Canon CLC 1120 Service Handbook page 132

CHAPTER 4 SERVICE MODE
Address bit
P01F 15 not used
14 not used
13 not used
12 not used
11 not used
10 not used
9 not used
8 not used
7 ozone suction fan (FM5) drive signal
6 not used
5 primary charging assembly fan (FM3) full speed
drive signal
4 primary charging assembly fan (FM3) half speed
drive signal
3 laser scanner motor cooling fan (FM4) drive signal
2 not used
1 electrical unit cooling fan (FM8) full speed drive
signal
0 electrical unit cooling fan (FM8) half speed drive
signal
P020 15 not used
14 not used
13 not used
12 not used
11 not used
10 not used
9 not used
8 not used
7 ozone suction fan (FM5) error detection
6 primary charging assembly fan (FM3) error
detection
5 laser scanner motor cooling fan (FM4) error
detection
4 electrical unit cooling fan (FM8) error detection
3 not used
2 back suction fan (FM16) error direction
1 exhaust fan (FM2) error detection
0 IP cooling fan (FM7) error detection
4-46
Description
I/O>DC-CON
Remarks
1: ON
1: full speed, 0: half speed
1: half speed, 0: full speed
1: ON
1: full speed, 0: half speed
1: full speed, 0: half speed
1: error
1: error
1: error
1: error
1: error
1: error
1: error