Epson LQ-570e - Main Components; C293 MAIN Board; C293 PSB;PSE Board

EPSON LQ-580 Revision C
O
perating Principles Main Components
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2.1 Main Components
This printer is composed of following main units:
o C293MAIN : Control board
o C293PSB/PSE : Power supply board
o C293PNL : Operation panel board
o M-5T10-100 : Printer mechanism
o Housing : Upper case, Lower case, Rear sheet guide, Knob, Printer cover
2.1.1 C293MAIN Board
The C293MAIN board consists of CPU TMP94C251 (IC7), gate array E05B76NA (IC4),
EEPROM AT93C46 (IC3), PROM (IC8), driver elements, and so on.
Figure 2-1. C293MAIN Component
2.1.2 C293PSB/PSE Board
The C293 PSB/PSE power supply board consists of Transformer, Switching FET,
Regulator IC, Diode bridge, Fuse, Photo-coupler, and so on.
Figure 2-2. C293PSB/PSE Component
Print Head Driver
CPU
Gate Array
E05B76NA
EEPROM
Photo-coupler
CN1
Transformer
Regulator IC
CN2
Switching FET
Fuse