Overview; Outline Of Operation By Block - Canon 3370 Series Service Manual

Chapter 2

2.7.1.3 Overview

LBP3370
The video controller receives print information from external devices (e.g., host computer) through interface cables.
Such print information contains commands used to exchange printer status and unique information as well as PDL data.
The PDL data is converted into a display list by the display list generation circuit, and turned into bitmap data for output to the DC controller. A check may be made
on the printer status using an external device.

2.7.1.4 Outline of Operation by Block

LBP3370
2-20
1 J2 7
1
IC1
J6
IC3
13
1
J1
6
J5
26 1
PCL printer
driver
DC controller PCB
ROM(IC16)
SDRAM
(IC1,2,3,4)
No. Name
IC2
F-2-24
PDL data
Video controller PCB
Bitmap
Compression/
Bitmap
decompression
circuit
F-2-25
USB
I/F(IC1100)
ASIC (IC1009)
EEPROM(IC9) CPU(IC1010)
F-2-26
T-2-3
Description
2
IC4
J7
1
28
J4
1
J3
1 5
Display list
generation
circui
Display List
Bit map conversion
0018-3146
0018-3147