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COPYRIGHT © 1999 CANON INC. CANON GP160 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 2 BASIC OPERATION
2-3
II. ELECTRICAL CIRCUIT OVERVIEW
The main electrical control of the unit is performed by the IC on the image processor
PCB and the IC on the DC controller PCB.
Furthermore, the unit is equipped with 2 backup lithium batteries on the image
processor PCB.
The function of each PCB is listed below.
• Image processor PCB
Table 2-201
• DC controller PCB
Table 2-202
IC No.
IC26 (CPU)
IC15
IC28
IC29
IC38
IC41
ICI, IC2 (on ROM DIMM)
IC7, IC8, IC9, IC10
IC36, IC37
Function overview
• Sequence control
• Serial I/F control
• Timer control
• Interrupt control
• DRAM control
• Control panel and transmission control
• DMA control
• DC controller PCB and transmission control
• ADF motor control
• Control panel display control
• Image processing control (shading control)
• Analogue processor PCB transmission control
• Image processing control (half tone processing, binarisation pro-
cessing)
• Image reduction and enlargement
• Control program built-in flash ROM)
• Image data storage DRAM
• Storage SRAM for service mode, user mode, and other
parameters
IC No.
IC301 (CPU)
Function overview
• Print operation program built-in
• Print process control
• Motor, clutch sensor, etc., load control
• High voltage output control
• Cassette feeder operation control
• Jam detection
• Laser scanner drive control
Содержание GP160
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