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B245/B276/B277/B268/B269 Service Manual
Original Size
A4/A3 version LT/DLT version
A3
B4
8.5" x 13"
A4-SEF
A4-LEF
B5-LEF
A5-LEF
—
0: High (no paper), 1: Low (paper present)
The above table shows the outputs of the sensors for each original size. This original size
detection method eliminates the necessity for a pre-scan and increases the machine's
productivity.
For other combinations, "Cannot Detect Original Size" will be indicated on the operation
panel display (if SP 4303 is kept at the default setting).
However, if the by-pass feeder is used, note that the machine assumes that the copy paper
is short-edge first. For example, if A4 paper is placed long-edge first on the by-pass tray,
the machine assumes it is A3 paper and scans the full A3 area for the first copy of each
page of the original, disregarding the original size sensors. However, for each page, the
data signal to the laser diode is stopped to match the copy paper length detected by the
registration sensor. This means that copy time for the first page may be slower (because of
the longer time required for scanning), but it will be normal for the rest of the job.
Original size detection using the ADF is described in the manual for the ADF.
Length Sensors
L2
11" x 17"
1
8.5" x 14"
1
—
1
8.5" x 13"
0
11" x 8.5"
0
8.5" x 11"
0
8.5" x 5.5"
0
8.5" x 13"
0
Width Sensors
L1
W2
W1
1
1
1
1
0
1
1
0
0
1
0
0
0
1
1
0
0
1
0
0
0
1
0
1
18-Jan-06
SP 4301
display
11110000
11010000
11000000
01000000
00110000
00010000
00000000
01010000
185
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