Epson FX-870 Service Manual

a
Filter Circuit
AC input
Principles of Operation
Secondary
- I
I
I
Full Wave
Pectification - Smoothing - $M$ing
Smoothing
Circuit
Circuit
. .
i
I
Circuit
I
I ,
t
+5v
Switching
Regulator
.~~~-~~~~~-~~~~~
+5v
Over Current
Control Circuit
----------------
+5v
_ Photo- +
+35 V Line
coupler
Detector Circuit
\
I
ZD51
+t
+35 V Line
Voltage Overload
Protection Circuit
2052
I+
J
-9 +35 VDC
4 +5 VDC
L
- Voltage Drop
Protection Circuit
Power
- Switch
Figure 6-22. Power Supply Circuit Block Diagram
-
Epson FX-870/1170
6-21

Epson FX-870 Specifications

General

Brand	Epson
Model	FX-870
Category	Printer
Language	English