GR 3750 Print Head Issues?

[Guest]

I am a new owner of an old GR3750. When I had a paper jam and tried hard to remove it, I started having problems of master misfeed. When that was resolved, I discovered that, the print was only coming out on some parts of the papers and the rest blank. A local photocopy repairer is telling me that it is the print head. What should I do friends?

[TECH BOY]

Hi,
Try making the test sheet ( checker pattern) from test mode.This print test is from memory so it will eliminate the scanner.Also check to see if the thermal head is latched down properly.Take the current master off by hand and check to see if there is any pieces of old master underneth.And last try a new roll of masters ,I have seen some bad master usually the generic type.If it is the thermal head you will want to find a used one and make sure you calibrate it correctly.
Good luck,
Tech boy

[baapsystems]

RISO GR3750

Dear Tech Boy, Thank you for your response. A test page was actually printed and it came out blank!! Nothing was printed on it. But when we produced a master, half of the page has prints, middle is blank and small end has print. Kindly help again. Peter

[RRodgers]

Dear Tech Boy, Thank you for your response. A test page was actually printed and it came out blank!! Nothing was printed on it. But when we produced a master, half of the page has prints, middle is blank and small end has print. Kindly help again. Peter

Pull the drum out and take the master off the drum (both of them) you probably have one master on top of the other. The first one is folded over and didn't come off when you got the master misfeed problem.