JBL PC 600 Troubleshooting Manual

Also see for Performance Series PC600: Brochure Owner's manual

Contents

wiring diagram

JBL PC 600 Troubleshooting Manual Manual pdf 1 page image

000054544EXPLODED VIEWWIRING DIAGRAMITEMNO. DESCRIPTION QTY. PART NO.1. SCREW, .25-20 x .75, MS, BHXS, BLK 2 902301-0122. MOUNTING BRACKET, WALL 2 336774-0013. TWEETER GASKET 1 336613-0014. SCREW, 6-32 x .38, MS, PPH, ZINC 2 900302-0065. TWEETER 1 335663-0016. TWEETER FACEPLATE 1 335695-0017. SCREW. 6x.75, PB, HXS, ZINC 4 908302-0128. GRILLE CUP 4 333249-0019. MIDRANGE GASKET 1 335656-00110. MIDRANGE DRIVER 1 336327-00111. SCREW, 6x.75, PB, HXS, ZINX 4 908302-01212. JBL LOGO 1 335470-00213. GRILLE 1 336629-00114. SCREW, #8x1, PB, HXS, ZINC 8 903802-01615. WOOFER 2 335899-001ITEMNO. DESCRIPTION QTY. PART NO.16. WOOFER GASKET 2 335657-00117. SCREW, #6x.75 PPHD, PB, BLK 4 6356318. NETWORK 1 336773-00119. GASKET, TERMINAL CUP 1 351317-00120. SCREW, #6x.75, PB, HXS, BLK 6 908301-01221. TERMINAL CUP 1 336616-00122. OWNERS MANUAL 1 336608-00123. SURVEY CARD 1 331384-00124. PAD, END TOP & BOTTOM 2 336632-00125. CARTON, KIT 1 337058-00126. CARTON, MASTER 1 336631-00127. BUMPER 4 301821-00128. WRENCH, ALLEN 1 336600-00129. WARRANTY CARD 1 331994-001005421 2 CABINET(NOT FOR SALE)345671089111214151617181920212013JBL PC 600 Center Performance SeriesJBL Loudspeaker Troubleshooting/Repair TipsMost customers prefer to do simple loudspeaker repairs themselves. By following the steps below, a majority of loudspeakers can be returned totheir original factory performance with minimum effort. Choose the example that best describes the problem you are experiencing.Problem 1: No sound or distorted sound from one loudspeaker in a pair (or set)Connect the dead/distorting loudspeaker to a different amplifier channel (one that had a functioning loudspeaker connected to it). If it functionsnormally, the problem is not loudspeaker-related. If the loudspeaker still makes no sound or sounds distorted, a wire may have become looseor disconnected, the network (also known as a crossover) may be defective, the drivers (woofer, tweeter, etc.) may be defective or, in very rarecases, all may be defective.Refer to the wiring diagram and exploded view below. The network is a small circuit board found on the inside of the terminal cup, or mounted toan inside wall of the enclosure. It sends low-frequency sounds to the woofer, high-frequency sounds to the tweeter and, if applicable, mid-frequencysounds to the midrange driver. Make sure all wires are secure and connected. Look for components on the network that look burnt, “bulged,”or abnormal. If everything looks normal, connect the network to the drivers from another matching loudspeaker. MAKE SURE you attach thecorrect wires to each driver – mid- and low-frequency sounds can damage the tweeter! If there is still no sound or distorted sound, the networkis defective. If there is clean undistorted sound, the drivers are defective.Problem 2: No sound or distorted sound from one or more (but not all) drivers in an enclosureRemove the problem driver(s) from the enclosure and make sure all wires are secure and connected. If they are, proceed with the following test:Woofer or midrange driver – Connect the driver’s + and – input terminals directly to the loudspeaker wires from your receiver/amplifier and playsome music at a reasonable volume. If the driver now sounds normal (produces a clean, undistorted sound), the network is most likely defective.Tweeter – Replace the tweeter with a functioning tweeter from another loudspeaker. If the tweeter now functions normally (produces clean,undistorted sound), the original tweeter is defective. If the replacement tweeter also sounds distorted or produces no sound, the network ismost likely defective.Problem 3: Loudspeakers distort, rattle or pop at higher volumesThis is usually NOT a loudspeaker problem. Common causes are too much power (playing the loudspeakers too loud and causing them to distort),an amplifier with not enough power (the amplifier can’t produce the required volume without distorting), excessive equalization (turning the tonecontrols too far clockwise, and/or engaging the loudness/bass boost button on your receiver) or some combination of the above. If only oneloudspeaker is exhibiting the problem, and you’re confident that it’s not caused by too little power/too much power/excessive equalization, seesolutions for Problems 1 and 2.Note: A Phillips screwdriver and Allen wrench (hex key) 7/64" and 5/32" sizes are required to service this product

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