MINOLTA-QMS PagePro 4100 Series Service Manual page 55

Cassette Type Detection
Cassette Detection Switch (SW21) with sector levers are provided in the Second Paper
Cassette Unit. When the paper cassette is inserted, the projections on the side of the cas-
sette push and turn on the switches corresponding to each paper size. These three
switches are provided as a set, and the printer recognizes the cassette type (paper size) by
the combination of ON/OFF states of the switches. The printer determines the cassette
type (paper size) by the combination of ON/OFF states of the switches.
1 Paper Cassette
2 Projection
The state of SW21 for each cassette type
Cassette Type SW21-1
A4 OFF
B5 ON
Letter OFF
Legal ON
Executive OFF
No Cassette OFF
(or undefined) ON
ON
3
2
1
3 Cassette Detecting Switch (SW21)
SW21-2 SW21-3
OFF ON
ON OFF
ON OFF
OFF OFF
ON ON
OFF OFF
ON ON
OFF ON
40
OFF
ON
SW21-3
SW21-2
SW21-1
3