Chapter 77-22F-7-297.7.5 Detecting the Toner Level and Controlling the Toner Supply Mechanism 0010-8067iR7105 / iR7095 / iR7086The following shows the components associated with the machine's toner supply control system:F-7-30DC controller PCBJ510A J723 J7213456789101112131415161718 123456789101112131415160 V24 VH24 VHHVDC_REMOTEDEV_DC_CNTRDEV_AC_ONGNDGND1 2 3 4Relay PCBDeveloping cylinderJ732Voltage input between 0 and 12 V,used to control the voltage levelof the developing DC bias.500VImage areaNon-imageareaThe developing DC bias varies as followsaccording to the potential of DEV_DC_CNTR:3V 11V 12VDEV_DC_CNTRDeveloping DC biasAC output: 1200 VppWhen '1', high-voltageoutput is ready.When '1', the developingAC bias is generated.211718High-voltage DC PCBMagnet rollerDeveloping assembly toner sensor TS3Toner sensor TS1;inside the bufferBuffer toner lower limit sensor TS2Purpose: to keep the toner inside the developing assembly to a specific level.Operation: upon detection of the absence of toner, the machine rotates the magnetroller to supply toner to the developing assembly.Purpose: to detect the absence of toner inside the buffer.Operation: upon detection of the absence of toner,the machine stops the ongoing operation, andindicates a message to that effect.Purpose: To keep the toner inside the hopper to a specific level.Operation: If the absence of toner is detected, the toner feeding screwinside the sub hopper is rotated to supply the buffer with toner.Sub hopper toner sensor (TS4)Toner bottleSub hopperPurpose: to keep the toner inside the sub hopper to a specific level.Operation: upon detection of the absence of toner, the machine rotatesthe toner feedscrew inside the sub hopper to supply toner to the buffer.
