1ACOM1000 TOP COVER REMOVAL and INSTALLATIONSAFETY FIRST!W A R N I N G HIGH VOLTAGE!===========================The amplifier works with high voltages up to 3000V which is LETHAL! For yoursafety pull the amplifier power plug out of the mains wall outlet and WAIT ATLEAST 30minutes EACH TIME BEFORE you remove the cover of the amplifier.Disconnect all cables from the amplifier (grounding last). Do not touch anypart inside while the amplifier is open because some residual voltages maystill be present!1. Removing the top cover.Using a Philips-2 screwdriver, unscrew 9 pcs of "eco-fix" flange-button headscrews to release the top cover (2x3 pcs on each bottom-side edge, and threemore on the rear-top edge of the box). Don't unscrew four screws that hold thegrid above the tube.Lift the rear edge of the cover slightly (to 2-3cm) and then pull the coverbackwards, in order to release it from front-panel's chutes. Remove the topcover.