Main Components; Main Control Board (C137 Main Board); Figure 1-9. C137 Main Board Component Layout - Epson 4003353 Service Manual

Product Descriptkm

1.5 MAIN COMPONENTS

The main components of the Stylus Color are:

1.5.1 Main Control Board (C137 MAIN Board)

The Main Control Board (C137 MAIN Board) consists of an H8/3003 l~bit CPU, E05A% gate
array, a program ROM (4M), a dynamic RAM (4M), a mask ROM (4M or 8M), an EEP-ROM (lK),
and a lithium battery for powering the protect counters. The reset IC (M51955 and ~ 592) is
equipped with both a logic system and a power system. The 8M program ROM is used only fix the
. . . . . . . . .

Figure 1-9. C137 MAIN Board Component Layout

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