Epson 200 - Manual (Page 29)

2.1 OVERVIEW
Since the printer mechanism of the EPSON Stylus COLOR 200 is the same as for the EPSON Stylus COLOR
IIs, this section only describes the differences in electrical circuitry.
2.1.1 C199 MAIN BOARD
The main control board for the EPSON Stylus COLOR 200 is the C199 MAIN board. The major
difference between the electrical circuitry of the C199 MAIN board and C160 MAIN board (used in the
EPSON Stylus COLOR IIs) is that the new board incorporates a new CR drive circuit. The figure
below shows a block diagram of the C199 MAIN board circuitry.
CPU
M37721S2BFP
(IC2)
G/A
E05B32KB
(IC1)
PROM (2-8M)
(IC3)
PSRAM (1M)
(IC4)
PSRAM (256K)
(IC5)
MROM (16M)
(IC6)
MROM (16M)
(IC7)
UDN2917EB
(IC8)
A2919
(IC16)
CR motor driver
PF motor driver
Panel switch
Panel LED
EEPROM
(IC10)
Address/Data Bus
Address Bus
Data Bus
Parallel I/F
(IEEE-1284)
Head
(Data, Driver)
Memory control lines
Figure 2-1. C199 MAIN Board Block Diagram
EPSON Stylus COLOR 200 / EPSON Stylus 200 Operating Principles
Rev. A 2-1