[CQ] Wavey Solids on Ricoh 3245

[nmfaxman]

Changed Magenta DV and drum only has 2k on it.
I cant see any marks on drum and drive seems ok.
I have seen this on older Minoltas when dv brush was too high.

Any ideas??

[TonerMunkeh]

Could be a bad dev unit. You got one you cal pull out of another machine for comparison?

[jonhiker]

X2 on the probability of a bad dv unit. i would also check the transfer belt and cleaning unit.

[Jomama46]

I recall a bulletin that says the affected developer clutch is staying on too long and gradually losing developer which is causing the lines. So the problem may go away with a new dev unit but replacing the clutch will solve the problem. Both need to be done IMHO.

[nick40]

Was this the original problem that made you change the developer and drum?
I agree with Jomama46 if when you changed the developer the problem went away and returned after 2k it might be your Mag dev clutch.
I know from experience that at about 4K the problem is so bad that you will see diagonal void bands.

[nmfaxman]

Same problem before and after DV unit. Can't see anthing on drum or transfer roller to cause it. Swapped cyan drum same problem. Only on magenta so can't be transfer belt.

[tcs04]

Check out the following... I posted the RTB for the Dev clutch problem

http://www.copytechnet.com/forums/ricoh-savin-gestetner/47071-savin-3528c-aficio-3235-b178-heavy-background-black-while-printing.html

[tcs04]

Also, Check to see if the machine will complete a line position adjustment. Check the drive to the large white gears for magenta / cyan. we had one where the NYLON gear wore out the BRASS gear on the cyan / magenta drive motor (!!!) That was an AF2232.. but similar. It looks like you have a slight problem with cyan as well.

[nick40]

Same problem before and after DV unit. Can't see anthing on drum or transfer roller to cause it. Swapped cyan drum same problem. Only on magenta so can't be transfer belt.

It could be the magenta rollers on the transfer unit. I would try a transfer unit just to rule it out.

[teebee1234]

Also, Check to see if the machine will complete a line position adjustment. Check the drive to the large white gears for magenta / cyan. we had one where the NYLON gear wore out the BRASS gear on the cyan / magenta drive motor (!!!) That was an AF2232.. but similar. It looks like you have a slight problem with cyan as well.

I agree, looks more like a jitter problem.

[nmfaxman]

Swapped drum with cyan, ran line positioning adjustment and listened for noises with back cover off.
I do need a cyan drum, line positioning passed 3 times and no noises in the rear.
Transfer roller looks just like the others and still smooth.
I can't feel any jitter when I touch drum or DV unit.
My next step is to put a strobe light to it and see if there is any slipping or just pull it into the shop and start pulling gears.
Thanks for all the input. I will post what I find.

[tcs04]

Check the brass gear on the motor! the cyan drive has a relay gear between the motor and large gear (?) which would dampen the problem. The Magenta gear drives directly from the motor.

[nmfaxman]

Update.....
New DV clutch, swapped drum drive gears after brushing the threads out.
Checked for loose connectors, loose screws and gear slippage.
Still no solution.

I am not trying to BS anyone.
I just have a CQ pattern I have never seen before and need to fix it or I lose the sale and have a POS that is just good for parts that cost me $900.00.

Some one told me it could be the laser mirror adjustment, but the I think the line position adjustment would fail.

I should just drop back 5 and punt.