Toshiba 4560 Service Manual page 147

10.5 Auto-Toner Sensor Circuit
10.5.1 Brief description
• Functions of the auto-toner circuit.
• Detects the density of the toner in the developer material.
~ Density drops
• Detects that the toner in the toner cartridge has been used up (toner empty).
• Configuration of auto-toner circuit.
• Auto-toner sensor: Detects toner density.
• Control section:
• Toner motor:
• Display unit:
Display
Toner
Toner
motor
Toner sensor
Developer material
4560/4570 DEVELOPER
toner supply.
Performs control to maintain the toner in the developer material at a constant
specific density.
Replenishes the toner in the developer material.
Displays the toner-empty status.
Toner cartridge
Control voltage signal
Toner density signal
Developer unit
DA converter
IC46
IC46
M62353(A03)
10 - 14
Arithmetic and control unit
PWA-LGC
CPU
IC35
95C063F
BC-RAM
IC37
Nov. 1997 © TOSHIBA