I get a black line printed on every 5th or 9th page (I figure it is actually every 4.5 pages but misses the actual printed page) top to bottom on an A4 in portrait... It is obviously a roller somewhere along the line and all of this after I did some serious printing the other day... at which time it developed a knocking in what appears to be the top left of the machine somewhere...
Any ideas ?
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Hi, thin black lines are most likely (but not definitely) caused by something in the black PCU (photoconductor unit), either the drum or the charger. Replacing the black PCU will likely get rid of your lines. The Ricoh code for a black PCU if you don't already have one is 402448.
sounds to me like there is damage to the charge roller in the black pcu. these can be dissasembled and the charge roller inspected/cleaned but the blk drum units are inexpensive enough its probally just better to replace it
probably only when printing in colour? Black only, is ok right? It needs to have it's line adjustment procedure done. This is a series of complicated trial and error adjustments performed in service mode that the individual colours are adjusted based on printouts generated by the printer. Can only be adjusted by a service tech with experience with this adjustment.