Epson AcuLaser C900 - Page 120

EPSON AcuLaser C1900/AcuLaser C900 Revision B
Operating Principles Controller Board Operating Principles 120
<AcuLaser C900>
PRINCIPAL FEATURES
 Host-based printer controller using ESC/PageS-Printing System as the
language
 Engine specifications: A4, 4 ppm for color / 16 ppm for monochrome, 600
dpi, duplex printing available as an option
 NEC-made VR4305 employed as the CPU
 HTC employed as the new memory + I/O + image processing integrated ASIC
 16 MB of RAM as standard. A maximum of 144 MB available with optional
RAM
 Parallel interface (Compatibility/Nibble/ECP) and USB 1.1 interface mounted
as standard
 1 channel of Type B slot for an optional interface
(Only Leo2 supported)
 Network by Type-B
 Color image processing functions (CPGI and CRIT) incorporated
 48 MHz bus frequency
The following is the C494MAIN board block diagram.
Figure 2-32. C494MAIN Board Block Diagram (AcuLaser C900)