Video Interface Control - Canon LBP-2000 Service Manual

F. Video Interface Control
1. Outline
The following explains the types of interface signals used between the DC controller circuit and
the video controller circuit, and provides an outline of operation sequence executed using these
interface signals.
a. System block diagram
External device (e.g., host computer)
Video controller PCB
Video interface
signal
(Figure 2-2-15)
DC controller PCB
D input signal
(/BDIN)
BD PCB
Printer
Figure 2-2-14
Video signal
(/VDO, VDO)
Laser unit
CHAPTER 2
2 - 25