Lexmark 13P0150 - C 750dtn Color Laser Printer, Руководство по обслуживанию

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2-52
Service Manual
5060-XXX
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 a “83 ITU Maintenance” message displays. Ask the customer if they have replaced
the second transfer roll recently.
Note: If any of the following problems occur go to the Print Quality Service Check
•
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 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”
on page 4-41
Go to Step 2
2
Transfer Arms, Springs and associated hardware - Call your
next level of support. None of these parts are service
related parts.
Is there any problem see with the associated hardware? Call your next
level support Go to Step 3
3
Transfer High Voltage Power Supply, HV wiring and
contacts - Check the Second Transfer Cable (Transfer
HVPS contact I to the Second Transfer Roll Rear Arm
Contact) for correct installation.
Is the cable installed correctly? Go to step 4 Install the
cable correctly
4
Check the continuity of the Second Transfer Cable.
Is there continuity? Replace the
FRU's in order:
1)
“Second
Transfer Roll”
on page 4-41
2) “HVPS
Transfer
Board” on
page 4-12
. If
this does not
correct the
problem, go to
step 6.
Replace the
Second
Transfer Cable
5
Check to make sure the ITU Bias Spring is not broken or
missing for the color(s) that is having Transfer problems.
Is the ITU Bias Spring broken, off or missing? Repair as
necessary Go to step 7