REV.-A
1.11.2 PEGX Board (Main Board)
The
PEGX
board is the main board, and interfaces the printer to the host computer, controls the printer
mechanism and control panel, and supplies DC voltage. Since the complicated logic circuit section is
implemented using gate arrays, the
PEGX
board features very compact construction.
Driver circuits for the motors, sensors, and
printhead are also included on this board. Other main
ICS
on the
PEGX
board are:
Universal
IC
●
●
Gate
●
●
STK6722HZ (IC2A)......... . . . . . . . . . . . . . . . . . . . .
.
NJM2355 (lCIA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Array
E05A15HA (IC3A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
E05A16GA (IC7A)......... . . . . . . . . . . . . . . . . . . . . . . .
Memory
IC
●
EP-ROM
(IC4A)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
●
S-RAM (IC5A and 6A).. . . . . . . . . . . . . . . . . . . . . . . . .
Carriage Motor Driver
Switching Regulator
IC
Paper Feed and Carriage
and
Printhead
driver
Host computer interface
Program ROM, 256 K-bit
Motors controller,
Buffer and Back up memory
S-RAM (8 KBX2)
GA (E05A15HA)
%&h
~~
Lithium Battery
DIP
SW2
DIP
SW1
CPU (PPD7810HG)
GA(E05A16GA)
Figure 1-14.
PEGX
Board
1-27
To Next Page
Loading...
