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JBL P12SW manual

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Table of contents for the manual

  • Page 1

    Models: Northridge ™ E -Series E 250P Performance S eries P12S W Powered Subwoofer s Service Manual JBL Cons umer Produc ts 250 Cr ossw ays Par k D r. W oodbury , New Y or k 11797 Rev3 4/2006[...]

  • Page 2

    - CONTENTS - BASIC SPECIF I CATIO N S ……………. ……..…………..1 SAFET Y INF ORMAT ION …………….……..….………..2 E250P P ACKING……..………………….….….….……...3 P12SW PACKING……..……………………….…………4 DETAILED SPECI FICAT IONS ………. ……. .…………..5 CONNECTIONS…?[...]

  • Page 3

    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 fr om this cabinet has been properly trained in pr otecting against avoidable injury and shock. Therefor e, any service procedur es are to be performed by qualified servic[...]

  • Page 4

    1 5 3 14 2 4 E250P Packaging Ref# Part N umbe r Description Qty 1 3512 49-0 02 M ANUAL, O W NER- E25 0P/ E250 P 1 2 35 1249-0 01 CAR TON,M ASTER -E 250P (BEEC H M ODEL) 1 3512 49-0 03 CAR TON,M ASTER -E 250P (BLAC K M ODEL) 1 3508 84-0 03 CAR TON,M ASTER -E 250P (C HERRY M ODEL) 1 3 3512 52-0 01 PAD,EN D ,TOP- E250 P 1 4 3512 52-0 02 PAD,EN D ,BOT-[...]

  • Page 5

    1 5 3 2 4 Packaging P12SW 6 Ref # Pa rt Numbe r De scription Qty 1 361803- 001 P12S W Owner ’s M anual 1 2 3618 13-0 01 P12S W Out er Car ton 1 3 351252- 001 Packin g Foam (T op) 1 4 351252- 002 Packin g Foam (Bot tom) 1 5 3383 81-0 01 W a rr a nty C ard 1 6 3 52024 -003 Fro nt Grille 1 4[...]

  • Page 6

    JBL E250P/P12SW Powered Sub/ Plate Amp LINE VOLTAGE Yes/No Hi/Lo Line Nom. Unit Notes US 120vac/60Hz Yes 108-132 120 Vrms Normal Operation EU 230vac/50-60Hz Yes 207-264 230 Vrms Normal operation, MOMS required Parameter Specification Unit QA Test Limits Conditions Notes Amp Section Type (Class AB, D, other) D n/a n/a Load Impedance (speaker) 5.6 Oh[...]

  • Page 7

    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 Input Power 24 Watts 26 @ nom. line voltage Maximum al[...]

  • Page 8

    Analog Receiver/Processor – Speaker -Level Connections Use this installation method only with an analog receiver/ processor that does not have digital processing or bass management, and also does not have a subwoofer output or a volume-controlled preamp (line-) level output: Connect the speaker wires for both your main left and right speakers, an[...]

  • Page 9

    Digital Receiver/Processor – LFE Connection Use this installation method for Dolby Digital, DTS ® or other digital surround processors that have bass-management programming, or for analog receivers/processors that have a filtered subwoofer output: IMPORT ANT : Make sure that the LFE toggle switch on the subwoofer is in the “LFE” position. Us[...]

  • Page 10

    OPERA TION When the unit is plugged in and the power switch is on and no signal is received, the LED on the top of the unit will turn red. When a signal is present, the LED will turn green. Note: It will take several min- utes for the LED to turn from green to red after the input signal to the subwoofer is removed. Due to JBL ’ s unique high-outp[...]

  • Page 11

    TROUBLESHOOTING If you used the high-level (speaker) inputs and there is no sound from any of the speakers: • 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- tions between the receiver/ amplifier a[...]

  • Page 12

    Ref# Part N umbe r Description Qty 6 3513 48-0 01 PLAT E,LED/ LOGO- E25 0P 1 7 3381 25-0 02 ASY,L ED-E2 50P/E 250P 1 8 3364 86-0 01 ASY,F OOT ,PLSTC - E 250P 4 9 763- 3111 0-4 0 SCR EW, 8 X 2 1/ 2,TR,PH ,PB ,BLK Z INC ,LC S (F OOT) 4 10 9083 02-012 SCRE W , P B,HXS, #6x.7 5,ZIN C ( LOGO P LATE) 4 11 9038 02-016 SCR EW, P B,HXS, #8x1" ,ZIN C ( [...]

  • Page 13

    9 8 Amplifier – Not for Sale Exploded V iew P 12S W Ref # Pa rt Numbe r De scription Qty 1 352024- 003 ASY, GRI LLE, BLK, F RNT 1 2 3332 49-0 01 CU P,GRI LLE 4 3 88 2-41 110-1 2 SCRE W , 6 X 3/ 4,PAN ,PH,P B,BLK ZI NC,LC S (A MP LIFI ER) 10 4 903802- 016 SCRE W , P B,HX S,#8x 1",ZI NC ( W OOFER ) 8 5 3512 43-0 01 RI NG,TRI M ,12" 1 6 33[...]

  • Page 14

    TEST SET-UP A ND PROCEDURE Ge nera l F unc ti o n UUT = Unit Under Test 1) Connect a pai r of level input cables (RCA) f rom signal generator to eit her Right or Left Level input on UUT. LEVEL contr ol shoul d be f ull count ercl ock wise (MI N). Make sure the LF E/Norm al sw i t ch is in the NO RMAL positi on. 2) Tur n on gener at or, adjust t o 1[...]

  • Page 15

    & P10SW & P12SW 14 E250P/ P12SW subwoo fers[...]

  • Page 16

    JBL I n corporated 250 C ross ways Park D r. W oodbury, N e w Yor k 11797 (516) 496-3400 Serv ice Bu lletin Serv ice bul leti n # JBL2005- 01 Decem ber 2005 W a rranty l abor rate: M IN OR repair To: All JBL Servi ce Center s M odel: E150P, E250P Subwoofers Subject: “ Chir p” N oise on Pow er- Up I n t he ev ent yo u recei ve an E150P o r E250P[...]

  • Page 17

    TECH TIPS Troubl esh ooting tips a nd s olu tion s to comm on ser v ice pr oblems For models: E150P,E 250P T I P# JBLT T 2003-04 Rev 2 P10S W, P12S W PB10,P B12 (Revision 2) * Su b ject: Replaci ng MOS FETS Q18, Q22 In the event you need to replace MOSFET transisto rs Q18 or Q22 as part of a repair, i t is im portant to use ONLY : • JBL part# 051[...]

  • Page 18

    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) should read >1M Ω 2. Power Up LED RED With[...]

  • Page 19

    - 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 level input -Voltage measurements 15.3V at speak[...]

  • Page 20

    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 yes yes no no yes yes no no yes yes START Check +/-1[...]

  • Page 21

    20 E250P/ P12SW subwoo fers[...]

  • Page 22

    21 E250P/ P12SW subwoo fers[...]

  • Page 23

    22 E250P/ P12SW subwoo fers[...]

  • Page 24

    23 E250P/ P12SW subwoo fers[...]

  • Page 25

    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 MOF Resistor 22R 2W(S) J MB TYPE 15x8 R10 1 022-5000[...]

  • Page 26

    Part Number Description Reference Designator Qty 024-470698-120 SMD Resistor 470K 1/8W J 0805 R70 1 024-470798-120 SMD Resistor 4M7 1/8W J 0805 R60 1 024-487498-100 SMD Resistor 4K87 1/8W F 0805 R51,53 2 024-510398-120 SMD Resistor 510R 1/8W J 0805 R57 1 024-560598-120 SMD Resistor 56K 1/8W J 0805 R122 1 024-620398-100 SMD Resistor 620R 1/8W F 0805[...]

  • Page 27

    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 Transistor PN:2N5551 TO-92 Q17 1 051-640001-000 MOS[...]

  • Page 28

    Part Number Description Reference Designator Qty 063-010012-000 Brckt for pwr transistor P/N:TRK-1 063-321100-001 E250P Faceplate 322x105.7x15mm BLK (94V0)ABS E250P 063-321101-000ZR P12SW Faceplate 322x105.7x15mm BLK (94V0)ABS P12SW 063-531808-000 Bucket 322x105.7x146.5mm blk (94VO) 071-100608-100 Fiber Washer OD=8mm ID=3.2 t=1 (red) 071-100851-000[...]

  • Page 29

    OPAMP, QUAD TL074CDR U2, 3 OPAMP, DUAL TL072CDR SO-8, NJM4558M-TE3 U5, 6, 4 IR2111 HALF-BRIDGE DRIVER U7 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 MMBT3904LTI SOT23, MMBT3906LTI SOT23, DTC114EK SM[...]

  • Page 30

    SCHEMATICS NOTE: THIS VOLTAGE IS REFERENCED TO -V, NOT CIRCUIT GROUND NOTE: THIS VOLTAGE IS REFERENCED TO -V, NOT CIRCUIT GROUND 29 E250P/ P12SW subwoo fers P12SW Value of C65 = 47uf See service bulletin for E250P[...]

  • Page 31

    30 E250P/ P12SW subwoo fers NOTE: THIS VOLTAGE IS REFERENCED TO -V, NOT CIRCUIT GROUND[...]