Epson EPL-5700 Service Manual page 49

EPL-5700
Main composition elements and functions of C234 Main-B board are
following.
Table 2-8. Main elements of main controller in C234 Main-B board
Name Location
CPU IC1
PD30200GD
ASIC IC4
E05B41BA
ASIC IC10
E05B41BA
ASIC IC16
E05B28KA
Program CN3
ROM/Mask
ROM
DRAM IC14/15
Mask ROM IC5/6
EEPROM IC9
NM93C86A
Option Font CN2
ROM
Rev. A
Function
RISC-CPU
This ASIC controls following;
Memory control(RAM/ROM)
DMA control (Video, I/O)
This ASIC controls following;
Host I/F control
Control panel
Interruption control
This ASIC controls following;
RIT(Resolution Improvement
Tech.)/PGI(Photo Grade Improvement)
function control
Video I/F control(communication with
engine controller)
DIMM module which stores control
program. Flash-ROM(C215PROG) is built
in the initially mass produced printers.
Mask ROM(C215PROGB) is built in later
mass produced printers.
2 16Mbit(x16)s are mounted and operates
as standard memory.
2 8Mbit(x16)s are mounted and stores
font data.
Memorizes each setting information and
status information with 16Kbit(x16)
capacity.
Stores optional font in 4MB ROM DIMM.
Table 2-9. Main elements of main controller in C234 Main-B board
Name Location
CPU IC201
M38073E4FS
Motor Drive IC IC204/205
TEA3718SDP
Chapter2 Operating Principles
Function
Engine control
Main motor driving
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