Copies seem washed out, machine has 177K on it so I started by changing the MC, then the drum, TR and finally the DV unit, no change. I cleaned the optics just to see if that would make a difference but it did nothing. If I set the machine for manual exposure and darken it the copies come out fine, but the internal prints are light no matter what I do. This one is located in a company with 5 of the same machines all delivered together just over a year ago, and 2 others are having the same problem, just not as bad. All the machines have the firmware up to date and I've tried different paper, customer is bitching that the old CS-5035's were better machines, I agree. Any ideas? Thanks.

A user didn't by chance get poking around where they shouldn't have been and turned Eco Print mode on did they?

Did you reset the drum & developer counters ?

OEM TONER? ECHO: elheather about Eco print mde.

The only other thing I can think is that you have an issue with the Transfer Bias Voltage not being applied properly, if at all.

Thanks for the replies, OEM Toner, ECO is off, counters were reset when I put the new parts in, as I said it made no difference. I tried changing the settings in Sim 101, and that made no difference. The only thing that makes the copy darker is manual exposure, but internals are still light. Machines are a week or two out of warranty so I'm reluctant to start changing boards. Does anyone know of a way to lock in the manual exposure settings? I thought this was possible on some machines but not on the F3 as far as I could tell? Thanks again everyone.

Check Maint. Mode 081 for Adjusting the Correct Exposure. All defaults settings are 0, as a temporary fix you may be able to adjust these in order to darken the image. I would still look into possible problems with transfer bias voltages. Also check 093, more adjustments for density can be made, default setting is 0. Also check Maintenance Mode 101, these are your high voltage settings, the Transfer Control Voltage setting should be defaulted to 130, you may also want to look at the Dev Bias and Dev SBias settings and also the Dev Duty settings, these all play a major role in the lightness or darkness of the image. If these settings are all at their default values, I would look into the connections for the DV unit and the Transfer unit to make sure that the applied bias voltages are indeed present to all these units. You may have a bias voltage supply problem.

This message has been edited. Last edited by: elheather,

There are two places for the customers to turn on Eco print on these machines, I was tricked by this a month ago, I was fortunate that they had two machines I could swap parts out of. One is in function defaults and the other is in the print mode, otherwise I would guess it would be the laser unit if you have swapped the drum, dev, and TR.

Wow, other machines doing the same thing at same location. That's too strange. The only thing I can contribute is a service bulletin #6905 that gives specific instructions for adjustments in U101 when "If you encounter poor reproduction of dots, thin line of half-tone image, change the value in Maintenance Mode U101" The whole procedure can be found in the Knowledge Base QA Database Search section in the technical resources tab. Search for KM-5035 then go through the pages until you find the QA number.

Thanks for the help, I will go back to the account next week and give some of these suggestions a try. I will post any results. Have a Good Weekend and a Great Fathers Day!

What was the out come for the cs-4050 lite copies?
looking @ latest Q/A they suggest new dev clutch or new style t/s Roller also modifing toner clip where id does not overun. I have seen like drop in copies on one 4050 . just wanted to see what helped.

I tried everything suggested, two machines still have lite copies. I really don't like the F3's.

H.V Power supply?

Has there been a resolution to this problem? I have a 5050 doing the exact thing. The adjustments for sim 101 are maxed out. and still the internals and copies are light. Greyed solids, etc.

I haven't fixed them yet, waiting for a trade in to take some parts out of to do some swapping. HVPS and Laser are about all that is left for me to try.

Have you tried a firmware downgrade yet? The last version with minimal problems is v. 2.40 6-29-09

No I haven't, why do you think that will help? The other 3 machines at the account all have the same levels as the 2 with the light copies. I appreciate the feedback, thanks.

I don't know if its a good reason, but it is a reason.

About three weeks ago several (but not all) of my Falcon IIIs stopped receiving facsimile. List U670 showed a ton of U01110 errors. Then just by coincidence I noticed that v. 2.44 firmware was supposed to fix this exact problem. Well it didn't, but until they came out with 2.45a I have been successfully using v. 2.40.

Firmware versions 2.41 thru 2.44 all present the fax Rx issue.

And what do you have to lose? =^..^=