HP 5n C3952A, C2021A PC Tray 2 and LC Tray 3 Tray Size Sensing System, Microswitch Signals, Trays

Table 5-3		Microswitch Signals
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

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.

Table 5-4	Switch Settings for PC (Tray 2) and LC (Tray 3)
	Trays
Tray Size		SW603	SW604	SW605
		(Upper)	(Middle)	(Lower)
Letter		ON	OFF	ON
Legal		ON	ON	OFF
A4		OFF	OFF	ON
Executive		OFF	ON	ON
Tray Not Installed		OFF	OFF	OFF

Functional Overview 5-9