Table of contents
1
Theory of operation
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1
Basic operation
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2
Sequence of operation
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3
Engine control system
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4
DC controller
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5
Solenoids
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6
Clutches
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6
Switches
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6
Sensors
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7
Motors and fans
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7
High voltage power supply
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10
Low voltage power supply
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12
Overcurrent/overvoltage protection
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14
Safety
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14
Sleep (powersave) mode
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14
Power supply voltage detection
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14
Low voltage power supply failure
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14
Power off condition
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15
Fuser control
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15
Fuser temperature control circuit
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16
Fuser over temperature protection
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17
Fuser failure detection
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18
Laser/scanner system
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19
Image formation system
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21
Image formation process
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22
Step 1: Pre-exposure
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23
Step 2: Primary charging
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23
Step 3: Laser-beam exposure
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24
Step 4: Development
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24
Step 5: Primary transfer
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25
Step 6: Secondary transfer
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25
Step 7: Separation
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26
ENWW
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