Circuit Overview; Overview Of Power Supply Circuit - Epson LQ-510 Technical Manual

PRINCIPLES OF OPERATION

2.1.3 Circuit Overview

This section describes the circuitry.
2.1.3.1 Overview of the Power Supply Circuit
The power circuit for this system is an SANPS(E) board. The circuit converts the AC power source to the
+ 24, + 5, and ± 12 VDC that the unit requires.
AC IN
(12OVAC or
220/240VAC)
Voltage
+24 V
±12 v
NOTE: The voltage Vx is generated on the SAMA board using the + 5 V power supply.
2-10
SANPS (120V Ver)
SANPSE (220/24OV Ver)
Figure 2-14. Overview of Power Supply Circuit Operation
Table 2-2. Power Supply Applications
+ 5 v Logic circuit
Paper-feed motor holding voltage, etc.
Carriage motor drive voltage
Paper-feed motor drive voltage
Printhead drive voltage
Optional I/F voltage
VX Reset circuit
Printhead data signal pull-up voltage
Paper-feed motor phase data signal pull-up voltage
To SAMA Board
Application
REV.-A
LQ-510