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  1. #1
    Field Supervisor 500+ Posts
    Join Date
    Mar 2017
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    4050 LCD screen freezing

    4050, latest f/w never been on the network (standalone copier). LDC icons are unresponsive after an indefinite time of sitting idle. hard buttons always works and LCD responds to the presance of your hand, but COPY, FAX, ect will not respond. Have replace HDD, control panel and main bd with no change. No error code when it locks up. Any ideas? Ed

  2. #2
    Master Of The Obvious 10,000+ Posts
    4050 LCD screen freezing

    blackcat4866's Avatar
    Join Date
    Jul 2007
    Lapeer, Michigan
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    Re: 4050 LCD screen freezing

    I can't add anything useful. You've done everything I would have, and then some. =^..^=
    If you'd like a serious answer to your request:
    1) demonstrate that you've read the manual
    2) demonstrate that you made some attempt to fix it.
    3) if you're going to ask about jams include the jam code.
    4) if you're going to ask about an error code include the error code.
    5) You are the person onsite. Only you can make observations.

    blackcat: Master Of The Obvious =^..^=

  3. #3
    Service Manager 1,000+ Posts Bix's Avatar
    Join Date
    Apr 2018
    Rep Power

    Re: 4050 LCD screen freezing

    Check the wiring from the MFPB to the screen. On the bizhub 4050 it is very tight. Once the screen froze and by detaching and reattaching the cable from both directions, the screen started working again for a while. After the complete change of the panel, it started working again. So I don't know if the new touch panel or cable routing helped me.
    p.n.: A6F7N11000

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