Cyan 20% Ess; Magenta 20% Ess - Epson AcuLaser C2900N Service Manual

Chapter 2 Operation of Diagnostic

4.5.5 Cyan 20% ESS

Outputs the cyan 20% density solid pattern on the whole area of an A4 sheet.
When a PQ problem occurs, this test isolates the problem to the cyan toner or other color toners by
comparing the print with the sample chart.
Check result: NG (Check the cyan toner.) OK (Check other color toners.)

4.5.6 Magenta 20% ESS

Outputs the magenta 20% density solid pattern on the whole area of an A4 sheet.
When a PQ problem occurs, this test isolates the problem to the magenta toner or other color toners by
comparing the print with the sample chart.
Check result: NG (Check the magenta toner.) OK (Check other color toners.)
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