Second Transfer Roll Service Check - Lexmark C77x Service Manual

C77/c78 series
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Quality troubleshooting (continued)
Symptom
Blank pages
Solid color pages
The paper curls badly
once it prints and exits to
a bin.

Second transfer roll service check

Note: The second transfer roll is 51.03 mm (2.009 inches) in circumference. Any print quality problems such as
lines that are spaced apart indicate you should check the second transfer roll for damage, toner, or foreign
material.
Note: The second transfer roll is also part of the maintenance kit and should be replaced when 83 ITU
Maintenance appears. Ask the customer if they have replaced the second transfer roll recently.
Note: If any of the following problems occur, go to
A problem with only one color
Light or very light print
CAUTION
Make sure the printer is powered off before making any checks on the second transfer roll or
associated parts for personal safety and to prevent damage to the printer.
Step
Actions and questions
1
Second transfer roll assembly—Check the second
transfer roll for any signs of toner buildup, surface
damage to the roll, oil, or other contaminants on the
surface of the roll.
Do you see any problems with the second transfer roll?
2
Transfer arms, springs, and associated hardware—
Contact your next level of support. None of these parts
are service related parts.
Is there any problem with the associated hardware?
3
Transfer high voltage power supply, HV wiring, and
contacts—Check the second transfer cable (transfer
HVPS contact to the second transfer roll rear arm
contact) for correct installation.
Is the cable installed correctly?
Cause
The print cartridges are
defective or empty.
• The print cartridges are
defective.
• Your printer requires
servicing.
• The Type, Texture, and
Weight settings are not
appropriate for the type
of paper or specialty
media you are using.
• The paper has been
stored in a high
humidity environment.
"Print quality service check" on page
Solution
Replace the print cartridges.
• Replace the print cartridges.
• Call for service.
• Change Paper Type, Paper Texture, and Paper
Weight to match the paper or specialty media
loaded in the printer.
• Load paper from a fresh package.
• Store paper in its original wrapper until you
use it.
Yes
Replace the
second transfer
roll. See
"Second
transfer roll
removal" on
page
4-88.
Contact your next
level of support.
Go to step 4
Diagnostic information
5061
2-93:
No
Go to step 2
Go to step 3
Install the cable
correctly.
2-109

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