Have a HP-4650 that is giving me a C.Q. problem. When you print out a config page the area where it is suppose to be grey is jet black. Example. The grey bar at top of page that say configure page is not grey it is very black. You can read configure page because it is white letters inside the black bar. Down the page you have smaller grey bars with , printer information , then Event log, Installed personalities and options, Calibration information, color density, etc. , well sense the greys are now black you can't read those words . The words on those grey bars are in black wording and with the grey bar now pitch black it's impossible to read it. Why is this printer making the greys BLACK? OEM carts, swaped them out. I'm at a lost. It was working ok and I added more memory and then this problem started. It comes and goes but is there most of the time.Connection?? I hope you understand what I'm talking about?Thanks.
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Re: HP color laser jet 4650.
I work on alot of these and never had that problem. I would try swapping laser units, see if it makes a differences. -
Re: HP color laser jet 4650.
Can you post a sample? =^..^=If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=Comment
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Re: HP color laser jet 4650.
Mr Bill - Do you need the manual? Send me an email.
PaulComment
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Re: HP color laser jet 4650.
Maybe try running a calibration. If there's absolutely no change, do nvram dump and do the calibration again. On some of those color machines, I remember, the calibration stops having effect until you dump the ram. If it still doesn't help, I would change the transfer unit. A bad transfer unit will screw with the calibration.Comment
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Re: HP color laser jet 4650.
Thanks for the replys.Comment
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Re: HP color laser jet 4650.
This is probably stupid, but it kind of sounds like a failing in the black developer, maybe bias or the control of such. So you might investigate the high voltage area of the machine, or maybe check to see that the controller is OK and properly seated?
(Well, at least if all I did was add memory to a machine and has something like this happened, I'd check the controller first.)Comment
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Re: HP color laser jet 4650.
I would also suggest updating the firmware.Comment
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