PLEASE HELP!!
I had this same "loud clicking" issue after I
replaced my first toner cartridge. The magenta ran out, I ordered from a
discount online store, installed it, then had the clicking problem while
printing (though the print quality seemed ok). I compared the old, empty
cartridge that came with the printer the new one, and found them identical
except the new one had a little square transistor board on the surface that is
inserted into the printer, next to the round, black thing, which I think are
gears... like a little round black flywheel. I noticed the old, empty cartridge
had no such board, but just a square hole instead. What was happening was this
little circuit board wasn't letting me push the cartridge in far enough to
allow the “flywheel” to fully connect (or at least they couldn't connect
without continually disconnecting too, which was causing the loud clicking
noise). So I got a little knife and pried off the circuit board, and then took
out this little grey, spongy, sticky thing under it. I reinserted the cartridge
and noticed it slid in just a little bit more (maybe 1/8 in. more). But then
the printer didn't register I had a magenta cartridge, so it wouldn't print
anything for me! So I put the spongy thing back in, then the circuit board. But
when I put the circuit board back in, I pressed it in about an 1/8 in. past
being flush with the plastic it was resting on before... so about 1/8 in. past
where it originally was. So, now, instead of being stuck, flush with the
plastic, it sort of floats on this spongy thing and goes in slightly when you
push on it with your finger, creating a small, square hole like the original
cartridge I examined. Perhaps this is how it's supposed to be but it had a
manufacturing defect. Anyway, I reinserted it again and it slid in just a bit
further than originally. It works fine. No more clicking noise while printing!
So obviously the little black gears are now firmly in place. Hope this helps.