Lexmark CS720 User Manual

Action Yes No
Step 1
a Enter the Diagnostics menu, and then navigate to:
Advanced Print Quality Samples > Advanced Print Quality
Samples
b Check the test page.
Did the print defect appear on all the pages?
Go to step 5. Go to step 2.
Step 2
• If the aected color is cyan, magenta, or yellow, then replace
the developer unit of the aected color.
• If the aected color is black, then replace the imaging unit.
Does the problem remain?
Go to step 3. The problem is
solved.
Step 3
Check if the aected color is black.
Is the aected color black?
Contact the next
level of support.
Go to step 4.
Step 4
Replace the photoconductor unit.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
Step 5
Check the transfer module for proper installation and damage, and
replace if necessary. See “Transfer module removal” on
page 334.
Does the problem remain?
Go to step 6. The problem is
solved.
Step 6
Clean the printhead. See
“Cleaning the printhead lenses” on
page 410.
Are the lenses contaminated?
Go to step 7. Go to step 8.
Step 7
Clean the lenses, and then reinstall the printhead.
Does the problem remain?
Go to step 8. The problem is
solved.
Step 8
Replace the printhead. See
“Printhead removal” on page 361.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
5028
Diagnostic information
45

Lexmark CS720 Specifications

General

Type	Original
Compatibility	- CS720
Product color	Black
Printing colors	Yellow
Country of origin	China
Quantity per pack	1 pc(s)
Brand compatibility	Lexmark
Color toner page yield	7000 pages
Cartridge return & recycling	Yes
Print technology	Laser printing
Harmonized System (HS) code	84439990

Weight and Dimensions

Package depth	160 mm
Package width	190 mm
Package height	75 mm
Package weight	380 g