Ricoh JP5000 Service Manual page 32

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SCANNER AND OPTICS
The platen cover sensor [C] or the DF position sensor [D] informs the main CPU of
the original size when the platen is about 15 cm above the exposure glass. At this
time, only the sensors located underneath the original receive the reflected light
and switch on. The other sensors remain off. The main CPU can recognize the
original size from the number of activated sensors.
Original Size
A4/A3 version
A3
B4
F4
A4—L
B5—L
A4—S
B5—S
NOTE: 1) O: On (Paper Present), X: Off
2) The length sensors L3 and L4 are only used in the 220/240V machines.
The above table shows the sensor output for each original size. A message will
appear in the operation panel display for other combinations.
LT/DLT version
11" x 17"
10" x 14"
8
" x 14" (8" x 13")
1/2
8
" x 11"
1/2
-
11" x 8
"
1/2
-
Length Sensors
L1
L2
L3
O
O
O
O
O
O
O
O
O
O
O
X
O
X
X
X
X
X
X
X
X
2-4
1 July, 1998
Width Sensors
L4
S1
S2
O
O
O
O
O
X
X
X
X
X
X
X
X
X
X
X
O
O
X
O
X

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