mp3351 lihgt copy scanner

[en.]

problem is light copy and & unclear from ADF+exposer class

but its ok from printer

i cleaned all class and shater &lens but its still bad copy from scanner

note : pm part and counter (89000)

any adjust or suggestion

best regards

[greenbean]

Re: mp3351 lihgt copy scanner

problem is light copy and & unclear from ADF+exposer class

but its ok from printer

i cleaned all class and shater &lens but its still bad copy from scanner

note : pm part and counter (89000)

any adjust or suggestion

best regards

Replace drum and developer.

[copyaction]

Re: mp3351 lihgt copy scanner

Also if it is more to one side of the copy you may have to lift up on the front left side of the scanner section.
People leaning on the front left corner tend to cause this.

[slimslob]

Re: mp3351 lihgt copy scanner

Turn off main power and unplug from wall. Clean all mirrors in the scanner section and while you have the exposure glass off check for dust under the white reference. Plug the power cord back in and turn on. Run User Tools - Maintenance - Auto Color Calibration.

[CRISTIAN MULLER]

Re: mp3351 lihgt copy scanner

Turn off main power and unplug from wall. Clean all mirrors in the scanner section and while you have the exposure glass off check for dust under the white reference. Plug the power cord back in and turn on. Run User Tools - Maintenance - Auto Color Calibration.

I never see this option in a MP 3351, could you post this wrong or has this option indeed?

[subaro]

Re: mp3351 lihgt copy scanner

Replace drum and developer.

Why would you replace drum and developer if the prints from pc is good ?. Two likes agrees with you. whats the reasoning behind this. For me, this should be a scanner related issue.

[greenbean]

Re: mp3351 lihgt copy scanner

Why would you replace drum and developer if the prints from pc is good ?. Two likes agrees with you. whats the reasoning behind this. For me, this should be a scanner related issue.

The original post states the pm and counter at 89k. Recommended replacement is 60k for drum and developer. This model is kind of strange when drum and developer reach end of life. One symptom of weak drum/developer is light copies from glass/scanner. Although the prints appear to look good at first glance, they will not compare to prints from new drum/developer. If light copies continue after this then troubleshooting the scanner would be justified but not before. I was burned by this exact issue and convinced myself the issue was in the scanner when is was just simple pm parts needed.

[slimslob]

Re: mp3351 lihgt copy scanner

I never see this option in a MP 3351, could you post this wrong or has this option indeed?

Sorry, I see a lot of color machines with light copies because who ever set them up never ran ACC. The cleaning the mirrors still applies. Dust on the mirrors makes the white reference look like some shade of grey. This shifts the entire grey scale. The more the dust, the lighter the copies get.

[slimslob]

Re: mp3351 lihgt copy scanner

The original post states the pm and counter at 89k. Recommended replacement is 60k for drum and developer. This model is kind of strange when drum and developer reach end of life. One symptom of weak drum/developer is light copies from glass/scanner. Although the prints appear to look good at first glance, they will not compare to prints from new drum/developer. If light copies continue after this then troubleshooting the scanner would be justified but not before. I was burned by this exact issue and convinced myself the issue was in the scanner when is was just simple pm parts needed.

Ricoh recommends 60K to be able to sell more drums. The drum usually goes to between 90K and 110K before you start getting drum spots. Spots start near the ends of the drum.

[allan]

Re: mp3351 lihgt copy scanner

Is the machine setup to scan?. Do a full grayscale scan at high res, if thats light its a scanner problem.
Are you doing the scans from the platen or the ADF?

[greenbean]

Re: mp3351 lihgt copy scanner

Sorry, I see a lot of color machines with light copies because who ever set them up never ran ACC. The cleaning the mirrors still applies. Dust on the mirrors makes the white reference look like some shade of grey. This shifts the entire grey scale. The more the dust, the lighter the copies get.

FYI the mp 3351 is a bw box

[allan]

Re: mp3351 lihgt copy scanner

FYI the mp 3351 is a bw box

But thats got nothing to do with color. He corrected himself already.

Go clean the reference patch.

And start looking for a drum and developer

[subaro]

Re: mp3351 lihgt copy scanner

The original post states the pm and counter at 89k. Recommended replacement is 60k for drum and developer. This model is kind of strange when drum and developer reach end of life. One symptom of weak drum/developer is light copies from glass/scanner. Although the prints appear to look good at first glance, they will not compare to prints from new drum/developer. If light copies continue after this then troubleshooting the scanner would be justified but not before. I was burned by this exact issue and convinced myself the issue was in the scanner when is was just simple pm parts needed.

Thanks for repying to my question. I don't work on this machine really, but my i would think the troubleshooting method or symptoms for copiershould besimilar with some minor diffrences. However, what i usually do, is print a file that i use as a test print or template and check the output. from experience i would tell if that unit drum/dev/charge roller or corona is ok. OR do internal print test. actually i do this first. IF these are ok, there is no way that the drum/dev can cause light prints when copying. a failing ccd unit and or lamp can also contribute to poor or light copies [ colour is more tricky, but the internal test prints should show the health of the pm items]
Many say they clean mirrors and glass, but how was it done and what was used to clean also comes into question.
I have learned not to trust meter reads'but ina forum like this, i would want to know that and like you will suggest solutions as to counts. But i can't take away the most important, which is, you know the machine and the symptoms. thanks again i am learning these machines from you guys as the threads continues.

[copyaction]

Re: mp3351 lihgt copy scanner

The fact is on this series and including the MP2550 you can have light copies, and fine internal prints and printing from the computer.
Never saw a good reason for it but have myself installed a new PCU and then copies are perfect.

[Debs1964]

Re: mp3351 lihgt copy scanner

IF these are ok, there is no way that the drum/dev can cause light prints when copying.

Not true on this range of machines, I've come across it where at first glance, prints appear to be fine, but copies are faint. If you look closely at the prints though, you may find that the solid areas are not quite as solid as they could be. Replacing drum/dev can indeed cure this problem