Epson DFX-8500 service manual Main Control Board C204 Main Board, Ram, ADM232L, Reset IC

GENERAL DESCRIPTION

1.5.2 Main Control Board (C204 MAIN Board)

The C204 MAIN board is a main controller board. The board contains following ICs:

‰￿	16-bit CPU:	TMP95C051A; 24.57 MHz (IC2)
‰￿	Gate array:	E05B36 (IC1)
‰￿	PROM (including C.G.) :	2M-bit (IC5)
‰￿	RAM	4M-bit (IC14)
‰￿	ADM232L	RS-232C level converter (IC9)
‰￿	RESET IC	PST391D(IC13)
‰￿	EEPROM	93C66 (IC11)

There are two types of C204 MAIN board used as after service parts. The following Table shows differences between them.

Figure 1-26. C204 MAIN Board

Table 1-24. Color Attribute

	For USA and Pacific	For Europe
Serial I/F Hexagonal-head screw type	Inch	Metric

Rev. B 1-39