Random Marks Check; Light Print Check - Lexmark CS720 Service Manual

Random marks check

Action
Step 1
Check the printer for toner leaks.
Are there toner leaks?
Step 2
a
Clean the printer thoroughly using a toner vacuum.
b
Perform a print job to clear the remaining toner from the
imaging components.
Does the problem remain?
Step 3
Check the imaging kit for debris and fragments.
Is the imaging kit free of debris and fragments?
Step 4
Remove the debris and fragments.
Does the problem remain?
Step 5
Check the transfer module for debris and fragments.
Is the transfer module free of debris and fragments?
Step 6
Remove the debris and fragments.
Does the problem remain?

Light print check

Action
Step 1
a
From the home screen, touch Settings > Print > Quality.
b
Check the Toner darkness setting value.
Is the darkness setting too low?
Step 2
Adjust the darkness setting to the proper value.
Does the problem remain?
Diagnostic information
57
Yes No
Go to step 2. Go to step 3.
Go to step 3. The problem is
solved.
Go to step 5. Go to step 4.
Go to step 5. The problem is
solved.
Contact the next Go to step 6.
level of support.
Contact the next The problem is
level of support. solved.
Yes No
Go to step 2. Go to step 3.
Go to step 3. The problem is
solved.
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