Chapter 77-58[6] Toner supply screw[7] Developing assembly[8] Sensor flag[9] Toner retainer motor drive signal[10] Toner retainer motor error detection signal[11] Hopper motor drive signal[12] Hopper motor error detection signal[13] Hopper motor error detection signal[14] Developing motor error detection signal[15] Side driver PCBM27 to M31: Toner retainer motorM39 to M43: Hopper motorCL1: Developing clutchPS68 to PS72: Toner Supply Level SensorThis machine has toner supply level sensors (PS68 to PS72) to perform accurate toner supply.This sensor detects the sensor flag installed at the supply screw shaft. This flag is moved forth and back by the activation of the toner supply motor. When the flagtravels once, the supply screw rotates to supply the specified amount of toner into the developing assembly.At toner supply, the side driver PCB monitors this sensor while activating the hopper motor. After toner supply is completed, the motor is stopped. Accurate tonersupply is completed by this step.Related Error CodeE025-0101: Y toner retainer motor errorE025-0201: M toner retainer motor errorE025-0301: C toner retainer motor errorE025-0401: Bk toner retainer motor errorE025-0501: L toner retainer motor errorThis error (overcurrent detection) occurs in the case that the power voltage of the toner retainer motor exceeds the specified value when supplying toner (while thestirring plate is operated).Related Error CodeE025-0102: Y hopper supply errorE025-0202: M hopper supply errorE025-0302: C hopper supply errorE025-0402: Bk hopper supply errorE025-0502: L hopper supply errorThis error occurs in the case that the detection time for toner supply level sensor exceeds the specified value when supplying toner (while the toner feeding screwis operated).Related Error CodeE025-0103: Y toner retainer motor connection detection errorE025-0203: M toner retainer motor connection detection errorE025-0303: C toner retainer motor connection detection errorE025-0403: Bk toner retainer motor connection detection errorE025-0503: L toner retainer motor connection detection errorIn the case of detecting that the connector of the toner retainer motor is disconnected.Related Error CodeE025-0004: Hopper Shutter ErrorIn the case of supplying toner while the hopper shutter is closedRelated Error CodeE023-0001: Developing motor errorWhen the motor is detected as out of locking state for 1 sec or more after its stable rotation.7.8.7 Toner Level Detection 0012-9297imagePRESS C1 P / imagePRESS C1This machine employs two different methods shown below to detect toner level of each color in the hopper assembly.1. Video count detection2. Piezo sensor detectionToner level is detected at all times. When the amount of toner falls below a specified volume, the side driver PCB sends 2 types of message (Toner Low, TonerEmpty) to the main controller via the DC controller.Below is a table showing how each message relates to toner level.T-7-15*1: The percentage indicates the toner level in the toner container.*2: The percentage indicates the toner level in the toner path between the hopper assembly and the developing assembly.If switching OFF/ON the knob on the toner container during the period between Toner Low 1 and Toner Low 2, the machine considers the toner container has beenreplaced, and clears the toner level counter.Message Type Message Content Toner level DetectorToner Low1 'Prepare a new toner cartridge.' (Printing can be continued.) 10% (See *1.) Video countToner Low 2 'Replace the toner cartridge.'(Printing can be continued.) 0% (See *1.) Piezo sensorToner Empty ‘Replace the toner container.’ (Printing cannot be continued.) 0% (See *2.) Video count
