Diagnostic information 2-131
5026
Print quality—blank page
6
Clean the printhead.
Does this fix the problem?
Problem solved. Replace the printhead. See
“Printhead removal,
installation, and
adjustment” on
page 4-121.
Step Questions / actions Yes No
1 Is all the packing material for the
photoconductor unit in question removed?
Go to step 2. Remove the packing
material.
2
Replace the photoconductor unit for the color
in question.
Does this fix the problem?
Problem solved. Go to step 3.
3
4
Enter the Diagnostics mode (turn off the
printer, press and hold and . and turn on
the printer). Perform the appropriate cartridge
drive motor test for the missing color. See
“General motor tests procedures” on
page 3-9.
Did the motor run?
Go to step 5. Replace the EP drive
assembly. See
“Electrophotographic
(EP) drive assembly
removal” on page 4-69.
5
Check the high voltage contact from the
HVPS to the photoconductor charge roll.
Ensure the contact springs are properly
mounted and that the charge roll contact
spring is making good contact with the HVPS
spring that runs through the left printer frame
to view the proper mounting and for removal
procedures.
Are the spring(s) defective?
Replace the transfer
contact assembly.
Go to step 6.
Step Questions / actions Yes No
High voltage
contact path
High voltage
power supply
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