Lexmark CS725R Service 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 CS725R Specifications

General

Brand	Lexmark
Model	CS725R
Category	Printer
Language	English