PAPER FEED TRAY /1 TO /3 hp Color 9850mfp 8.2.3 Remaining paper detection control paper in the tray is getting reduced, the actuator provided at the front of the tray rotates gradually. The The amount of remaining paper is detected by the remaining paper sensor 1 (PS32). As the amount of PS32 turns on and off each time a slit in the actuator passes through. The engine control section counts the number of on/off's of the PS9 after the installation of the tray to detect the amount of remaining paper in 4 steps. The detection of no paper is made by the no paper sensor 1 (PS31).
II UNIT EXPLANATION [1] [2] [3] [6] [5] [4] [1] Rotational direction when the up/down plate goes up [4] Slit 2 [2] [5] Slit 3 Remaining paper sensor 1 (PS32) [3] Slit 1 [6] Actuator 2-44 No. of the slit counts Remaining paper in the tray Indication of remaining amount on the operation board 0 100 to 75% 4 lines lit 1 75 to 50% 3 lines lit 2 50 to 25% 2 lines lit 3 25 to 0% 1 lines lit