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Chapter 6
6-3
6.2 Basic Sequence
6.2.1 Basic Sequence of Operations (laser exposure system)
0010-8010
F-6-2
6.3 Various Controls
6.3.1 Controlling the Laser Activation Timing
6.3.1.1 Turning On and Off the Laser Unit
0011-2630
The laser unit is turned on or off by the laser driver PCB 1 in response to the laser control signal (CTL0a/
CTL1a/CTL2a/CTL0b/CTL1b/CTL2b) coming from the DC controller PCB.
F-6-3
Control panel
power switch ON
Copy Start key ON
198
Image lead edge signal (PTOP)
Laser A, B, C, D
INTR
PSTBY
LSTR
STBY
Laser
BD signal (BD)
Laser scanner motor
Half-speed rotation
Wait activation
Imaging activation
for 1 scan
Wait activation
Half-speed
rotation
Detects laser A, C
Activation for potential control
When the surface temperature of the fixing
roller reaches 198 deg C, full-speed rotation.
(for potential control)
Image lead edge in page memory
Half-speed rotation
Laser driver PCB 2
J1301
CNT1a
CNT0a
CNT0b
CNT2a
CNT2b
CNT1b
J1311
Laser driver PCB 1
Video PCB
CNT1a
CNT0a
CNT0b
CNT2a
CNT2b
CNT1b
J1317
J1406
Summary of Contents for IMAGERUNNER 7086
Page 20: ...Chapter 1 Introduction ...
Page 46: ...Chapter 2 Installation ...
Page 88: ...Chapter 3 Basic Operation ...
Page 94: ...Chapter 4 Main Controller ...
Page 116: ...Chapter 5 Original Exposure System ...
Page 165: ...Laser Exposure Chapter 6 ...
Page 175: ...Chapter 7 Image Formation ...
Page 231: ...Chapter 8 Pickup Feeding System ...
Page 287: ...Chapter 9 Fixing System ...
Page 312: ...Chapter 10 External and Controls ...
Page 346: ...Chapter 11 MEAP ...
Page 350: ...Chapter 12 RDS ...
Page 360: ...Chapter 13 Maintenance Inspection ...
Page 375: ...Chapter 14 Standards Adjustments ...
Page 407: ...Chapter 15 Correcting Faulty Images ...
Page 433: ...Chapter 16 Self Diagnosis ...
Page 460: ...Chapter 17 Service Mode ...
Page 559: ...Chapter 18 Upgrading ...
Page 583: ...Chapter 19 Service Tools ...
Page 588: ...APPENDIX ...
Page 615: ......