Akai MPC 3000 Operator's Manual page 6

WARNING!!
To prevent fire or shock hazard, do not expose this appliance to rain or moisture.
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
THE SYMBOLS ARE RULED BY UL STANDARDS (U.S.A).
The lightning flash with the arrowhead symbol superimposed across a graphical
representation of a person, within an equilateral triangle, is intended to alert the user
to the presence of uninsulated "dangerous voltage" within the product's enclosure;
that may be of sufficient magnitude to constitute a risk of electric shock.
The exclamation point within an equilateral triangle is intented to alert the user
to the presence of important operating and maintenance (servicing) instructions
in the literature accompanying the appliance.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
DO NOT REMOVE COVER (OR BACK).
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