Jbl e 150 p service manual
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Extracted text from jbl e 150 p service manual (Ocr-read)
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- CONTENTS - BASIC SPECIFICATIONS …………….……..…………..1 SAFETY INFORMATION …………….……..….………..2 DETAILED SPECIFICAT IONS ……….……..…………..3 CONNECTIONS………………………...……..…...…..…4 OPERATION ……..………………….……...…….….…\ ...7 BASIC TROUBLESHOOT ING..………….………………8 EXPLODED VIEW /PARTS LIST…….….….…………....9 TEST SET-UP AND PROCEDURE….….……………...10 AMPLIFIER BLOCK DIAGRAM…….………….……..…11 TECH TIP JBLTT2003-04 ..……….……………….…...12 DETAILED TROUBLESHOOTING..……………… ……13 P.C.B. DRAWINGS….…………………………………….16 ELECTRICAL PARTS LIST ..……….……….……….…20 IC/TRANSISTOR PINOUTS..……..….…….….….….….24 SCHEMATICS………..……………………….…………..25 \ PACKING……..……………………………….….….\ …...27 E150P SPECIFICATIONS Amplifier Power (RMS): 150 W atts Peak Dynamic Power *: 250 W atts Driver: 10" (254mm) PolyPlas™ Inputs: Line Level (switchable to LFE) and Speaker Level with 5-way binding posts Low-Pass Frequency: Variable from 50Hz to 150Hz Frequency Response: 27Hz – Low-pass crossover setting Dimensions (H x W x D): 17-3/4" x 12-1/4" x 14-1/2" (451mm x 311mm x 368mm) W eight: 33.5 lb/15.2kg JBL continually striv es to update and improv e existing products, as well as create new ones. The specifications and details in this and related JBL publications are therefore subject to change without notice. * The Peak Dynamic Power is measured by recording the highest center-to-peak voltage measured across the output of a resistive lo ad equal to minimum impedance of the transducer, using a 50Hz sine wave burst, 3 cycles on, 17 cycles off. E150P 1
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W ar ning Any person performing service of this unit will be exposed to hazardous voltages and the risk of electric shock. It is assumed that any person who removes the amplifier from this cabinet has been properly trained in protecting against avoidable injury and shock. Therefore, any service procedures are to be performed by qualified service personal ONLY! Caution Early revisions of the unit did not have a power switch. Hazardous voltages are resent within the unit whenever it is plugged in. Before amplifier is plugged in, be sure its rated voltage corresponds to the voltage of the AC power source to be used. Incorrect voltage could cause damage to the amplifier when the AC power cord is plugged in. Do not exceed rated voltage by more than 10%: operation below 90% of rated voltage will cause poor performance or may shut the unit off. Leakage/Resistance Check Before returning the unit to the customer, perform a leakage or resistance test as follows: Leakage Current. Note there is no power switch on early revisions 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 the neutral side of the AC supply and chassis ground of the unit under test. If leakage current exceeds 0.5mA, the unit is defective. Reverse the polarity of the AC supply and r epeat. Resistance. Measure the resistance from either side of the line cord to chassis ground, If it is less than 500k ohms, the unit is defective. W ARNING! DO NOT return the unit to the customer if it fails one of these tests until the problem is located and corrected. Critical Components All components identified with the IEC symbol in the parts list and schematic diagram designate components in which safety can be of special significance when r eplacing identified with. Use only the r eplacement parts designated in the parts list or parts with the same rating of resistance, wattage or voltage. SAFETY INFORMATION List of Safety Components Requiring Exact Replacements Part Numb er/ Designat or Descr iption F1 093- 205 209- 300 Line Fuse Slo B lo 1. 25A 5x20m m 083- 041 802- 009 250V UL app rove d S PT-2 o r better with po larized pl ug, UL appr ove d w ired w ith the hot side to fu sed side. U se with factory replace ment pane l strain relief (70305 ) only. PT1 042- 010 052- 003 Power T ransformer. Use o nly factory replace ment. BR1 052- 400 080- 000 Bridge diode . Use onl y factory replace ment. C6,8 034- 470 745- 200 4700uF 50V electrolytic filter caps. Be s ure replace ment part is at least the same working vol tage and capa citance rating. Also the lead spaci ng i s important. Incorrect spa cing may cause pr emature failure due to internal cab inet pressur e and vibration. 063- 531 808- 000 Re ar Amp Co ver Use o nly factory replace ment Induc tor 043- 560 200- 000 L1 - Use on ly factory replace ment Induc tor 043- 300 101- 000 L2 - Use on ly factory replace ment Induc tor 043- 700 101- 000 L3 - Use on ly factory replace ment Induc tor 043- 324 300- 000 L4 - Use on ly factory replace ment E150P 2