Kyocera 2500ci spreading bar ground not on plain paper but on any thick paper like card and I have replaced all developer units including drum units please any one with ideas and help

Check development unit. Broken gear or drive or motor.

try to make a copy from your PC,if it was working fine that means you have a problem with your scanner unit.

are you using plain paper or thick? sounds like the fuser isn't fusing correctly. could also be in drum or dv unit

The 7410 indicates a drum error (see below) the 0163053 is the number of prints made by the printer. The drum was most likely knocked loose when installing toner.

Drum unit non- installing error -
The drum unit is not installed or not installed properly.


Detaching and refitting the developer unit Procedure
1. Open the top cover.
2. Open the MP tray.
3. Remove the developer unit.
4. Check or replace the developer unit and refit all the removed parts.

Detaching and refitting the drum unit
1. Remove the developer unit.
2. Open the left side cover and then remove the waste toner box.
3. Unlock the drum unit lock and then remove the drum unit.
4. Check or replace the drum unit and refit all the removed parts.

I hope this is helpful,
Shawn

if you are getting blank copies nothing on the page you need to check the drum main charge or the developer unit is locked into place correctly and if the developer unit is turning take out the developer unit and see if there is an even coating of dev and toner on the roller use a piece of paper rub of a small are on the developer roller put in the machine and do a copy after take out the developer unit and see if where you marked is visable if it is then the developer unit has a problem as it is not turning
Check the main charge roller it is connected to the side door

Hello, The Kyocera FS-4000 have a separate Drum Unit and Developer unit installed.
The Developer delivers the toner to the drum unit, either could cause the issue you are describing. The Fuser in the back is also a possibility, however remote for this discussion. The most likely component failing is the developer unit. The developer is accessed by flipping the top cover and withdrawing the developer out. Look at the developer roller for a smudge or smear, you may be able to smooth out any smudges with a piece of paper, do NOT use your hands or any liquid of any kind. The drum unit slides out the left side of the printer VIA the access panel. The cost of these components can be quite a bit. If you have any spare I would install them one at a time and see if you can determine which is causing the problem.

302F993011 DK-310 (Drum Unit)

302F993030 DV-322U (Developer Unit)

302F993072 FK-320U (Fuser Unit)

1. Remove the paper cassette and the paper transfer unit. (Draw the paper transfer unit while pressing the buttons in)

2. Remove the developer unit.

CAUTIONS When if installing or removing the developer, do not let the magnet roller touch any part in the printer.

A. Open the top cover.

C. Remove the toner container.

D. Disconnect the developer connector.

E. Remove the developer from the printer while sliding the developer lock lever frontwards.

F. Gently flip down the magnet roller protective cover.

NOTE After removing the developer, seal it in the protective bag and place it on a flat surface. Do not place the developer in a dusty area.

3. Remove the waste toner bottle.

4. Remove the drum unit while pressing the drum lock.

I hope this is helpful,

Shawn

(1) Detaching and refitting the drum unit
Procedure
1. Remove the developer unit (See page P.1-5-
9).
2. Open the left side cover and then remove
the waste toner box.
3. Unlock the drum unit lock and then remove
the drum unit.
4. Check or replace the drum unit and refit all
the removed parts

(1) Detaching and refitting the transfer roller and separation charger brush unit
Procedure
1. Remove the developer unit (See page P.1-5-
9).
2. Remove the drum unit (See page P.1-5-10).
3. Slide the paper chute guide and unhook the
hooks.
4. Remove the paper chute guide.
5. Remove the shaft (transfer roller) from the
both bushes.
6. Release the four latches and then remove
the separation charger brush unit.
7. Check or replace the transfer roller and separation
charger brush unit and refit all the
removed parts.
CAUTION: Note the following, when refitting
the separation charger brush unit.
A. The separation charger brush unit is
inserted into the two projections of the frame
and does not run on to the projections.
B. The separation charger brush unit is
firmly in contact with the separation charger
plate of the frame.

(1) Detaching and refitting the paper feed assembly (paper feed roller and pickup roller)
Procedure
1. Remove the paper cassette.
2. While pushing the lock and then slide the
paper feed roller pin.
3. While pressing the lever and then remove
the paper feed roller assembly.
4. Check or replace the paper feed assembly
and refit all the removed parts.

(2) Detaching and refitting the ****** roller
Procedure
1. Remove the paper cassette.
2. Push the bottom plate down until it locks
(30/31 ppm printer [EUR/USA model] only).
3. Unlatch the two latches and then remove
the ****** guide.
4. Remove the ****** holder (roller) from the
****** guide.
5. Check or replace the ****** roller and refit all
the removed parts.

1-6-4 Image formation section (1) Detaching and refitting the image formation unit Follow the procedure below to replace or check the image formation unit. Prucedure 1. Pull the drawer out and open the front cover, bypass tray and paper conveying unit. 2. Remove the waste toner tank and toner container. 3. Remove the two screws holding the waste toner tank cover and then the cover. 4. Remove the screw holding the developing retainer and then the retainer.
5. Remove the two screws and datach the connector and remove the image formation unit.
(3) Detaching and refitting the drum Follow the procedure below to replace the drum. Cautions: • Avoid direct sunlight or strong light when detaching and fitting the drum. • When removing the drum, spread paper underneath as there is a possibility of toner spill. Toner spill can be reduced by inserting an approximately 20-mm thick pad under the image formation unit toward the developing section and removing the drum with the unit slightly tilted. • Hold the drum at the ends and never touch the drum surface. • After removing the drum, keep it in the drum case or storage bag to protect the surface from light. Prucedure 1. Remove the image formation unit (see page 1-6-27). 2. Remove the main charger unit (see page 1-6- 28). 3. Remove the four screw and blade spring, and then open the cleaning unit. • Slide the cleaning blade back and forth and insert an approximately 4 to 4.5-mm thick spacer between the retainer at the rear of the cleaning unit and the housing.
4. Remove the screw holding the drum grounding plate and then the plate. 5. Remove the E ring from the drum shaft.
6. Remove the screw holding the upper developing seal and then the seal. Figure 7. Pull the drum shaft out and remove the drum. • Detach the drum horizontally. 8. Replace the drum and refit all the removed parts. • When replacing the drum, insert a sheet of paper between the drum and developing roller to prevent damage to the drum. • Check the letter indicating the drum type printed on the new drum flange. • Securely insert the drum shaft as far as it will go. When turning the drum shaft, turn it in the direction indicated by the arrow marked on the image formation unit frame. • Rotate the drum in its rotational direction and check that the cleaning blade does not flip up. 9. After replacing the drum, run maintenance items below. • U109 “Setting the drum type “ (set to the drum type printed on the new drum flange) • U110 “Checking/clearing the drum count”(clear the drum count) • U111 “Checking/clearing the drum drive time” (clear the value)

Menu> scroll to Paperhandling> MP Tray type>>(plain) try changing this to cardstock  <enter>
instead of MP Tray type do the same for Cassette if you desire....
Best, danakadan