Video Interface Control - Canon CLBR 460ps Service Manual

CHAPTER 2
E. Video Interface Control
1. Outline
To connect the printer to an external device, such as a host computer, a video controller PCB
(interface PCB) must be installed between the printer and the external device.
This section explains the kinds of interface signals exchanged between the printer and the
video controller PCB, and gives information about the sequence of printer operation making use
of interface signals.
External device
(host computer, etc.)
2 - 28
Video controller
PCB
/LSYNC
/RDY
/CPRDY
/SBSY
/CBSY
/SDM
/PRNT
VCLK
/VDOEN
/VDO0
/VDO1
/VDO2
/VDO3
/VDO4
/VDO5
/VDO6
/VDO7
/CCLK
/PPRDY
/TOP
/CCRT
/STS
/CMD
/PFED
/PDLV
Figure 2-2-21
DC controller
PCB
VIDEO signal
(VOUT0-7)
Laser
driver