H/W Structure And Descriptions - Samsung ML-1640 Service Manual

2.2.2 H/W Structure and Descriptions

2.2.2.1 H/W Overview
ML-1640/2240 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 and built-in Flash memory with 4Mbits
capacity.
SMPS
HVPS
2.2.2.1(a) Main Control
ML-1640/2240 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.
2.2.2.1(b) CPU
Use 32Bit RISC Processor of Jupiter4e, and control system by operating Operation Block of the System
Program inside Flash Memory.
Service Manual
Product spec and feature
OPE B'D
(Build-in HVPS)
Main Controller
Jupiter IV ASIC
DRAM 8M Byte
Flash Memory
0.5M Byte
2-12
V1.1 USB
Printer
Engine
B'D
LSU
Motor
Samsung Electronics