Canon ImageRunner iR8500 Series Service Manual page 891

Address Bit Description
P002 0 not used
1 not used
2 not used
3 not used
4 pickup roller home position
5 pickup roller height sensor 2
6 pickup roller height sensor 1
7 pre-reversal sensor
P003 0 not used
1 original detection sensor LED
2 not used
3 not used
4 not used
5 not used
6 not used
7 not used
P004 0 original sensor
1 original trailing edge sensor
2 last original front sensor
3 not used
4 separation motor
5 delivery motor
6 24 V logic down detection
7 24 V power down detection
P005 0 separation sensor
1 separation sheet-to-sheet clock
2 belt motor clock detection
3 registration roller rear paper sensor
4 manual feed registration roller paper
5 not used
6 not used
7 not used
P006 0 serial data output
1 D/A load path
2 EEPROM serial input
3 EEPROM chip select
4 serial reference clock
5 separation motor clock detection
6 not used
7 not used
P007 0 belt motor mode 1
1 belt motor mode 2
2 belt motor reference clock
3 belt motor CW/CCW
4 separation motor PWM
5 reversal motor phase B
6 delivery motor PWM
7 reversal motor phase A
Notation Remarks
PI7 1: HP
PI9 1: original present
PI8 1: original present
PI4 1: original present
0: emit
S6 0: original present
1: original present
S8 1: original present
M4
M5
S4 0: original present
during outputs,
repeats '0' and '1'
PI1 during outputs,
repeats '0' and '1'
S3 0: original present
S9 1: original present
1: transmit
1: transmit
1: receive
0: select EEPROM
during outputs,
repeats '0' and '1'
PI2 during outputs,
repeats '0' and '1'
M2 at all times, '0'
M2 at all times, '0'
M2 during outputs,
repeats '0' and '1'
M2 0: delivery direction
M4 during outputs,
repeats '0' and '1'
M1 during outputs,
repeats '0' and '1'
M5 during outputs,
repeats '0' and '1'
M1 during outputs,
repeats '0' and '1'
Chapter 17
17-47