JBL Media Sub Tehnical Manual
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JBL Media Sub Tehnical Manual

JBL Media Sub Tehnical Manual

Single 5.25" powered multimedia subwoofer
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See also: Owner's Manual , Technical Manual
Media Sub
Single 5.25" Powered Multimedia Subwoofer
TECHNICAL MANUAL
JBL Consumer Products Inc.
250 Crossways Park Dr.
Woodbury, N.Y. 11797
1-800-336-4JBL in the USA
A Harman International Company
Rev B
4/02

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Summary of Contents for JBL Media Sub

  • Page 1 Media Sub Single 5.25" Powered Multimedia Subwoofer TECHNICAL MANUAL JBL Consumer Products Inc. 250 Crossways Park Dr. Woodbury, N.Y. 11797 1-800-336-4JBL in the USA A Harman International Company Rev B 4/02...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS FEATURES..............1 PCB 3 (viewing trace layer through the board) ....7 SPECIFICATIONS............1 PCB 3 (viewing silk-screen through the board) ....8 MEDIA SUB EXPLODED VIEW ........2 ELECTRICAL PARTS LIST ...........9 DISASSEMBLY PROCEDURES ........3 PACKAGING EXPLODED VIEW.........11 BLOCK DIAGRAM ............4 INTEGRATED CIRCUIT DIAGRAMS ......12...

  • Page 3: Media Sub Exploded View

    MEDIA SUB EXPLODED VIEW...

  • Page 4: Disassembly Procedures

    Powered Subwoofer Media Sub DISASSEMBLY PROCEDURES Step 1 Remove the 8 purchase screws (S6) from the rear plate to separate the rear plate and the wood cabinet. Step 2 Unplug the connector speaker wire from the PCB amp assembly. Step 3 Remove the 4 purchase screws (S5) from the rear plate to separate the rear plate and cover.

  • Page 5: Block Diagram

    BLOCK DIAGRAM...

  • Page 6: Pcb 1 & 2 (Viewing Trace Layer Through The Board)

    Powered Subwoofer Media Sub PRINTED CIRCUIT BOARDS 1 & 2 (viewing trace layer through the board)

  • Page 7: Pcb 1 & 2 (Viewing Silk-Screen Through The Board)

    Powered Subwoofer Media Sub PRINTED CIRCUIT BOARDS 1 & 2 (viewing silk-screen through the board)

  • Page 8: Pcb 3 (Viewing Trace Layer Through The Board)

    Powered Subwoofer Media Sub PRINTED CIRCUIT BOARD 3 (viewing trace layer through the board)

  • Page 9: Pcb 3 (Viewing Silk-Screen Through The Board)

    Powered Subwoofer Media Sub PRINTED CIRCUIT BOARD 3 (viewing silk-screen through the board)

  • Page 10: Electrical Parts List

    Powered Subwoofer Media Sub MEDIA SUB ELECTRICAL PARTS LIST Part Number Description Qty Reference Designator Resistors QAF0250-331 RESISTOR 330 OHM 1/2W 5% CF R136 QAF0250-479 RESISTOR 4.7 OHM 1/2W 5% CF R137 QAF0450-100 RESISTOR 10 OHM 1/4W 5% CF R146...
  • Page 11 Powered Subwoofer Media Sub Part Number Description Qty Reference Designator PRM3737-273 COND MYLAR 0.027 uF 100V C104 C105 C106 C107 PRM3747-104 COND MYLAR 0.1 uF 100V C126 PRD3545-101 COND DISC pF 50V 10% Y5P C150 C151 PVE3954-332 COND ELECT 3300 uF 35V...

  • Page 13: Integrated Circuit Diagrams

    Powered Subwoofer Media Sub INTEGRATED CIRCUIT DIAGRAMS...
  • Page 14 Media Sub POWERED SUBWOOFER Media Sub Schematic Diagram Test voltages are printed in orange. Operational Mode voltages are displayed in boxes. Other voltages shown are for Stand-by Mode to the Auto On/Off function. +22.2V +22.4V IC103 0.0V 5.6V STK4024 II 5.6V...
  • Page 15 POWERED SUBWOOFER Media Sub Schemati 0.0V 5.6V 5.6V 5.6V 0.0V 5.6V 5.6V 5.61V 5.6V 5.6V 5.6V 5.6V 5.6V 5.6V 5.6V 5.6V 5.6V 5.6V 5.6V 5.6V 5.6V 5.6V 6.3V 7.25V 12.1V 4.8V 5.9V 1.36V 6.10V +11.0V 1.3V 2.47V 0.47V 2.48V 7.14V...

  • Page 16: Schematic Diagram

    Media Sub b Schematic Diagram Test voltages are printed in orange. Operational Mode voltages are displayed in boxes. Other voltages shown are for Stand-by Mode to the Auto On/Off function. +22.2V +22.4V IC103 STK4024 II 0.0V 0.0V 0.0V 0.0V 0.0V 0.0V...

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