Actions Yes No
Step 4
Check the imaging unit contact block (A), including the white and
red wires, for damage or improper installation.
Is the imaging unit contact block free of damage and properly
installed?
Go to step 5. Contact the next
level of support.
Step 5
Replace the power supply. See
“Power supply removal” on
page 216.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
Vertical light bands check
Note: Before performing this print quality check, go to the control panel home screen and navigate to
Settings > Troubleshooting > Print Quality Test Pages, and then perform the Initial print quality check. See
“Initial print quality check” on page 26.
4600-830, -835, -895
Diagnostics and troubleshooting
50