Electrical Component Descriptions - Ricoh FT7770 Service Manual

ELECTRICAL COMPONENT DESCRIPTIONS

1. Motors
Charge Fan (M-13)
Charge Corona Wire
Cleaner (M-14)
Development (M-4)
Development Cooling
Fan (M-11)
Duplex Side Plate
(M-7)
Fusing Exhaust Fan
(M-9)
Lens/Mirror (M-3)
Lower Tray (M-6)
Main (M-1)
Optics Cooling Fan
(M-8)
Ozone Fan (M-12)
Scanner (M-2)
TC/SC Wire Cleaner
(M-16)
Upper Tray (M-5)
Vacuum Fan (M-10)
2. Magnetic Clutches
Duplex Paper Feed (MC-3) 45
Lower Paper Feed (MC-2) 86
Registration (MC-4)
Toner Supply (MC-5)
Upper Paper Feed (MC-1) 67
Duplex Tray Drive (MC-6)
125 24-volt dc motor: Provides airflow to the
charge corona to prevent uneven build up
of positive ions.
64
12-volt dc motor: Drives the charge corona
wire cleaner.
Hall effect motor: drives the development
124
unit.
100-volt ac motor: relay controlled: Keeps
107
the development unit cool to prevent toner
sticking together.
38 Stepper Motor: drives the duplex tray side
plate for even stacking in the duplex tray.
132 100-volt ac motor: relay controlled: pre
vents the build up of resin gasses and
toner particles.
8 Stepper motor: positions the lens and mir-
rors.
71 100-volt ac motor: drive board controlled:
raises and lowers the lower paper tray.
112 DC servomotor: controlled by the main
motor control board.
101 100-volt ac motor: thermoswitch controlled:
circulates air through the optics cavity.
47 100-volt ac motor: drive board controlled:
removes ozone created by the 5 corona
wires.
100 DC servomotor: controlled by the scanner
motor control board.
60 12-volt dc motor: drives the transfer and
separation corona wire cleaner.
68
100-volt ac motor: drive board controlled:
raises and lowers the upper paper tray.
30
Turns on at the same time as, and has the
same characteristics as the ozone fan
Drives the duplex feed rollers.
Drives the lower paper feed rollers.
26 Drives the registration rollers.
123 Drives the toner supply roller.
Drives the upper paper feed rollers.
136 Drives rollers in the duplex tray.
1-27
30 April, '89