Ricoh A156 - Page 42

Symbol
Index
No.
Description Note
S23 43
Auto Response (Not
used on A161/A162
copiers)
Returns the operation panel display and
exits from the energy saver mode.
S24 23
Transfer Belt Contact
HP
Informs the CPU of the current position of
both the transfer belt unit and the drum
charge roller unit.
S25 13
Auto Image Density
(ADS Sensor)
Detects the background density of each
original in ADS mode.
S26 44
Original Width Detects the width of the original. This is one
of the APS (Auto Paper Select) sensors.
S27 19
Original Length-1 Detects the length of the original. This is one
of the APS (Auto Paper Select) sensors.
S28 56
Duplex Paper End
(Duplex machines only)
Detects paper in the duplex tray.
S29 57
Duplex Turn
(Duplex machines only)
Detects the trailing edge of the copy paper to
determine the jogging timing, and detects misfeeds.
S30 62
Duplex Entrance
(Duplex machines only)
Detects misfeeds.
S31 59
Side Fence Jogger
HP (Duplex machines
only)
Detects the home position of the duplex side
fence jogger.
S32 64
End Fence Jogger
HP (Duplex
machines only)
Detects the home position of the duplex end
fence jogger.
S33 22
Original Length
(Option for N.
American models)
Detects original length for 11" x 15" paper.
Switches
SW1 33
By-pass Feed Table Detects whether the by-pass feed table is
open or closed.
SW2 36
Upper Tray
(Non-duplex
machines only)
Detects whether the upper paper tray is in
place or not.
SW3 35
Lower Tray Detects whether the lower paper tray is in
place or not.
SW4 104
Tray Down
(LCT machines only)
Sends a signal to the CPU to lower the LCT
bottom plate.
SW5 25
Upper Tray Paper Size
(Non-duplex
machines only)
Determines what size of paper is in the
upper paper tray.
SW6 34
Lower Tray Paper
Size
Determines what size of paper is in the
lower paper tray.
SW7 32
Vertical Guide Set
(Non-LCT machines only)
Detects whether the vertical guide is open or not.
SW8 105
LCT Cover-1
(LCT machines only)
Detects whether the LCT cover is open or not.
SW9 103
LCT Cover-2
(LCT machines only)
Cuts the dc power line of the LCT lift motor.
SW10 42 Main Supplies power to the copier.
SW11 41
Front Cover Safety Detects whether the front door is open and
via relays cuts the ac power.
SW12 48
Exit Cover Safety
(A157/A160
machines only)
Detects whether the exit cover is open or not.
Rev. 7/95
A156/A160/A162 1-14 STM