Epson ActionLaser 1600 EPL-5600 Service Manual page 46

General Description
1.5.1 C125 MAIN Board
The C125 MAIN board is a video controller board. The primary functions of this board are
receiving print data from the host, generating the print image (video), and sending the print image
to the engine controller via the video interface. A 32-bit 17.6 MHz RISC CPU MB86930 (SPARKlite)
(location: IC1) is used, and the following memory chips and custom ICS are
memory space.
Memory chips
Code ROM: four 4M-bit EP-ROM (IC7, 8,15, 18) or two 8M-bit mask ROM (IC21, 22)
Font ROM: two 8M-bit mask ROM (M80A74: IC4, M80A75: IC5)
Custom ICS
Others
Reset IC M51953BFP (IC27)
4
(1
Lo
Language
ROM
(option)
4M DRAM (IC20, 17,19, 16)
There are two types of C125 MAIN boards used as after service parts. The following table shows
differences between them.
Table 1-17. Differences in Components for the C125 MAIN Board
Serial interface connector
17,19, 20)
8M ROM
/
Figure 1-17. C125 Main Board
Mini screw type connector
8M ROM M80A75
(lCl)
ActionLaser 1S00
Inch screw type connector
None
assigned to the 4
ADM232
Rev. A