Epson 2200 Service Manual - Page 54

EPSON Stylus PHOTO 2100/2200 Revision B 2.2.4 Paper Loading Mechanism The Paper loading mechanism is designed to transfer the paper fed from the ASF, Roll paper guide or Board paper guide or the CD-R fed from the CD-R tray according to the print data. 2.2.4.1 Paper Loading Mechanism The Paper loading mechanism consists of the PF roller and Paper eject rollers to transfer paper. The Paper feeding (PF) motor is a DC motor. The following table indicates the PF motor specifications. Table 2-11. PF Motor Specifications Item Specifications Type Drive voltage Winding resistance DC motor with brushes +42V +/- 5% (voltage applied to driver) 23.0Ω +/- 25% Inductance Drive method 24.0m +/- 25% PWM Drive IC A3958 Like the Stylus PHOTO 2000P, this product uses closed loop control by means of the DC motor and rotary encoder to improve paper loading accuracy. The rotary encoder is installed on the left end of the roller shaft to control the paper loading amount. The driving force of the PF motor is transmitted to the PF roller and Paper eject rollers in the following paths. ! PF roller drive transmission path PF motor/pinion gear → Spur gear 76 → PF roller shaft ! Paper eject roller drive transmission path PF motor/pinion gear → Spur gear 76 → Combination gear 17, 24.5 → Spur gear 43 → Paper eject roller shaft A The following shows the part names and outline of the PF roller driving force transmission path. With the driving force transmitted in above paths, paper is transferred in the following path. PF motor/pinion gear → Spur gear 76 → Combination gear 17, 24.5 → Spur gear 62 → Paper eject roller shaft B Spur gear 76 Combination gear 17, 24.5 PF motor pinion gear Spur gear 62 Spur gear 43 PF roller Paper eject roller A Front paper guide PF motor Paper eject roller B Figure 2-9. Paper Loading Mechanism 1 OPERATING PRINCIPLES Printer Mechanism 54