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PC (Tray 2) and LC (Tray 3) Tray Size Sensing
System
Trays inserted into the printer trigger specific microswitches,
which define the tray size (see Table 5-4). Refer to Figure 7-1 for
location.
Switch Description PCA
SW601 Door Open Sensing Switches (front and rear) Paper Control PCA
SW602 Test Print Switch Paper Control PCA
SW603 PC tray (Tray 2) Size Sensing Switches Paper Control PCA
SW604 PC tray (Tray 2) Size Sensing Switches Paper Control PCA
SW605 PC tray (Tray 2) Size Sensing Switches Paper Control PCA
SW851 Lower Cassette (Tray 3) Size Sensing Switches Lower Cassette
SW852 Lower Cassette (Tray 3) Size Sensing Switches Lower Cassette
SW853 Lower Cassette (Tray 3) Size Sensing Switches Lower Cassette
Table 5-3
Microswitch Signals
Tray Size SW603
(Upper)
SW604
(Middle)
SW605
(Lower)
Letter ON OFF ON
Legal ON ON OFF
A4 OFF OFF ON
Executive OFF ON ON
Tray Not Installed OFF OFF OFF
Table 5-4 Switch Settings for PC (Tray 2) and LC (Tray 3)
Trays
Functional Overview 5-9