Konica Minolta bizhub C650 Service Manual page 747

18. Image quality problem
C. Initial check items 3
• If the printer is responsible for the image problem, let the machine produce a test print
and determine whether the image problem occurs in a specific single color or four colors
Mono color
• Evaluation procedure
Image
problem
From [Service Mode], select [Test Mode] →
[Halftone Pattern] → [SINGLE] → [HYPER]
→ [Gradation] → [C→M→Y→K] → [Density
Lines, bands
64], and produce a test print. Is image prob-
lem evident in each of all four colors?
692
Action
Field Service Ver. 8.0 Jun. 2008
Result Cause
Printer,
YES P.722
4 colors
Printer,
NO P.708
single color
4 colors
A00JF4C510DA
Next step