Epson 890N Service Manual - Page 96

EPSON FX-890/2190 Revision B Platen Gap (PG) [mm] 11. Put an adjustment gauge between the Printhead and the PLATEN vertically, and judge and adjust the platen gap by referring to Table 5-3 below. For adjustment, turn the SHAFT,CR,GUIDE toward the PLATEN (widen) or toward the front (lessen). (See Figure 5-2, Figure 5-3) Table 5-3. Criteria for Platen Gap Adjustment Gauge Criterion 0.37 mm Falls by its own weight 0.40 mm Does not fall by its own weight Normal Mode Copy Mode 12. After completion of the adjustment with the carriage located at the right end, make the judgment with the carriage at the left end and then at the center. 13. When the adjustment is completed, put the printer down and tighten the hexagon nut and the washer securing the adjust lever. 14. Attach the ribbon mask onto the ribbon mask holder. CHECK P O IN T After the adjustment, perform printing and make certain that there is no problem with print quality. „ Single sheet: The printed side of paper must be free from soiling caused by rubbing with the ribbon. „ Multi-part form: The copy paper must be free from blurs or traces of rubbing. „ Continuous paper (perforated uncut paper): There must be no catch at perforations in uncut paper. C A U T IO N „ Do not rotate the PLATEN during the adjustment. „ Be sure to set the Adjust Lever to the position "0" when adjusting the platen gap. Paper Thickness [mm] Figure 5-2. Platen Gap Adjustment 2 Note1: The numbers followed with # represent the Adjust Step Numbers. 2: The paper thickness at the boundary of two adjacent Platen Gaps is included in the paper thickness range for the lower Platen Gap. 3: "Platen Gap" means the clearance, as shown in Figure.7, between the platen and the wire end without the ribbon or paper in between. The Platen Gap must always meet the appropriate range as shown in Figure 6 under any conditions. φ 36.3 mm or more Platen Head Nose Wire end Platen Gap Figure 5-3. Platen Gap Adjustment 3 Adjustment Adjusting and Resetting the Printer 96