7. The ETB carries the paper past the print cartridges, where toner is transferred onto the
paper, and into the fuser.
Figure 5-35.
Cassette pickup operation
Cassette detection and cassette paper size detection
The printer can sense whether the cassette (Tray 2) is installed correctly, and it can sense
the size of the paper in the cassette. Paper size detection switches along the side of the
cassette send this information to the DC controller. The DC controller is able to determine
which size is loaded by reading the state of the various switches according to the
Table 5-5.
Cassette paper size detection/cassette detection.
Table 5-5. Cassette paper size detection/cassette detection
Paper size Paper length detection switch Paper width detection switch
SW1 SW2 SW3 SW4 SW5 SW6
A3 on off on on off na
A4
landscape
off off on on off na
A4 portrait on off off off off na
(11 x 17
inches)
on off on on on na
Letter
landscape
off off on on on na
Letter
portrait
on on off off off na
B4 on off on off on na
ENWW Pickup/feed system 173
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