Oce 3121 Technical & Service Manual page 868

L-TEST6: Vertical line test print
6
Use it to check straight lines.
I
If a discrepancy is noted, suspect a displaced laser beam or a fault in beam
I
detection.
L-TEST7: Horizontal line test print
7
Use it to check straight lines.
I
If a discrepancy is noted, suspect a displaced laser beam or a fault in beam
I
detection.
56 TSM Océ 3121 SDS Description