The control that switches the paper level display on the Control Panel is as follows:• When the icon displayed on the Control Panel shows 3 bars or 2 bars:The paper level is detected based on the time for which the Cassette 2 Lifter Motor remains ON. Or, the paper level is detectedbased on the time from when the Cassette 2 Paper Sensor is turned ON to when the Cassette 2 Lifter Sensor is turned ON.The paper level during paper feed is detected based on the signal status of the Cassette Paper Level Sensor that changesas the Cassette Lifter Plate is lifted up.• When the icon displayed on the Control Panel shows 2 bars or 1 bar:The icon displayed on the Control Panel changes to "1 bar" when the Cassette 2 Paper Level Sensor is turned ON.Related service mode• Adjustment of the threshold value for detection of the Cassette X paper level (Lv.2):COPIER > ADJUST > CST-ADJ > CST-VLMXLifting PlateDetection LeverPaper Detection LeverLifting PlateLifter GearPaper LevelDetection LeverCassetteLifter MotorCassette PaperLevel SensorCassette PaperSurface SensorCassettePaper Sensor2. Technical Explanation13