Epson PLQ-20 Setup Manual page 18

Adjust only those controls that are covered in the user
documentation. Improper adjustment of other controls may
result in damage requiring extensive repair by a qualified
technician.
Whenever you turn off the printer, wait at least five seconds
before turning it back on; otherwise, you may damage the
printer.
Do not turn off the printer while it is printing the self-test.
Always press the Offline button to pause printing. Then turn
off the printer.
Do not turn off the printer while it is printing the hex dump.
Always press the Offline button to pause printing. Then turn
off the printer.
Do not reconnect the power cord to an electrical outlet that
has the wrong voltage for your printer.
Never replace the print head yourself; you may damage the
printer. Also, other parts of the printer must be checked when
the print head is replaced.
You need to move the print head by hand to replace the ribbon
cartridge. If you have just used the printer, the print head may
be hot; let it cool for a few minutes before touching it.
Note for German-speaking users:
Bei Anschluss des Druckers an die Stromversorgung muss
sichergestellt werden, dass die Gebaudeinstallation mit einer 10 A-
oder 16 A-Sicherung abgesichert ist.
18 Safety Instructions