Phaser 6180 Color Laser Printer Service Manual 5-37
Print-Quality Troubleshooting
Horizontal Stripes
There are black lines running parallel with the leading edge of the print, 
perpendicular to the direction of the paper travel.
Initial Actions
■ Check the paper transfer path.
■ Ensure there are no debris on the transfer path.
Troubleshooting Reference Table
Applicable Notes Example Print
■ Transfer Unit, PL4.1.1
■ Print Cartridge (C/M/Y/K),
PL5.1.18-21
■ Laser Unit, PL5.1.2
■ Fuser, PL6.1.10
■ MCU Board, PL9.1.20
■ Image Processor Board, PL9.1.27
ABCDE abcde 12345
s6180-323