JBL E250P - Manual - manualsarea.com

Page 3 - SAFETY INFORMATION; subwoofers

Warning Any 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 ...

Page 4 - Packaging; Number Description

1 5 3 14 2 4 E250P Packaging Ref# Part Number Description Qty 1 351249-002 MANUAL, OWNER-E250P/E250P 1 2 351249-001 CARTON,MASTER-E250P (BEECH MODEL) 1 351249-003 CARTON,MASTER-E250P (BLACK MODEL) 1 350884-003 CARTON,MASTER-E250P (CHERRY MODEL) 1 3 351252-001 PAD,END,TOP-E250P 1 4 351252-002 PAD,END...

Page 7 - SPEAKER CONNECTION

Parameter Specification Unit QA Test Limits Conditions Notes Turn-on Transient 50 mV-peak 2v-pp @ Speaker Outputs AC Line cycled from OFF to ON Turn-off Transient 50 mV-peak 2v-pp @ Speaker Outputs AC Line cycled from ON to OFF Efficiency Efficiency 65 % 64 Nominal Line voltage 120 VAC Stand-by Inpu...

Page 8 - Analog Receiver/Processor – Speaker-Level Connections

Analog Receiver/Processor – Speaker-Level Connections Use this installation method only with an analog receiver/ processor that does not havedigital processing or bassmanagement, and also doesnot have a subwoofer outputor a volume-controlled preamp(line-) level output: Connect the speaker wires forb...

Page 9 - Digital Receiver/Processor – LFE Connection; Analog Receiver/Processor – Line-Level Connections

Digital Receiver/Processor – LFE Connection Use this installation methodfor Dolby Digital, DTS ® or other digital surround processorsthat have bass-managementprogramming, or for analogreceivers/processors thathave a filtered subwoofer output: IMPORTANT: Make sure thatthe LFE toggle switch on thesubw...

Page 10 - OPERATION; Crossover Adjustments; * E250P: LED is on the amplifier faceplate

OPERATION When the unit is plugged inand the power switch is onand no signal is received, theLED on the top of the unit willturn red. When a signal ispresent, the LED will turngreen. Note: It will take several min-utes for the LED to turn fromgreen to red after the inputsignal to the subwoofer isrem...

Page 11 - TROUBLESHOOTING; Phase Control

TROUBLESHOOTING If you used the high-level(speaker) inputs and there is no sound from any of thespeakers: • Check that the receiver/amplifier is on and a source is playing. • Check that the powered subwoofer is plugged into an active electrical outlet and is switched on. • Check all wires and connec...

Page 12 - Exploded View

Ref# Part Number Description Qty 6 351348-001 PLATE,LED/LOGO-E250P 1 7 338125-002 ASY,LED-E250P/E250P 1 8 336486-001 ASY,FOOT,PLSTC- E250P 4 9 763-31110-40 SCREW, 8 X 2 1/2,TR,PH,PB,BLK ZINC,LCS (FOOT) 4 10 908302-012 SCREW, PB,HXS,#6x.75,ZINC (LOGO PLATE) 4 11 903802-016 SCREW, PB,HXS,#8x1",ZIN...

Page 14 - TEST SET-UP AND PROCEDURE; integrated amplifier fed by the signal generator.

TEST SET-UP AND PROCEDURE General Function UUT = Unit Under Test 1) Connect a pair of level input cables (RCA) from signal generator to either Right or Left Level input on UUT. LEVEL control should be full counterclockwise (MIN). Make sure the LFE/Normal switch is in the NORMAL position. 2) Turn on ...

Page 16 - Service Bulletin; W arranty labor rate: MINOR repair; subwoofer

JBL Incorporated 250 Crossways Park Dr. W oodbury, New York 11797 (516) 496-3400 Service Bulletin Service bulletin # JBL2005-01 December 2005 W arranty labor rate: MINOR repair To: All JBL Service Centers Model: E150P, E250P Subwoofers Subject: “Chirp” Noise on Power-Up In the event you receive an E...

Page 17 - TECH TIPS; Troubleshooting tips and solutions to common service problems; Replacing MOSFETS Q18, Q22; ONLY; Or only the brands: International Rectifier, or Fairchild.; Amplifier serial number starts with “HA”

TECH TIPS Troubleshooting tips and solutions to common service problems For models: E150P,E250P TIP# JBLTT2003-04 Rev2 P10SW, P12SW PB10,PB12 (Revision 2) * Subject: Replacing MOSFETS Q18, Q22 In the event you need to replace MOSFET transistors Q18 or Q22 as part of a repair, it is important to use ...

Page 18 - DETAILED TROUBLESHOOTING

A. Power Amp Section Resistance Check Resistance from S+ (SPK O/P) to GND should be >1M Ω (NO LOAD) Resistance from V+ (C6 P+) to V- (C8 P-) gradually Fully CHARGED should read >10k Ω Resistance from V+ (C6 P+) to S+ (SPK O/P) should read >1M Ω Resistance from V- (C8 P-) to S+ (SPK O/P) sho...

Page 19 - High Level Input Sensitivity; Line

- Voltage measurements OP AMP U2(1) U2(14) U2(8) U3(7) U3(1) U3(14) U3(8) U5(7) U5(1) SPEAKER O/P 306.9mV 461mV 460mV 658mV 628mV 598mV 2.326V 2.02V 3.57V 23.33V 2. High Level Input Sensitivity -Set up Turn level, X’OVER FREQ POT Fully CW and LFE switch off Set Generator at 1.3V@50Hz Signal to High ...

Page 20 - Switch; FLOW CHART

CAUTION : SPEAKER OUTPUT IS FLOATING AND IS NOT PROTECTED AGAINST A SHORT TO GROUND. ALL TEST INSTRUMENTS CONNECTED TO THE OUTPUT MUST BE FLOATING. ATTACH THE SCOPE PROBE TIP TO S - and REFERENCE LEAD TO S+. (A 10mV signal may need from the input to trigger the Switch turn on) no no yes yes no no ye...

Page 25 - Resistors

E250P/P12SW (120v) Electrical Parts List Part Number Description Reference Designator Qty Resistors 020-220497-120 Carbon Film 2K2 1/4W J R11 1 021-100401-120 MOF Resistor 1K 1W J R103 1 021-120403-020 MOF Resistor 1K2 3WS J 8x20 R9 1 021-120405-020 MOF Resistor 1K2 5WS J 8x25 R6 1 021-220202-120 MO...

Page 27 - Miscellaneous

Part Number Description Reference Designator Qty 051-005600-100 PNP Transistor PN:MPSW56RLRA TO-92 (ON) Q3 1 051-222200-100 NPN Transistor PN:MPS2222ARLRA TO-92 Q21 1 051-290700-100 PNP Transistor PN:MPS2907A RLRA TO-92 Q19,23 2 051-540101-000 PNP Transistor PN:2N5401 TO-92 Q1 1 051-555100-000 NPN T...

Page 29 - Semiconductor Pinout Diagrams

OPAMP, QUADTL074CDRU2, 3 OPAMP, DUALTL072CDR SO-8, NJM4558M-TE3U5, 6, 4 IR2111 HALF-BRIDGE DRIVERU7 2 Base 3 Collector 1 Emitter 1 2 3 2N5401 Q1 2 Base 3 Collector 1 Emitter 1 2 3 MPSW06RLRA, MPSW56RLRAMPQ, MPS2222ARLRA, 2N2907A, 2N5551, Q2, 16, 3, 21, 19, 23, 17 MOSFET IRF640 Q18, 22 TIP31C Q4 MMBT...

JBL E250P - Manual

Table of Contents:

Summary

Other JBL Models