Epson TM-FX2180 Service Manual page 29

EPSON FX-2180 Service Manual
The table below identifies and describes the main components of the
control circuit on the C244 MAIN board.
Table 2-3. Main Components of the Control Circuit
Component IC
Gate array IC1
(E05B50**)
CPU IC2
(TMP96C141BF)
1 Mbit / 4 Mbit IC3
PS-RAM
2 Mbit PROM IC5
Serial EEPROM IC8
(AT93C46)
SLA7024M IC9
A2917SEB IC12
Reset IC IC15
(BH6150F)
Function(s)
System control
Peripheral device control
Receives data from the host
computer and sends it to the input
buffer in RAM
Extends the input data held in the
buffer to create image data
Loads image data to the image data
buffer
Transfers image data to the print
head
Contains the buffer and the working
area
Contains the character tables and the
program that runs the CPU
Contains data including:
Default setting values
Market data
Mechanism and print head
parameters
Driver circuit for the CR motor
Driver circuit for the PF motor
Generates the reset signal at power on
and power down, and resets the CPU
and the gate array
Chapter 2 Operating Principles
2-4