Ricoh A230 Service Manual page 55

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