JBL Northridge E250P Preliminary Service Manual
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Summary of Contents for JBL Northridge E250P
- Page 1 ™ Northridge E-Series E250P Powered Subwoofer Preliminary Service Manual JBL Consumer Products 250 Crossways Park Dr. Woodbury, New York 11797...
- Page 2 (502mm x 365mm x 419mm) Weight: 43 lb/19.5kg JBL continually strives to update and improve 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.
- Page 3 JBL E250P Powered Sub/ Plate Amp LINE VOLTAGE Yes/No Hi/Lo Line Nom. Unit Notes US 120vac/60Hz 108-132 Vrms Normal Operation EU 230vac/50-60Hz 207-264 Vrms Normal operation, MOMS required QA Test Parameter Specification Unit Limits Conditions Notes Amp Section Type (Class AB, D, other)
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Page 4: Speaker Connection
(+) and negative (–) terminals. It proper connections, and any which description best is important to connect both damage to JBL or other equip- matches your system and speakers identically: ment due to improper connec- follow the corresponding... - Page 5 Analog Receiver/Processor – Speaker-Level Connections Use this installation method the left high-level inputs on speaker and left input on the only with an analog receiver/ the subwoofer. Insert the subwoofer, and then for the (+) processor that does not have joined (twisted) wires into the and (–) connections for the digital processing or bass...
- Page 6 Analog Receiver/Processor – Line-Level Connections Use this installation method may connect the subwoofer with an analog receiver/ output on your receiver/pre- processor that does not have amplifier to either the left or digital processing or bass right line-level input on the management, and that is subwoofer.
- Page 7 LED on the top of the unit will signal to the subwoofer is woofer can be turned off, turn red. When a signal is removed. Due to JBL’s unique whenever desired, if you do present, the LED will turn high-output, high-efficiency not wish to leave it in auto green.
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Page 8: Troubleshooting
Phase Control The Phase Control determines bass output at the listening If at some time in the future whether the subwoofer’s pis- position. you happen to rearrange your ton-like action moves in and listening room and move your Remember, every system, out in phase with the main speakers, you should experi- room and listener is different. -
Page 9: Tech Tips
In the event you need to replace MOSFET transistors Q18 or Q22 as part of a repair, it is important to use ONLY the JBL part# FE106401110 or only the brands: International Rectifier, or Fairchild. Replace both Q18 and Q22 MOSFET’s in the circuit, even if only one seems to be damaged. -
Page 10: Exploded View
E250P Amplifier – Not for Sale Exploded View Ref# Part Number Description 351348-001 PLATE,LED/LOGO-E250P 338125-002 ASY,LED-E250P/E250P 336486-001 ASY,FOOT,PLSTC- E250P 763-31110-40 SCREW, 8 X 2 1/2,TR,PH,PB,BLK ZINC,LCS (FOOT) 908302-012 SCREW, PB,HXS,#6x.75,ZINC (LOGO PLATE) 903802-016 SCREW, PB,HXS,#8x1",ZINC (WOOFER) DCR 4.8 Ω 338128-002 ASY, WOOFER,12"... - Page 16 E250P Electrical Parts List Part Number Description Reference Designator Resistors 020-220497-120 Carbon Film 2K2 1/4W J 1K 1W J 021-100401-120 MOF Resistor R103 021-120403-020 MOF Resistor 1K2 3WS J 8x20 021-120405-020 MOF Resistor 1K2 5WS J 8x25 021-220202-120 MOF Resistor 22R 2W(S) J MB TYPE 15x8 022-500003-020 KNP Resistor...
- Page 17 Part Number Description Reference Designator 024-470798-120 SMD Resistor 4M7 1/8W J 0805 024-487498-100 SMD Resistor 4K87 1/8W F 0805 R51,53 024-510398-120 SMD Resistor 510R 1/8W J 0805 024-560598-120 SMD Resistor 56K 1/8W J 0805 R122 024-620398-100 SMD Resistor 620R 1/8W F 0805 R16,18 024-680498-120 SMD Resistor...
- Page 18 Part Number Description Reference Designator 051-290700-100 PNP Transistor PN:MPS2907A RLRA TO-92 Q19,23 051-540101-000 PNP Transistor PN:2N5401 TO-92 051-555100-000 NPN Transistor PN:2N5551 TO-92 051-640001-000 MOSFET N-Channel PN:IRF640N TO-220 (IR) Q18,22 052-400080-000 Bridge Regulator PN:RS804 400V,8A 053-211100-000 IC;DIP,Driver PN:IR2111 Half-Bridge Driver 054-000100-100 SMD Diode PN:ES1D 200V 1A D5,26,29,33,38...
- Page 19 Part Number Description Reference Designator 063-010012-000 Brckt for pwr transistor P/N:TRK-1 063-321100-001 Plate 322x105.7x15mm BLK (94V0)ABS 063-531808-000 Bucket 322x105.7x146.5mm blk (94VO) 066-120300-900 Cable Tie CV-120S 071-100608-100 Fiber Washer OD=8mm ID=3.2 t=1 (red) 071-100851-000 Washer ID=5.1 OD=12 t=1m/m 072-010007-000 RCA Jack SCJ-1020 2P(G) wht, red 072-040039-000 Terminal...
- Page 20 E250P Semiconductor Pinout Diagrams 2N5401 MOSFET IRF640 OPAMP, QUAD Q18, 22 TL074CDR U2, 3 3 Collector 1. G Base 2. D 3. S 1 Emitter MPSW06RLRA, MPSW56RLRAMPQ, MPS2222ARLRA, OPAMP, DUAL 2N2907A, 2N5551, TIP31C TL072CDR SO-8, Q2, 16, 3, 21, 19, 23, 17 NJM4558M-TE3 U5, 6, 4 3 Collector...
- Page 23 E250P Packaging Ref# Part Number Description 351249-002 MANUAL, OWNER-E250P/E250P 351249-001 CARTON,MASTER-E250P (BEECH MODEL) 351249-003 CARTON,MASTER-E250P (BLACK MODEL) 350884-003 CARTON,MASTER-E250P (CHERRY MODEL) 351252-001 PAD,END,TOP-E250P 351252-002 PAD,END,BOT-E250P 338381-001 WARRANTY CARD,1/5YR,JBL 352024-001 ASY, GRILLE, BLK, FRNT...