Ricoh FT4227 Manual page 250

ELECTRICAL COMPONENT DESCRIPTION
Symbol Name
SW12 Front door safety
SW13 Main
SW14 LCT cover - 1
(LCT machine
only)
SW15 LCT cover - 2
(LCT machine
only)
SW16 LCT down (LCT
machine only)
Lamps
L1 Quenching
L2 Pre-transfer
L3 Fusing
L4 Exposure
L5 Erase
Magnetic
Clutches
MC1 Development
drive
MC2 Toner supply
MC3 By-pass feed
MC4 Feed relay
MC5 Registration
Function
Cuts the ac power line through RA1 and
detects if the front door is open or not.
Supplies power to the copier.
Detects if the LCT cover is open or not.
Cuts the dc power line of the LCT lift motor.
Sends a signal to the CPU to lower the LCT
bottom plate.
Neutralizes any charge remaining on the
drum surface after cleaning.
Reduces the charge on the drum surface
before transfer.
Provides heat to the hot roller.
Applies high intensity light to the original
exposure.
Eliminates the charge for unnecessary
areas of the image on the drum surface
before exposure.
Drives the development roller.
Drives the toner supply roller.
Starts paper feed from the by-pass feed
table or LCT.
Drives the relay rollers.
Drives the registration rollers.
1-20
12 February 1992
Index No.
91
95
83
84
85
47
49
60
99
48
11
14
17
19
20