Konica Minolta 8050 41-03

[Rolandito]

hello guys, I have a problem with a KM 8050 machine , a 41-03 code appears.
I dont Know how to fix it, in past I have troubles on magenta color. a magenta band only cross over the sheet, all another colors working

[selig67]

is it F41-03?

When the polygon motor (M4)
is started or the speed is
switched, M4 lock signal is not
detected within the specified

time.

cause is listed as either the polygon motor or the printer control board