Lexmark X95 series, Service Manual

Page: 327 / 1182

Diagnostic information
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Image quality troubleshooting
Printer-related troubleshooting
First, get a printout as a base, and then follow the symptom table to identify the possible failing FRUs.
Image quality symptoms
• Faint print (low contrast)—
“Faint print (Low contrast)” on page 2-276
.
• Blank print (no print)—
“Blank print (no print)” on page 2-278
.
• Solid black—
“Solid black” on page 2-280
.
• Vertical lines and bands (process direction)—
“Vertical lines and bands (process direction)” on
page 2-281
.
•
Horizontal white stripes or bands (side-to-side direction)—
“Horizontal white stripes or bands (side-to-
side direction)” on page 2-282
• Vertical stripes (process direction)—
“Vertical stripes (process direction)” on page 2-284
.
• Horizontal stripes (side-to-side)—
“Horizontal stripes (side to side direction)” on page 2-285
.
• Partial lack—
“Partial lack” on page 2-287
.
• Spots—
“Spots” on page 2-288
.
• After image (ghosting)—
“After image (ghosting)” on page 2-290
.
• Background fog—
“Background fog” on page 2-291
.
• Paper skew—
“Paper skew” on page 2-293
.
• Media damage—
“Media damage” on page 2-294
.
• No fuse—
“No fuse” on page 2-296
.
• Color misregistration—
“Color misregistration” on page 2-297
.
• Deletions—
“Deletions” on page 2-298
.
• High frequency bands—
“High frequency bands” on page 2-299
.
When horizontal lines and/or spots occur periodically, it is possibly caused by a particular roll. In this case,
measure the interval on the print test, and check the relation to the roll in the printer. The interval does not
necessarily match the circumference of the roll.