Filter Circuit; Transformer - Epson L-1000 Technical Manual

PRINCIPLES OF OPERATION

2.2.1.3 Filter Circuit

The AC line voltage passes through the power switch, then is input to the filter circuit. A fuse, F1, is used on
the PEBFIL board. The filter circuit attenuates external noise and inhibits noise generated in the printer from
going out via the AC line. Either Cl or C2 drains leakage current between the primary coil and the case. Figure
2-12 shows the filter circuit.

2.2.1.4 Transformer

AC voltages (120 VAC, 220 VAC, 240 VAC) that pass through the filter circuit are divided into 26 VAC and
12 VAC and supplied to the PBMA circuit. Figure 2-13 shows a schematic drawing of the power transformer.
2-12
Figure 2-12. PEBFIL Filter Circuit Board
Figure 2-13. Transformer Circuit
REV.-A
LQ-500/ L-1000