Lexmark C78x User Manual

Diagnostic information 2-111
5061
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 “Print quality service check” on page 2-95:
• A problem with only one color
• Light or very light print
Blank pages The print cartridges are
defective or empty.
Replace the print cartridges.
Solid color pages • The print cartridges are
defective.
• Your printer requires
servicing.
• Replace the print cartridges.
•Call for service.
The paper curls badly
once it prints and exits to
a bin.
• 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.
• 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.
Step Actions and questions Yes No
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?
Replace the
second transfer
roll. See
“Second
transfer roll
removal” on
page 4-89.
Go to step 2
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?
Contact your next
level of support.
Go to step 3
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?
Go to step 4 Install the cable
correctly.
Quality troubleshooting (continued)
Symptom Cause Solution
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.

Lexmark C78x Specifications

General

Brand	Lexmark
Model	C78x
Category	Printer
Language	English