Question about HP Photosmart 4180 All-in-One Printer
Assuming that you have ruled out strictly mechnical issues, the next common problem in my experience is the optical encoder system. Most HP inkjets have a long, thin optical encoder strip that the moving carriage reads to determine its position. This plastic strip runs the width of the printer inside, usually behind the carriage. Several problems can occur -- one, it can become broken or pulled off of its mounting tabs at each end, two, over time it can become very dirty with stray ink. Stray ink can also obscure the optical sensor in the carriage that reads the strip.
There is a similar one elswhere in the printer, but in the form of a wheel or disc. This is how the printer determines movement of the paper through the machine. Usually this one can be obstructed by paper chaff over time, or stray ink build up. Since it isn't a long strip, it rarely is a mechanical issue with the encoder wheel.
In any event, failure of this device for any reason means the printer loses track of the print carriage movement and thus can report a "carriage jam" error. Inspection and cleaning of this can fix this problem, if there are no other obvious mechanical issues that jam the carriage (like a stray piece of paper inside, etc.).
Posted on Aug 20, 2009
Plz resit the cartridge, if the problem persists than you have to send it for repair
Posted on Jul 24, 2008
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