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  1. #1
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    AFICIO MP C551 SC 819 ( 5348 0x5554444F )

    Hi Seniors,
    It is an AFICIO MP C2551 with SC 819.
    The scenario is below step wise:

    1.Machine's power supply burnt due to surge and 2 varistors and 02 fuses were exploded.
    2.I repaired the power supply and checked all the output voltages that were normal.
    3.Installed the PSU in machine and start the machine .The machine was started and a display screen came (attachment 1) on screen "Shutting Down..... Please wait Main power will be turned off automatically.Max waiting time 2 minutes" and machine goes off and turned on automatically and within a minute or so SC 819 ( 5344 0x5554444F) displayed .
    4.I have tried to enter in SP mode but nothing happened. Tried to format the HDD with help of PC and installed it but no success.
    5. Tried to update the firmware but machine restarts after 2 minutes each time.
    6. Used Sd card to update firmware, swapped memory modules ,Run diagnosis but SC 819 is there.
    7.The machine starts and goes READY in Background with a display |"Shutting Down..... Please wait Main power will be turned off automatically.Max waiting time 2 minutes".
    8.Machine shows SC 870 & SC 860 in left lower corner of the screen in background in 1st 02 minutes each time.

    It is strange behavior of machine.
    I need guidance of advice of seniors.
    02 minutes.jpg
    SC 819.jpg

    Last edited by muaazgujjar; 3 Days Ago at 03:45 PM. Reason: I am adding some screen shots.

  2. #2
    How'd ya manage that? 500+ Posts zed255's Avatar
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    Re: AFICIO MP C551 SC 819 ( 5348 0x5554444F )

    Missed connector for power switch, the one for the coil that actually breaks the power switch contacts. Had this scenario in an SP5210 that a co-worker failed to diagnose.

    Zed
    One out of four people is mentally unbalanced.
    Think of your three closest friends...
    If they seem okay, then You're The One.

  3. #3
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    Re: AFICIO MP C551 SC 819 ( 5348 0x5554444F )

    Hi,
    I have double checked all fuses and connectors at PSU and start the unit.
    Now the unit starts and stay at "Please wait " for a minute or so and then machine restarts and SC 819( 5344 0X5554444F) appears.I cannot access SP MODE .


  4. #4
    Service Manager 2,500+ Posts
    AFICIO MP C551 SC 819 ( 5348 0x5554444F )

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    Re: AFICIO MP C551 SC 819 ( 5348 0x5554444F )

    Quote Originally Posted by muaazgujjar View Post
    Hi,
    I have double checked all fuses and connectors at PSU and start the unit.
    Now the unit starts and stay at "Please wait " for a minute or so and then machine restarts and SC 819( 5344 0X5554444F) appears.I cannot access SP MODE .
    Have you tried rebooting with the HDD disconnected?
    I doubt that's the issue, but it's easy to check.
    Otherwise, sounds like more than just the PSU was damaged. SC819 points to either defective Dimm or controller


  5. #5
    How'd ya manage that? 500+ Posts zed255's Avatar
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    Re: AFICIO MP C551 SC 819 ( 5348 0x5554444F )

    Sounds like the machine is being asked to turn off, but power remains supplied to the controller. After the shutdown sequence and the power switch solenoid is fired the system expects to turn off. When it does not you get the SC819.

    Either there is something wrong with the AC control or the power switch, assuming no connectors were missed on reassembly.

    Zed
    One out of four people is mentally unbalanced.
    Think of your three closest friends...
    If they seem okay, then You're The One.

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