lexmark 264 scanner failure 844.02

[eliaso]

I'll confirm that. For me it was a Brother fax, around 1992.

A fellow tech had cleaned the optics, for fuzzy images, and ended up with black prints. Then it came to me. It took about 3 hours of fiddling to get a little blurry image in one of the corners, then a few dozen minor nudges and two more hours to get it aligned. If you see painted screws, you won't want to touch them, ever, for any reason, unless you're scrapping it out. =^..^=

Hello
I cleaned only the mirrors I don't touch the eye of the lens

[eliaso]

Was this machine working without problems before the cleaning ?. if yes, then you have to retrace your steps in removing the parts you removed and check for damaged flat cable, especially the ends where the contacts are. see that the contact metal traces are not raised of the cable or bent, sometimes this happens.
Also, his statement of seeing a open spot and installing the cable there is very scary, i would not want him to install a power supply and then what cross fingers.
This is what happens when techs refuse to look at the service manuals when they are not familar with a procedure.
I think his problem is when he pulled out connection to the lamp. if not put back correctly, then for sure his error message.


this is from the service manual for this machine

844.01 844.02
Front scan module lamp level too low: front Monochannel, Front Color channels, Front Red channel, FrontGreen channel, and/or Front Blue channel is detected to have low lamp level.

hello
the copy was bad ( so light )the print out from PC was Ok
the flat cable contacts are good and no damage in it ,i saw a free space in the connection of the main board where connect the flat cable ,so...maybe incorrect connection maked the problem
i reset it, it work from the menu ( make test configuration ) but when make copie the error shown and it stop again

[subaro]

844.xx Scanner exposure
lamp failure
The flatbed scanner exposure
lamp has failed.
Replace the exposure lamp.