Brother International HL-3400CN Service Manual - Page 169
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HL-3400CN SERI/10E MANUAL 3.4 3.4.1 Adjustment Work Procedures Adjustment of top and left margin The top and left margins can be adjusted by button operation on the control panel. If there is no top margin or left margin set for the print guarantee area or when the MCTL PWB is replaced, the adjustment of top and left margin will be required. (1) Execute "GRID PRINT" in Service Mode. (2) Measure the position 'A' and 'B' of top margin. [Leading edge] (A + B) / 2 ≤ Default Value 4.0 ± 1.5mm (3) Measure the position 'C' and 'D' of left margin. [Left edge] (C + D) / 2 ≤ Default Value 3.0 ± 1.5mm (4) If the specification value is not met, implement the adjustment. Execute "43 MARGIN ADJUST" in the FACTORY MODE. (5) After adjustment execute "GRID PRINT" and confirm the margins. Paper feeding direction , Leading dedge co lir Left margin CAI" D-llob \ Print \ Guarantee \ Area \ Fig. 5-2 5-47