Detecting The Size Of Paper In The Cassette - Canon iR1600 Service Manual

2.1.4 Detecting the Size of Paper in the Cassette

The size of paper inside the cassette is detected by the DC controller PCB in relation to
the position of the paper size lever of the cassette set by the user.
When the cassette is fitted to the machine, the paper size lever pushes the paper size
switch (SW105) found inside the machine, enabling the machine to detect the presence/ab-
sence of a cassette and the size of paper inside it.
The paper size switches are arranged as follows, and the combination of push switches
pressed by the paper size lever is used to detect the size of paper.
Paper size switch
PSSN4
PSSN3
A3 A4 A4R A5
PSSN 1
PSSN 2
PSSN 3
PSSN 4
: push switch is pressed.
: push switch is not pressed.
: not used.
*
COPYRIGHT© 2002 CANON INC.
(SW105)
PSSN1
PSSN2
A4 A5 B5 LGL LTR STMT U2
A3 A4R B4 B5R 11x17 LTRR U1 U3
Paper size lever
F06-201-06
B4 B5 B5R LGL 11x17
T06-201-01
2000 CANON iR1600/iR2000 REV.1 JAN. 2002
CHAPTER 6 PICKUP/FEDING SYSTEM
LTR LTRR STMT U1* U2* U3*
6-7