Epson AcuLaser C1900 Service Manual page 119

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