Canon iR8500 Service Manual page 682

<FEEDER (2/4)>
Address bit
6 pickup clutch drive signal
7 locking solenoid signal
IO-P03 0 serial communication
1 image leading edge signal
2 serial communication
3 EEPROM data output
4 EEPROM clock
5 EEPROM chip select
6 not used
7 not used
IO-P04 0 original width VR signal
1 post-separation sensor analog signal
2 read sensor analog signal
3 delivery reversal sensor analog signal
4 not used
5 not used
6 not used
7 not used
IO-P05 0 external WDT clock output
1 D/A data output
2 D/A clock output
3 D/A load signal
4 not used
5 not used
6 not used
7 not used
IO-P06 0 EEPROM data input
1 cooling fan lock signal
2 cooling fan
3 not used
4 post-separation sensor signal
5 registration 1 sensor signal
6 read sensor signal
7 delivery reversal sensor signal
IO-P07 0 not used
1 not used
2 not used
3 not used
4 not used
5 not used
6 not used
7 cover open switch
COPYRIGHT© 2001 CANON INC.
Description
2000 2000 2000 2000 CANON iR8500/7200 REV.1 AUG. 2001
SERVICE MODE
Notation Remarks
CL1 1: ON
SL1 1: attracted
transmission (TxD0)
reception (RxD0)
transmission (TxD1)
(SCK0)
VR1 (AN0)
S3 (AN1)
S2 (AN2)
S1 (AN3)
FM1 1: locked
FM1
S3 (IRQ0)
PI1 (IRQ1)
S2 (IRQ2)
S1 (IRQ3)
SW1 1: opened
COPIER>I/O
S-39