Samsung SF-530 Service Manual page 91

3
3. Circuit Description
3-1 Main PBA
3-1-1 Summary
The main circuit that consists of CPU, MFP controller including various I/O device drivers, system memory, scanner, print-
er, motor driver, PC I/F, and FAX transceiver controls the whole system. The entire structure of the main circuit is as follows:
Parallel
Interface
Video Data
Controller
UART/
Serial I/O
Control
PWM &
Gen. Timer
Samsung Electronics
I/O Ports
Controller
Scan Image &
Scan Motor
Controller
Ink Head
Controller
DMA
Controller
Port
LSU
System Manager
System Bus Controller
Bus Interface
PLL & Clock
Save
Bus Router
Interrupt
Controller
A/D
Converter
Derasterizer
Carrier Motor
Control
Position &
Fire Control
Paper Motor
Control
Real Time
Clock
Watch Dog
Timer
Bus Arbitration
ROM/SRAM/DRAM Controller
CIRCUIT DESCRIPTION
CPU
(ARM7TDMI)
LBUS
I/D Cache
(2-KB)
Repair Manual
3-1