[CQ] clc 5100 with background from rip

[collatorguy]

Test prints and copies from the glass show that slight background throughout the page including the void areas. Prints from rip show a heavier background in the printed area than the void area.

Have tried a different cable between the rip and copier. Cleaned and reseated what I can.

Any other ideas would be appreciated.

Thanks

[collatorguy]

A clarification. Test prints generated by the copier and copies fron glass show the same backgroud throughout the page. Prints and test images generated by the rip have the heavier background

[teckat]

A clarification. Test prints generated by the copier and copies fron glass show the same backgroud throughout the page. Prints and test images generated by the rip have the heavier background

Can be caused by a bad drum ground.
the grounding tab on the inside of the drum may not be making a good contact with the drum shaft.
With a spring hook, it may be reformed to make a better contact with the drum shaft. If this cannot be done then replace the drums.

U need a FULL developer change !!!!!!
how old are drums ??

I change Developer/Drums & Blades at the same time-
do not forget to calibrate the clc5100 Printer & the fiery with the kodak grey scale

[collatorguy]

thanks for your response.

Drums, blades, corona wires, have all been replaced by me recently. Developer has been changed since porblem started.
Customer has replaced xfer belt and blades. Will have to check notes, but i believe problem developed before installation.
Gradation and greyscale are done regularly and have not helped.

Will check into grounding.

BTW - gradation prints show the extra background, but only along the vertical plane where the colored bars are printed.

Thanks again

[teckat]

thanks for your response.

Drums, blades, corona wires, have all been replaced by me recently. Developer has been changed since porblem started.
Customer has replaced xfer belt and blades. Will have to check notes, but i believe problem developed before installation.
Gradation and greyscale are done regularly and have not helped.

Will check into grounding.

BTW - gradation prints show the extra background, but only along the vertical plane where the colored bars are printed.

Thanks again

CHECK all your single color PG 5 PRINTS.- For non-image area background/
if all exhibit issue , could be grounding issue

Check to make sure that 'PASCAL' in 'ADJUST>PASCAL' in
service mode is '1'.

make sure the side plates on Primary corona /ones u remove to rewire post wire are cleaned off> use green pad with some water

how old are the grid plates ???

did u check your pre-cond lamps ?

[charm5496]

CHECK all your single color PG 5 PRINTS.- For non-image area background/
if all exhibit issue , could be grounding issue

Check to make sure that 'PASCAL' in 'ADJUST>PASCAL' in
service mode is '1'.

make sure the side plates on Primary corona /ones u remove to rewire post wire are cleaned off> use green pad with some water

how old are the grid plates ???

did u check your pre-cond lamps ?

If all the above have been checked and are in good shape it could be the image processor mother board. This can cause the backgrounding in one or more colors at the same time. If you can trace it down to one color it will be easier to troubleshoot.
I also remember a sensor that would get caked with toner on each of the drum housings. I would blow them out along with cleaning the pre conditioning lamps and salt sensors.

It is also possible that since the starter was not replaced with the drums the machine got a bad density read and is trying to achieve a value that it cannot reach causing your background issue.

[teckat]

to add on>>

when I used to have an overtone issue/background problem after replacing developer
on this CLC5100.
I would input all the numbers from the door specs that pertain to developer/
DENS-C/M/Y=Normal if between -20 and + 20.
SGNL-C/M/Y=Normal if between 700 and 912.
REF-C/M/Y=Normal if between 377 and 848.
DENS-S-C/M/Y/K=Normal if between -40 and +40.
SGNL-S-C/M/Y/K=For C, M, and Y, normal if between 640 and 850 (CMY).
For K=normal if between 192 and 389.
REF-S-C/M/Y/K=For all colors, normal if between 464 and 544.
SGNL-D-C/M/Y/K=For C, M, and Y, normal if between 380 and 900.
For K=normal if between 300 and 720.
Check SALT WINDOW=Normal if between 60 and 140.

Also check these readings for DRUM
EPOT (photosensitive drum surface potential control data)
VOO-C/M/Y/K=Optimum value: 350 to 800V
VFF-C/M/Y/K=Optimum value: 50 to 300V
The measurements of VOO and VFF may be checked by "EPC" under "FUNC".
VDC-C/M/Y/K=Optimum value: 200 to 650V
VG-C/M/Y/K=Optimum value: 300 to 800V

Then>>>>>>>>>>>>>>>>
power off/on> PRINTER
Execute 'STIR-4'.
Execute 'INIT-7'. (about 2 min)
Execute 'WINCLR4'.
power of/on
Then re-Calibrate >Printer & Fiery

[charm5496]

wasn't there a DPC offset and a DPC funtion to run on the drums as well?