Table of contents
1
Theory of operation
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1
Basic operation
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2
Major product systems
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2
Product block diagram
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2
Sequence of operation
.........................................................................................................
3
Normal sequence of operation
............................................................................
3
Formatter-control system
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4
Sleep mode
..........................................................................................................................
4
Input/output
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4
CPU
.....................................................................................................................................
4
Memory
................................................................................................................................
4
Firmware
.............................................................................................................
5
Memory use
........................................................................................................
5
PJL overview
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5
LEDM overview
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5
ACL overview
.......................................................................................................................
5
Control panel
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6
Engine-control system
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7
Motors, fans, clutches, solenoids, switches, and sensors
...................................................
8
DC controller operations
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13
Fuser-control circuit
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15
Fuser failure detection
.......................................................................................
16
Fuser temperature control
.................................................................................
17
Fuser protective function
...................................................................................
18
Pressure roller cleaning
....................................................................................
18
Low-voltage power supply
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19
Overcurrent/overvoltage protection
...................................................................
20
High-voltage power supply
................................................................................................
21
Laser/scanner system
........................................................................................................
22
Laser failure detection
.......................................................................................
23
Image-formation system
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24
Electrophotographic process
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24
Image formation process
...................................................................................................
26
Latent-image formation stage
...........................................................................
27
ENWW
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