Xerox 3117 - Phaser B/W Laser Printer, Руководство по обслуживанию

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System Overview
x
Service Manual
3-7
3.2 H/W Structure and Descriptions
3.2.1 H/W Overview
Phaser 3117 is roughly made up Main Control part and SMPS/HVPS part.
Main Controller uses Jupiter4E for its ASIC, which is on chip micro controller and developed for Low-end Laser
Beam Printer.
Jupter4E provides the integrated printing functions such as Printer video controller, Laser Scan Unit controller,
PWM controller and Bi-polar Stepper Motor Controller and has USB interface
3.2.1.1. Main Control
Phaser 3117 of Main Control are composed of CPU and Print and operate follows function by CPU
- Bus Control, I/o
- Handling, each Driver and PC Interface
Main Control operate its full function on the Main B'd and CPU control Controller ASIC and build-in
Memory.
3.2.1.2 CPU
Use 32Bit RISC Processor of Jupiter4e, and control system by operating Operation Block of the System
Program inside Flash Memory.
SMPS
HVPS
Jupiter IV ASIC V1.1 USB
Printer
Engine
B’D
DRAM
8
M Byte
OPE B’D
(Build-in HVPS)
Main Controller
LSU
Motor