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  1. #1
    Service Manager 250+ Posts
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    HP 3600 keeps calibrating

    machine comes ready then immediately goes into calibration and never quits. Berst I could get from the events are 54.0f 1,2,3. This is a brand new machine out of warranty, 18 prints total on it. I tried three different set of carts in it. One brand new set. all show genuine on screen. Cleaned all the drum contacts. tried all the boards with one exception. I might not have tried an dc controller long enough to get a result as I was in a hurry to get done as I had 1 1/2 hour drive to go. No excuse. I thought maybe I gave it enough time to calibrate but then again maybe not. I got the boards from an identical machine there at customers office. It lays down the patches ok but never makes a decision to come ready. I changed the ETB as well. I am not so sure it has something to do with the etb wiring back to the dc controller. I also checked the connector pcb from the ETB to the dc controller. what the heck is going on? Do you think it is the dc controller?


  2. #2
    Dangerous with Tools 1,000+ Posts prntrfxr's Avatar
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    See my attachment. I haven't had this question in a while. If anyone knows anything other that what I have on this service note let me know, please, so I can update it.

    Attached Files Attached Files
    Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well-preserved body, but rather to skid in sideways - Coke in one hand - chocolate in the other - body thoroughly used up, totally worn out and screaming "WOO-HOO, what a ride!".

  3. #3
    Field Supervisor 1,000+ Posts bilyahn's Avatar
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    Seems like this is a very problematic machine series? With very expensive fixes always starting with the ETB? I have only seen a few of these so would like to know if it should be recommended to our customers or tell them to stay FAR FAR away??? Is there a reasonably priced HP color laserjet out there that is reliable or do we need to look at other sources? Thanks to prntrfxr for all of the great information.

    Bil


  4. #4
    Service Manager 250+ Posts
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    Thanks for the help will try your info. The printer is just sitting here waiting for me, school is out, so I am not pressured, which is a good thing.
    I will try and get to it today.


  5. #5
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    Thumbs up HP Color Laserjet 3600n Calibration Problem

    Thank you OP for that Service List. Step number one stopped the calibration "loop" and I am able to print again with no problems!


  6. #6
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    Re: HP 3600 keeps calibrating

    Thanks PrinterFixer! It worked for me too!


  7. #7
    Dangerous with Tools 1,000+ Posts prntrfxr's Avatar
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    Re: HP 3600 keeps calibrating

    You are both welcome. That's what we're here for, so just pass the help on.

    Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well-preserved body, but rather to skid in sideways - Coke in one hand - chocolate in the other - body thoroughly used up, totally worn out and screaming "WOO-HOO, what a ride!".

  8. #8
    Service Manager 250+ Posts
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    Re: HP 3600 keeps calibrating

    Just to let folks know I gave up on this thing. sure the bypass thing works but it isn't a fix. I tried firmware. I changed the belt the controller the hv board all cartridges as I had an identical machine to pull parts from. Nothing resolved it. leads me to believe it is either a connection problem or sensor problem and even a laser problem. my bets are on laser. I did not try and swap lasers or even swap internally the two lasers. I did have the laser unit out,cleaned and inspected. I had one the other day do the same thing so the customer said. I took it back to the shop and it kept running for about 5 minutes then cleared up.


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