Lexmark CS720 User Manual

Action Yes No
Step 6
Check the cable for damage, and replace if necessary.
Does the problem remain?
Go to step 7. The problem is
solved.
Step 7
Replace the control panel cable.
Does the problem remain?
Go to step 8. The problem is
solved.
Step 8
Replace the control panel. See
“Upper control panel removal” on
page 280.
Does the problem remain?
Go to step 12. The problem is
solved.
Step 9
Disconnect the LVPS cable from the controller board, and then
measure the voltages of the red and orange wires.
Is the reading on the red wire +6.5 V, and the orange wire +25 V?
Go to step 12. Go to step 10.
Step 10
Replace the LVPS cable.
Does the problem remain?
Go to step 11. The problem is
solved.
Step 11
Replace the LVPS. See
“LVPS removal” on page 305.
Does the problem remain?
Go to step 12. The problem is
solved.
Step 12
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.
Interlock switch service check
Action Yes No
Step 1
a Enter the Diagnostics menu, and then navigate to:
Printer diagnostics & adjustments > Sensor tests
b Find the sensor (Door interlock).
Does the sensor status change while toggling the sensor?
The problem is
solved.
Go to step 2.
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Diagnostic information
224

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