2-56 Service Manual
5022-xxx
Print quality—blank page
2
Replace the PC unit. See “Photoconductor
unit removal” on page 4-70.
Does this fix the problem?
Problem solved. Go to step 3.
3
Check the high voltage contact from the HVPS
to the transfer belt assembly.
Is a problem found?
Replace the spring or the
transfer contact assembly.
See “Transfer contact
assembly removal” on
page 4-92.
Go to step 4.
4
Reseat the JHVPS connector.
Does this fix the problem?
Problem solved. Go to step 5.
5
Replace the HVPS. See “High voltage power
supply (HVPS) removal” on page 4-62.
Does this fix the problem?
Problem solved. Go to step 6.
6
Clean the printhead.
Does this fix the problem?
Problem solved. Replace the printhead. See
“Printhead removal” on
page 4-74.
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 , turn on the
printer, and release the buttons when the clock
graphic displays), and run the appropriate
cartridge drive motor test for the missing color.
See “General motor tests” on page 3-8.
Did the motor run?
Go to step 5. Replace the EP drive
assembly. See
“Electrophotographic (EP)
drive assembly removal—
model C52x only” on
page 4-48 or
“Electrophotographic (EP)
drive assembly removal—
model C53x only” on
page 4-51.
Step Questions / actions Yes No
Transfer belt high voltage
path (typical 4X)
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