Epson EPL-N1200 Service Manual - Page 75
Power Supply Circuit Block Diagram
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Operating Principles EPL-N1200 Service Manual 2.1.2.6 Power Supply Circuit Function and Safety Protection The printer's power supply board (PU1) supplies the +5 VDC and +24 VDC. The +24 VDC is used as the bias voltage supply, main motor (M1) drive, scanner mirror motor (M2) drive, fan motor (M3) drive, and solenoid drive. For safety protection, the +24 VDC line is cut when the interlock switch (cover open switch) is off. Interlock SW +24 VDC AC IN Power Supply Board (PU1) GND2 +5 VDC GND1 Figure 2-25. Power Supply Circuit Block Diagram 2-16 Rev. A
2.1.2.6
Power Supply Circuit Function and Safety Protection
The printer’s power supply board (PU1) supplies the +5 VDC and +24 VDC. The +24 VDC is used
as the bias voltage supply, main motor (M1) drive, scanner mirror motor (M2) drive, fan motor (M3)
drive, and solenoid drive.
For safety protection, the +24 VDC line is cut when the interlock switch
(cover open switch) is off.
AC IN
Interlock
SW
+24 VDC
GND2
GND1
+5 VDC
Power Supply Board
(PU1)
Figure 2-25.
Power Supply Circuit Block Diagram
Operating Principles
EPL-N1200 Service Manual
2-16
Rev. A