Chapter 6
6-5
6.3.1.2 Main Scanning Synchronous Control
0019-4285
iR3225 / iR3225N / iR3235 / iR3235N / iR3245 / iR3245N
Main scanning synchronous control is operated at synchronous PCB based on BD synchronous signal.
Based on BD signal that is formed from A laser light detected by BD PCB, BD synchronous signal for each laser is formed inside image PCB.
Image data written in the line memory is read out by the readable signal (RE_A, RE_B, RE_C, RE_D) according to the 4 phase differences formed inside the delay
PCB based on the BD synchronous signal (BD_SYNCH) and is sent to the laser driver.
F-6-5
[1] Synchronous PCB
[2] Delay PCB
[3] Line memory
[4] VDO
[5] VDO signal process unit
[6] Laser driver PCB
BD_SYNCH: BD synchronous signal
RE_A/B/C/D: Readable signal
6.3.2 Controlling the Intensity of Laser Light
6.3.2.1 APC Control
0019-4286
iR3225 / iR3225N / iR3235 / iR3235N / iR3245 / iR3245N
The machine monitors the laser light that is emitted to the built-in photo diode of laser diode and adjusts the laser to appropriate intensity.
MEMO: Regarding BD signal formation
Not B laser but A laser only reaches BD sensor on BD PCB. BD signal is formed based on A laser light.
J462
J461
Main controller
PCB
Image PCB
BD signal
BD_SYNCH
[6]
[3]
RE_A
[2]
[3]
RE_B
[2]
[3]
RE_C
[2]
[3]
RE_D
[2]
[5]
[4]
J463
J2005
[1]
Содержание iR3245
Страница 1: ...Jul 3 2008 Service Manual iR3245 3235 3230 3225 Series...
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Страница 25: ...Chapter 1 Introduction...
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Страница 65: ...Chapter 2 Installation...
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Страница 121: ...Chapter 3 Basic Operation...
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Страница 129: ...Chapter 4 Main Controller...
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Страница 134: ...Chapter 4 4 2 F 4 1 1 5 8 9 11 14 12 3 4 10 2 13 7 15 16 17...
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Страница 153: ...Chapter 5 Original Exposure System...
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Страница 185: ...Chapter 6 Laser Exposure...
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Страница 197: ...Chapter 7 Image Formation...
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Страница 227: ...Chapter 8 Pickup Feeding System...
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Страница 244: ...Chapter 8 8 12 For iR3245 3235 3230 F 8 14 1 2 3 4...
Страница 261: ...Chapter 8 8 29 10 11 12 13 14 3 1 2 4 5 4 4 1 2 3 5 4 1 2 3 5 5 4 1 2 3 5 4 1 2 3 5...
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Страница 279: ...Chapter 9 Fixing System...
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Страница 297: ...Chapter 10 External and Controls...
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Страница 315: ...Chapter 10 10 13 2 Uncheck SNMP Status Enabled F 10 11...
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Страница 343: ...Chapter 11 MEAP...
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Страница 397: ...Chapter 12 e maintenance imageWARE Remote...
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Страница 409: ...Chapter 13 Maintenance and Inspection...
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Страница 424: ...Chapter 13 13 12...
Страница 425: ...Chapter 14 Standards and Adjustments...
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Страница 433: ...Chapter 14 14 5 Execute the following in Service Mode ADF white level adjustment COPIER FUNCTION CCD DF WLVL1 2 3 4...
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Страница 437: ...Chapter 15 Correcting Faulty Images...
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Страница 465: ...Chapter 16 Self Diagnosis...
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Страница 493: ...Chapter 17 Service Mode...
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Страница 691: ...Chapter 18 Upgrading...
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Страница 738: ...Chapter 18 18 44...
Страница 739: ...Chapter 19 Service Tools...
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Страница 741: ...Contents Contents 19 1 Service Tools 19 1 19 1 1 Special Tools 19 1 19 1 2 Oils and Solvents 19 1...
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Страница 745: ...Jul 3 2008...
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