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  1. #21
    Service Manager 5,000+ Posts
    Error code C2557


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    Thumbs down Re: Error code C2557

    Actually you're a day late and a buck short. The original post was in 2010.

  2. #22
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    Re: Error code C2557

    I have error c255c before F8. Whats i do?

  3. #23
    RTFM!! 5,000+ Posts allan's Avatar
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    Re: Error code C2557

    You mean while running F8?
    What did you do and why did you do it?
    Meaning did you replace the developer..?

    The code means the voltage from the TCR sensor was way out of range. Could be the toner carrier ratio is way out.
    Or the sensor, connectors cable or control is faulty.
    Whatever

  4. #24
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    Re: Error code C2557

    Я изменил разработчик на новый для инструкции по эксплуатации. Сначала была ошибка с 2557. Во время f8 произошла ошибка with c255c.
    Спасибо за ответ! К сожалению мой плохой English.

  5. #25
    RTFM!! 5,000+ Posts allan's Avatar
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    Re: Error code C2557

    Did you clear the life counters and restarted the machine with the side door open?
    You must close the door just before you run F8.
    If you do not do it that way the machine will give that code C2557.
    Go to tech rep choice in service mode then to printer. Find the gain adjustment value.
    Normal is between 145 and 155.

    Make sure the TCR sensor is plunged in OK and the image unit is sitting properly.
    Then do the procedure again.
    Whatever

  6. #26
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    Re: Error code C2557

    Да. С открытой дверью. Перед тем как F8, дверь была закрыта. Теперь еще раз я буду проверять все контакты.
    Можете ли вы сказать мне , как проверить моторы в сервисном режиме? Существует подозрение , что тонер не входит в блок проявки.
    Here are the values of Level History

  7. #27
    RTFM!! 5,000+ Posts allan's Avatar
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    Re: Error code C2557

    Add spoon by spoon full of tonner and reset life and run F8 until it stops moaning.
    Seems like there is to little toner in there.

    But before that remove the ATDC sensor and make sure there is no buildup or damage to it.
    How does a demo page look like? dark or light?
    Whatever

  8. #28
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    Re: Error code C2557

    Clear life counters, turn OFF machine , turn ON after 15s then run F8.

    But if you get c255c after running F8 that means that TCR sensor cannot make measurement of developer at all meaning either tcr has something on (clean it) or developer needs to be replaced.

    To be on the safe side saying to replace developing unit and developer is the best bet.

  9. #29
    RTFM!! 5,000+ Posts allan's Avatar
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    Re: Error code C2557

    It works with solenoids and spring clutches.
    No way to check that from service mode.
    There is a reed switch in the sub hopper and the magnet actuator can get stuck.
    You can strip open the sub-hopper and clean it.

    If the solenoids get stuck(damper pads gets old and sticky) it normally adds to much toner.
    If the solenoid does not kick in it will not add toner and should ask you to replace the toner bottle.
    Whatever

  10. #30
    Trusted Tech 50+ Posts service_man's Avatar
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    Re: Error code C2557

    Hello,
    Go to service manual, and find ATDC Gain, and change the number only for 5 MAX gain. I solved much problem for that way.
    Sure, if you have developer in unit, and if you have toner in hooper.
    I hope so, that you not change toner manufactured ( etc KATUN, ORIGINAL, CHINA )

    Regards

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