Printer Options; Precautions - Samsung ML-7300 User Manual

Precautions

Disconnect The Power Cord
Discharge Static Electricity
Never remove the printer control board while the printer is
plugged in.
To avoid the possibility of electrical shock, always disconnect the
power cord when installing or removing ANY internal or external
printer option.
The control board and internal printer options
(SIMM, Network interface) are sensitive to static electricity.
Before installing or removing an internal option,
discharge static electricity from your body by touching
something metal, such as the metal back plate on any device
plugged into a grounded power source.
If you walk round before finishing the installation, discharge any
static electricity again.
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RINTER PTIONS