Lexmark C520 Series, Service Manual

Page: 63 / 259

Diagnostic information
2-5
5022- xxx
Symptom tables
Printer symptom table
Print quality symptom table
Symptom Action
Dead printer Go to “Dead printer service check” on page 2-64 .
Operator panel—one or more buttons do
not work. Go to “One or more operator panel buttons fail” on
page 2-65 .
Operator panel—display is blank. Printer
sounds five beeps. Go to “Operator panel display” on page 2-66 .
Operator panel—display is blank. Go to “Operator panel display” on page 2-66 .
Operator panel continuously displays all
diamonds and does not complete POST. Go to “Operator panel display” on page 2-66 .
Symptom Action
Background Go to “Print quality—background” on page 2-68 .
Blank page Go to “Print quality—blank page” on page 2-69 .
Blurred or fuzzy print Go to “Print quality—blurred or fuzzy print” on page 2-70 .
Half-color page Go to “Print quality—half-color page” on page 2-70 .
Horizontal banding Go to “Print quality—horizontal banding” on page 2-70 .
Horizontal line Go to “Print quality—horizontal line” on page 2-71 .
Insufficient fusing Go to “Print quality—insufficient fusing” on page 2-71 .
Missing image at edge Go to “Print quality—missing image at edge” on page 2-71 .
Mottle (2–5mm speckles) Go to “Print quality—mottle (2 - 5mm speckles)” on
page 2-71 .
Narrow vertical line Go to “Print quality—narrow vertical line” on page 2-71 .
Random marks Go to “Print quality—random marks” on page 2-71 .
Residual image Go to “Print quality—residual image” on page 2-72 .
Solid color page Go to “Print quality—solid color page” on page 2-72 .
Vertical banding Go to “Print quality—vertical banding” on page 2-73 .