hello everyone,
i am encountering an issue with a RP3700, and running out of ideas to try and fix it.
upon paper feed, the paper gets folded, crosswise, on the top part of the page. it feeds, prints and ejects fine most of the time, but the print is folded. (intensity of the fold varies, from very light to very marked, sometimes feeding paper totally folded and thus not printing everywhere on the page)
from what i researched so far, it seems to be a problem with the timing between the first and second paper feed area. happens with every drum, and apparead during the printing of a book (pretty heavy duty), machine was running smoothly until then.
it very much looks like the issue on this thread : but the solution proposed there does not work...
the first page fed is sometimes spared by the fold.
there is no vertical position issue on the prints that do come out.
- there is no physical obstacle or anything, i can run a piece of paper by hand without any issue.
- i have tried to run standard paper with the paper width lever set on "card" (as advised in the other thread), no changes
- tried every possible combination of the force and angle dials
- from the manual, what i have found is that you can adjust the off angle for the paper feed clutch if you are getting too much buckle. i tried to adjust on different values (test n°481), no changes.
- in the back, everything looks fine from what i can tell (screws, timing of cams, etc.). i found that the beak of the pf clutch was no longer engaged in its locking plate, i put it back, but no changes.
- spinning the timing roller assembly ccw (by hand), i compared the movement on another rp3700 we have, i feel like it is a little looser. people using the machine have been unjamming paper in the feed area without using the little lever to release the rollers, probably damaging them ? could that be the issue ?
other thing identified in the machine : the collar separator is very very worn out, needs changing, but i cant see how that would create this problem.
wanted to know if you guys had any idea before i tried to change the rollers assembly (i have the spare parts, just a bit afraid of the mechanics and to mess up the timing). i am not finding much on this on the web.
thanks !
i am encountering an issue with a RP3700, and running out of ideas to try and fix it.
upon paper feed, the paper gets folded, crosswise, on the top part of the page. it feeds, prints and ejects fine most of the time, but the print is folded. (intensity of the fold varies, from very light to very marked, sometimes feeding paper totally folded and thus not printing everywhere on the page)
from what i researched so far, it seems to be a problem with the timing between the first and second paper feed area. happens with every drum, and apparead during the printing of a book (pretty heavy duty), machine was running smoothly until then.
it very much looks like the issue on this thread : but the solution proposed there does not work...
the first page fed is sometimes spared by the fold.
there is no vertical position issue on the prints that do come out.
- there is no physical obstacle or anything, i can run a piece of paper by hand without any issue.
- i have tried to run standard paper with the paper width lever set on "card" (as advised in the other thread), no changes
- tried every possible combination of the force and angle dials
- from the manual, what i have found is that you can adjust the off angle for the paper feed clutch if you are getting too much buckle. i tried to adjust on different values (test n°481), no changes.
- in the back, everything looks fine from what i can tell (screws, timing of cams, etc.). i found that the beak of the pf clutch was no longer engaged in its locking plate, i put it back, but no changes.
- spinning the timing roller assembly ccw (by hand), i compared the movement on another rp3700 we have, i feel like it is a little looser. people using the machine have been unjamming paper in the feed area without using the little lever to release the rollers, probably damaging them ? could that be the issue ?
other thing identified in the machine : the collar separator is very very worn out, needs changing, but i cant see how that would create this problem.
wanted to know if you guys had any idea before i tried to change the rollers assembly (i have the spare parts, just a bit afraid of the mechanics and to mess up the timing). i am not finding much on this on the web.
thanks !
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