EPSON AcuLaser C1900/AcuLaser C900 Revision B
Product Description Controller Unit Specifications 40
1.3  Controller Unit Specifications
1.3.1  Controller Basic Specifications
<AcuLaser C1900>
CPU : SPC603ei 300Mhz
 Enhanced technology : AcuLaser Color Halftoning, 
CRIT/RIT(VIPS + CDMC)
 ROM : 4MB Flash (program) + 4MB MASK (fonts)
 RAM : Standard 32MB
1 GB maximum (Standard 32 MB RAM DIMM must 
be replaced) For RAM expansion, use 168-pin 
SDRAM DIMM compatible with PC100 or PC133 
available commercially.
 NVRAM : 128Kbit (16KB)
 Expansion slot : RAM DIMM 2 slots
(1 slot already used up by Standard RAM) 
ROM DIMM 1 slot (for optional PS)
 Control Panel : 20 digits × 1 LCD, 6 buttons and 3 LEDs
 Interface : 10/100baseTx Ethernet
USB 1.1(2.0 FS 12Mbps Certified)
IEEE1284 parallel (ECP, Nibble, Compatibility), 
B Type connector
Type-B 1 slot (Level 3 supported)
 HDD : Installable as an option, which is common with 
AcuLaser C8600
 Printer Mode : ESC/Page Color mode, ESC/Page(B/W) mode
LJ4, GL/2, ESC/P2, FX, I239X
EJL, PJL, RCC, DIAG mode
Adobe PostScript 3 (Optional)
 Installation Format : Fixed to the printer body
<AcuLaser C900>
CPU : VR4305-48MHz
 Enhanced technology : CPGI (supporting monochrome) installed
CRIT, RIT
 RAM : Standard:16MB, Maximum:144MB
 DIMM Options : SDRAM DIMM dedicated to AcuLaser C1000/
AcuLaser C7000 (the shape of slot is different from PC 
slots) 
16 MB, 32 MB, 64 MB and 128 MB
 Program ROM : 2MB (32bit width)
 EEPROM : 256 byte
 Control Panel : 2 LEDs
 Interface
 Standard
• Parallel : 1ch, IEEE1284 compatible bi-directional, 
B-Type connector, Compatibility, Nibble, ECP
• USB1.1 : 1ch
 Options : Type-B 1 slot (compatible with Level-2) 
However, currently only Leo2.1 is supported.
 Printer Mode : ESC/PageS Printing System