Epson LQ 1050 - B/W Dot-matrix Printer - Circuit Operation; Information; Power Supply Section

REV.-A
2.3 CIRCUIT OPERATION
The main circuits of the printer are on the PEGX board, the control panel, the PEBFIL-11 board, and the
power transformer.
2.3.1 General Information
The
PEGX board includes the various circuits that supply DC voltage, control all of the printer operations
and the control panel, and process data from the host computer.
2.3.1.1 Power Supply Section
Figure 2-8 shows a block diagram of the power supply section.
WVU (+36VDC)
1-[ Filter sten-
;~gulator
I-F
I
Y
+24
egulator
ircuit
H
Half-wave
rectifier
and
Smooth in
Circuit
$’2.
---
... -
;
9
Vx Voltage
V;lta
Circuit
Figure 2-8. Power Supply Block Diagram
2-10