Canon CLBP-460PS, Service Manual, Page: 338 / 566

I. GENERAL TIMING CHART
A - 1
Timing chart for W AIT period
Bk developing
unit initialization
(Refer to A-2) Y, M, C developing
unit initialization
(Refer to A-2)
Image density control
(Refer to A-21, 22) Mechanical initialization
(Fixing unit/pick-up system initialization)
Initialization (ITB unit initialization)
HP1 HP2 HP3 HP4 HP5 HP6 HP7
Sequence
Power-ON
WAIT STBY
M-CPU ON
command
163
°
C
163
°
C
Upper fixing heater (HU)
Lower fixing heater (HL)
Controller fan (FM1)
Engine fan (FM2)
Front fan (FM3)
ITB home position
Fixing motor (M2)
Drum motor (M3)
Pick-up motor (M1)
Registration clutch (CL1)
ITB unit contact clutch (CL2)
Primary charging bias (AC)
Primary charging bias (DC)
Primary transfer DC bias
Secondary transfer roller contact clutch
Secondary transfer DC bias
ITB cleaning roller contact clutch (CL3)
ITB cleaning (AC) bias
ITB cleaning (DC) bias
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Low speed
rotation
100
°
C
Standby temperature
1.85
0.5
4.49
0.61
1.01
0.61
0.71
1.21
7.15 3.75 3.75
1.55
1.54
0.43
3.08
2.42
3.18
3.66
1.29
2.76
6.58
3.08
0.47 3.00
1.11
1.25
2.34
2.36
2.47 0.77 5.87
2.04
4.60
1.90
0.25
0.16
0.05
2.19
0.35
2.37
2.24
3.13
2.13
2.03
2.08
1.29
1.85
5.00
0.15
3.42
(Unit: second)
Counter clockwise
rotation
Negative bias Positive bias
Positive bias
Negative bias
Positive bias Negative bias
ITB unit contact period
ITB cleaning roller
contact period