Controller Board (C314Main) Operating Principles; Specification - Epson AcuLaser Color 2000 Service Manual

EPSON AcuLaser C2000
2.3 Controller Board (C314MAIN) Operating
Principles
The following is the C314MAIN board block diagram.
Figure 2-38. C314MAIN Board Block Diagram
Operating Principles

2.3.1 Specification

Controller Board (C314MAIN) Operating Principles

Table 2-12. Specification
Item Location
CPU IC1 266MHz (outside clock 66.6666MHz) R5000A
• ASIC MR64
E05B51BB IC2 Connected to CPU and controls access to the
memory and peripheral devices.
• ASIC IORB
E05B52AA IC4
Connects MR64 and IOC3.
• ASIC IOC3
Interface I/C
E05B40BA IC5 - Panel
- Timer
- Parallel I/F, Type-B I/F
• New video ASIC VLP1a
- Color laser printer video I/F
- Engine I/F
E05B79BA IC6
- Improve the half tone gradation
- Color conversion
- Zip / unzip function
RAM DIMM S0 JEDEC compliance, 32MB, 64bits, 168pin, SPD
RAM DIMM S1 RAM expansion slot
• Program ROM
CN2
CODE DIMM
Board assembly, memory, C269PROG
(Slot0)
• Expansion font
ROM DIMM CN3, CN4
• EPGL program
IPL/FONT ROM IC15, 16 44 pin SOP package
Serial EEPROM
25128 IC21
- Stores printer setting
DL10019C IC Network control IC
PBUS CN1 (for HDD connection)
• RESET IC
M51953 IC3
Reset this controller.
Serial EEPROM
- Network controller initialization setting
NM93CS56N IC26
- Stores MAC address
- Stores hardware revision
Revision C
Note
92