hp m4345

[Users Tech]

hello everyone,

need help with hp m4345. copying from top glass or adf and prints are very light. i replaced new toner and tried replacing toner from another machine that has good printouts but problem is the same, light copies and prints, even if i adjust it to the darkest. i've cleaned the top glass and did scanner calibration. do you think this is a laser problem? what else do i need to do? please help.

[theengel]

Re: hp m4345

What does the config sheet look like?

[Users Tech]

Re: hp m4345

What does the config sheet look like?

black copies becomes gray, very light results. sorry don't have sample copy or print.

[theengel]

Re: hp m4345

So when you print a config sheet, that's light also. What I mean is, it's not just stuff from the glass? Not just copies, but anything printed?

[Wild Bill]

Re: hp m4345

"problem is the same, light copies and prints"


Transfer Roller

[Users Tech]

Re: hp m4345

So when you print a config sheet, that's light also. What I mean is, it's not just stuff from the glass? Not just copies, but anything printed?

yes that is correct. anything that comes out of the machine is very light.

[Elmtech]

Re: hp m4345

Check if the economode setting is on. It can make prints look very faint. Also try an engine test if it comes out ok its a formatter or setting issue. If it is bad then you can look at hvps, laser unit etc.

[theengel]

Re: hp m4345

Yeah, my first guess would be transfer.

[ucinn]

Re: hp m4345

"problem is the same, light copies and prints"


Transfer Roller

Transfer roller is first bet, possible dirt on laser glass also can cause this. I would try those two first

[Users Tech]

Re: hp m4345

replaced transfer roller, problem solved. many thanks to all.

best regards!