JBL PowerBass PB10 Service Manual
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JBL PowerBass PB10 Service Manual

Powerbass series powered subwoofer
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See also: Owner's Manual , Preliminary Service Manual
™
PowerBass
Series
PB10
Powered Subwoofer
Service Manual
JBL Consumer Products
250 Crossways Park Dr.
Woodbury, New York 11797
Rev7 2/2004

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Summary of Contents for JBL PowerBass PB10

  • Page 1 ™ PowerBass Series PB10 Powered Subwoofer Service Manual JBL Consumer Products 250 Crossways Park Dr. Woodbury, New York 11797 Rev7 2/2004...

  • Page 2: Table Of Contents

    Power Amp (PCB version 7.0)…………………………..……………….50 Preamp (PCB version 7.2)……………….…………….……….. ……….51 Power Amp (PCB version 7.2)………………… ……….……………….52 Schematics Version 2……………………………………..…………………….…53 PB10 – DIFFERENCES IN REVISION 1 AND REVISION 2 REVISION 1 REVISION 2 Amplifier has main power switch Amplifier faceplate says “Made in Canada”...

  • Page 3: Safety Information

    PB10 SAFETY INFORMATION Warning List of Safety Components Requiring Exact Replacements Any person performing service of this unit will be exposed to hazardous voltages and the risk of electric shock. It is Revision 1 Revision 2 Description assumed that any person who removes the amplifier from...

  • Page 4: Basic Specifications

    (with feet) 16" x 14" x 15" 406mm x 356mm x 381mm Weight 35 lb/15.9kg Refinements may be made on occasion to existing products without notice but will always meet or exceed original specifications unless otherwise stated. PowerBass is a registered trademark of JBL, Incorporated.

  • Page 5: Detailed Specifications

    PB10 DETAILED SPECIFICATIONS PB10 Subwoofer 150W Powered Sub Amp JBL PB 10 LINE VOLTAGE Yes/No Hi/Lo Line Nom. Unit US 120vac/60Hz 108-132 Vrms EU 230vac/50-60Hz 207-264 Vrms Parameter Specification Unit Conditions QA Test Limits Amp Section Type (Class AB, D, other)

  • Page 6: Controls And Their Function

    Front Panel Power - These lights will be red when the unit is plugged in and not receiving a signal; when the PB10 receives a signal, the lights will cycle to GREEN. If no signal is received after 10-15 minutes the lights will cycle back to RED (standby) until a signal is present again.

  • Page 7: Speaker Connection

    PB10 Speaker Connection When we designed the PB10 description best matches your post is visible under the collar. powered subwoofers, our goal system and follow the Insert the bare end of the wire was to offer the user the best...

  • Page 8: Dolby Pro Logic Line Level

    PB10 Dolby Pro Logic (Non-Digital) – Line Level Use this installation method for Note: If your receiver or Note for advanced users: If Dolby Pro Logic applications amplifier only has one your receiver/processor has (not Dolby Digital, DTS or other...

  • Page 9: Dolby Digital Or Dts Connection

    PB10 Dolby Digital or DTS (or Other Digital Surround Mode) Connection Use this installation method for Note: If your receiver or Make sure that you have Dolby Digital, DTS or other amplifier only has one configured your surround- digital surround processors:...

  • Page 10: Operation

    LEDs to turn subwoofer can be turned off, from green to red after the whenever desired. NOTE: Early versions of the PB10 did not have a main Power switch. Level Control The subwoofer Level Control subwoofer placement, type of...

  • Page 11: Troubleshooting

    • Make sure that you have that the subwoofer is configured your receiver/ plugged into an active processor so that the electrical outlet and switched subwoofer/LFE output is on. on.* *NOTE: Early versions of the PB10 did not have a main Power switch.

  • Page 12: Test Setup And Procedure

    2. Turn on generator, adjust to 100mV, 50Hz. 3. Plug in UUT; Turn Main Power switch ON (present on later version PB10 only). LED’s on the front panel may be either Red or Green. Turn VOLUME control full clockwise. Low Pass control should be set fully clockwise (150Hz).

  • Page 13: Service Bulletin Jbl 2001-03

    STANDBY mode. Power consumption is minimal in this mode. In the event you receive a PB10 or PB12 subwoofer with the complaint: “The unit will not switch to standby mode, even when the audio signal is removed” (indicated by the subwoofer’s green LED’s remaining on), perform the following modification: 1) Set the unit on a padded surface and remove all external cables.

  • Page 14: Service Bulletin Jbl 2001-04

    This may be a mechanical hum caused by the power transformer. Note that a slight hum, within design limits, may be noticeable in a very quiet room, when you are close to the unit. This is acceptable within the PB10/12’s product and price category to most customers, but not to others.
  • Page 15 #C only * Revision 1 of the PB10/12: Amplifier faceplate says “Made in Canada”; Amplifier serial number starts with “AM” Black (or silver) potted, non-serviceable S53/64AMI output module. PB10 only – No Power switch JBL Incorporated 250 Crossways Park Dr.
  • Page 16 26438-26439 26700 28250 30152-30288 25251-25252 25779-25791 26443 26702 28256 30290-30345 25256-25257 25793-25833 26451-26452 26706 28259 30347-30413 25261-25263 25835-25845 26457-26458 26708 28264-28267 30415-30490 25265-25267 25847-25850 26460-26462 26713-26716 28270-28271 30492-30524 JBL Incorporated 250 Crossways Park Dr. Woodbury, New York 11797 (516) 496-3400...

  • Page 17: Tech Tip Jbltt2003-04

    Do NOT mix & match these components from different manufacturers, or batches. They should be identical. * Late version PB10 or PB12 subwoofers (Revision 2 in the service manual) can be identified by: • Amplifier serial number starts with “HA”...

  • Page 18: Exploded View/Packaging

    7 & 8 Foam End Pad (Top & Bottom) 338132-001 Port tube Not For Sale 336804-001 Logo Badge 336485-001 336485-001 (IMAGE REDUCED) LED Ass’y for Logo Badge 338125-001 338125-001 Identification Of PB10 Revisions 1 and 2 can be found on Page 2.

  • Page 19: Amplifier Exploded View

    PB10 Amplifier Exploded View (Revision 1 Only) LEGEND Dual RCA jack 108324 Power Transformer 80135 Level Pot 40402 Low Pass Filter Pot 40707 Fuse Clips (2) 70323 1.25A SLO-BLO Fuse (3ag) 80114...

  • Page 20: Amplifier Faceplate/Access

    7 Strain Relief Plug 70305 061-314002-000 CAUTION 8 Power Cord 80105 083-041802-009 RISK OF ELECTRIC SHOCK DO NOT OPEN 9 Power Switch 074-020018-000 10 RCA Input jacks 108324 072-010007-000 Identification Of PB10 Revisions 1 and 2 can be found on Page 2.

  • Page 21: Integrated Circuit Diagrams

    (2) part# 60301S (screws) -15V -15V 00228 (2) part# 60301N (nuts) NOTE: THE PB10/12 REVISION 1 AMPLIFIER MUST ALWAYS BE TESTED WITH A WOOFER OR 4-OHM RESISTIVE LOAD. MPSA56, Q10, Q11 N-Chan JFET Q1 2N4401, Q12 LM324, TLO64, U1, U2...

  • Page 22: Testing Procedures

    PB10 Integrated Circuit Diagrams (Revision 2 Only) 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...
  • Page 23 PB10 PB10 Testing Procedure (Revision 1 Only) A. Power Amp Section Resistance from O/P of the module to GND should be >1M Ω (NO LOAD) Resistance Check Resistance from V+ of the module to V- of the module should read >4k Ω...
  • Page 24 PB10 PB10 Testing Procedure (Cont.) (Revision 1 Only) - Voltage measurements OP AMP SPEAKER U1(7) U2(7) U1(1) U2(1) U1(14) U2(14) U2(8) PU1(14) PU1(8) 180mV 266mV 325mV 404mV 451mV 451mV 1.33V 6.37V 5.72V 15.3V 2. High Level Input Sensitivity -Set up Turn level, Lo Pass Pot Fully CW and LFE switch off Set Generator at 1.09V@50Hz...
  • Page 25 PB10 PB10 Testing Procedure (Cont.) (Revision 1 Only) PB10 POWER MODULE TESTING FLOW CHART CAUTION : MODULE 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 SPK - and REFERENCE LEAD TO SPK+.
  • Page 26 PB10 PB10 Testing Procedure (Cont.) (Revision 2 Only) A. Power Amp Section Resistance from S+ (SPK O/P) to GND should be >1M Ω (NO LOAD) Resistance Check Resistance from V+ (C6 P+) to V- (C8 P-) gradually Fully CHARGED should read >10k Ω...
  • Page 27 PB10 PB10 Testing Procedure (Cont.) (Revision 2 Only) - Voltage measurements OP AMP SPEAKER U2(1) U2(14) U2(8) U3(7) U3(1) U3(14) U3(8) U5(7) U5(1) 133.6mV 200.2mV 245.9mV 314.8mV 314.9mV 350mV 1.67V 1.452V 2.098V 15.3V 2. High Level Input Sensitivity -Set up Turn level, X’OVER FREQ POT Fully CW and LFE switch off...
  • Page 28 PB10 PB10 Testing Procedure (Cont.) (Revision 2 Only) PB10 POWER MODULE TESTING FLOW CHART - REVISION 2 ONLY CAUTION : SPEAKER OUTPUT IS FLOATING AND IS NOT PROTECTED AGAINST A SHORT TO GROUND. ALL TEST INSTRUMENTS CONNECTED TO THE OUTPUT MUST BE FLOATING.

  • Page 29: Block Diagram Revision 2

    PB10 Block Diagram Revision 2 Only RevNo Revision note Date Signature Checked PHASE CTRL SPEAKER LEVEL SWITCH INPUT VOLUME CTRL DIF. AMP SUMMI NG AMP Variable Rout 18dB/Octave 12dB/Octave 12dB/Octave 12dB/Octave Lout Line Level SUMMI NG AMP LIMITER / Input...

  • Page 30: Electrical Parts List (Pcb Version 6.3 - 7.0)

    PB10 PB10 Electrical Parts List (Revision 1 Only) PB10 POWER AMP section of PCB Version 6.3. Part # Ref. Designator Description Semiconductors 60301 MODULE S53AMI amp module 60102 TLO64 Quad OpAmp 50100 BR RECT RS604 6AMP 50105 1N4744A 1w Zener...
  • Page 31 PB10 PB10 Electrical Parts List (Cont.) (Revision 1 Only) PB10 POWER AMP section of PCB Version 6.3. Part # Ref. Designator Description Resistors R100 NOT USED 40105 R10A 0.1 ohms 0.05 metal 40105 R10B 0.1 ohms 0.05 metal 40105 R10C 0.1 ohms...
  • Page 32 PB10 PB10 Electrical Parts List (Cont.) (Revision 1 Only) PB10 POWER AMP section of PCB Version 6.3. Part # Ref. Designator Description 40729 0.05 metal NOT USED Miscellaneous 80101 110uH Gapped E-core choke 80102 2.2uH 2.2uH ferrite bead 0-R Jumper...
  • Page 33 PB10 PB10 Electrical Parts List (Cont.) (Revision 1 Only) PB10 PREAMP section of PCB Version 6.3. Part # Ref. Designator Description 30101 220pF mono ceramic 30101 220p mono ceramic 30527 330nF 0.05 film 30527 330nF 0.05 film 30527 330nF 0.05...

  • Page 34: Electrical Parts List (Pcb Version 7.2)

    PB10 PB10 Electrical Parts List (Cont.) (Revision 1 Only) PB10 PREAMP section of PCB Version 7.2. Part # Designator Description Resistors metal SAFETY 40719 metal SAFETY 40719 metal SAFETY 40719 40719 metal SAFETY 40719 metal SAFETY 40719 metal SAFETY 40702 .25W...
  • Page 35 PB10 PB10 Electrical Parts List (Cont.) PB10 PREAMP section of PCB Version 7.2. Part # Designator Description Capacitors 4700uF +80 / -20 Electrolytic 105C SAFETY 30706 4700uF +80 / -20 Electrolytic 105C 30706 30502 100nF mono ceramic 30702 100nF mono ceramic...
  • Page 36 PB10 PB10 Electrical Parts List (Cont.) PB10 PREAMP section of PCB Version 7.2. Part # Designator Description 2.2uH 2.2uH ferrite bead 80102 0-R Jumper 0-R Jumper 80100 2m2H 5 Amp 2.2mH choke SAFETY 70323 3AG TYPE 3AG PC CLIP 2 PCB-mount fuse clips...
  • Page 37 PB10 PB10 Electrical Parts List (Cont.) PB10 PREAMP section of PCB Version 7.2. Part # Designator Description Capacitors Film Caps may be used in any position EXCEPT C1, C2 200uF BP Electrolytic 30707 200uF BP Electrolytic 30707 220pF mono ceramic...

  • Page 38: Electrical Parts List Revision 2

    PB10 PB10 Electrical Parts List (Cont.) Version 2 Only Part Number Description Reference designators Resistors 020-000498-120 Film Resistor 0 ohms 1/4W Jumper R10, 11 021-100401-120 MOF Resistor 1K 1W J R103 021-820303-020 MOF Resistor 820 ohms 3WS J R6, 9...
  • Page 39 PB10 PB10 Electrical Parts List (Cont.) Version 2 Only Part Number Description Reference designators 024-680598-120 SMD Resistor 68K 1/8W J R31, 33, 66 024-909498-100 SMD Resistor 9K09 1/8W F 026-200595-269 VR2 FREQUENCY POT RD163121R034-20KBx2(EJ) 026-500495-252 VR1 LEVEL POT RK163111R522-5KA (EJ)
  • Page 40 PB10 PB10 Electrical Parts List (Cont.) Version 2 Only Part Number Description Reference designators 054-001500-100 SMD Zener Diode 15V SOT-23 DZ23C15 D6, 7, 9 054-007200-100 SMD IC TL072CDR SO-8 (TI) U5, 6 DUAL OP-AMP 054-007400-100 SMD IC PN:TL074CDR (TI) U2, 3...

  • Page 41: Printed Circuit Boards (Pcb Version 6.3 - 7.0)

    PB10 (PCB version 6.3-7.0) (Revision 1 Only)
  • Page 42 PB10 (PCB version 6.3-7.0) (Revision 1 Only)
  • Page 43 PB10 (PCB version 6.3-7.0) (Cont.) (Revision 1 Only)

  • Page 44: Printed Circuit Boards (Pcb Version 6.4)

    PB10 (PCB version 6.4) Power Amp Only (Revision 1 Only)

  • Page 45: Printed Circuit Boards (Pcb Version 7.2)

    PB10 (PCB version 7.2) (Revision 1 Only)
  • Page 46 PB10 (PCB version 7.2) (Revision 1 Only)
  • Page 47 PB10 (PCB version 7.2) (Revision 1 Only)

  • Page 48: Preamp (Pcb Version 6.3-7.0)

    From PwrAmp LM324 To Pin 4 U1/U2 0r Jumper NOT USED From PwrAmp NOT USED NOT USED NOT USED Title B10 PREAMP (6.3pcb) 00232-17 Size Number Revision Tabloid Date: 20-Apr-2000 Sheet of File: T:\PB10 sch Folder\..\PB10 preamp Rev5.sch Drawn By: MS/LL...

  • Page 49: Power Amp (Pcb Version 6.3)

    3AG FUSE MCI4932 100nF AC Feed 1.25A SloBlo BR RECT 2m2H AC Return 100nF RS604 Title B10 PwrAmp (6.3 PCB) 00232-18 4700uF Size Number Revision 4700uF Date: 20-Apr-2000 Sheet of File: T:\PB10 sch Folder\..\PB10 pwramp Rev5.sch Drawn By: MA / LL...

  • Page 50: Power Amp (Pcb Version 7.0)

    PB10 Revision 1 Schematic Diagrams POWER AMP (PCB version 7.0) LED1/ 2 Pr eamp LED1/ 2 Pr eamp 1000 k SI GNAL LED & AUTO M UTE Not Used V+ LED LED Har ness 470K 1N4148 TLO64 R100 NOT USED...

  • Page 51: Preamp (Pcb Version 7.2)

    PB10 Revision 1 Schematic Diagrams PREAMP (PCB version 7.2)

  • Page 52: Power Amp (Pcb Version 7.2)

    PB10 Revision 1 Schematic Diagrams POWER AMP (PCB version 7.2)

  • Page 53: Schematics Version 2

    PB10 Revision 2 Schematic Diagrams PREAMP NOTE: THIS VOLTAGE IS REFERENCED TO -V, NOT CIRCUIT GROUND...
  • Page 54 NOTE: THIS VOLTAGE IS REFERENCED TO -V, NOT CIRCUIT GROUND NOTE: THIS VOLTAGE IS REFERENCED TO -V, NOT CIRCUIT GROUND...

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