Epson AcuLaser C900 - Page 119

EPSON AcuLaser C1900/AcuLaser C900 Revision B
Operating Principles Controller Board Operating Principles 119
CONSTITUTION OF MAIN CONTROL CIRCUIT BOARD
 Main Board Assy: C485 MAIN
 Memory Board Assy: C309 PROG (IPL, Code, Font)
SPECIFICATIONS
Table 2-16. Major Elements
Name Location Remarks
CPU IC102 SPC603ei-300
ASIC CDMC
IC101
E05B92NA
ASIC which is connected to CPU and controls access
to memory and peripheral devices
VIPS
IC603
E05B93BA
Video control ASIC which enhances halftoning
characteristics of color laser printer
DIOC
IC402
E05B72BA
ASIC equipped with the basic interfaces necessary to
printer
SSCG IC501 Clock driver
ROM
DIMM
Standard CN300 1 slot. IPL/Code/Font
Optional CN301 1 slot.
EEPROM
IC401
128kbit
Hardware control
SDRAM
DIMM
Standard/
optional CN200
For standard/optional printer memory (1 slot) 168-pin.
32, 64, 128, 256, 512 MB
(Standard: 32MB)
Optional
CN201
For optional printer memory (1 slot)
168-pin. 32, 64, 128, 256, 512 MB (Max. 1GB)
PWM IC602 IC for pulse width modulation for connection to VIPS
Control Panel
CN405
Connector for the newly employed Control Panel.
controlled by DIOC.
VIDEO I/F CN600 Connected to the video I/F of NC-L6001 (Minolta).
Standard
I/F
Parallel I/F
CN403
This controller is equipped with 1 channel of Parallel
I/F. Parallel I/F is controlled by DIOC.Connected to
the video I/F of.NC-L6001 (Minolta).
USB I/F CN402 1 slot. USB 1.1
Expansion
I/F
Type-B CN406 1 slot. Connected to the HV bus of DIOC.
IDE
CN408
For hard disk (option). Connected to the HV bus of
DIOC. Compatible with EPL-N2120.
Network
I/F
CN701
Connector for Network board. Connected to the HV
bus of DIOC.
Table 2-16. Major Elements (continued)
Name Location Remarks