Power Supply Circuit Functions And Safety Protection - Epson ActionLaser 1300 EPL-3000 Service Manual

2.1.2.8 Power Supply Circuit Functions and Safety Protection

The printer's power supply board (PWB-E) supplies +5 VDC and +12 VDC. The +12 VDC is used
as the bias voltage supply, main motor (Ml) drive, scanner mirror motor (M2) drive, fan motor
(M3) drive, and solenoid drive. For safety protection, the +12 VDC line is cut when the interlock
switch (case-open switch) is off.
AC IN ---+
Figure 2-30. Power Supply Circuit Block Diagram
Rev. A
Power Supply Board
Inter Lock
Sw
2-19