Basic Sequence - Canon iR4570 Series Service Manual

Chapter 6

6.2 Basic Sequence

6.2.1 Basic Sequence

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iR2270 / iR2870 / iR3570 / iR4570
When the control panel power switch is turned on, the laser scanner starts to rotate; when the motor rotation reaches
its target revolution, the machine turns on the laser unit. Thereafter, when the Start key is turned on, the machine
generates the image request signal (PVREQ) on the printer side, and turns on the laser beam with reference to the
generated signal.
A4, 1 Copy
STBY INTR PRINT STBY
PVREQ
Laser A
BD
BD detention/APC control ON
BD detection/APC control ON
APC control ON
F-6-4
6-6