5-20 Phaser 6180 Color Laser Printer Service Manual
Print-Quality Troubleshooting
Parallelism
■ Horizontal: 180 mm ± 1.2 mm
■ Vertical: 234 mm ± 1.2 mm
Linearity
■ Horizontal: 190 mm ± 0.5 mm
■ Vertical: 234 mm ± 0.5 mm
■ Slant: 269 mm ± 1.2 mm
s6180-310
234 mm
179.8 mm
I
K
C
Parallelism 
(within ±1.2 mm)
B
E
G
J
H
D
190 mm
234 mm
269 mm
Linearity of
Vertical Line (mm)
(within ±0.5 mm)
Linearity of Horizontal Line (within ±0.5 mm)
Linearity of Slant 
(within ±1.2 mm)
Assumed Perfect Line
Printed Real Line
s6180-313