MP W2401 PS CODE SC-406

**Polo-022** · 03-30-2019

I have this code, with the following symptoms : 1. Machine reboots, after that it shows the SC-406 code 2. Partial printed drawings all over the printed paper, unreadable. So far i have replaced T/DT corotron assembly, T/DT Power Supply and Drum-for other reason this. Machine works for some days without a problem and then it codes again. On/Off and continues..
Thanks a lot for any input..

**Brianneoe** · 03-31-2019

From the 3606 manual, did not see it on my 2401 manual but its probably the same solution..

406 D ID Sensor Pattern Edge Detection Error
The ID sensor pattern check could not detect the correct voltage on the ID
sensor pattern (below 2.5V) within 0.6 sec.
�� ID sensor dirty
�� ID sensor harness loose, damaged, defective
�� ID sensor connector defective
�� ID sensor defective
�� MCU defective
�� CGB power pack defective

Did you replace the drum first and then had this problem? If the allen screws are loose the drum drive could be slipping causing this problem.

Good luck

**keithxxiii** · 03-31-2019

What's the value of your PWM? If it is higher that the specified value, check your ID sensor. Also, follow what brian has posted

**Polo-022** · 03-31-2019

Originally Posted by Brianneoe

From the 3606 manual, did not see it on my 2401 manual but its probably the same solution..

406 D ID Sensor Pattern Edge Detection Error
The ID sensor pattern check could not detect the correct voltage on the ID
sensor pattern (below 2.5V) within 0.6 sec.
�� ID sensor dirty
�� ID sensor harness loose, damaged, defective
�� ID sensor connector defective
�� ID sensor defective
�� MCU defective
�� CGB power pack defective

Did you replace the drum first and then had this problem? If the allen screws are loose the drum drive could be slipping causing this problem.

Good luck

Well, i read it at Goose Guide that slipping setscrews can cause this problem and yes, problem is more often after drum replacement. I'll be back on Tuesday for the feedback.

**Polo-022** · 03-31-2019

Originally Posted by keithxxiii

What's the value of your PWM? If it is higher that the specified value, check your ID sensor. Also, follow what brian has posted

I don't know why the sevice manual insists about ID sensor, i will try to post a sample..

**Polo-022** · 04-03-2019

I would like to inform you that there are no slipping setscrews
because this drum shaft is D shaped, so it cannot slip...No way!!
RW-240 has that kind of problem as i recall, the shaft is circular!
Certainly, i would not expect a slipping shaft can cause reboots!!!

**JDYAL** · 04-03-2019

What drum did you use? Aftermarket drums cause these codes on this model. Did you use a blue or green drum?

**Polo-022** · 04-04-2019

Originally Posted by JDYAL

What drum did you use? Aftermarket drums cause these codes on this model. Did you use a blue or green drum?

Drum is original.
But, i never had any problems with aftermaket drums, blue or green, never.

**JDYAL** · 04-04-2019

Are there any other codes in the sc history? Are your timing belts worn? Sometimes the belts start deteriorating prematurely and cause issues. Can you send and example of what the partial prints look like.