c7000 duplex registration drifts randomly

[zubinn]

i have a c7000 machine if you print 100 sheets it will duplex okay.

if you print a longer run maybe 500 sheets, within the 500 sheets there will be random sheets where the duplexing is off, drifts randomly 5mm.

i believe it is a mechanical issue. and it is only on the duplexed side. registration for simplex is fine.

what should i be doing. some check list to systematically figure out what needs to be changed would be very welcome.

[habik]

i have a c7000 machine if you print 100 sheets it will duplex okay.

if you print a longer run maybe 500 sheets, within the 500 sheets there will be random sheets where the duplexing is off, drifts randomly 5mm.

i believe it is a mechanical issue. and it is only on the duplexed side. registration for simplex is fine.

what should i be doing. some check list to systematically figure out what needs to be changed would be very welcome.Have you tried adjustments on duplex reg loop?

Sent from my Mi A1 using Tapatalk

[Tech Helpdesk]

i have a c7000 machine if you print 100 sheets it will duplex okay.

if you print a longer run maybe 500 sheets, within the 500 sheets there will be random sheets where the duplexing is off, drifts randomly 5mm.

i believe it is a mechanical issue. and it is only on the duplexed side. registration for simplex is fine.

what should i be doing. some check list to systematically figure out what needs to be changed would be very welcome.

Check the duplex registration plate, if it worn it will cause wondering registration issues