Sharp MX 623 Overtoned?

[Lbcoaster]

Run into a couple of MX 623 and 753 where the toning is kind of hot(no background but rich) and when customer copies a large solid jams in fuser, new fusers with most current updates. Any suggestions on toning down? Have tried new developer, Calibrate 25-2 with door open before start...

Thanks
Steve

[blackcat4866]

Re: Sharp MX 623 Overtoned?

De-toning the developer will help to a certain extent, but first I would check to make sure that you've got a 3mm to 3.5mm leading edge void and a 4mm trail edge void. That will make the biggest difference. As a manufacturer, Sharp makes it particularly difficult to do this adjustment. If you can follow the procedure in the manual ... well, kudos to you. On a quiet day I took a Tiger, and tried to follow the procedure in the manual to the letter. My conclusion? It can't be done that way. If you're at all interested, I figured out a particularly repetitive and illogical way to get the voids adjusted to where I wanted them on Cougar, Tiger, Jupiter, Dragon I. It just might work on Dragon III. Send a private message with email destination if you'd like that document.

Another indication of overtoning is when the waste toner compartment of the toner cartridge fills before toner runs out. If you're getting this, I would clean the face of the toner sensor, replace the developer, and run 25-2, 24-5.

As a simple test, you might enable Toner Save. In my experience though, endusers don't much care for crappy image quality.

If the source of your heavy fill originals is small-sized originals or copied originals made with the lid up, you have more options. Perhaps you can convince your enduser to use Edge Erase set to 10mm to 15mm, to remove some of that unnecessary black border.

=^..^=

[Lbcoaster]

Re: Sharp MX 623 Overtoned?

Thank you for the info, I did check the toner save and both are already checked, also did the tech bulletin to increase the web cleaning in sim 43-24 to 5, for now I defaulted to photo mode until I can figure this out, print is raised and when you do a list print you can see the toner has blown a little along the edge line most normal copies do not jam but if you get a solid larger the a square inch it will jam. you cannot get a sky shot thru .

My email is Lbcoaster@aol.com

Having the same issue with a few 753's also...

Thanks
Steve

[igi]

Re: Sharp MX 623 Overtoned?

Thank you for the info, I did check the toner save and both are already checked, also did the tech bulletin to increase the web cleaning in sim 43-24 to 5, for now I defaulted to photo mode until I can figure this out, print is raised and when you do a list print you can see the toner has blown a little along the edge line most normal copies do not jam but if you get a solid larger the a square inch it will jam. you cannot get a sky shot thru .

My email is Lbcoaster@aol.com

Having the same issue with a few 753's also...

Thanks
Steve

sky copy: just cover 5 cm of the glass with white paper

[blackcat4866]

Re: Sharp MX 623 Overtoned?

Try adjusting Gamma: 46-18? =^..^=

[buzz]

Re: Sharp MX 623 Overtoned?

De-toning the developer will help to a certain extent, but first I would check to make sure that you've got a 3mm to 3.5mm leading edge void and a 4mm trail edge void. That will make the biggest difference. As a manufacturer, Sharp makes it particularly difficult to do this adjustment. If you can follow the procedure in the manual ... well, kudos to you. On a quiet day I took a Tiger, and tried to follow the procedure in the manual to the letter. My conclusion? It can't be done that way. If you're at all interested, I figured out a particularly repetitive and illogical way to get the voids adjusted to where I wanted them on Cougar, Tiger, Jupiter, Dragon I. It just might work on Dragon III. Send a private message with email destination if you'd like that document.

Another indication of overtoning is when the waste toner compartment of the toner cartridge fills before toner runs out. If you're getting this, I would clean the face of the toner sensor, replace the developer, and run 25-2, 24-5.

As a simple test, you might enable Toner Save. In my experience though, endusers don't much care for crappy image quality.

If the source of your heavy fill originals is small-sized originals or copied originals made with the lid up, you have more options. Perhaps you can convince your enduser to use Edge Erase set to 10mm to 15mm, to remove some of that unnecessary black border.

=^..^=

Thanks for the post Lbc, please post results and resolve if any.

blackkcat, i got 2 623's in the same office with the same problem. i tried adjusting that lead edge void myself, but to no avail. I wouldn't mind giving that doc you have a try. i'll pm.

[foudl]

Re: Sharp MX 623 Overtoned?

Run into a couple of MX 623 and 753 where the toning is kind of hot(no background but rich) and when customer copies a large solid jams in fuser, new fusers with most current updates. Any suggestions on toning down? Have tried new developer, Calibrate 25-2 with door open before start...

Thanks
Steve

Could be a long shot , but do you calibrate dev with the toner bottle out ,it is very important to do so and it saves lot of trouble.

[Lbcoaster]

Re: Sharp MX 623 Overtoned?

Looks like I Got this to settle down with the toning and jamming,
Cleaned toning sensor in DV unit
Changed Developer made sure to press CA when sim 25-2 is complete this sets DV, before running sim 25-2 turn copier on with the door open and then enter sim close door and start.

This is the most likely problem sim 46 - 51 gamma was set to heavy paper laying on a lot of toner, no idea when or where someone had set this...

Ran 80 copies with 50% toner coverage, copier did not jam and quality stayed consistent, ran 300 copies 8% coverage looked good and consistent.

Hope that helps....
Steve

[ZOOTECH]

Re: Sharp MX 623 Overtoned?

Looks like I Got this to settle down with the toning and jamming,
Cleaned toning sensor in DV unit
Changed Developer made sure to press CA when sim 25-2 is complete this sets DV, before running sim 25-2 turn copier on with the door open and then enter sim close door and start.

This is the most likely problem sim 46 - 51 gamma was set to heavy paper laying on a lot of toner, no idea when or where someone had set this...

Ran 80 copies with 50% toner coverage, copier did not jam and quality stayed consistent, ran 300 copies 8% coverage looked good and consistent.

Hope that helps....
Steve

Thanks for the update.

[blackcat4866]

Re: Sharp MX 623 Overtoned?

Congratulations Steve. =^..^=

[Lbcoaster]

Re: Sharp MX 623 Overtoned?

Thank for the assist...