Epson TM-L90 series - Main Circuit Board Unit

Appendix F-2 Overview of Electric Circuits Rev.B
Confidential
Main Circuit Board Unit
The main circuit board unit is comprised of circuits used to control the CPU, memory,
mechanism drive unit, detectors, and power supply. It forms the nucleus of the control system
for the TM-L90.
Program
ROM
Font ROM
DRAM
CPU