DPO4000 Series Service Manual v
Service Safety Summary
Only qualified personnelshould perform service procedures. Read this Service
Safety Summary and the General Safety Summary before performing any service
procedures.
DoNot ServiceAlone. Do not performinternal service or adjustments of this
product unless anotherperson capable of rendering first aid and resuscitation is
present.
DisconnectPower. To avoid electric shock, switch off the instrument power,then
disconnect the powercord from the mains power.
UseCar e When Servicing With Power On. Dangerous voltages or currentsmay
exist in this product.Disconnect power, remove battery (if applicable),and
disconnect test leadsbefore removing protective panels, soldering, or replacing
components.
Toavoid electric shock, do not touch exposed connections.