Canon 3260 manual Off

CHAPTER 2

a. Cassette detection/cassette paper size detection/cassette paper level detection

The upper and lower cassettes detection is executed by the upper cassette sensor (PS1202) and the lower cassette sensor (PS1201). The paper detection in the upper and lower cassettes is exe- cuted by the upper cassette paper out sensor (PS1208) and the lower cassette paper out sensor (PS1207). The paper size detection is executed by the upper and lower cassette paper size detec- tion switches (SW1601 to SW1604) installed to each cassette. Each cassette has the four switches. The combinations of the cassette paper size detection switches are shown in Table 2- 5-1.

	Table 2-5-1
	Cassette paper-size sensing switch
Paper size	SW1601	SW1602	SW1603	SW1604
Ledger	OFF	OFF	OFF	OFF
A3	OFF	ON	OFF	OFF
B4	ON	OFF	OFF	OFF
Legal	ON	ON	OFF	OFF
Letter	OFF	OFF	OFF	ON
A4	OFF	OFF	ON	OFF

The remaining paper level in the cassette is detected according to the lifter position. The lifter contains a light blocking plate which blocks two sensors on the pick-up PCB. The lifter position is detected by these sensors. And, as a result, the remaining paper level in the cassette is detect- ed.

The remaining paper level in the upper cassette is detected by the combination of outputs from the upper cassette paper level sensor 1 (PS1205) and the upper cassette paper level sen- sor 2 (PS1206). The paper level in the lower cassette is detected by the combination of outputs from the lower cassette paper level sensor 1 (1203) and the lower cassette paper level sensor 2 (PS1204). Figure 2-5-6 shows the combinations of PS1205/PS1203 and PS1206/PS1204.

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