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14 ADF unit explanation ENWW
d Scanning the last sheet of original
When PS301 (last original) turns off
while scanning is in progress, currently
scanned original is processed as the
last original. The pre-feed of the original
stops, and with PS302 (original setting)
turned off, the original feed tray is
detected as empty. M301 (original feed)
and M302 (original conveyance) stop
when the specified time has passed
after the original has passed through
PS303 (original exit) and original
ejection has completed.
e Original skew detection control
PS307 (original skew/F) and PS308
(original skew/R) are provided to detect
the inclined leading edge of the original
during conveyance. PS307 and PS308
are placed at the front and back of the
pre-scan conveyance path and
determine the inclination in interval at
which the leading edge of the original
turns these switches on. A skewed
image caused by original inclination is
corrected through image processing
and image data is written.
f FM301 (original feed motor cooling fan)
operation
FM301 is used to cool M301 so that
M301 does not overheat during
operation.
1 ON timing
At the start of DF
2 OFF timing
When M302 is off
2 Signals
a Input signal
1 24V (MS301 to SCDB)
Open/close detection signal of Jam
access cover.
[L]: Cover opened
[H]: Cover closed
2 SIG (PS301 to SCDB)
Last sheet of original on the original
feed tray detected
[L]: Original present
[H]: No original
3 SIG (PS302 to SCDB)
No original on original feed tray
detection signal
[L]: Original present
[H]: No original
4 SIG (PS303 to SCDB)
Original exit detection signal
[L]: Original present
[H]: No original
5 SIG (PS311 to SCDB)
ADF open/close detection signal
[L]: ADF closed
[H]: ADF opened
6 SIG (PS304 to SCDB)
Original detected at the entrance of
the registration roller
[L]: Original present
[H]: No original
7 SIG (PS305 to SCDB)
Original detected for double side
original copy mode
[L]: Original present
[H]: No original
8 SIG (PS306 to SCDB)
Original detected before the scan
position
[L]: Original present
[H]: No original
9 SIG (PS307 to SCDB)
Front side original skew detection
signal
[L]: Original present
[H]: No original