Canon GP215 Service Manual page 206

3. OPERATIONS AND TIMING
b. Protocol Controller PCB
In terms of PDL units, the Printer Board that may be installed to the machine may be a PS-PCL Board,
PCL5e Board, or PS (kanji) Board. Of them, the three boards may be used in common with the Multi
Device Controller, requiring conversion of printing commands (printer commands) and operation
sequences to suit the operating environment of the GP215/GP200.
The Protocol Controller PCB converts printer commands from a personal computer to control the print-
er system of the GP215/GP200 to support GP215/GP200-specific multiple cassette functions not found in
a configuration consisting of a Multi Device Controller and a GP55/GP30F.
CPU
Image processing
circuit
Image processor
PCB
3–152
COPYRIGHT © 1996 CANON INC.
ROM
CORE/IP
Protocol controller PCB
Board
CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
Network Interface Board
CPU
DP
RAM
Command
CPU
conversion circuit
Memory
LAN
controller
Printer Board
DP
RAM
CPU
Video
controller
I/F
Controller