Ricoh FW780 Service Manual - Page 422

ELECTRICAL COMPONENT DESCRIPTIONS 1.2 ELECTRICAL COMPONENT DESCRIPTIONS The index numbers refer to the electrical component layout on the reverse side of the Point to Point index (Water proof paper). Name Motors Cutter Roll Feed Magnetic Clutches Roll Feed 1 Roll Feed 2 Switches Right Cutter Left Cutter Dehumidity Sensors Paper End 1 Paper End 2 Leading Edge Door Printed Circuit Board RF Drive Others RF Dehumidity Heater 1 RF Dehumidity Heater 2 Function Drives the cutter (DC Reversible Motor). Drives all mechanical components except the cutter unit (Dc Stepper Motor). Index No. 59 61 Transmits the roll feed motor drive to the 1st roll feed roller. 56 Transmits the roll feed motor drive to the 2nd roll feed roller. 60 Detects whether or not the cutter is at the right home position. 54 Detects whether or not the cutter is at the left home position. 57 Turns on the RF Dehumidity heaters when not copying. 62 Detects when the roll runs out of paper. 51 Detects when the roll runs out of paper. 50 Misfeed detector. Also detects the leading edge of the paper, triggering the paper 55 length pulse count. Indicates "Door Open" on the operation panel and disables the key operation. 58 Controls all roll feed unit functions accordance with copier CPU. 49 Removes humidity from the roll paper. 53 Removes humidity from the roll paper. 52 B435/B436 7-2 SM