542 JAN 2006Ver. 5.2DP-3510/3520/3530/4510/4520/4530/6010/6020/603011.1.2.3. Power Supply System11.1.2.3.1. OutlineThe Finisher Controller PCB is supplied with 24 VDC power when the Copier is turned on. The 24 VDCpower line is used to drive the motor and solenoids. It also serves for sensors and ICs on PCBs after beingconverted to 5 VDC by the Regulator IC(Q14) on the Finisher Controller PCB. The 24 VDC power is alsoused to feed power from the Finisher Controller PCB to the Saddle Stitch Controller PCB. The power is alsosupplied to the Punch Driver PCB when the optional Punch Unit is mounted.Some of the 24 VDC power used to drive motors is cut off when the Door Switch (MS1) is open.The power to the Saddle Stitch Controller PCB and the Punch Driver PCB, however, will not be cut off.Fig. 2-074 is a block diagram showing the power supply system.Fig. 2-07411.1.2.3.2. Protection FunctionsThe 24 VDC power line used to drive motors and solenoids is equipped with a Circuit Breaker (CB1) forprotection against overcurrent. The 24V line used to drive the First Feed Motor (M1), Alignment Motor (M3),and Stapler Shift Motor (M4) are equipped with a fuse, which is designed to blow when an overcurrentoccurs.Copier24VSaddle StitchController PCBCircuit Breaker(CB1)Finisher Controller PCB(Q14)Regular ICDoor Switch (MS1)24V24V24V5V5VMotorMotorSolenoidSensorsLogicPunch Driver PCB(Punch Unit (optional))
