Head Drive Gate Array Transistor Eaya

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Figure 1-12. BOARD ASSEMBLY,C094 MAIN (Main Control Circuit Board)

1.6.2 BOARD ASSEMBLY, C094PNL (Control Panel Circuit Board)

This board functions as the control panel of the FX-870/1 170, and consists of a power switch, three function switches, and three indicator LEDs.

Power Epson 870
Figure 1-13. BOARD ASSEMBLY, C094 PNL (Control Panel Circuit Board)

1.6.3 BOARD ASSEMBLY, C076 PSB/PSE (Power Supply Circuit Board)

This board is composed of an input filter circuit, a transforming circuit, a switching regulator circuit, a rectifying circuit, a smoothing circuit, and various protecting circuits.

Power Epson 870

1.6.4 Printer Mechanism

The printer mechanism consists of a 9-pin impact dot head, a carriage mechanism, a carriage motor, a paPer feed mechanism, a paper feed motor, a ribbon feed mechanism, and various sensors.

The printer mechanism consists of a 9-pin impact dot head, a carriage mechanism, a carriage motor, a paPer feed mechanism, a paper feed motor, a ribbon feed mechanism, and various sensors.

Mechanisms For Paper Feeding Printer
Figure 1-15. Printer Mechanism

1.6.5 Housing Assembly

The printer mechanism and all the boards are contained in a housing assembly that consists of the uppercase and the lower case.

Printer Cover

Upper Case

Lower

Front Cover

Printer Cover

Upper Case

Lower

Front Cover

Figure 1-16. Housing Assembly

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  • Anselma
    What is the function of transistor in Epson printer?
    2 years ago

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