1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
STBY
WAIT
STBY
INTR
PRINT
LSTR
Print Command
Main Motor (M1)
Fuser Heater (H1)
Fuser Motor (M2)
Scanner Motor(M3)
Cassette Pickup Solenoid (SL1)
Tray 1 Pickup Solenoid (SL2)
Paper Feeder Pickup Solenoid (SL3)
Top of Page Sensor (PS801)
Delivery Sensor (PS803)
Primary Charging Bias (AC)
Primary Charging Bias (DC)
Developing Bias (AC)
Developing Bias (DC)
Transfer Charging Bias
Laser Diode
LASER BEAM signal (BD)
0.2
0.5
0.7
3.7
3.9
3.0
About 1.39
About 1.05
About 1.46
0.09
0.23
0.8
0.34
0.27
1.5
0.78
About 0.44
1.43
About 0.7
About 0.4
3.2
About 1.2
0.09
0.23
0.16
0.16
0.23
0.23
0.47
0.2
0.5
About 0.22
About 0.22
About 7.4
About 1.5
About 6.2
About 3.3
Power Switch ON
SEQUENCE
120°C Control
Negative Bias
120°C Control
Forced emission
(Unit:Seconds)
Figure 4-17 Timing diagram
60 Chapter 4 Theory of operation ENWW
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