Read Sharp AR-810 (serv.man16) Service Manual online
AR-651/810 DEVELOPER UNIT 12 - 9
12. 5. Auto-toner Sensor Circuit
12. 5. 1. General description
(1) Functions of auto-toner circuit
• Detection of the toner density in the developer material
~ density lowered toner supplied
• Detection of the toner being empty in the toner cartridge
(2) Configuration of auto-toner circuit
• Auto-toner sensor
: Detecting the toner density
• Control section
: Controlling to keep the developer material toner density constant
• New toner supply motor
: Supplying new toner to the developer material
• Display unit
: Displaying the toner empty status
• Recycle toner hopper motor
: Supplying the recycle toner to the developer material
촞
BC-RAM
IC32
CPU
IC6
GA
IC27
PWA-SYS
PWA-LGC
CPU
IC58
IC58
95C063F
GA
IC56
LCA301
IC18
MB88347
TA8428
IC38
TA8428
IC37
Control panel
New
toner
toner
Toner
motor
motor
Auto-toner sensor
Developer material
Developer unit
Toner cartridge
Control
voltage
signal
Toner density signal
D/A
converter
Operation/control section
Display unit
Hopper
motor
motor
Recycle
toner
toner
Recycle toner hopper
Main
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