Ricoh A230, Service Manual, Page: 55 / 1134

ELECTRICAL COMPONENT DESCRIPTIONS
1-14
A230/A231/A232 SM
Symbol
Index
No.
Description Note
S17 48 Upper Tray Informs the CPU whether the upper paper
tray is set into the machine or not.
S18 46 Lower Tray Informs the CPU whether the lower paper
tray is set into the machine or not.
S19 38 Transfer Belt
Position Informs the CPU of the current position of
the transfer belt unit.
S20 18 Toner Overflow Detects toner overflow in the toner
collection tank.
Switches
SW1
43
Right Lower
Cover Detects whether the right lower cover is
open or closed.
SW2 49 Right Upper
Cover Cut the +5VLD and +24V dc power line
and detects whether the right upper cover
is open or closed.
SW3 51 Main Power
Switch Supplies power to the copier. If this is off,
there is no power supplied to the copier.
SW4 52 Front Cover
Safety Cuts the +5VLD and +24V dc power line
and detects whether the front cover is
open or not.
SW5 10 Operation
Switch Provides power for machine operation.
The machine still has power if this switch
is off.
Magnetic Clutches
CL1
39 Transfer Belt Controls the touch and release movement
of the transfer belt unit.
CL2 40 Registration Drives the registration rollers.
CL3 44 Relay Drives the relay rollers.
CL4 41 Upper Paper
Feed Starts paper feed from the upper paper
tray.
CL5 42 Lower Paper
Feed Starts paper feed from the lower paper
tray.
Lamps
L1
13 Exposure Applies high intensity light to the original
for exposure.
L2 16 Fusing Provides heat to the hot roller.
L3 25 Quenching Neutralizes any charge remaining on the
drum surface after cleaning.
Heaters
H1
1 Optics Anti-
condensation
(option) Turns on when the main power switch is
off to prevent moisture from forming on
the optics.
H2 47 Tray
(option) Turns on when the main power switch is
off to keep paper dry in the paper tray.
Thermistors