Epson 2200 Service Manual - Page 189

Main adjustment items EPSON Stylus PHOTO 2100/2200 Revision B Table 5-1. Servicing Adjustment Items Function Item Purpose Method Outline Tool Head angular adjustment PF adjustment PW sensor adjustment Bi-D adjustment This adjustment is made to correct the error in the Head mounting position (angle of the Head to the print surface) to keep the nozzle intervals uniform in the main scanning direction. This adjustment is made to correct the variations of paper loading accuracy in the band printing mode to improve print quality. This adjustment is made to correct the mounting position of the PW sensor on a software basis to minimize the paper detection error caused by the variations of the mounting position. This adjustment is made to correct the print timing in the go and return paths in bi-directional printing. Pixel shift adjustment This adjustment is made to correct the variations of the ink injection speeds of the Nozzle lines in VSD 4 printing to reduce the displacements of the image in high resolution. CR timing belt tension adjustment This adjustment is made to prevent a tooth skip between the CR motor and Timing belt, which occurs with the increased size of the CR, in order to optimize the Timing belt tension. Select this function in the exclusive servicing program and print the adjustment pattern. Check the displacement amount of the pattern and move the Adjust lever on the right side face of the CR unit as required. Print the exclusive pattern again and adjust the displacement amount. Select this function in the exclusive servicing program and print the adjustment patterns (9 patterns). Select and enter the pattern number that has the smallest gap and overlap. The correction value is saved to the specific EEPROM address on the Main board. Select this function in the exclusive servicing program and print the adjustment patterns. Select the pattern number 5mm away from each edge, and enter that number in the program. The correction value is saved to the specific EEPROM address on the Main board. Select this function in the exclusive servicing program and print the adjustment patterns to check the displacement amounts of the patterns. Select/enter the pattern number that has the smallest displacement amount in the program. Print the exclusive patterns again and adjust the displacement amount. The correction value is saved into the EEPROM. In the VSD 4 mode, select the pattern that has the smallest displacement amount from the printed rule patterns per line, and enter it into the program. The correction value is saved into the EEPROM. Insert a thickness gauge (0.3mm or less) between the Pulley frame and Fixing plate and secure the Fixing plate. • Exclusive servicing program • Adjust lever built in the CR unit Exclusive servicing program Exclusive servicing program Exclusive servicing program Exclusive servicing program Thickness gauge 0.3mm Used Media Photo Quality Ink Jet Paper 2 (A4) Plain Paper (A4) Plain Paper (A4) Photo Quality Ink Jet Paper 2 (A4) Photo Quality Ink Jet Paper 2 (A4) Target ADJUSTMENT Adjustment Items and Overview 189