2-138 Service Manual
5026
Print quality—white gapping
Step Questions / actions Yes No
1 1. Open the front cover.
2. Remove the toner cartridge base on the
color of the print quality defect.
3. Inspect the cartridge guide for damage or
obstructions. Clear any obstructions.
4. Inspect the cartridge guide wheel if its
dislodged or damaged.
Is the cartridge guide wheel damaged?
Replace the cartridge guide
wheel. See “Cartridge
guide wheel removal” on
page 4-67.
Go to step 2.
2
1. Reinstall all the toner cartridge.
2. Ensure that the photoconductor units are
installed correctly.
3. Reseat the photoconductor.
4. Perform a print test.
Does this fix the problem?
Problem resolved. Go to step 3.
3
1. Reseat JHVPS1 on the system board.
2. Reseat the other end of the cable located
on the HVPS.
3. Check for cuts and damage on the HVPS
cable.
Is the HVPS cable damaged?
Replace the HVPS cable.
See “High-voltage power
supply (HVPS) cable
removal” on page 4-125.
Go to step 4.
4
1. Check the metal contact on the left of the
transfer module for any damage.
2. Check for any contamination, and clear any
contaminants with a piece of cloth.
Are the transfer module contacts damaged?
Replace the transfer
module. See “Transfer
module removal” on
page 4-179.
Go to step 5.
5
1. Open the front cover.
2. Check the spring contact that is in contact
with the transfer module for any damage or
contamination.
Is the spring contact damaged?
Replace the cartridge
contact spring. See
“Contact springs kit
removal” on page 4-83.
Go to step 6.
6
Replace the toner cartridge.
Does this fix the problem?
Problem resolved. Go to step 7.
7
Replace the suspected photoconductor units.
Does this fix the problem?
Problem resolved. Go to step 8.
8
Replace the transfer module.
Does this fix the problem?
Problem resolved. Go to step 9.
9
1. Reseat the HVPS card.
2. Make sure the contacts is properly aligned
with the HVPS.
Does this fix the problem?
Problem resolved. Replace the HVPS. See
“High-voltage power
supply (HVPS) removal”
on page 4-123.
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