Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site ucbvax.BERKELEY.EDU Path: utzoo!decvax!ucbvax!laser-lovers From: laser-lovers@ucbvax.UUCP Newsgroups: mod.computers.laser-printers Subject: Re: (none) Message-ID: <8512050152.AA00925@a.ARPA> Date: Wed, 4-Dec-85 20:52:37 EST Article-I.D.: a.8512050152.AA00925 Posted: Wed Dec 4 20:52:37 1985 Date-Received: Thu, 5-Dec-85 20:33:46 EST References: <8512021824.AA07964@umd-cs.UMN.uucp> Sender: daemon@ucbvax.BERKELEY.EDU Organization: Los Alamos National Laboratory Lines: 30 Approved: laser-lovers@washington.arpa Steve, Yep, I've been there. It took the local HP service tech a couple of weeks to track it down. They should all know by now. The complaint is fairly common. The problem is apparently due to a warped feeder guide assembly. This is the black ribbed thing that is between the transfer corona wire assembly and the fuser assembly. Mine was fixed by replacing this assembly. (After they had tried replacing nearly everything else.--In fact, I think they tried it because it was the only thing they hadn't replaced by then!!) Anyway, they gave me a loaner because it was taking so long. Pretty soon the loaner developed the "smudgies". I fixed it myself by removing the feeder guide assembly (4 Phillips head screws). The assemby consists of a plastic piece (the ribs) and an aluminum piece whose strips fill the gaps between the riribs. The cure was to deform the sheet metal part slightly by pushing the piece from behind, up through the ribs, so as to be closer to the paper as it passes by. This ended the smudgies on that printer. A follow-up conversation with the HP tech recently elicited the informat that he believed that the problem arises because all four screws are snugged down to hold the pieces firmly. He noted that the two right hand screw holes were really elongated and that the purpose for that was to permit the thing to expand slightly. He claims that the two right hand screws should not be tightened fully and the problem will not occur. I don't know if that is valid or not but two machines were cured as described above, one by replacing and one by bending (slightly). Let me know if this works for you. If it does perhaps we should post the info to the net. Good luck, Jim Potter jp@lanl.arpa