Canon Troubleshooting Image Malfunctions: Printing Output Using a Counter (4.4.2)

CHAPTER 4 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS

6.2.5 Sensors (1/3)

• Reader Unit
Electrical signal (target)	Reference to general	I/O address	Remarks
Name	circuit diagram	I/O indication
PS400 (R-CON)	A3-18-H	IO-P06-4
Scanner home position sensor		1: HP
PS401 (R-CON)	A3-17-H	IO-P06-6
Copyboard cover sensor		0: open, 1: closed	(copyboard/ADF)
SD1 (R-CON)	A3-19-H	IO-P03-5
Original sensor		0: present, 1: absent	(paper)
		IO-P04-4
		0: ON, 1: OFF

• Printer Unit (1/3)

Electrical signal (target)	Reference to general	I/O address	Remarks
Name	circuit diagram	I/O indication
BD (DC-CON)	A3-13-K
BD sensor
PS1 (DC-CON)	A3-19-N	P013-5
Cassette 1 paper sensor		0: present, 1: absent	(paper)
PS2 (DC-CON)	A3-19-M	P014-5
Cassette 2 paper sensor		0: present, 1: absent	(paper)
PS3 (DC-CON)	A3-20-M	P013-6
Cassette 1 paper			(paper)
level sensor 1			25% (bit6=0; bit7=1)
PS4 (DC-CON)	A3-20-M	P013-7	50% (bit6=1; bit7=1)
Cassette 1 paper			100% (bit6=0; bit7=0)
level sensor 2
PS5 (DC-CON)	A3-20-M	P014-6
Cassette 2 paper			(paper)
level sensor 1			25% (bit6=0; bit7=1)
PS6 (DC-CON)	A3-20-M	P014-7	50% (bit6=1; bit7=1)
Cassette 2 paper			100% (bit6=0; bit7=0)
level sensor 2
PS7 (DC-CON)	A3-20-M	P015-0
Cassette 1 re-try		1: present, 0: absent	(paper)
paper sensor

COPYRIGHT © 2001 CANON INC. CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001 4-57 T