Chapter 9
9-9
9.4
Protective Functions
9.4.1
Protective Functions
0006-6009
iR2270 / iR2870 / iR3570 / iR4570
As part of its protective mechanism, the machine has a thermo switch, triacs, and a relay. Protective measures
according to location are described below:
1. When the thermistor is out of order
Software detects a failure, and the triac and the relay are turned off.
The thermo switch is turned off.
2. When the CPU goes out of control
The latch circuit detects the excessive temperature rise, and the relay is turned off.
The thermo switch is turned off.
3. When the triac short-circuits
Software detects failure, and the relay is turned off.
The latch circuit detects the excessive temperature rise, and the relay is turned off.
The thermo switch is turned off.
Protective Circuit Block Configuration Diagram
F-9-5
DCON
CPU
A/D
and
and
and
and
AC driver
Tr
S_TH
M_TH
SW
Summary of Contents for iR4570 Series
Page 2: ...Download Free Service Manual And Resetter Printer at http printer1 blogspot com ...
Page 6: ...Download Free Service Manual And Resetter Printer at http printer1 blogspot com ...
Page 28: ...Download Free Service Manual And Resetter Printer at http printer1 blogspot com ...
Page 81: ...Chapter 2 Installation ...
Page 82: ......
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Page 106: ...system setup network Ethernet driver setup auto detect ...
Page 126: ...F 2 94 3 2 3 1 ...
Page 127: ...Chapter 3 Basic Operation ...
Page 128: ......
Page 130: ......
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Page 137: ...Chapter 4 Main Controller ...
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Page 165: ...Chapter 5 Original Exposure System ...
Page 166: ......
Page 213: ...Chapter 6 Laser Exposure ...
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Page 231: ...Chapter 7 Image Formation ...
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Page 249: ...F 7 13 1 2 3 4 ...
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Page 309: ...Chapter 8 Pickup Feeding System ...
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Page 465: ...Chapter 9 Fixing System ...
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Page 501: ...Chapter 10 External and Controls ...
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Page 565: ...Chapter 11 MEAP ...
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Page 573: ...Chapter 12 Maintenance and Inspection ...
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Page 613: ...Chapter 13 Standards and Adjustments ...
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Page 635: ...Chapter 14 Correcting Faulty Images ...
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Page 675: ...T 14 22 Notation Description VR201 for factory use ...
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Page 677: ...Chapter 15 Self Diagnosis ...
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Page 757: ...Chapter 16 Service Mode ...
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Page 760: ...Contents 16 8 1 COPIER 16 102 16 8 1 1 Copier List 16 102 ...
Page 869: ...Chapter 17 Service Tools ...
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Page 871: ...Contents Contents 17 1 Special Tools 17 1 17 2 Oils and Solvents 17 2 ...
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Page 875: ...Oct 8 2004 ...
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