266
ETXDN218A7D (115V), ETXDN218E7D (220V)
Input Filter Circuit
AC line voltage travels to the rectifying circuit through the line filter. The line filter eliminates RFI noise which may otherwise
pass to the AC line from the power supply unit. It also protects the power supply unit from transient noise which may pass into
the unit from the AC line.
Rectifying and Smoothing Circuit
As soon as power is applied to the Power Supply Unit, AC line voltage is rectified by C105 and is smoothed by capacitor C107.
The protection circuit at the time of start-up is controlled by an IC (IC101) and resistors R103 and R110.
Inrush Current Protection Circuit
When the capacitor C105 is not charged by the AC input, an inrush current, or current surge, appears at the input side. Power
thermistor TH101 limits the inrush current.
Converter Circuit
A hybrid IC (IC101), in combination with transformer T1, form a switching power supply circuit using the RCC (Ringing Choke
Converter) system.
Ei
Eo
D201
P --- Primary Winding
S --- Secondary Winding
B --- Control Winding
T101
Q101
P
B
Control Circuit
S
+
Summary of Contents for Panafax DX-2000
Page 2: ......
Page 27: ...27 9 1 Screw 19 10 Release two Latch Hooks 11 Remove the SNS Assembly 121 9 10 11 ...
Page 49: ...49 2 15 Screw Identification Template ...
Page 57: ...57 3 7 3 Option Cassette Circuit 555 748 728 744 928 953 730 731 731 952 944 930 931 931 ...
Page 58: ...58 3 7 4 LAN Control Circuit 522 CN50 1102 1104 1101 N C N C RD N C N C RD TD TD ...
Page 59: ...59 3 7 5 Page Description Language Printer Interface Kit ...