I have a c364 that refuses to print in black. Internals, customer network, faxes. All blank. Printing a demo page... the colors are beautiful but the blacks are just missing. Drums turning but no image is being laid down. I had a C203 do the exact same thing about 5-7 years ago but don't remember my solution. I'm going to try firmware but I was looking for other areas to look at while I'm on site. I appreciate your help!
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Re: C364 not printing black
jig the door and WTB and shine flashlight on drum during copy see if it prints a black streak.
you said the drums are turning, ho 'bout the DV unit? does the mag roller have a nice "brush" on it or are there bare spots?We know a thing or two because we've seen a thing or two.
The medication helps though...Comment
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Re: C364 not printing black
Check Developer unit. Maybe one of the gears on the back of the unit is bad so that the developer unit isn't turningComment
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Re: C364 not printing black
Or a faulty DV clutch: wipe a little dev away from the mag roller so there's a free sport, then re-insert to the machine, let it run and then check if the mag roller turned. If the spot is thill there it's proably a drive or clutch related issue.Comment
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Re: C364 not printing black
If anything mentioned fails I would be looking at black developer unit solenoid SD4 (A161M20300 Flapper solenoid).A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.
Blessed are they who can laugh at themselves, for they shall never cease to be amused.Comment
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Re: C364 not printing black
If everything mentioned above doesn't solve try to jig front door, pull half-way the charge cleaning rod for K and do a copy/print. You should get a black horizontal line in the same position where the cleaning tip has been pulled to revealing that the HV is suppliyng chargeDefects are simple, our mind is complicatedComment
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Let us eat, drink, and be merry, because tomorrow we may die!
For all your firmware & service manual needs please visit us at:
www.copierfirmware.co.uk - www.printerfirmware.co.uk
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Re: C364 not printing black
I totally agree....this is basic fault finding. Whenever I've had this problem, it's been the gear on the drive unit that meshes with the DV unit and the one on the end of the DV unit have both failed....I replace the DV unit, and strip down the main drive unit & replace the gear....haven't purchased a new drive unit for years....Tip for the day; Treat every problem as your dog would.....If you cant eat it or f*ck it....then p*ss on it & walk away...Comment
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Let us eat, drink, and be merry, because tomorrow we may die!
For all your firmware & service manual needs please visit us at:
www.copierfirmware.co.uk - www.printerfirmware.co.uk
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Re: C364 not printing black
Agree!
Solenoid which releases and stop black dev clutch would be my first suspect on a high meter machine (or old one).
C364 is 7 years old at least.
Open PWB box and take out the solenoid.
Remove old sponge (od what is left of) and glue a thin layer of cardboard.
Better than new!Comment
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Re: C364 not printing black
Under what circumstances should the unit brake, what is its function?Comment
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Re: C364 not printing black
Its function is to release and stop rotation of developing unit at specific time.
Sponge on solenoid acts as isolator, if it's worn timing is wrong.
Nothing is broken, solenoid works, all you have to do is to repair the isolator (sponge) with a piece of cardboard.
Or buy a new part but it will last only 5-7 years.Comment
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