C228 Main Board - Epson Stylus Pro 5000 Service Manual

Stylus Pro5000 Chapter2 Operating Principles

2.1.2.3 C228 Main Board

In the C228 Main board, mainly, memory control
(Flash/DRAM/SRAM/PDRAM), taking CPU as its center, optional SIM
control and Bus control are performed, and this board plays the major role
for the whole circuit.
Also, this board plays role of sending or receiving information between
interfaces(Parallel/Type-B/Mac.) and various exterior parts. Figure below
shows block diagram for C228 main board.
Figure 2-31. C228 Main Board Block
Rev.A 2-27