Epson EPL-5700 Instructions De Service page 26

EPL-5700L/5700i
Table 2-1. C292 Main Board - Main Controller
Name Location
CPU
IC1
TM95C001
ASIC (SCL)
IC5
E05B68NB
ASIC (TUSB)
IC21
E05B69NA
TTL
IC7
SN74LV162184DGGR
DRAM
IC3
M5M418165CJ-6
ROM
IC2
HN27C4000G-10
RAMSIMM CN1
OPERATING PRINCIPLES
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Functions
16bit CISC-CPU driven at clock frequency
25MHz.
Package: 64pin, QFP
Power supply voltage: 5V Single
This ASIC controls the following:
• Memory (RAM/ROM)
• DMA (Video, I/O)
• RIT (Resolution Improvement Tech.) / PGI
(Photo Grade Improvement) function.
• Video I/F (communication with the Engine
Controller)
• Panel LED
Package: 208 pin, QFP
Power supply voltage: 5V/3.3V
Operation frequency: DMAC max 25MHz
PIF max 25MHz
DCMP max 60MHz
RIT max 100MHz
Controls USB I/F.
Package: 64 pin, QFP
Power supply voltage: 5V/3.3V
Operation frequency: max 48MHz
1284 driver. Receives / sends parallel I/F
signal.
Power supply voltage: 5V
One EDO with 16Mb, 16bit, 60ns is mounted.
Operates as standard memory.
4Mb, 16bit, and 40pin module. Stores the
control program.
72 pin, memory expansion connector
Table 2-1. C292 Main Board - Main Controller (continued)
Name
USB I/F
Parallel I/F
Control Panel I/F
Table 2-2. C292 Main Board - Engine Controller
Name
CPU
M38073E4FS
Motor Drive IC
TEA3718SDP
ELECTRIC CIRCUIT
Location Functions
CH5 USB connector with the host PC
CH2 Parallel connector with the host PC
CN4 LED-control connector
Location Functions
IC201 Controls the engine.
IC204/
Drives the main motor.
IC205
Revision A
24