2-132 Service Manual
5026
Print quality—blurred or fuzzy print
Blurred or fuzzy print is usually caused by a problem in the EP drive assembly or in the transfer module. Check
the EP drive assembly and transfer module for correct operation.
Blurred print can also be caused by incorrect feeding from one of the input paper sources, paper trays, or duplex
paper path.
Check the high voltage spring contacts to ensure they are not bent, corroded, or damaged. Replace as
necessary.
Print quality—half-color page
A photoconductor unit is not properly seated. Reset the specific photoconductor unit.
Print quality—horizontal banding
6
Turn off the printer and check the continuity of
the HVPS cable.
Go to step 7. Replace the cable
assembly.
Is there continuity?
7
Replace the HVPS. See “High-voltage
power supply (HVPS) removal” on
page 4-94.
Did this fix the problem?
Problem solved. Go to step 8.
8
Replace the printhead. See “Printhead
removal, installation, and adjustment” on
page 4-121.
Did this fix the problem?
Problem solved. Replace the system board.
See “System board
removal” on page 4-139.
Step Questions / actions Yes No
1 Measure the distance between repeating
bands.
Is the distance between bands either 27 or
36mm?
Replace the print cartridge. Replace the
photoconductor unit. See
“Photoconductor unit
removal” on page 4-118.
Step Questions / actions Yes No
Pin 24
Pin 23
Pin 1Pin 2
Pin 2
Pin 1
Pin 23
Pin 24
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