Lexmark X642E, Service Manual, Page: 49 / 525

Diagnostic information
2-11
7002-xxx
Printer—vertical black bands on edge of
copy (print quality) Go to “Print quality—black bands on outer edges of the
page” on page 2-163 .
Unable to clear a 32-Unsupported Print
Cartridge user error message. Go to “Signature button assembly service check” on
page 2-170 .
Scanner—ADF symptoms
Symptom Action
ADF does not recognize paper length in the
paper tray Go to “ADF paper length sensor service check—models
X644e/X646e” on page 2-122 .
ADF does not recognize one or all paper
widths of paper in the paper tray Go to “ADF paper width sensor service check—models
X644e/X646e” on page 2-123 .
Scanner—flatbed symptoms
Symptom Action
Flatbed scanner does not recognize paper
size. Go to “Flatbed size sensor service check” on page 2-131 .
A blue screen on the touchscreen. The
MFP does not come to a Ready state. Go to “843.xx Error code service check” on page 2-116
A clicking noise coming from the back of
the MFP between the scanner and the
printing unit. Go to “843.xx Error code service check” on page 2-116
Scanner—scan quality
Symptom Action
Vertical streaks or lines on image Go to “Vertical streaks or lines on image” on page 2-165
All black or blank page Go to “All black or blank image” on page 2-168
Wavy lines—flatbed or mixed mode up to
300 dpi Go to “Wavy lines” on page 2-169
Line compression Go to “Line compression” on page 2-169
High-capacity feeder (2000-sheet) symptoms
Symptom Action
The printer does not recognize the high-
capacity feeder installed. Go to “High-capacity feeder input tray service check” on
page 2-141 .
Paper feed problem with the high-capacity
feeder. Go to “High-capacity feeder input tray service check” on
page 2-141 .
Printer symptoms (continued)
Symptom Action