12-6■ Opening the receiver’s caseFollow the case opening procedures shown here whenyou want to install the optional unit UT-122, or replacethe clock battery or internal fuse.CAUTION!: DISCONNECT the AC power cablefrom the receiver before performing any work on thereceiver. Otherwise, there is danger of electric shockand/or equipment damage.CAUTION!: The receiver weighs approx. 20 kg(44 lb). Always have two people available to lift orturn over the receiver.q Remove the 6 screws from the rack mounting han-dles. And remove the rack mounting handles andside plates.w Remove the 10 screws from the rear of the receiverand remove the rear cover.e Remove the 8 screws from the top of the receiverand the 6 screws from the sides, then lift up the topcover.CAUTION: NEVER HOLD THE MAIN DIAL ORANY OTHER KNOBS when lifting the receiver.This may damage the receiver.■ Opening the shield caseFollow the case opening procedures shown here whenyou want to replace the internal fuse or optional UT-122 installation.q Remove the 9 screws from the shield cover of thereceiver’s top side.w Lift up the shield cover.qwe12 MAINTENANCE
