Lexmark CS720 User Manual

Action Yes No
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.
Motor (K developer) service check
Action Yes No
Step 1
Reset the printer.
Does the problem remain?
Go to step 2. The problem is
solved.
Step 2
a Remove the imaging kit, and then remove the transfer module.
See
“Transfer module removal” on page 334.
b Enter the Diagnostics menu, and then navigate to:
Printer diagnostics & adjustments > Motor tests > K developer
c Tou ch Start.
Does the motor run?
Go to step 3. Go to step 6.
Step 3
Manually turn the drive gears.
Do the black developer and transfer module drive gears freely
turn?
Go to step 5. Go to step 4.
Step 4
Replace the motor (EP drive). See
“Motor (EP drive) removal” on
page 296.
Does the problem remain?
Go to step 5. The problem is
solved.
Step 5
Check the imaging kit components and transfer module for
damage or life expiration, and replace if necessary.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
Step 6
Check the cable on the motor and on the JCARTK connector on
the controller board for proper connection.
Is the cable properly connected at both ends?
Go to step 8. Go to step 7.
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Diagnostic information
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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