Canon imagePROGRAF TM-300 36" Large-Format Inkjet Printer with L36ei Scanner Kit - Manual (Page 370)

7. Examine the test pattern for adjustment. Determine the straightest set of lines.
Example 1: Select "+2" in pattern (C).
Example 2: Move the angle adjustment lever to a position between the numbers or between the number
and the square (D) of the two sets of lines that are least misaligned. In this case, select -1.
8. Open top cover and move angle adjustment lever to match number (or square) of
straightest set of lines.
9. Close the top cover.
The print head is now straight, and adjustment is complete.
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