thanks, i'll definitely try that. i knew about the periodicity trick, but it doesn't match any of the rollers (i have the "forbidden" manual which has that data) though it is periodic as i recall (i haven't looked at it for a while, too many health problems and no urgent need for it before, though i do need to fix it within a few months now since i don't have access to the other printer i did have access to anymore).
definitely not the fuser, i looked at that and it looked fine, also the problem started very suddenly after a bumpy car ride so i strongly suspect one of the controllers or power supplies, possibly a cracked solder joint on a capacitor or something or a failed component. being a tech, i'll probably try component level trouble shooting and module swapping (i.e. since i have spares i'll try them, then i'll try and fix the original module most likely. spares will eventually dry up and when it worked it worked very well i thought). it's also unlikely i'll have the $$ to buy a new laser printer any time soon, besides which i'm one of those people who just don't throw things away if they are repairable, and when i do i strip them and recycle what i can (i even recycle steel, even though they don't pay for it in less than ton quantities they will still accept it). this is partially because i've worked on equipment at the dump and at coal mines, and we don't want any more of those if we can avoid it! thanks for the suggestions, that should help me track it down to a specific controller/output voltage (i also do have a good high voltage probe which will help if i fire up a couple of the other units for comparison). of course for me, it also helps that my dad fixed copiers and i learned a lot about the xerographic process so i know how it's supposed to work (a printer is basically just a copier that uses a laser/leds to form the image rather than an original with lenses and lights). Kathi Anderson wrote: ------ > Snip > Interrupting a print cycle and inspecting the photo sensitive drum can help > isolate the cause of print quality issues. If the image on the surface of > the drum is good, then the fault is after the drum, probably in the fuser > assembly, or transfer corona or maybe the AC power supply. > Also, if the image defect repeats in a definite measure, then it indicates > one of the rollers. Depending on the measure, the roller can be identified. ------------ -- <http://www.informationclearinghouse.info/article3267.htm> proof that the U.S. media is now state controlled! Ask your' local tv station why the hell they aren't airing the news any more! Our system of government requires an informed public, with their eyes open. -- G-List is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- We have Apple Refurbished Monitors in stock! | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> G-List list info: <http://lowendmac.com/lists/g-list.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/g-list%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
