Drum unit removal - Konica Minolta bizhub C250 All-In-One Laser Printer

1. Open the front cover
2. Remove waste toner box
3. Remove developer unit
4. Put down the power switch actuator
5. Remove screws (2 special screws can only be loosen) and pull out the process unit
6. Separate the transfer belt from the process unit
7. Remove the main charger unit and u can change the drum

This error 7410 is a Drum unit non- installing error. The drum unit is not installed or not installed properly.The drum PWB EEPROM does not communicate normal. Detaching and refitting the drum unit;

Procedure
Remove 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.
5. Open the left side cover and then remove the waste toner box.
6. Unlock the drum unit lock and then remove the drum unit.
7. Check or replace the drum unit and refit all the removed parts.
Good Luck

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

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

Reset DCP 7030 drum unit : -LCD-
Press MENU and turn on printer - MAINTENANCE
arrows 81 and OK -RESET DRUM COUNT
press OK -RESET LIFE COUNT
press CLEAR / BACK
arrows 99 and OK
ready

disingage dv unit lower transport assembly remove blue screw from drum unit take drum unit out remove drum lock towards the front remove charge assemby remove drum reinstall drum remember to apply drum powder and replacement of drum blade is recommended reinstall

To change the drum you have to slide the plattened cover to the left,like you do when removing a paper jam,open the top cover,you will see a handle that you pull to remove the defeloping and drum unit,remove the drum and def unit.
The drum is attached by two clips on top of def unit,unlock the drum from the def by releasing that clips,slide te drum protecktion plate to the rear and remove the drum.insert the new drum by reversing this steps.
If your image of your copies is not bad you can remove the waste toner in the drum unit before replacing it.On top of the drum there are two plugs open them and remove the waste toner,make sure you remove all of the waste toner.Then that message will go away.

It is easy, open the front door and fold down the transport unit & the drum is to the left of the developer aunit. There is one screw that hold the drum in, unscrew it and before you pull the drum unit out remove the grey filter unit to the left of the drum, then remove the drum unit. Note there is a corona wire as the primary charge, it is not a roller. There is a screw that holds the unit in on the rear of the drum unit and also, there is one silver secew that is attached to the cleaning unit for the post corona wire. Some C.Q. problem can be fixed with replacing the post corona wire. Good Luck

First, what kind of technical background do you have? Also when replacing the drum you should replace the drum blade. Most of the drum/blade kits do not come with padding powder anymore so you will need the padding powder also -- if you do not use the padding powder you will get drum blade jitter and trash the brand new drum!!!!

TO replace the drum you will need to remove the toner cart., 1-2 covers, the dev. unit (developer) and then the drum unit. You will then have to take the drum unit apart to remove the old drum and blade. *****NOTE***** DO NOT TOUCH THE DRUM SURFACE OR THE MYLAR (RUBBER PART) OF THE BLADE WITH YOUR SKIN!!!!!! The oil from your skin will damage the drum and could damage the blade, again -- then they would be trashed.

I would spend the money to have a trainer tech. come out and replace/ rebuild your photo conductive unit for you. It would be money well spent.

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)