Ricoh Aficio CL7300 DT2 Laser Printer Cyan color issues

If your Ricoh Aficio MP C2800 is showing "toner undetectable" messages for all four toner cartridges and the yellow and cyan colors are not showing up in copies, there may be several potential causes for this issue. Here are some troubleshooting steps to help you resolve the problem:

1. Check Toner Cartridges: Ensure that all four toner cartridges are correctly installed and securely seated in their respective slots. Make sure there are no protective seals or tapes left on the cartridges.
2. Shake Toner Cartridges: Sometimes, toner inside the cartridges can settle or clump, leading to detection issues. Gently shake each toner cartridge side to side to redistribute the toner evenly.
3. Replace Toner Cartridges: If the toner cartridges are old, empty, or expired, replace them with new, genuine Ricoh toner cartridges.
4. Clean Contacts: Dust or debris on the toner cartridge contacts can interfere with communication. Use a soft, lint-free cloth to clean the electrical contacts on both the toner cartridges and inside the printer.
5. Check Developer Unit: The developer unit in the printer plays a crucial role in toner development and transfer. Ensure that the developer unit is clean and free from any obstructions.
6. Perform a Firmware Update: Check if there are any firmware updates available for your Ricoh MP C2800 printer. Updating the firmware might address known issues and improve printer performance.
7. Reset the Printer: Power off the printer, unplug it from the power source, wait for a few minutes, and then plug it back in. Power the printer on to see if the issue resolves.
8. Check Toner Detection Sensors: The printer uses sensors to detect the presence of toner cartridges. Verify that these sensors are functioning correctly and not blocked by any debris.
9. Perform a Factory Reset: As a last resort, you can try performing a factory reset on the printer. However, be aware that this will reset all settings to their defaults, and any custom configurations will be lost

try cleaning the laser shield glass for cyan. you said you change photo and drum. Does that mean developer unit for cyan and cyan drum unit.

most likely bad black toner pump. you will need to call a tech is at least a two hour job and you have to take a lot of things out to replace it.

I believe what you are referring to is the drum inside the toner cartridge. The drums are usually very strong colors, blue or green and if it is streaking then the drum cleaning blade has failed on the inside and you need to replace the cartridge.

If I remember right, the CL1000 won't print if any of the 4 colors are out. You have to replace the cyan toner in order to print, even in black and white.

If you haven't tried already, you can try taking the cyan toner out and shaking it up (just a little bit) to try to get the printer to find the little bit of toner left in the bottle.

Look at the transfer unit. If the clear belt has alot of wear lines the belt needs to be replaced pn# B180 3780

The machine builds the alignment image on this belt and then reads it if the belt is cloudy it will fail.

sc 541=Heating roller thermistor error (Fusing unit).
The thermistors could be dirty or damaged.
The fusing unit can be removed and inspected(without removing any screws)(Left door)(lower handle).
If you see any damage you might have to replace the unit(or only the part if u r lucky).

This error is power related... their are two possibilities either... your fuser is blown or your machine needs a reset... here is a link to try the reset...

http://www.fortc.com/2007/06/17/ricoh-cl4000dn-error-code-sc542/

the reset should be all you need...

reset link


I’m happy to assist further over the phone at https://www.6ya.com/expert/norman_d2fa496dce30c65d

cyan problem --check if cyan pcu is set properly or replace cuan pcu(drum)

possible toner pump