View Full Version : C654 with white spots on 2nd side
francois
10-16-2013, 08:46 AM
Can any one help with a this problem. I have installes a brand new C654e machine and from the first duplex copy i made the machine makes white spots on the second side. i have lowered the 2nd image transfer voltage with no luck at all
EarthKmTech
10-16-2013, 09:33 AM
the customer is using low quality paper, this must be addressed.
every single 4 series will do this if poor quality paper is used.
francois
10-16-2013, 10:13 AM
Hi, the customer is using 80g normal paper. we tested that paper on a C652 that is standing next to the C654 machine, working ok. even on 120g,160g gloss and bond paper the machine is making the white spots
dirtyfingers
10-16-2013, 10:16 AM
There is a KM bulletin for this issue on the C654
Search KM website for "starry effect (white dots) on reverse side "
Cause
Auto mode for 2nd transfer isn't very good
Changing off auto has shown some good results for me
There is also SW setting changes in Bulletin
but I havnt needed to use them yet
Sorry I don't have the Bulletin number
JustManuals
10-16-2013, 05:11 PM
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rajabi1367
02-06-2017, 04:40 PM
I have this problem with C754e
In one-side every thing is OK, but when I print two-side, the first side (which is printed last) is with little dots.
I have tested on PaperOne and DoubleA papers, the same results
copyman
02-07-2017, 12:21 AM
Problem Solution
ID: KBA00029701
Related Products:bizhub C754e,bizhub C654,bizhub C654e,bizhub C754
Related Options:
Problem
White spots (Starry night) on second side.
Solution
CAUSE: Firmware requires updating.
SOLUTION: Install firmware version K5 or newer and perform the following.
1. Service mode =>System 2 => software switch change dip switch 59 to hex 01.
2. Administrator mode => Security Settings =>Security Details. Change the following Engine Dip switches.
Engine DipSw 25 to Enable
Engine DipSW 26 to Enable
3. Make the following adjustments in Service Mode =>Image => Process Adjustment
Transfer adjust => 2nd side transfer -5
4. Service mode => Machine => Fusing Temperature
Adjust Fuser Temperature to -10
Brett GS
09-07-2017, 07:12 PM
Hi all
I have got the same issue.
Machine worked fine until a brand new transfer belt was replaced,tried another new belt but no luck.
I have followed and applied all the above mentioned settings,the paper quality is decent.
Have the material quality that KM are using on the belts
nowdays gone down/cheap?.
Thanks
Brett
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