Chapter 5
5-15
5.3.6.7 Shading Correction
0006-5938
iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N /
/ iR4570N / iR2230 / / / iR3530 /
The machine executes this correction for every scan made in main shading
unit. It measures the density of the standard white plate, and compares the
result against the target value stored in the shading correction circuit; the dif-
ference between the two will be held as the shading correction value for use
in correcting variation among CCD pixels when scanning the original, thus
evening out the density levels of the image.
F-5-28
5.4 Parts Replacement Procedure
5.4.1 Copyboard glass
5.4.1.1 Removing the Copyboard Glass
0006-9714
iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N /
/ iR4570N / iR2230 / / / iR3530 /
1) Open the copyboard cover (or ADF).
2) Remove the 2 screws [1], and detach the glass retainer [2]; then, detach
the copyboard glass [3].
F-5-29
When removing the copyboard glass, take care not to touch the following:
- glass surface
- standard white plate
The presence of dirt can cause white/black lines in the images. If dirt is
found, clean it with lint-free paper moistened with alcohol.
F-5-30
5.4.1.2 Removing the ADF Reading Glass
0006-9730
iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N /
/ iR4570N / iR2230 / / / iR3530 /
1) Open the copyboard glass (or ADF).
2) Remove the 2 screws [1], and detach the glass retainer [2].
3) Remove the ADF reading glass [3].
F-5-31
When removing the ADF reading glass, take care not to touch the glass sur-
face.The presence of dirt can cause white/black lines in the images. If dirt is
found, be sure to clean it using lint-free paper moistened with alcohol.
5.4.2 Reader Controller PCB
5.4.2.1 Before Replacing the Reader Controller PCB
0007-0740
iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N /
CCD output
Original density
Standard white plate
Characteristics before
Target value
Measurement
Characteristics after co
White
Содержание iR3570 Series
Страница 1: ...Jan 17 2007 Service Manual iR4570 3570 2870 2270 Series...
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Страница 27: ...Chapter 1 Introduction...
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Страница 71: ...Chapter 2 Installation...
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Страница 147: ...Chapter 3 Basic Operation...
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Страница 155: ...Chapter 4 Main Controller...
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Страница 187: ...Chapter 5 Original Exposure System...
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Страница 217: ...Chapter 5 5 27 F 5 91...
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Страница 219: ...Chapter 6 Laser Exposure...
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Страница 231: ...Chapter 7 Image Formation...
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Страница 279: ...Chapter 7 7 43 F 7 241 2 Remove the screw 1 F 7 242 3 Detach the static eliminator 1 to the front F 7 243...
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Страница 281: ...Chapter 8 Pickup Feeding System...
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Страница 389: ...Chapter 9 Fixing System...
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Страница 421: ...Chapter 10 External and Controls...
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Страница 437: ...Chapter 10 10 11 F 10 12 2 Remove the check mark from SNMP Status Enabled...
Страница 438: ...Chapter 10 10 12 F 10 13...
Страница 440: ...Chapter 10 10 14 F 10 15...
Страница 475: ...Chapter 11 MEAP...
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Страница 481: ...Chapter 12 Maintenance and Inspection...
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Страница 509: ...Chapter 13 Standards and Adjustments...
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Страница 521: ...Chapter 14 Correcting Faulty Images...
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Страница 537: ...Chapter 14 14 9 43mm s b Z x i j B iR4570_395 s u A B FM2 0287...
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Страница 539: ...Chapter 14 14 11...
Страница 585: ...Chapter 15 Self Diagnosis...
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Страница 623: ...Chapter 16 Service Mode...
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Страница 679: ...Chapter 17 Upgrading...
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Страница 693: ...Chapter 17 17 11 F 17 18 2 Click Start F 17 19 3 When the session has ended click OK...
Страница 698: ...Chapter 17 17 16 F 17 28 2 Click Start F 17 29 3 When the session has ended click OK...
Страница 710: ...Chapter 17 17 28 F 17 51 3 Click Start F 17 52 4 Click Save...
Страница 712: ...Chapter 17 17 30 F 17 55 2 Select the data to download F 17 56 3 Click Start...
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Страница 715: ...Chapter 18 Service Tools...
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Страница 717: ...Contents Contents 18 1 Service Tools 18 1 18 1 1 Special Tools 18 1 18 1 2 Oils and Solvents 18 1...
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Страница 721: ...Jan 17 2007...
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