Chapter 7
7-4
7.3 Cassette Pick-Up Unit
7.3.1 Outline
0013-1108
iR1020J / iR1024J / iR1020 / iR1024 / iR1024A / iR1024N / iR1024F / iR1024i / iR1024iF
Paper is picked up from the cassette under the control of the CPU on the DC controller PCB and using the drive of the main motor (M1). When the cassette pickup
solenoid (SL2) goes ON, the drive of the main motor (M1) is transmitted to the cassette pickup roller assembly
to rotate the cassette pickup roller.
When the cassette pickup roller rotates, a single sheet of paper is separated from the stack by the separation claws of the cassette, and is sent as far as the registration
roller by way of the feed roller.
After the paper passes a registration sensor (SR11), the paper reaches the registration roller. At this time the registration roller is at rest, causing the leading edge
of the paper to butt against it to form an arch.
The DC controller PCB turns on the registration clutch (CL1) at specific timing to transmit the drive of the main motor to the registration roller, thereby moving
the paper ahead. The paper reaches the delivery tray after moving through the transfer, separation, and fixing/delivery assemblies.
The deliver tray has a delivery paper full sensor (SR10) to detect that the delivered sheets are stacked fully.
When the total height of the delivered sheets reaches the specified value and the delivery paper full sensor (SR10) turns on, this machine detects occurrence of an
error and displays an error message on the LCD.
F-7-3
7.3.2 Retry Pickup
0013-1109
iR1020J / iR1024J / iR1020 / iR1024 / iR1024A / iR1024N / iR1024F / iR1024i / iR1024iF
If the registration sensor (SR11) does not detect paper within a specific period of time after the cassette pickup roller has started to rotate, the machine will start to
rotate the cassette pickup roller once again to execute a retry pickup operation.
If the registration sensor (SR11) still does not detect paper within a specific period of time after executing a retry pickup 3 times, the machine will identify the
condition as a jam and will indicate a jam message on the LCD of its control panel.
7.3.3 Detecting the Size of Paper
0013-1110
iR1020J / iR1024J / iR1020 / iR1024 / iR1024A / iR1024N / iR1024F / iR1024i / iR1024iF
The cassette paper size detection is performed using the registration sensor (SR11) based on the length of paper. In fax mode, if paper of a size different from the
size selected from the control panel is placed, the DC controller will identify a paper size mismatch at the end of printing and indicate a message on the LCD.
SR9
SR10
SR11
SR5
SL2
CL1
M1
Summary of Contents for iR1020 Series
Page 1: ...Sep 1 2008 Service Manual iR1020 1021 1024 1025 Series ...
Page 2: ......
Page 6: ......
Page 17: ...Chapter 1 Introduction ...
Page 18: ......
Page 20: ......
Page 49: ...Chapter 1 1 29 ...
Page 50: ......
Page 51: ...Chapter 2 Installation ...
Page 52: ......
Page 54: ......
Page 61: ...Chapter 2 2 7 ...
Page 62: ......
Page 63: ...Chapter 3 Basic Operation ...
Page 64: ......
Page 66: ......
Page 73: ...Chapter 3 3 7 ...
Page 74: ......
Page 75: ...Chapter 4 Original Exposure System ...
Page 76: ......
Page 78: ......
Page 87: ...Chapter 5 Laser Exposure ...
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Page 90: ......
Page 94: ......
Page 95: ...Chapter 6 Image Formation ...
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Page 103: ...Chapter 7 Pickup Feeding System ...
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Page 120: ......
Page 121: ...Chapter 8 Fixing System ...
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Page 135: ...Chapter 9 External and Controls ...
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Page 138: ......
Page 151: ...Chapter 10 Original Feeding System ...
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Page 156: ...Chapter 10 10 2 M2001 ADF motor Symbol Name ...
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Page 171: ...Chapter 11 e maintenance imageWARE Remote ...
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Page 185: ...Chapter 12 Maintenance and Inspection ...
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Page 191: ...Chapter 13 Standards and Adjustments ...
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Page 201: ...Chapter 14 Correcting Faulty Images ...
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Page 215: ...Chapter 15 Self Diagnosis ...
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Page 224: ......
Page 225: ...Chapter 16 Service Mode ...
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Page 232: ...Chapter 16 16 2 Makes various status checks such as contact sensor sensor and print status ...
Page 278: ......
Page 279: ...Chapter 17 Upgrading ...
Page 280: ......
Page 282: ......
Page 297: ...Chapter 18 Service Tools ...
Page 298: ......
Page 299: ...Contents Contents 18 1 Service Tools 18 1 18 1 1 Special Tools 18 1 ...
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Page 303: ...Sep 1 2008 ...
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