After replacing the magenta and cyan drum units the machine power off and shuts down while idle

https://printcopy.info/?l=en&mod=erc&brand=Ricoh&model=Aficio%20MPC3002&code=361-02

Quoting from link above:

Ricoh Aficio MPC3002 Error Code

Code

361-02

Description

TD sensor (Vt high) error 1: C
• The Vt value of the black, magenta, cyan, or yellow TD sensor exceeds the specified value (default: 4.7V) with SP3-020-002 for twenty counts. • The [Vt - Vtref] value of the black, magenta, cyan, or yellow TD sensor exceeds the specified value (default: 5.0V) with SP3-020-001

Causes

• Black, magenta, cyan, or yellow TD sensor disconnected • Harness between TD sensor and PCDU defective • Defective TD sensor

Remedy

1. Check the black, magenta, cyan, or yellow TD sensor connector and harness between the TD sensor and PCDU for damage. 2. Check the drawer connector. 3. Replace the defective PCDU.

Did you replace the image unit for cyan and magenta, you don't replace the developer you replace the whole unit which includes the drum! Did yo use third party ? BAD!!!!! Replace the cyan and magenta image units with OEM cartridges

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

Replace the black drum and developer unit along with the magenta (P-7) and yellow (P-8) image units and Transfer belt (P-21)

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

Magenta Print head (print head has the LASER inside of it that writes the image on the drum) in this case it is the magenta LASER. Open and close the front door to reset. If it comes back replace the print head. Normal done as a set of all four. (Black, Magenta, Yellow, and Cyan). Worse case is the relay board is bad or the Image control Board$$$$$$$$$$$$$$$$.


Try this site as a start:


Precision Roller Printer Toner Cartridges Parts and Supplies Office...

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

This error code means that the yellow drum/developer unit has failed. Your machine has 4 drums, cyan,magenta,yellow and black. At best they are good for about 40,000 copies. You can order one online and it is fairly simple to replace. Let me know if I can help further.

This could be a DC controller issue or and issue with the black drum unit. If you have replaced the Black Drum, and it still produces the same error after doing a print, then you will need to replace the DC controller PCB and possibly look at the power supply.

If the stripe is only Magenta in color then I would highly suspect the Magenta Drum Unit to be the cause. All 4 color drums in these machines are interchangable so you COULD take the Magenta drum out and swap it with the Cyan or other color to see if the color of the stripe changes from Magenta to Cyan. These drums are pretty cheap at around $50.00 so if it were me I would just order one and replace it. If you want to try the swap then just open the front door and look for the grey color plastic bar that runs from upper left down to the lower right. Flip the green handle over that is close to the upper left end. Then loosen the 2 screws at either end of the grey bar. Lift up the bar and then you will see the Drum and Developer Units. The Drum units have the little green tab on the upper right side of the unit. The Developer Units have the green loop "handle" on them. Locate and remove the Magenta drum (just look for the magenta colored Developer Unit and the Magenta Drum is just above it) and whatever color drum you want to swap it with and switch the 2 around. Close the grey bar and secure the 2 screws, close the green handle and the front door and test.
The testing is not really necessary tho as the problem I am sure is the drum unit.
Good Luck and Thank You for using Fixya.
WheatlandServices

CAUSE: LD Power becomes saturated when performing Auto Gamma adjustment in a low humidity condition.

SOLUTION: Perform the following adjustment:
1. [Utility].
2. [Machine Admin. Setting].
3. [System Setting].
4. [Expert Adjustment].
5. [Process Adjustment].
6. [Toner Quantity / Exposure].
7. Select the proper Exposure Adjustment [Yellow, Magenta, Cyan, or Black] by using the Next/Previous button.
8. Select Standard then select [-2] under Exposure.
9. Press OK.
Notes:
a. If the problem persists, replace the problem color drum since the cause of the SC is the combination of drum characteristic and humidity.
b. The following codes = colors: C-2831 = Yellow; C-2832 = Magenta; C-2833 = Cyan; C-2834 = Black.

E020 is a Drum/developer error code

-01b0 is a yellow drum error

-0260 is a magenta drum error

drums need replaced

7622A001AA Yellow drum part#

7623A001AA Magenta drum part#

7624A001AA Cyan drum part#

7623A001AA Black drum part#

please clean the mirrors and drum unit