Very strange skew issue, 4525

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  • Rusty.Harris
    Senior Tech

    Site Contributor
    500+ Posts
    • Jan 2021
    • 609
    #1

    Very strange skew issue, 4525

    Ok, now THIS is weird. Brand new out of box 4525. NO box damage. The slit glass was cracked, but no other damage.
    Machine set up fine. After easy setup, running test copies off the glass a VERY pronounced optical skew.
    Since the slit glass was damaged, pulled the glass, set #2/3 mirror to the left frame, no issues, & just to be sure, loosened
    #1 mirror screws verified it was against the #2/3 mirror. All mirrors are in position, the adjustment screws haven't been
    moved. Tried a few more things then thought I'll just open a ticket, write it up as unseen damage and be done with it.
    Got a ticket number, uploaded the sys-logic board test data (which showed ok on both). ATSG wanted one more adjustment
    of the entire scanner box under the frame. Still no luck.
    Online tech texted me to try adjusting the mirrors per the book, so did the 05-3033 and thought I'd run a test copy to have
    a fresh before copy. (here's where it gets strange). The 05 mode test copy is PERFECTLY aligned. (see attached photos)
    Took it OUT of test mode, ran a copy off the glass, skewed. Put it back in 05 test mode, copy is PERFECT.
    I think I'll do a wipe of the drive, decommission/recommission after lunch and see what happens.

    Twilight zone day I guess.

    Off glass.jpg05 mode.jpg
    Tags: 4525, copy, copy quality, skew, test
    • blackcat4866
      Master Of The Obvious

      Site Contributor
      10,000+ Posts
      • Jul 2007
      • 22946
      #2
      Re: Very strange skew issue, 4525

      You haven't said so, but I'm going to assume that you isolated the issue to the scanner (not an intermittent problem with the print engine or a specific paper source). The board reset makes the most sense, I guess.

      Were I to take a wild guess, I'd theorize that there's an electronic scanner calibration adjustment that's done on the assembly line, and somehow that adjustment failed/ did not complete successfully. Hopefully there's a way to do that particular factory adjustment when you're not at the factory. =^..^=
      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 =^..^=

        Comment

        • Rusty.Harris
          Senior Tech

          Site Contributor
          500+ Posts
          • Jan 2021
          • 609
          #3
          OPERATAOR ERROR!

          Well, every once in a while we like to take a trip down the ole rabbit hole.
          That's exactly what I did.
          When I set up machines, regardless of how many trays, I only put paper in tray 1, then after all the setup & calibration,
          move it to tray 2 and then to the LCF. The tech that set this machine up put paper in all 3 trays.
          In normal mode, machine defaults to the LCF. In TEST mode, it defaults to tray 1.
          Tray 1 & the lcf are both set to letter, therefore in test mode, the copies look good because it picks tray 1
          but in normal mode, it picks the LCF. Once I FINALLY figured that out, I can tell the alignment value of the
          LCF is incorrect, it doesn't sound right coming out of the LCF...no "thump" from the paper.

          See, again this is why you NEVER assume anything. When I saw the broken slit glass, I ASS/U/ME(D) it had
          to be an optics problem, and went down the rabbit hole.

            Comment

            • tsbservice
              Field tech

              Site Contributor
              5,000+ Posts
              • May 2007
              • 7926
              #4
              Re: OPERATAOR ERROR!

              Originally posted by Rusty.Harris
              Well, every once in a while we like to take a trip down the ole rabbit hole.
              That's exactly what I did.
              When I set up machines, regardless of how many trays, I only put paper in tray 1, then after all the setup & calibration,
              move it to tray 2 and then to the LCF. The tech that set this machine up put paper in all 3 trays.
              In normal mode, machine defaults to the LCF. In TEST mode, it defaults to tray 1.
              Tray 1 & the lcf are both set to letter, therefore in test mode, the copies look good because it picks tray 1
              but in normal mode, it picks the LCF. Once I FINALLY figured that out, I can tell the alignment value of the
              LCF is incorrect, it doesn't sound right coming out of the LCF...no "thump" from the paper.

              See, again this is why you NEVER assume anything. When I saw the broken slit glass, I ASS/U/ME(D) it had
              to be an optics problem, and went down the rabbit hole.
              Ouch, you never ever know more than a big fat bit of everything until the tiny rest bytes you 😂
              I like your mindset. Don't give up embarrassing yourself.
              A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.
              Blessed are they who can laugh at themselves, for they shall never cease to be amused.

                Comment

                • blackcat4866
                  Master Of The Obvious

                  Site Contributor
                  10,000+ Posts
                  • Jul 2007
                  • 22946
                  #5
                  Re: OPERATAOR ERROR!

                  Originally posted by Rusty.Harris
                  Well, every once in a while we like to take a trip down the ole rabbit hole.
                  That's exactly what I did.
                  When I set up machines, regardless of how many trays, I only put paper in tray 1, then after all the setup & calibration,
                  move it to tray 2 and then to the LCF. The tech that set this machine up put paper in all 3 trays.
                  In normal mode, machine defaults to the LCF. In TEST mode, it defaults to tray 1.
                  Tray 1 & the lcf are both set to letter, therefore in test mode, the copies look good because it picks tray 1
                  but in normal mode, it picks the LCF. Once I FINALLY figured that out, I can tell the alignment value of the
                  LCF is incorrect, it doesn't sound right coming out of the LCF...no "thump" from the paper.

                  See, again this is why you NEVER assume anything. When I saw the broken slit glass, I ASS/U/ME(D) it had
                  to be an optics problem, and went down the rabbit hole.
                  You know what I admire? The confidence, grace, and humility to admit ones mistakes. It's an uncommon ability.
                  Congratulations on finding your way back up the rabbit hole! =^..^=
                  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 =^..^=

                    Comment

                    • tsbservice
                      Field tech

                      Site Contributor
                      5,000+ Posts
                      • May 2007
                      • 7926
                      #6
                      Re: OPERATAOR ERROR!

                      Originally posted by blackcat4866
                      You know what I admire? The confidence, grace, and humility to admit ones mistakes. It's an uncommon ability.
                      Congratulations on finding your way back up the rabbit hole! =^..^=
                      Can't say much more you're absolutely correct!
                      A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.
                      Blessed are they who can laugh at themselves, for they shall never cease to be amused.

                        Comment

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