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Roland BN-20 Wiper Problem

Posted: Fri Nov 17, 2017 8:56 pm
by derekeichelman
Hi, thanks for the help in advance. I have a Roland BN-20 and it prints great; however, every once in a while, the rubber wiper will get stuck in the up position in the middle of a print and hit the printhead as it moves back and forth. When the wiper is down, the printer prints perfectly. When the wiper hits the head, the print is full of black streaks. I can open the cover, manually depress the wiper, close the lid, and resume printing. Iv'e cleaned the machine/wiper area/gear, etc and it doesn't seem to help.

Has anyone else had this issue? If so, how did you fix it? Thanks again for any assistance.

Re: Roland BN-20 Wiper Problem

Posted: Fri Nov 17, 2017 9:49 pm
by mrtn
Your wiper origin sensor is probably dirty or there's some unusual play in the movement of the wiper assy.

Ever had any error messages?

Re: Roland BN-20 Wiper Problem

Posted: Fri Nov 17, 2017 10:00 pm
by derekeichelman
Thank you for your response. I have never received an error message and I can't find any play in the assembly. Everything seems pretty solid. Where is the wiper origin sensor on the BN20?

Thank You

Re: Roland BN-20 Wiper Problem

Posted: Sat Nov 18, 2017 12:20 am
by mrtn
In the wiper assembly. Usually the machine would throw an error code if there’s something wrong with the sensor but yours may be just at the limit of normal operation due to some absurd condition.

Re: Roland BN-20 Wiper Problem

Posted: Sun Nov 19, 2017 7:11 pm
by TDR
Mine also does the same some times. I either manually move it to the correct position or if it really bugs me I give the spring mechanism and the cap top area a good clean.