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  1. #1
    Senior Tech 250+ Posts
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    C308 "unable to enter sleep mode"

    I have a C308 that stays on all the time. It won't enter sleep or low power mode after the specified time, and even pressing the power key just gives the message "unable to enter sleep mode."

    I've updated the firmware and function version, but it had no effect. All of the power save settings are set properly as far as I can see. Any ideas?

  2. #2
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    Re: C308 "unable to enter sleep mode"

    Quote Originally Posted by mascan42 View Post
    I have a C308 that stays on all the time. It won't enter sleep or low power mode after the specified time, and even pressing the power key just gives the message "unable to enter sleep mode."

    I've updated the firmware and function version, but it had no effect. All of the power save settings are set properly as far as I can see. Any ideas?
    system2 initialize all.

  3. #3
    Certified Konica Expert 2,500+ Posts
    C308 "unable to enter sleep mode"

    Synthohol's Avatar
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    Re: C308 "unable to enter sleep mode"

    bizhub 308,bizhub 368,bizhub 458,bizhub 458e,bizhub 558,bizhub 558e,bizhub C258,bizhub C308,bizhub C368,bizhub C458,bizhub C558,bizhub C658 Related Options:
    Problem
    MFP will not enter sleep mode.

    Solution
    CAUSE: Corrupt or failed HDD or damaged Power source cable and Interface cable.

    SOLUTION: Replace the HDD (p/n A2X0M72C00) and Power source cable (p/n A7PUN15200), Interface cable (p/n A7PUN15100) as a set.

  4. #4
    Service Manager 5,000+ Posts
    C308 "unable to enter sleep mode"

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    Re: C308 "unable to enter sleep mode"

    There is an enable/prohibit sleep mode option in CE mode maybe another engineer has set this to prohibit?
    Let us eat, drink, and be merry, because tomorrow we may die!

    For all your firmware & service manual needs please visit us at:

    www.copierfirmware.co.uk - www.printerfirmware.co.uk




  5. #5
    Certified Konica Expert 2,500+ Posts
    C308 "unable to enter sleep mode"

    Synthohol's Avatar
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    Re: C308 "unable to enter sleep mode"

    prohibit removes the option to turn sleep OFF. its backwards sounding but thats how it works. you are disabling or permitting the option to disable sleep.

  6. #6
    Service Manager 5,000+ Posts
    C308 "unable to enter sleep mode"

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    Re: C308 "unable to enter sleep mode"

    Quote Originally Posted by Synthohol View Post
    prohibit removes the option to turn sleep OFF. its backwards sounding but thats how it works. you are disabling or permitting the option to disable sleep.
    I know what I mean lol

    So may an engineer has set this to enable & has also set the sleep to off in power settings?
    Let us eat, drink, and be merry, because tomorrow we may die!

    For all your firmware & service manual needs please visit us at:

    www.copierfirmware.co.uk - www.printerfirmware.co.uk




  7. #7
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    Re: C308 "unable to enter sleep mode"

    No, sleep mode is enabled, and turned on for 60 minutes.

    After a bit of research, I realized that the power key is disabled because the machine has a Fiery connected. Would this also prevent the machine from automatically entering sleep mode?

  8. #8
    Service Manager 5,000+ Posts
    C308 "unable to enter sleep mode"

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    Re: C308 "unable to enter sleep mode"

    Quote Originally Posted by mascan42 View Post
    No, sleep mode is enabled, and turned on for 60 minutes.

    After a bit of research, I realized that the power key is disabled because the machine has a Fiery connected. Would this also prevent the machine from automatically entering sleep mode?
    Yes mentioning a fiery is connected would have helped!
    Let us eat, drink, and be merry, because tomorrow we may die!

    For all your firmware & service manual needs please visit us at:

    www.copierfirmware.co.uk - www.printerfirmware.co.uk




  9. #9
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    Re: C308 "unable to enter sleep mode"

    Sorry for resurrecting this but we have two machines with similar problems. A c308 and c3351. Neither will enter sleep or low power mode after the specified time. Pressing the sub power key brings the message "unable to enter low power mode". Holding the sub power key works as intended. Neither machines are connected to a fiery. Sleep mode disabled, low power set to 60 mins. Weekly timer set to off. Both are new units just sitting in our store demo room, and they have been on surge protectors. Really scratching my head on this one.

    Edit: I'm an idiot. Per SSD CAUSE: Documents may still be in the ADF or on the glass.
    Last edited by crannon; 11-13-2018 at 03:39 PM.

  10. #10
    Service Manager 1,000+ Posts Bix's Avatar
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    Re: C308 "unable to enter sleep mode"

    Hello, sometimes it is necessary to wait a few minutes after switching on the machine to activate this mode.

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