Lexmark CS720 User Manual

Action Yes No
Step 6
Replace the input option controller board. See
“550-sheet tray
controller board assembly removal” on page 382.
Does the problem remain?
Go to step 7. The problem is
solved.
Step 7
Reset the printer.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
Printhead service check
Action Yes No
Step 1
Reset the printer.
Does the problem remain?
Go to step 2. The problem is
solved.
Step 2
Check the cables on the printhead and on the JMIRR1 and JPH1
connectors on the controller board for proper connection.
Are the cables properly connected at both ends?
Go to step 4. Go to step 3.
Step 3
Reconnect the cables.
Does the problem remain?
Go to step 4. The problem is
solved.
Step 4
Check the printhead cable for damage, and replace if necessary.
Does the problem remain?
Go to step 5. The problem is
solved.
Step 5
Replace the printhead. See
“Printhead removal” on page 361.
Does the problem remain?
Go to step 6. The problem is
solved.
Step 6
Replace the controller board. See
“Controller board removal” on
page 357.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
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Diagnostic information
182

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