JBL Northridge E-Series E150P Service Manual

Also see for E150P: Owner's guide Owner's guide Service manual Owner's guide

Contents

WarningAny person performing service of this unit will be exposedto hazardous voltages and the risk of electric shock. It isassumed that any person who removes the amplifier fromthis cabinet has been properly trained in protectingagainst avoidable injury and shock. Therefore, any serviceprocedures are to be performed by qualified servicepersonal ONLY!CautionEarly revisions of the unit did not have a power switch.Hazardous voltages are resent within the unit whenever itis plugged in.Before amplifier is plugged in, be sure its rated voltagecorresponds to the voltage of the AC power source to beused. Incorrect voltage could cause damage to theamplifier when the AC power cord is plugged in. Do notexceed rated voltage by more than 10%: operation below90% of rated voltage will cause poor performance or mayshut the unit off.Leakage/Resistance CheckBefore returning the unit to the customer, perform aleakage or resistance test as follows:Leakage Current. Note there is no power switch on earlyrevisions of this unit. When the power plug is plugged in,the unit is live. Connect the unit to its rated power source.Using an ammeter, measure the current between theneutral side of the AC supply and chassis ground of theunit under test. If leakage current exceeds 0.5mA, the unitis defective. Reverse the polarity of the AC supply andrepeat.Resistance. Measure the resistance from either side of theline cord to chassis ground, If it is less than 500k ohms,the unit is defective.WARNING! DO NOT return the unit to the customer if itfails one of these tests until the problem is located andcorrected.Critical ComponentsAll components identified with the IECsymbol in the parts list and schematicdiagram designate components in whichsafety can be of special significance whenreplacing identified with. Use only thereplacement parts designated in the parts list or partswith the same rating of resistance, wattage or voltage.SAFETY INFORMATIONList of Safety ComponentsRequiring Exact ReplacementsPart Number/DesignatorDescriptionF1093-205209-300Line Fuse Slo Blo 1.25A5x20mm083-041802-009 250V UL approved SPT-2 orbetter with polarized plug, ULapproved wired with the hot sideto fusedside. Use with factoryreplacement panel strain relief(70305) only.PT1042-010052-003Power Transformer.Use only factoryreplacement.BR1052-400080-000Bridge diode. Use onlyfactory replacement.C6,8034-470745-2004700uF 50V electrolyticfilter caps. Be surereplacement part is atleast the same workingvoltage and capacitancerating. Also the leadspacing is important.Incorrect spacing maycause premature failuredue to internal cabinetpressure and vibration.063-531808-000Rear Amp CoverUse only factoryreplacementInductor043-560200-000L1 - Use only factoryreplacementInductor043-300101-000L2 - Use only factoryreplacementInductor043-700101-000L3 - Use only factoryreplacementInductor043-324300-000L4 - Use only factoryreplacement2E150P/P10SW subwoofers