JBL ES250P Service Manual
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JBL ES250P Service Manual

Es series
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See also: Owner's Manual
ES Series
ES250P
Powered Subwoofer
Service Manual
JBL Consumer Products
250 Crossways Park Dr.
Woodbury, New York 11797
Rev0
3/2008
Released 2008
Discontinued XXXX

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Summary of Contents for JBL ES250P

  • Page 1 ES Series ES250P Powered Subwoofer Service Manual JBL Consumer Products 250 Crossways Park Dr. Woodbury, New York 11797 Rev0 3/2008 Released 2008 Discontinued XXXX...

  • Page 2: Table Of Contents

    Dimensions (H x W x D): Weight: 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. The Peak Dynamic Power is measured by recording the highest center-to-peak voltage measured across the output of a resistive load equal to minimum impedance of the transducer, using a 50Hz sine wave burst, 3 cycles on, 17 cycles off.

  • Page 3: Detailed Specifications

    ES250P JBL ES250P 250W Powered Sub Amp Yes/No US 120vac/60Hz EU 230vac/50-60Hz Parameter Specification Amp Section Type (Class AB, D, other) Load Impedance (speaker) AVG System impedance Rated Output Power (120VAC) AVG RMS Dynamic Power THD @ Rated Power THD @ 1 Watt...
  • Page 4 ES250P Yes/No Turn-off Transient Efficiency Efficiency Efficiency at 1/8 of rated power Off state input power Stand-by Input Power Power Cons. @ rated power Protections Short Circuit Protection Thermal Protection DC Offset Protection Line Fuse Rating USA-Domestic 3.15 Other Parameters/Notes: 1.

  • Page 5: Packing

    ES250P...

  • Page 6: Controls/Connections

    ES250P CONTROLS AND CONNECTIONS Rear Panel ¡ Phase Switch ™ LFE/Normal Selector £ Subwoofer-Level Control ¢ Crossover Adjustment ∞ Line-Level/LFE Input § Power Switch ¡ ™ £ ¢ ∞ § AC 120V~60Hz...

  • Page 7: System Connections

    ES250P SYSTEM CONNECTIONS If you have a Dolby ® Digital or DTS ® receiver/processor with a low-frequency-effects (LFE) or subwoofer output: Set LFE/Normal switch to “LFE.” If your receiver/processor does not contain a Dolby Digital or DTS processor, but has subwoofer outputs: Set line-level/LFE switch to “Normal.”...

  • Page 8: Operation

    If the problem appears in the opposite speaker, the cause is in another component or cable. In the event that your subwoofer ever needs service, contact your local JBL dealer, or visit www.jbl.com for a service center near you.

  • Page 9: Exploded View/Parts List

    ES250P...

  • Page 10: Test Set-Up And Procedure

    General Unit Function (UUT = Unit Under Test) 1) From the signal generator, connect line level (RCA) cables to the Subwoofer Line Level Input jacks L/R on the UUT. Use a Y-cable from a mono source if necessary to connect to both inputs.

  • Page 11: Amplifier Block Diagram

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  • Page 13: Detailed Troubleshooting

    ES250P ES250P Troubleshooting Flow Chart Start Dc voltage check ±Vcc,±15V Check transformer Power on check LED red &green Check vol module cable& ±15V.etc Test frequency Response Check U Test phase sw,low pass sw rabos vr Check sw103,102, R158,163,177 etc Test input sensitivity...

  • Page 14: Drawings

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  • Page 19: Electrical Parts List

    ES250P ES250P (120v) Electrical Parts List Part Number Description INPUT/PREAMP PCB & DAUGHTER BOARD PCB Resistors 110-14392J26-E Carbon resistor 3.9K 1/4W ±5% CF (RoHS) 110-16000j26-e Carbon resistor 0Ω 1/6W ±5% CF (RoHS) 110-16101j26-e Carbon resistor 100Ω 1/6W ±5% CF (RoHS) 110-16102j26-e Carbon resistor 1K 1/6W ±5% CF (RoHS)
  • Page 20 ES250P Part Number Description INPUT/PREAMP PCB & DAUGHTER BOARD PCB 135-3105m50-e electrolytic CAP. 1U 50V ±20% (RoHS) 135-3106m50-e electrolytic CAP. 10uF 50V ±20% (RoHS) 135-3107m16-e electrolytic CAP. 100uF 16V ±20% (RoHS) 135-3107m25-e electrolytic CAP. 100U 25V ±20% (RoHS) 135-3226m50-e electrolytic CAP. 22U 50V ±20% (RoHS) 139-3227m16-e LOW LEAKAGE EC 220uF 16V±20% (RoHS)
  • Page 21 ES250P Part Number Description MAIN PCB 130-3f104z503-e Disc Capacitor 0.1U 50V +80/-20% (RoHS) 130-ch101j503-e Disc Capacitor100P 50V ±5% (RoHS) 135-3107m16-e electrolytic cap 100uF 16V ±20% (RoHS) 135-3226m50-e electrolytic cap 22U 50V ±20% (RoHS) 135-3227m10-e elec trolytic cap 220U 10V ±20% (RoHS) 139-3227m16-e low leakage ec 220uF 16V±20% (RoHS)
  • Page 22 ES250P Part Number Description CLASS D PCB ASS'Y (RECOMMENDED REPLACE ENTIRE MODULE PART# 051-A05022C-E) Capacitors 141-d7104ka0-e SMD CAPACITOR 0.1uF 100V 10% 1210 X7R (RoHS) 141-d7104kb5-e SMD CAPACITOR 0.1uF 250V 10% 1210 X7R (RoHS) 141-c0101k50-e SMD CAPACITOR 100pF 50V 10%1206 NP0 (RoHS)
  • Page 23 ES250P Part Number Description MISC./MECHANICAL & AC INPUT PCB 335-NYL-00002-0BAEWIRE CLKP 4K-4 NO-BB(RoHS) 336-RUB-05103-0BAERUB GASKET 97*16*3.0T BLACK(RoHS) 350-EM04012D024-E 4￠*12 WOOD SCREW BLACK (RoHS) 351-AM03008A078-E M3*8 Machine screw with nickel(RoHS) 351-AM03008A079-E M3*8 Machine screw crloss BLK (RoHS) 351-AM03018A364-E Machine screw SCREW M3*18 BLK (RoHS)

  • Page 24: Ic/Transistor Pinouts

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  • Page 25: Schematics

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