JBL Studio S120PII Service Manual
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JBL Studio S120PII Service Manual

Studio series
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See also: Owner's Manual
™
Studio
Series
S120P
II
Powered Subwoofer
Service Manual
JBL Consumer Products
250 Crossways Park Dr.
Rev3 2/2006
Woodbury, New York 11797

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Summary of Contents for JBL Studio S120PII

  • Page 1 ™ Studio Series S120P Powered Subwoofer Service Manual JBL Consumer Products 250 Crossways Park Dr. Rev3 2/2006 Woodbury, New York 11797...

  • Page 2: Table Of Contents

    S120PII AMPLIFIER BLOCK DIAGRAM………………10 S120PII EXPLODED VIEW…………….……………...11 S120PII TEST SET UP AND PROCEDURE….……...12 S120PII ELECTRICAL PARTS LIST ..……….…….….13 P.C.B. DRAWINGS….……………………………...…….20 S120PII IC/TRANSISTOR PINOUTS..……..….…….….22 S120PII SCHEMATICS………..…………….……….….23 S120PII PACKAGE……………………………………...27 JBL S120PII SPECIFICATIONS Amplifier Power (RMS): Driver: Inputs: Outputs: Low-Pass Frequency: High-Pass Frequency: Frequency Response:...

  • Page 3: Detailed Specifications

    AC Power Applied Notes Normal Operation Normal operation, MOMS required Notes Bridge type amplifier, None of the speaker terminals must be connected to system GND at any time. Limiter prevents continuous power to exceed 220 Watts. Measured at the speaker cable. 200 Watts, measured at speaker output terminals located at the amp board.
  • Page 4 Watts @ nom. line voltage Watts @ nom. line voltage functional Direct short at output functional @1/8 max unclipped Power DC present at Speaker Out leads Amps Type-T or Slo Blo-250 V Amps Type-T or Slo Blo-250 V Notes AC Line cycled from OFF to ON...

  • Page 5: Connections

    Please look over the following three examples to determine which Dolby* Pro Logic* (Non-Digital) – Speaker Level Use this installation method for Dolby Pro Logic appli- cations (not Dolby Digital, ®...
  • Page 6 Line Level input ¶ on the subwoofer. It makes no difference which jack you choose. Connect each speaker to the corresponding speaker ¡ ™ £ PHASE AUTO NORMAL...

  • Page 7: Connection Dolby Digital Or Dts

    Subwoofer Output/LFE ™ BassQ Jacks The jacks marked “BassQ” § are for use with the JBL BassQ bass equalization module that will be released in the near future. The BassQ will enable you to optimize Note: If your receiver or...

  • Page 8: Operation

    S120PII Studio Series Power The S120P is equipped with both a master Power switch ‚ and an Auto turn-on/turn- off switch £. In order to function, the S120P be plugged into an active electrical outlet (but not an accessories outlet on another component of your audio system such as a receiver), and the master Power switch...

  • Page 9: Basic Troubleshooting

    If at some time in the future If there is low (or no) bass output: • Make sure the connections to the left and right “Speaker Inputs” • have the correct polarity (+ and –). • Make sure that the...

  • Page 10: Bulletin Jbl2003-06

    Care must be taken not to damage surrounding components, like large inductor pair L8. 4) Locate, remove D60 (RLS4148 diode); replace with a 3.6V zener diode, JBL Part# ZMM5227BCT-ND. When replacing D60 the polarity of the new (zener) diode should be reversed.

  • Page 11: S120Pii Amplifier Block Diagram

    S120PII Studio Series S120PII BLOCK DIAGRAM...

  • Page 12: S120Pii Exploded View

    S120P ™ Studio Series EXPLODED VIEW LED Indicator Assembly 335650-001 (4) Grille Retainers 333249-001 12" Woofer 338008-001 (8) Screws PB, HXS. #8 x .75" 903802-012 Front Grille 338007-001 Top Plate 337898-001 Top Plate Gasket 338012-001 (4) Rubber Foot Assembly 338037-001 Port Tube 337859-001 (12) Screws...

  • Page 13: S120Pii Test Set Up And Procedure

    6. Turn LEVEL control full Counterclockwise (Min). Turn power switch OFF. 7. Connect one pair of speaker cables to one set (either R or L) of the Speaker Input terminals on UUT. Cables should be connected to an integrated amplifier fed by the signal generator.

  • Page 14: S120Pii Electrical Parts List

    S120PII Studio Series S120PII ELECTRICAL PARTS LIST Part Number Description Amplifier PCB Resistors 021-100401-020 Metal oxide film resistor 021-620303-020 Metal oxide film resistor 022-005105-020 cement resistor 0024-00098-120 SMD resistor 024-100498-120 SMD resistor 024-100598-120 14 SMD resistor 024-100698-120 SMD resistor 024-130498-100 SMD resistor 024-160598-100 SMD resistor...
  • Page 15 S120PII Studio Series Part Number Description Semiconductors 051-000600-100 Transistor NPN 051-005600-100 Transistor NPN 051-290700-100 Transistor 051-540101-000 Transistor PNP 051-640000-100 MOSFET N-Channel 052-400080-000 Diode Bridge 053-257400-100 IC;DIP 8P LM2574 HVN-15V 0.5A Step-Down Voltage Regulator 054-000100-100 SMD DIODE 054-001002-100 SMD ZENER DIODE 054-001501-100 SMD ZENER DIODE 054-033904-100...
  • Page 16 S120PII Studio Series Part Number Description 024-100698-120 SMD resistor 024-110598-120 SMD resistor 024-200598-120 SMD resistor 024-220398-120 SMD resistor 024-220498-121 SMD resistor 024-220798-120 SMD resistor 024-270498-120 SMD resistor 024-390498-120 SMD resistor 024-390598-120 SMD resistor 024-470398-120 SMD resistor 024-470498-120 SMD resistor 024-470598-120 SMD resistor 024-470698-120 SMD resistor...
  • Page 17 S120PII Studio Series Part Number Description Miscellaneous 072-040229-000 Header, Right Angle 072-040230-000 Header, Right Angle Pre/Input PCB Resistors 021-121598-100 metal film resistor 021-121698-100 metal film resistor 021-301498-100 metal film resistor 021-680498-100 metal film resistor 024-000098-120 SMD resistor 024-100398-120 SMD resistor 024-100498-120 SMD resistor 024-100598-120...
  • Page 18 S120PII Studio Series Part Number Description 031-100343-100 SMD capacitor 031-100344-100 SMD capacitor 031-220244-101U 1 SMD capacitor 031-220344-100 SMD capacitor 031-470144-101 SMD capacitor 031-680144-100 SMD capacitor 033-200695-300 NP Electrolytic capacitor 034-100525-301 Electrolytic capacitor 034-220525-300 Electrolytic capacitor 034-220625-300 Electrolytic capacitor 038-100363-300 MPE capacitor P:5 038-150393-300 MPE capacitor 038-680393-300...
  • Page 19 S120PII Studio Series Part Number Description 074-030018-000 Toggle Switch Control Pot PCB 021-301498-100 metal film resistor 026-200595-269 VR 20Kx2 FREQ 026-500595-254 VR 50K LEVEL 038-100363-300 MPE capacitor P:5 072-040251-000 Header, Right Angle 072-040253-000 Header, Right Angle Fuse PCB 039-220180-100 X2 capacitor 0u22/250V 043-324300-000 Inductor 072-040064-000...
  • Page 20 Part Number Description 071-060280-500 nut washer 071-100606-060 flat washer 073-014044-000 Bracket 074-020018-000 Rocker Switch (Power) 082-022241-000 Wire #22 UL1007 082-072620-000 Wire #26 UL1007 086-021836-000 Double insulated cable 181-911600-158 Wire #16AWG UL1007 181-911622-148 Wire #16AWG UL1007 181-921600-000 BLKWire #16 UL1015 181-921699-000 WHT Wire #16 UL1015 LED Assy On the Cabinet 050-011700-000...

  • Page 21: Drawings

    S120PII Studio Series...
  • Page 22 S120PII Studio Series...

  • Page 23: S120Pii Ic/Transistor Pinouts

    S120PII Studio Series...

  • Page 24: S120Pii Schematics

    S120PII Studio Series...
  • Page 25 S120PII Studio Series...
  • Page 26 S120PII Studio Series...
  • Page 27 S120PII Studio Series Or part may be TL072CDR...

  • Page 28: S120Pii Package

    S120P Studio ™ Series PACKAGING...

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