Chapter 22-47F-2-1174) The machine rotates the transport belt. The original is moved over a specific distance after its trail edge has moved past the reversal sensor (S1), and is thenstopped.F-2-1185) The host machine starts printing operation.F-2-1196) When the host machine's scanner starts to move in reverse, the machine starts to rotate the transport belt and the delivery roller, thus moving the original to thedelivery assembly.F-2-120Sequence of OperationF-2-1212.7 Detecting Jams2.7.1 Overview 0011-2392The machine checks for jams using the following sensors. The CPU on the ADF controller PCB runs a check at such times as programmed in advance, and detectsthe presence/absence of a jam in relation to the presence/absence of paper over a specific sensor.Upon detection of a jam, the machine communicates the fact to the host machine, which in turn indicates the fact in service mode in the form of a code. A checkmay also be made with reference to the indicator (LED2) of the machine's ADF control PCB.Service Mode Screen of the Host MachineReversal sensor(S1)Reversal sensor(S1)CopyStart key ONOriginal placed in manual feederBelt motor (M2)Delivery solenoid (M5)Reversal solenoid(SL4)Manual feeder placementsensor(PI 12)Reversal sensor(SL1)Original deliverysensor(PI 1)Original placed inmanual feeder(PI 13)pickup print dischargemoveoriginal placed0.4 sec (approx.)