Table of contents
1
Theory of operation
Basic operation
.....................................................................................................................................
2
Sequence of operation
.........................................................................................................
3
Engine-control system
..........................................................................................................................
4
DC controller
........................................................................................................................
5
Solenoids
............................................................................................................
5
Clutches
..............................................................................................................
6
Switches
..............................................................................................................
6
Sensors
...............................................................................................................
7
Motors
.................................................................................................................
8
Fans
.....................................................................................................................................
9
High-voltage power supply
................................................................................................
10
Low-voltage power supply
.................................................................................................
12
Overcurrent/overvoltage protection
...................................................................
13
Safety
................................................................................................................
13
Voltage detection
..............................................................................................
13
Sleep (powersave) mode
..................................................................................
13
Low-voltage power supply failure
......................................................................
13
Fuser control
......................................................................................................................
14
Fuser temperature control
.................................................................................
15
Fuser sleeve temperature protection
................................................................
15
Failure detection
................................................................................................
16
Fuser unit identification
.....................................................................................
17
Fuser unit life detection
.....................................................................................
17
Laser/scanner system
........................................................................................................................
18
Laser/scanner failure
.........................................................................................................
19
Protective-glass cleaners
...................................................................................................
19
Image-formation system
.....................................................................................................................
21
Image-formation process
...................................................................................................
22
Step 1: Pre-exposure
........................................................................................
24
Step 2: Primary charging
...................................................................................
24
Step 3: Laser-beam exposure
...........................................................................
25
Step 4: Development
.........................................................................................
25
Step 5: Primary transfer
....................................................................................
26
ENWW
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