Sharp AR-6020V Service Manual page 123

10. Toner supply section
A.Mechanism relation diagram
TNM
Signal name Name Function and operation
TNM Toner motor Drives the toner cartridge.
B.Operational descriptions
The toner transport screw in the toner cartridge is driven by the toner motor to supply toner to the developing unit.
The toner transport screw in the toner cartridge is turned ON/OFF by the toner motor. The toner density in the developing unit is detected by
the toner density sensor. When the density falls below the specified level, the toner motor is turned ON to supply toner in the toner cartridge to
the developing unit. When the toner density reaches the specified level, the toner motor turns OFF to stop supply of toner to the developing
unit. With the above process, the toner density in the developing unit is maintained at a fixed level.
AR-6020V OPERATIONAL DESCRIPTIONS 11 – 16