Canon iR4570 Series Service Manual page 777

P019 0 Manual feed clutch
1 Registration clutch
2 Sleeve clutch
3 Duplex transport clutch
(iR2270/2270F/2870/2870F model only)
4 Cassette 2 retry sensor
5 Cassette 2 paper sensor
6 Cassette 2 paper level A sensor
7 Cassette 2 paper level B sensor
P020 0 Polygon motor standby signal
1 Bottle rotation motor
2 Hopper screw motor
3 Pre-exposure board
4 First paper ejection motor current switching
0
5 First paper ejection motor current switching
1
6 Heat exhaust fan F
7 Pre-exposure light quantity switching
P021 0 Manual feed detection sensor
1 Toner detection
2 Duplex transport sensor
3 Heat exhaust fan F lock detection
4-7 For development
P022 0-7 For development
P023 0 Duplex motor current switching 10
1 Duplex motor current switching 11
2 Heat exhaust fan R
3 For development
4 Waste toner sensor
5 For development
6 Pre-exposure switching
7 For development
1:ON
1:ON
1:ON
1:ON
1:Detected
1:No paper
1Half or less
1:About 50 sheets or less
1:STBY
1:ON
1:ON
1:Pre-exposure with large
quantity of light
-
-
1:ON
1:Pre-exposure with
medium quantity of light
0:Paper present
1:Toner remaining
1:Detected
0:Locked
-
-
1:ON
-
0:Full
1:Pre-exposure with small
quantity of light