Light black copies taskalfa 3050ci

[vedder]

Hi everyone, got a bit of a head scratcher and any help would be very much appreciated.

We have a Utax cdc1930, which is a taskalfa 3050ci which is giving washed out black copies, only poor black, all other colours perfect, we changed the K dev unit, did all the dev set ups etc and the machine was fine, but after a day or so, the black was faint again, running a dev refresh and calibration brings it back up but it doesn`t last.

What we noticed was the black toner sensor control on auto is alot lower than the other readings at 138, the colours are up at around 160, if we put it on manual toner sensor control, the black stays black, but the colours overtone, but then if we take back off manual and on to auto, it goes back to under toning.

Just putting this out there to see if anyone has any suggestions as it is causing a few headaches, the firmware is all up to date, and all set ups have been done.

Any help or suggestions on this would be very much appreciated.

cheers.

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[EricToner]

Hi everyone, got a bit of a head scratcher and any help would be very much appreciated.

We have a Utax cdc1930, which is a taskalfa 3050ci which is giving washed out black copies, only poor black, all other colours perfect, we changed the K dev unit, did all the dev set ups etc and the machine was fine, but after a day or so, the black was faint again, running a dev refresh and calibration brings it back up but it doesn`t last.

What we noticed was the black toner sensor control on auto is alot lower than the other readings at 138, the colours are up at around 160, if we put it on manual toner sensor control, the black stays black, but the colours overtone, but then if we take back off manual and on to auto, it goes back to under toning.

Just putting this out there to see if anyone has any suggestions as it is causing a few headaches, the firmware is all up to date, and all set ups have been done.

Any help or suggestions on this would be very much appreciated.

cheers.

Hmmmm.... Are you using OEM or compatible toner?

[Venom]

if dev refresh only lasts a day and you have a new dev unit installed, then I would try new drum unit

[mossup]

if dev refresh only lasts a day and you have a new dev unit installed, then I would try new drum unit

I am having a similar problem on a TA7550ci , We have changed out the following Dev unit,Drum Unit ,LSU unit Drum Drive motor ,Dev drive motor,Transfer unit , Version 7 FW . The customer have been refreshing dev themself when it goes faint which is about once a day. Have a feeling its losing dev and then going faint, going to try HVT pwb and replace the drum and dev at the same time .

[copymech]

The hvt contacts for the transfer belt can come loose causing intermittent contact for that color. Usually causing faint t ransfere.

[NeoMatrix]

Sounds like the customer may have their MFD or printer driver software set to "eco" or " save toner mode" This will print blacks in lighter grey scales. Advise the customer to change this setting.

[24dude]

definitely check the eco settings they can be adjusted for copy and print in system menu..

[Haddat]

What is the result?

[mossup]

Not sure about the others,but we had to change the machine to keep the customer happy, after numerous visits with Kyocera we still couldnt find a solution.