Konica Minolta BIZHUB 501 Service Manual page 336

Field Service Ver.2.0 Mar. 2009 10. SERVICE MODE
No.2 Gradation pattern
[Check item]
When fogging appears or density is thin, check the process system and the gamma correction to see if which
is defective.
Regardless of this test pattern being normal, any trouble is found with the print image, the image processing
system or scanner system is considered defective.
Test patterns
50gaf3c013na
299