Brother MFC990CW Service Manual page 326

A: Leading-edge print start position
B: Checking for horizontal streaks
C, E, H, K, M: Margin adjustments for borderless printing
D: Paper feed roller adjustment
F: Adjustment of vertical print lines
G: Head positioning adjustment
I: Adjustment of discharging conditions of all nozzles
J: Checking for vertical streaks
L: Paper ejection roller adjustment
Total Check Pattern
7-28
A
B
C
D
E
F
G
H
I
J
K
L
M
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