exhausting and costly for a trained Tech.**

  8. #8
    Senior Tech 100+ Posts niyaskarimba's Avatar
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    Re: Canon IPF 8400S "Cannot recognize print head R"

    Quote Originally Posted by teckat View Post

    Main Controller Replacement Caution----see attach
    Clearing Error Codes--see attach

    Print heads not Recognized

    Solution :
    Once the covers were removed it was discovered that the flex cable on the top of the carriage assembly had sustained damage.
    Steps:
    a) Replace the flex cable, with no print heads installed power up in service mode.
    b) When the printer comes to a ready state then power down and power up in user mode still no print heads installed.
    c) Wait until the printer asks for the print heads to install them.
    In this case replacing the flex cable resolved the issue.




    Dear All,

    One more machine showing the same error after replacing the print head

    Machine Model:Canon IPF 8400S

    Error Message:"Cannot recognize print head R.Open the top cover & reinsert the print head R"

    Even when we return the old print head it is showing the same error.

    Any chance to update the firmware,even if the printer is in error state.

    Note:We are using canon Genuine print heads only.

    Kindly go through the attachments for your reference.

    Thanks of all your previous supports,especially for teckat.

  9. #9
    Service Manager 10,000+ Posts
    Canon IPF 8400S "Cannot recognize print head R"

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    Re: Canon IPF 8400S "Cannot recognize print head R"

    Quote Originally Posted by niyaskarimba View Post
    Dear All,

    One more machine showing the same error after replacing the print head

    Machine Model:Canon IPF 8400S

    Error Message:"Cannot recognize print head R.Open the top cover & reinsert the print head R"

    Even when we return the old print head it is showing the same error.

    Any chance to update the firmware,even if the printer is in error state.

    Note:We are using canon Genuine print heads only.

    Kindly go through the attachments for your reference.

    Thanks of all your previous supports,especially for teckat.

    labels on Canon products mean "nothing in this counterfeit world"

    both printheads from the same supplier ???
    **Knowledge is time consuming, exhausting and costly for a trained Tech.**

  10. #10
    Senior Tech 100+ Posts niyaskarimba's Avatar
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    Re: Canon IPF 8400S "Cannot recognize print head R"

    Quote Originally Posted by teckat View Post

    labels on Canon products mean "nothing in this counterfeit world"

    both printheads from the same supplier ???
    Yes both from same supplier & now the problem is even when we returned the old print head it is same.

    Please advice to clear this error.

    Thanks in advance.

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