Ricoh Aficio FT4027, Service Manual

Page: 517 / 685

Symbol Name Function Index No.
S29
Duplex Turn
(Duplex machines only) Detects the trailing edge of the copy paper
to determine the jogging timing, and
detects misfeeds.
54
S30
Duplex Entrance
(Duplex machines only) Detects misfeeds.
59
S31
Side Fence Jogger HP
(Duplex machines only) Detects the home position of the duplex
side fence jogger.
56
S32
End Fence Jogger HP
(Duplex machines only) Detects the home position of the duplex
end fence jogger.
61
S33
Original Length
(Option for N. American
models) Detects original length for 11" x 15" paper.
21
Switches
SW1
By-pass Feed Table Detects whether the by-pass feed table is
open or closed.
32
SW2
Tray Down
(LCT machines only) Sends a signal to the CPU to lower the
LCT bottom plate.
102
@
SW3
Upper Tray Paper Size
(Non-duplex machines
only) Determines what size of paper is in the
upper paper tray, and detects when the
tray has been closed.
@
The upper tray switch has been
eliminated.
24
@
SW4
Lower Tray Paper Size Determines what size of paper is in the
lower paper tray, and detects when the tray
has been closed.
@
The lower tray switch has been
eliminated.
33
SW5
Vertical Guide Set
(Non-LCT machines
only) Detects whether the vertical guide is open
or not.
31
SW6
LCT Cover-1
(LCT machines only) Detects whether the LCT cover is open or
not.
103
SW7
LCT Cover-2
(LCT machines only) Cuts the dc power line of the LCT lift motor.
101
SW8 Main Supplies power to the copier. 39
SW9
Front Cover Safety Cuts the ac power line and detects whether
the front door is open or not.
38
SW10
Exit Cover Safety
(A211 machines only) Cuts the ac power line and detects whether
the exit cover is open or not.
45
Magnetic Clutches
CL1
Toner Supply Turns the toner supply roller to supply
toner to the development unit.
69
CL2 Development Drives the development roller. 68
ELECTRICAL COMPONENT DESCRIPTIONS
A207/A208/A211 1-14 SM