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  1. #1
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    Post Work centre 7855 blank display and all lights on

    Greetings all, I am working on a 7855 Xerox and seem to have the same problem of machine not powering up but all lights are on. When I checked the LED behind the machine it shows 8. The customer mentioned the machine was okay but as they tried to turn it on the following morning the machine couldn’t start. Your help will be appreciated thank you.
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  2. #2
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    Re: Work centre 7855 blank display and all lights on

    Quote Originally Posted by CeeJay1800 View Post
    Greetings all, I am working on a 7855 Xerox and seem to have the same problem of machine not powering up but all lights are on. When I checked the LED behind the machine it shows 8. The customer mentioned the machine was okay but as they tried to turn it on the following morning the machine couldn’t start. Your help will be appreciated thank you.
    How about reloading firmware.

  3. #3
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    Re: Work centre 7855 blank display and all lights on

    Quote Originally Posted by AjitN View Post
    How about reloading firmware.
    Tried that but no luck, the issue is the machine is not even attempting to boot as the moment the switch is turned on just the lights around the LCD are constantly turning on and the machine doesn’t allow for anything else. Thank you

  4. #4
    Service Manager 5,000+ Posts
    Work centre 7855 blank display and all lights on

    Phil B.'s Avatar
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    Re: Work centre 7855 blank display and all lights on

    Quote Originally Posted by CeeJay1800 View Post
    Tried that but no luck, the issue is the machine is not even attempting to boot as the moment the switch is turned on just the lights around the LCD are constantly turning on and the machine doesn’t allow for anything else. Thank you
    how did you try to reload firmware?

    did you perform ALTBOOT?

  5. #5
    Service Manager 1,000+ Posts
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    Re: Work centre 7855 blank display and all lights on

    Check power to SBC pwb if power is ok replace SBC pwb

  6. #6
    Technician
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    Re: Work centre 7855 blank display and all lights on

    Check hard drive health with a PC. Software are loaded into drive and sometimes his happened.

    Try another hard drive with Alt Boot.

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