PAPER FEED 10 August, 2001
2-54
2.8.8 PAPER SIZE DETECTION
There are four paper size microswitches [A] on the front right plate of the paper tray
unit. The switches are actuated by a paper size actuator [B] behind the paper size
indicator plate, which is on the front right of the tray.
Each paper size has its own actuator, with a unique combination of notches. To
determine which size has been installed, the CPU reads which microswitches the
actuator has switched off.
The CPU disables paper feed from a tray if the paper size cannot be detected. If
the paper size actuator is broken, or if there is no tray installed, the Add Paper
indicator will light.
When the paper size actuator is at the “*” mark, the paper tray can be set up to
accommodate one of a wider range of paper sizes by using user tools. If the paper
size for this position is changed without changing the user tool setting, a paper jam
will result.
B027D523.WMF
SW
Size
1234
A3
❍❍❍❍
A4 Sideways
##
❍
#
A4 Lengthwise
##
❍❍
A5 Lengthwise,
8
1/2
" x 14"
❍❍
##
B4, 11" x 17"
#
❍
#
❍
B5 Sideways,
11" x 8
1/2
"
#
❍❍❍
B5 Lengthwise,
8
1/2
" x 11"
❍
###
* (Asterisk)
❍
#
❍
#
#
: ON (Not pushed)
❍: OFF (Pushed)
[A]
[B]
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