Overview Of The Block - Canon LBP7200Cdn Service Manual

GDI (graphics device interface)
It is a graphical interface used in a Windows environment for printing and screen display (also for the application being in use).

2.8.2.2 Overview of the Block

NIC I/F
Connector
J2
USB
Connector
J1
No.
IC1 ASIC
IC3 CPU
IC5 CPU
IC6 ASIC
IC7 SDRAM
IC11 Flash ROM
IC12 SDRAM
IC2S NVRAM
GDI data transmission
from application
Analyzes GDI data for
generation of print data
Forms bit images
Engine
Print
16MB
TRANSCEIVER
SDRAM
IC
(IC7)
8MB
2MB
CPU
Flash ROM
SDRAM
(IC5)
(IC11)
(IC12)
NW I/F
MEMC
USB2.0
ASIC (IC6)
Name
Canon Advanced Printing Technology
Displays on screen
Monitors printer status
Host computer interface
Printer interface
Print status information
F-2-22
T-2-8
4Kbit
NVRAM
(IC2S)
Control
CPU
system
(IC3)
Control
system
S
P
L W
I M
M
ASIC (IC1)
F-2-23
T-2-9
handle the image data
Controls the board.
Control the network
Serves as an IC for USB device controller, memory controller, main controller, and NIC
interface controller.
Retains image data.
Network system order firmware storage
Retains image data.
Serves to retain image data.
Host computer
Printer
DC
controller
PCB
Video(K)
Video(C)
Video(Y)
Video(M)
J6
Description
Chapter 2
0021-4106
2-19