Main Control Board (Cl 17 Main Board Assembly); Figure 1-28. C117 Main Board Assembly - Epson C117001-N - DFX 5000+ B/W Dot-matrix Printer Service Manual

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1.6.2 Main Control Board (C117 MAIN Board Assembly)
The C117 MAIN board assembly cxmsists ofi a TA4P96C14 8-bit CPU, an E05A87 gate array, a
PROM (2 megabit including the CG ROM), a PS-RAM (256K), an EEPROM, an SLA7026M for the
paper feed motor, an SLA5007 for the CR motor, each driver's IC, and the parallel and serial
interface control circuits.
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1.6.3 Power Supply Circuit (C117 PSB/PSE Board Assembly)
The C117 PSB/PSE tmrd assembly power supply circuit supplies the control circuit and printer
mechanism drive circuit with
lower case constant and cools the CR motor. The printer contains one of two power supply boards;
see Table 2-1 for irhrrnation on the input voltage and fuse ratings of your printer's board.
Figure 1-29. C117 PSWPSE Board Assembly
1-28
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fan motor on this board keeps the temperature in the
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Manual
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