808 Copy Quality

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  • Madnhain
    Trusted Tech

    100+ Posts
    • Dec 2012
    • 133
    #1

    808 Copy Quality

    Print quality is fine, scanning from adf results in solid grey page, scan from glass is distorted (left margin is 2 inches to the right and the image is shrunken.) duplex from ADF results in side 1 grey, side 2 (CIS) fine.
    Have replaced CCD, Main PCB, Scanner drive board, Scanner drive ribbon cable, scan board, tested home position sensor. Reflashed FW, rolled back FM.

    Here's the fun part. When I put 8 1/2 x 11 on the glass and make a copy, the scanner smacks the right side hard enough to be scary. like the home position is off... but we know the home position sensor is working.

    Edit: codes that have been occuring are 9401 and 6102


    Any thoughts?

    Thanks!
    Tags: position, scanner, sensor, side
    • Phil B.
      Field Supervisor

      10,000+ Posts
      • Jul 2016
      • 22808
      #2
      Re: 808 Copy Quality

      Originally posted by Madnhain
      Print quality is fine, scanning from adf results in solid grey page, scan from glass is distorted (left margin is 2 inches to the right and the image is shrunken.) duplex from ADF results in side 1 grey, side 2 (CIS) fine.
      Have replaced CCD, Main PCB, Scanner drive board, Scanner drive ribbon cable, scan board, tested home position sensor. Reflashed FW, rolled back FM.

      Here's the fun part. When I put 8 1/2 x 11 on the glass and make a copy, the scanner smacks the right side hard enough to be scary. like the home position is off... but we know the home position sensor is working.

      Any thoughts?

      Thanks!
      sounds like you need to restring the scanner

        Comment

        • Albonline
          Service Manager

          1,000+ Posts
          • Sep 2008
          • 1098
          #3
          Re: 808 Copy Quality

          Originally posted by Madnhain
          Print quality is fine, scanning from adf results in solid grey page, scan from glass is distorted (left margin is 2 inches to the right and the image is shrunken.) duplex from ADF results in side 1 grey, side 2 (CIS) fine.
          Have replaced CCD, Main PCB, Scanner drive board, Scanner drive ribbon cable, scan board, tested home position sensor. Reflashed FW, rolled back FM.

          Here's the fun part. When I put 8 1/2 x 11 on the glass and make a copy, the scanner smacks the right side hard enough to be scary. like the home position is off... but we know the home position sensor is working.

          Any thoughts?

          Thanks!

          not once, but twice i have had that sensor check good in io mode yet not work in copy mode, did you try changing it?

            Comment

            • Madnhain
              Trusted Tech

              100+ Posts
              • Dec 2012
              • 133
              #4
              Re: 808 Copy Quality

              Originally posted by Albonline
              not once, but twice i have had that sensor check good in io mode yet not work in copy mode, did you try changing it?
              I didn't bother with io mode. I removed the sensor (since I have the machine in pieces at the moment) and the machine immediately acted like that was a bad idea, telling me that the sensor was functioning normally.

              Fun fact, I have 2 808s (both of these are fairly new) with these same symptoms.

                Comment

                • Madnhain
                  Trusted Tech

                  100+ Posts
                  • Dec 2012
                  • 133
                  #5
                  Re: 808 Copy Quality

                  Originally posted by Phil B.
                  sounds like you need to restring the scanner
                  This is exactly what I don't want to hear.

                    Comment

                    • Phil B.
                      Field Supervisor

                      10,000+ Posts
                      • Jul 2016
                      • 22808
                      #6
                      Re: 808 Copy Quality

                      Originally posted by Madnhain
                      This is exactly what I don't want to hear.
                      buy the jigs to hold the scanner in place.. time consuming but...

                        Comment

                        • Madnhain
                          Trusted Tech

                          100+ Posts
                          • Dec 2012
                          • 133
                          #7
                          Re: 808 Copy Quality

                          Originally posted by Phil B.
                          buy the jigs to hold the scanner in place.. time consuming but...
                          so... the front and rear are even and the scan unit has full range left to right. Previously we have checked the set screws to make sure that they hadn't come loose. Is there another visual inspection that would help identify if there is a need to re string the scanner?

                            Comment

                            • tsbservice
                              Field tech

                              Site Contributor
                              5,000+ Posts
                              • May 2007
                              • 7635
                              #8
                              Re: 808 Copy Quality

                              They made scanner wires to be supplied as replaceable parts and Jig to be used when exchanging them...maybe for a reason
                              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

                                • Copier Addict
                                  Aging Tech

                                  Site Contributor
                                  10,000+ Posts
                                  • Jul 2013
                                  • 13039
                                  #9
                                  Re: 808 Copy Quality

                                  Error code C-6102 relates directly to a malfunctioning scanner home position sensor.

                                    Comment

                                    • blackcat4866
                                      Master Of The Obvious

                                      Site Contributor
                                      10,000+ Posts
                                      • Jul 2007
                                      • 22699
                                      #10
                                      Re: 808 Copy Quality

                                      This machine is still sitting in our shop:

                                      bizhub 808 with scanning issue
                                      =^..^=
                                      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

                                        • blackcat4866
                                          Master Of The Obvious

                                          Site Contributor
                                          10,000+ Posts
                                          • Jul 2007
                                          • 22699
                                          #11
                                          Re: 808 Copy Quality

                                          Correction: I just got this from the team leader: The second new CCD fixed it. The first new CCD did not change the symptoms. =^..^=
                                          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

                                            • Madnhain
                                              Trusted Tech

                                              100+ Posts
                                              • Dec 2012
                                              • 133
                                              #12
                                              Re: 808 Copy Quality

                                              *SOLVED*

                                              The scan drive gear, driven by the scan motor by a belt in the rear right of the scan section, accessible by removing the top right cover has a screw that secures the white gear to a metal shaft. This screw was loose and too short resulting in the gear slipping on the drive shaft. Replace with a longer screw and it resolved the issue on BOTH our 808s with this issue.

                                              KM will be issuing a bulletin on this in the near future.

                                                Comment

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