Chapter 1717-20T-17-11shading RAM chip selectAddress Bit Description RemarksP001 0 reader heat discharge fan 1 stop detection 1: off1 reader heat discharge fan 1 1: ON2 reader heat discharge fan 2 stop detection 1: off3 reader heat discharge fan 2 1: ON4 not used5 DDI-S command signal6 DDI-S command signal7 DDI-S command signalP002 0 xenon lamp control signal 0: ON1 power supply monitor (24V system) 1: 24V2 power supply monitor (13V system) 1: 13V3 not used4 scanner motor control signal 1: ON5 sub scanning detection signal 0: ON6 sub scanning detection signal 0: ON7 main scanning detection signal 0: ONP003 0 DDI-S command signal1 ADF serial communication (TxD)2 DDI-S command signal3 ADF serial communication (RxD)4 start-up check LED5 DDI-S command signal6 not used7 not usedP004 0 DDI-S command signal1 DDI-S command signal2 reader start-up signal3 CPU operation mode setup4 not used5 not used6 scanner motor reference voltage7 not usedP005 0 PC I/F1 PC I/F2 DDI-S command signal3 DDI-S command signal4 not used5 not used6 not used7 not usedP006 0 not used1 for factory mode2 original size detection control signal 1: ON3 main scanning detection signal 0: ON4 image lead edge signal 0: ON5 scanner home position signal 0: HPdetected6 not used7 copyboard closed detection signal 0: closedP007 0 address bus1 address bus2 address bus3 not used4 download start5 ADF reset signal6 ADF mode setup7 DDI-S command signal
