Canon iR8500 Service Manual page 679

SERVICE MODE
COPIER>I/O
<FEEDER (2/4)>
Address bit
IO-P04 0 original sensor
1 original trailing edge sensor
2 pre-last original sensor
3 not used
4 separation motor
5 delivery motor
6 24V logic down detection
7 24V power down detection
IO-P05 0 separation sensor
1 separation sheet-to-sheet distance clock
2 belt motor clock detection
3 post-registration roller paper sensor
4 manual feed registration roller paper sensor
5 not used
6 not used
7 not used
IO-P06 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
IO-P07 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
IO-P08 0 image leading edge signal
1 pre-registration roller paper sensor
S-36
Description
COPYRIGHT© 2001 CANON INC.
Notation
S6 0: original present
1: original present
S8 1: original present
M4
M5
S4 0: original present
during output,
alternately '0' and '1'
PI1 during output,
alternately '0' and '1'
S3 0: original present
S9 1: original present
1: transmit
1: transmit
1: receive
0: EEPROM select
during output,
alternately '0' and '1'
PI2 during output,
alternately '0' and '1'
M2 at all times, '0'
M2 at all times, '0'
M2 during output,
alternately '0' and '1'
M2 0: delivery direction
M4 during output,
alternately '0' and '1'
M1 during output,
alternately '0' and '1'
M5 during output,
alternately '0' and '1'
M1 during output,
alternately '0' and '1'
1: image leading edge
S2 0: original prevent
2000 2000 2000 2000 CANON iR8500/7200 REV.1 AUG. 2001
Remarks