Chapter 6
6-4
F-6-4
Related Service Mode:
- COPIER > ADJUST > LASER > PVE-OFST (laser projection position adjustment)
If you have replaced the DC controller PCB or initialized the RAM on the DC controller PCB, enter the adjustment value.
Setting range: -300 to 300
Note that the laser B move in sync with the laser A.
The laser D move in sync with the laser C.
6.3.2 Controlling the Intensity of Laser Light
6.3.2.1 APC Control
0010-8029
iR7105 / iR7095 / iR7086
The machine uses APC control to make sure that the intensity of laser light remains at a specific level by controlling the output of the laser diode of the laser driver.
For the control, the machine causes the Video controller to send the laser control signal (CTL0a, CTL1a, CTL2a, CTL0b, CTL1b, CTL2b) to the laser drive IC on
the laser driver PCB. As a result, the laser drive IC is set to APC mode, thus forcing the laser diode (LD) to emit light. While the control is under, way, the laser
driver IC uses the photo diode (PD) to monitor the laser diode (LD), adjusting the output of the laser diode until a specific level of intensity is reached.
F-6-5
SERVICE MODE:
COPIER > FUNCTION > LASER > POWER-A, B, C, D (activation for laser power adjustment)
Use this mode to turn on the laser when checking laser activation.
BD PCB
Laser driver
PCB 2
BD
J3701
J1319
J1406
J1317
J1317
J1312
J1313
J1302
J1303
J1406
GND
5V
VIDEO
BD
4
3
2
1
36
6
7
8
Laser driver
PCB 1
Video signal PCB
Sync
signal
generation
Memory
control
36
When laser light
is detected, '0'.
Generates the printer
sync signal based on
CLK-B.
Executes read operation based
on this sync signal.
Front
Setting decreased
Setting increased
Rear
Laser A, C
Laser driver PCB 1
5V
Laser driver IC
PD
LD
Laser driver PCB 2
CNT1a
CNT0a
CNT0b
CNT2a
CNT2b
CNT1b
J1311
Video PCB
CNT1a
CNT0a
CNT0b
CNT2a
CNT2b
CNT1b
J1317
J1406
J1301
Summary of Contents for iR7086
Page 1: ...Sep 7 2007 Service Manual iR7105 7095 7086 Series...
Page 2: ......
Page 6: ......
Page 26: ...Contents...
Page 27: ...Chapter 1 Introduction...
Page 28: ......
Page 30: ......
Page 32: ...Chapter 1 1 2 Not all products are necessarily available in all sales areas...
Page 55: ...Chapter 2 Installation...
Page 56: ......
Page 150: ......
Page 151: ...Chapter 3 Basic Operation...
Page 152: ......
Page 154: ......
Page 159: ...Chapter 4 Main Controller...
Page 160: ......
Page 162: ......
Page 183: ...Chapter 5 Original Exposure System...
Page 184: ......
Page 228: ......
Page 229: ...Chapter 6 Laser Exposure...
Page 230: ......
Page 232: ......
Page 238: ...Chapter 6 6 6 F 6 7 1 Laser light 2 Laser shutter 1 2 1 2 2 1...
Page 240: ......
Page 241: ...Chapter 7 Image Formation...
Page 242: ......
Page 246: ......
Page 294: ......
Page 295: ...Chapter 8 Pickup Feeding System...
Page 296: ......
Page 300: ......
Page 353: ...Chapter 9 Fixing System...
Page 354: ......
Page 378: ......
Page 379: ...Chapter 10 External and Controls...
Page 380: ......
Page 384: ......
Page 394: ...Chapter 10 10 10 F 10 7...
Page 417: ...Chapter 11 MEAP...
Page 418: ......
Page 420: ......
Page 466: ......
Page 467: ...Chapter 12 RDS...
Page 468: ......
Page 470: ......
Page 479: ...Chapter 13 Maintenance and Inspection...
Page 480: ......
Page 482: ......
Page 496: ......
Page 497: ...Chapter 14 Standards and Adjustments...
Page 498: ......
Page 526: ......
Page 527: ...Chapter 15 Correcting Faulty Images...
Page 528: ......
Page 530: ......
Page 560: ......
Page 561: ...Chapter 16 Self Diagnosis...
Page 562: ......
Page 564: ......
Page 584: ......
Page 585: ...Chapter 17 Service Mode...
Page 586: ......
Page 588: ...Contents 17 8 1 1 COPIER Items 17 94...
Page 688: ......
Page 689: ...Chapter 18 Upgrading...
Page 690: ......
Page 692: ......
Page 696: ...Chapter 18 18 4...
Page 713: ...Chapter 18 18 22 formatting and download the system software once again...
Page 726: ...Chapter 19 Service Tools...
Page 727: ......
Page 729: ......
Page 733: ......
Page 734: ...Sep 7 2007...
Page 735: ......