Epson 680Pro - LQ B/W Dot-matrix Printer Service Manual page 78

EPSON Stylus COLOR 680/777/777i
Check the Earth terminal and wire position. Refer to the following
figure. The earth wire for 120V must be placed back side of the
Heat sinker HT1. Be sure to leave at least 2.5 mm of space between
heat sink HT1 and thewire. If this is not possible, secure the wire
with tape or other methodto be sure that a minimum of 2.5 mm
spacing is preserved.And the earth wire for 220V must be placed
in front of the Heat sinker HT1 as following figure.
120V Type
Heat sinker
220V Type
Figure 4-19. Earth terminal and wire position
Disassembly and Assembly
Earth terminal
2.5mm
Earth terminal
Heat sinker
Disassembly
Revision B
78