Canon imageRUNNER 2545 Series Service Manual page 58

2
Technology > Laser Exposure System > Various Controls > Controlling the Laser Activation Timing
[6]
J8143
[1]
BD_SYNCH
RE_A
[2]
[3]
RE_B
[2]
[3]
RE_C
[2]
[3]
RE_D
[2]
[3]
[5]
Main Controller PCB
[1] Synchronous PCB [4] VDO
[2] Delay PCB [5] VDO signal process unit
[3] Line memory [6] Laser driver PCB
BD_SYNCH: BD synchronous signal
RE_A/B/C/D: Readable signal
2 Technology > Laser Exposure System > Various Controls > Controlling the Laser Activation Timing
J8142
[4]
F-2-52
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.
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