Brother GTX-4 Instruction Manual page 7

SAFETY INSTRUCTIONS
NOTE
Use the printer in an area which is free from sources of strong electrical noise such as electrical line noise or
static electric noise. Sources of strong electrical noise may cause problems with correct operation.
Any fluctuations in the power supply voltage should be within ±10% of the rated voltage for the printer.
Voltage fluctuations which are greater than this may cause problems with correct operation.
The power supply capacity should be greater than the requirements for the printer's power consumption.
Insufficient power supply capacity may cause problems with correct operation.
In the event of an electrical storm, turn off the power and disconnect the power cord from the wall outlet.
Lightning may cause problems with correct operation.
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