Light copies only in the morning MP6001 and Aficio 2075

[Codex]

Hello

I have a very very strange problem, we have to customers , one with an MP 6001 and the other with an Aficio 2075, both told me that the machines make intermittent light copies ( blurred areas on the copy) , but only in the morning , for approxx 2 or 3 hours, and then everything turns ok again (perfect copies).......(!)
Both machines have an ORIGINAL Ricoh D58 Drum........i changed in both machines Charge Grid and corona Wire, i cleaned every exhaust air filter, changed Developer, and cleaned everything .I believe in an humidity issue or some charge problems on the Drum, i write from Sicily, our weather is not like in GB or Germany......so guys...ANY IDEAS?????

[francisco]

Hello

I have a very very strange problem, we have to customers , one with an MP 6001 and the other with an Aficio 2075, both told me that the machines make intermittent light copies ( blurred areas on the copy) , but only in the morning , for approxx 2 or 3 hours, and then everything turns ok again (perfect copies).......(!)
Both machines have an ORIGINAL Ricoh D58 Drum........i changed in both machines Charge Grid and corona Wire, i cleaned every exhaust air filter, changed Developer, and cleaned everything .I believe in an humidity issue or some charge problems on the Drum, i write from Sicily, our weather is not like in GB or Germany......so guys...ANY IDEAS?????

try to turn on the heaters

[slimslob]

Check if there is toner residue build up on the thermistors.

[Codex]

I turned on the heaters in both machines....

[nmfaxman]

I have seen sunlight on a copier cause weird problems.

Check the environment.

[Codex]

One machine is near a Windows.. But no chance for sunlight to reach inside machine.... The other one is inside a copy-shop.... No window near the machine...... Nobody believes in a humidity issue?...... That causes bad drum charge or something??....or in a defect drum?.

[Bantams]

Sounds very much like humidity building up in the machines drum area over night are they switching them off or leaving them on in a un ventilated room over night?

[Codex]

They switch the machine of... But i activate the heaters that turns on when the machine is switched off...... Is it possible that these machines suffer humidity?.....i turned on the fans after the firmware update (there was a tech bulletin about light copies) but the problem starts AFTER the update... I don't think that this is the problem, but i have to find a solution...

[allan]

please post an image.

Get there in the morning when the machine is acting up and stop the image under the drum that would give you a chance to check if its charge, transfer or fusing in one step.

The you can strip the machine to check for moisture even before you switch it on.

[Polo-022]

Bantams absolutely hits the target!
Obviously it's a blurred not a light print and a known problem discussed at previous posts.