Bose FreeSpace Business E4 II Series Service Manual
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Bose FreeSpace Business E4 II Series Service Manual

Digital signal processor and power amplifier
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®
FreeSpace
Business Music System
Model E4 Series II
Digital Signal Processor
and Power Amplifier
©2008 Bose Corporation
Service Manual
Reference Number 278977-SM Rev. 01
Electronic Copy Only

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Summary of Contents for Bose FreeSpace Business E4 II Series

  • Page 1 ® FreeSpace Business Music System Model E4 Series II Digital Signal Processor and Power Amplifier ©2008 Bose Corporation Service Manual Reference Number 278977-SM Rev. 01 Electronic Copy Only...

  • Page 2: Table Of Contents

    CONTENTS Contents .............................2 Safety Information ..........................3 Warranty .............................3 Product Description ..........................4 Specifications ..........................5-10 Electrostatic Discharge Sensitive (ESDS) Device Handling ............11 Part List Notes ..........................11 Amplifier Module Repair Information .................... 11 ® Packaging Part List, FreeSpace E4 Series II Business Music System (see Figure 1) ....12 Figure 1.

  • Page 3: Safety Information

    BY AN AUTHORIZED BOSE SERVICE CENTER OR OWNER OF THE BOSE PRODUCT, AND SHALL NOT BE REPRODUCED OR USED FOR ANY OTHER PURPOSE. WARRANTY The Bose E4 Series II Business Music System is covered by a limited 5-year transferable warranty.

  • Page 4: Product Description

    PRODUCT DESCRIPTION E-4 Series II Business Music System ® ® The Bose FreeSpace E-4 Series II Business Music System is an integrated four-channel digital signal processor and 400-Watt power amplifier for 70/100V business music applications. The E-4 chassis provides a total of four source inputs (two Line In, one Mic/Line and one Mic/ Line/Page) to meet the needs of most business music installations.

  • Page 5: Specifications

    SPECIFICATIONS Audio Input Source 1 unbalanced RCA, shell grounded through a 301 Ohm resistor Connectors: Source 2 unbalanced RCA, shell grounded through a 301 Ohm resistor Page balanced 4 pin Beau style: +, -, ground and contact closure in Aux/Mic/Line 3 pin Beau style, +, - and ground Mic 1-4 3 pin Beau style, +, - and ground Direct In...
  • Page 6 SPECIFICATIONS Line Input Source 1 and 2 Nominal Limits Conditions Source impedance: 200 Ohms 10 to 2k Ohm frequency response specification maintained with sources over this range Input impedance differential: +/> 50k Ohm +/-20% at 1 kHz CMRR referred to 80 dB >/= 74 dB at 1 kHz, 20 dB gain, 200 Ohm source...
  • Page 7 SPECIFICATIONS Page and Aux/Mic Inputs (continued) Nominal Limits Conditions CMRR referred 90 dB >/= 70 dB at 1 kHz, 60 dB gain, from source of nominal to output: 200 Ohms Input sensitivity for -60 dBV to +/-1 dB at 1 kHz codec FS: +17 dBV Gain, all settings:...
  • Page 8 SPECIFICATIONS Sense Mic inputs (continued) Nominal Limits Conditions Maximum input level: +10 dBV >/= 7 dBV THD+N </= 0.3%, 20-20 kHz, 0 dB gain THD+N: -84 dB </= -80 dB at +10 dBV output, 1 kHz, 60 dB gain Crosstalk at 1 kHz: -90 dB </= -80 dB Crossalk at 10 kHz:...
  • Page 9 SPECIFICATIONS Line Outputs (continued) Nominal Limits Conditions CMRR referred to output: 92 dB >/= 60 dB at 1 kHz, 20 dB gain, 200 Ohm source impedance Output noise: -90 dBV </= -85 dBV A-weighted, set for 0 dB gain THD+N: .001% .01% at +10 dBV output, 1 kHz, 20 dB gain...
  • Page 10 SPECIFICATIONS Power Amplifier Nominal Limits Conditions Power bandwidth: 30 Hz to 1% THD loaded at 25 Ohms 20 kHz Frequency response: 30 Hz to +/-3 dB output voltage of 10 Vrms over a load 20 kHz impedance of 12.5 Ohms to 1000 Ohms THD+N at 70.7 Vrms, .05% 30 Hz to 20 kHz, 25 Ohm load, A weighted...

  • Page 11: Electrostatic Discharge Sensitive (Esds) Device Handling

    EMI gasket. The entire amplifier assembly, including the heatsink, must be replaced. Refer to ® service bulletin 278977-B2, located in the back of this manual as well as on the Bose Service web sites at http://intranet.bose.com/tsg or http://serviceops.bose.com for more information.

  • Page 12: Packaging Part List, Freespace

    PACKAGING PART LIST FreeSpace ® E4 Series II Business Music System (see Figure 1) Item Description Part Number Qty. Note Number FS INSTALLER CD FOR E4 V2.000 279435-2000 BAG, POLY, 14.38 x 9.87 x 2mil 103351 FS E4 SERIES II OWNERS GUIDE 279145-001 FS E4 SERIES II QUICK START GUIDE 279146-001...

  • Page 13: Main Part List, Freespace E4 Series Ii Business Music System (See Figure 2)

    MAIN PART LIST ® FreeSpace E4 Series II Business Music System (see Figure 2) Item Description Part Number Qty. Note Number SCREW, 6-32x.312, TAPP, FLAT, XREC 198422-005 COVER, CHASSIS 259122 FAN, DC, 80 X 80 X 25, 24V, 35 CFM 260576-2435 NUT, HEX, 6-32, KEPS 100413-3...
  • Page 14 1 10x 4 5x 19 3x 26 3x 19 4x Note: Flash Memory PCB, 18E, is not shown. ® Figure 2. FreeSpace E4 Series II Business Music System Exploded View...

  • Page 15: Main Part List, E4 Series Ii Power Supply / Power Amplifier Pcb Module (See Figure 3)

    MAIN PART LIST E4 Series II Power Supply / Power Amplifier PCB Module (see Figure 3) Item Description Part Number Qty. Note Number INSULATOR, CER, AL OX, TO 247 260607 HEATSINK, AL, 4.84 X 3.4" 259112 SCREW, 6-32, PH, INT, SEM 181248-008 CLIP, MAX, HEAT XFER, AAVID, #23 260601-23...

  • Page 16: Electrical Part Lists

    ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Resistors Reference Description Part Number Note Designator R101 1.10K, 0805, 1/10W, 1% 133625-1101 R102 10.0K, 0805, 1/10W, 1% 133625-1002 R107 10 OHM, 2512, 1W, 5% 181895-10R0 R108 562 OHM, 0805, 1/10W, 1% 133625-5620 R109 562 OHM, 0805, 1/10W, 1%...
  • Page 17 ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Resistors (continued) Reference Description Part Number Note Designator R220 JUMPER, CHIP, 0805 133627 R226 20.0K, 0805, 1/10W, 1% 133625-2002 R227 22.1K, FILM, 0805, 1% 133625-2212 R228 30.1K, 0805, 1/10W, 1% 133625-3012 R229 49.9K, 0805, 1/10W, 1%...
  • Page 18 ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Resistors (continued) Reference Description Part Number Note Designator R290 49.9K, 0805, 1/10W, 1% 133625-4992 R291 15.0K, 0805, 1/10W, 1% 133625-1502 R292 15.0K, 0805, 1/10W, 1% 133625-1502 R293 22.1K, FILM, 0805, 1/10W, 1% 133625-2212 R296 1.10K, 0805, 1/10W, 1%...
  • Page 19 ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Resistors (continued) Reference Description Part Number Note Designator R502 182 OHM, 3ES, 0805, 1/10W, 1% 133625-1820 R503 5.11K, 0805, 1/10W, 1% 133625-5111 R504 7.87K, 0805, 1/10W, 1% 133625-7871 R505 1.27K, 0805, 1/10W, 1% 133625-1271 R506...
  • Page 20 ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Resistors (continued) Reference Description Part Number Note Designator R556 5.11K, 0805, 1/10W, 1% 133625-5111 R557 5.11K, 0805, 1/10W, 1% 133625-5111 R558 18.2K, 0805, 1/10W, 1% 133625-1822 R561 4.75K, 0805, 1/10W, 1% 133625-4751 R562 5.90K, 0805, 1/10W, 1%...
  • Page 21 ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Resistors (continued) Reference Description Part Number Note Designator R625 1.0M, 0805, 1/10W, 1% 133625-1004 R626 1.0M, 0805, 1/10W, 1% 133625-1004 R627 1.0M, 0805, 1/10W, 1% 133625-1004 R628 1.00K, 0805, 1/10W, 1% 133625-1001 R631 1.00K, 0805, 1/10W, 1%...
  • Page 22 ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Resistors (continued) Reference Description Part Number Note Designator R684 100K, 0805, 1/10W, 1% 133625-1003 R685 100K, 0805, 1/10W, 1% 133625-1003 R686 100K, 0805, 1/10W, 1% 133625-1003 R687 2.00K, 0805, 1/10W, 1% 133625-2001 R688 5.49K, 0805, 1/10W, 1%...
  • Page 23 ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Resistors (continued) Reference Description Part Number Note Designator R737 49.9K, 0805, 1/10W, 1% 133625-4992 R738 15.0K, 0805, 1/10W, 1% 133625-1502 R739 15.0K, 0805, 1/10W, 1% 133625-1502 R740 22.1K, FILM, 0805, 1/10W, 1% 133625-2212 R743 33.2K, 0805, 1/10W, 1%...
  • Page 24 ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Resistors (continued) Reference Description Part Number Note Designator R794 10.0K, 0805, 1/10W, 1% 133625-1002 RP400 4 X 10K ARRAY, SMT, .125W, 5% 195577-1034 RP401 4 X 10K ARRAY, SMT, .125W, 5% 195577-1034 RP402 4 X 10K ARRAY, SMT, .125W, 5%...
  • Page 25 ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Capacitors (continued) Reference Description Part Number Note Designator C225 .1uF, 0805, X7R, 25V, 10% 181264-104 C226 .1uF, 0805, X7R, 25V, 10% 181264-104 C228 .1uF, 0805, X7R, 25V, 10% 181264-104 C229 1500pF, 0805, COG, 50V, 5% 133622-152...
  • Page 26 ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Capacitors (continued) Reference Description Part Number Note Designator C281 10uF, EL, 85C, 25V, 20% 177902-100E C282 10uF, EL, 85C, 25V, 20% 177902-100E C283 2.2uF, EL, SMD, 85C, 35V, 20% 177902-2R2V C284 2.2uF, EL, SMD, 85C, 35V, 20%...
  • Page 27 ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Capacitors (continued) Reference Description Part Number Note Designator C516 2.2uF, EL, SMD, 85C, 35V, 20% 177902-2R2V C517 4.7MFD, EL, 85C, 25V, 20% 177902-4R7E C518 .1uF, 0805, X7R, 25V, 10% 181264-104 C519 68pF, 0805, COG, 50V, 5%...
  • Page 28 ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Capacitors (continued) Reference Description Part Number Note Designator C573 .1uF, 0805, X7R, 25V, 10% 181264-104 C575 .1uF, 0805, X7R, 25V, 10% 181264-104 C576 .1uF, 0805, X7R, 25V, 10% 181264-104 C577 .1uF, 0805, X7R, 25V, 10% 181264-104...
  • Page 29 ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Capacitors (continued) Reference Description Part Number Note Designator C634 .1uF, 0805, X7R, 25V, 10% 181264-104 C635 .1uF, 0805, X7R, 25V, 10% 181264-104 C636 .1uF, 0805, X7R, 25V, 10% 181264-104 C637 .1uF, 0805, X7R, 25V, 10% 181264-104...
  • Page 30 ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Capacitors (continued) Reference Description Part Number Note Designator C680 .1uF, 0805, X7R, 25V, 10% 181264-104 C681 .01uF, 0805, X7R, 50V, 10% 133623-103 C682 .1uF, 0805, X7R, 25V, 10% 181264-104 C683 .1uF, 0805, X7R, 25V, 10% 181264-104...
  • Page 31 ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Capacitors (continued) Reference Description Part Number Note Designator C726 100uF, EL, SMD, 105C, 25V, 20% 255071-101E C727 .1uF, 0805, X7R, 25V, 10% 181264-104 C728 .1uF, 0805, X7R, 25V, 10% 181264-104 C729 3300pF, 0805, X7R, 50V, 10%...
  • Page 32 ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Diodes Reference Description Part Number Note Designator D102 SOD123, 1N4148W 257662 D103 SMT, S1A 178380-1 D104 LED, RGY, VERT, RECT, PCB MT 260616-001 D105 LED, RGY, VERT, RECT, PCB MT 260616-001 D106 LED, RGY, VERT, RECT, PCB MT...
  • Page 33 ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Diodes (continued) Reference Description Part Number Note Designator D534 SHOTTKY, BAT42W, SOD-123 196984-002 D535 SOD123, 1N4148W 257662 D536 BAV99, SOT23 147239 D537 BAV99, SOT23 147239 D538 BAV99, SOT23 147239 D539 BAV99, SOT23 147239...
  • Page 34 ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Integrated Circuits (continued) Reference Description Part Number Note Designator U401 VOLT REG, SMD, POS, SOT89, +5V 258167-05 U402 SHIFT REG W/LTCH, 8 BT, 74HC595 258171 U403 SHIFT REG W/LTCH, 8 BT, 74HC595 258171 U404 SHIFT REG, 8 BIT, 74HC166, SOIC...
  • Page 35 ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Integrated Circuits (continued) Reference Description Part Number Note Designator U547 VOLT REG, POS, D2PAK, LD1086, 5.0V 260638-50 U548 VOLT REG, POS, D2PAK, 7815, 15V 260689-15 U549 VOLT REG, NEG, D2PAK, 7915, -15 260687-15 U550 VOLT REG, POS, D2PAK, LD1086, 3.3V...
  • Page 36 ELECTRICAL PART LIST Digital Signal Processor / User Interface PCB Assembly Miscellaneous (continued) Reference Description Part Number Note Designator JR101 CONN, USB, B TYPE, PCB MT, THRU HOL 260623 JR401 JACK, MODULAR, DUAL RJ45, PCB MT 260625 JR402 JACK, MODULAR, DUAL RJ45, PCB MT 260625 P501 HEADER, MALE, X2, VERT, .1SP, 14 PIN...

  • Page 37: E4 Series Ii Power Supply / Power Amplifier Pcb Assembly

    ELECTRICAL PART LIST E4 Series II Power Supply / Power Amplifier PCB Assembly Resistors Reference Description Part Number Note Designator 220 OHM, 2512, 1W, 5% 181895-2200 2.00K, 0805, 1/10W, 1% 133625-2001 4.99K, 0805, 1/10W, 1% 133625-4991 4.99K, 0805, 1/10W, 1% 133625-4991 4.99K, 0805, 1/10W, 1% 133625-4991...
  • Page 38 ELECTRICAL PART LIST E4 Series II Power Supply / Power Amplifier PCB Assembly Resistors (continued) Reference Description Part Number Note Designator 20.0K, 2512, 1W, 5% 181895-2002 20.0K, 2512, 1W, 5% 181895-2002 1.00K, 0805, 1/10W, 1% 133625-1001 10.0K, 0805, 1/10W, 1% 133625-1002 10.0K, 0805, 1/10W, 1% 133625-1002...
  • Page 39 ELECTRICAL PART LIST E4 Series II Power Supply / Power Amplifier PCB Assembly Resistors (continued) Reference Description Part Number Note Designator 33 OHM, 2512, 1W, 5% 181895-33R0 33 OHM, 2512, 1W, 5% 181895-33R0 33 OHM, 2512, 1W, 5% 181895-33R0 1.0M, 0805, 1/10W, 1% 133625-1004 1.0M, 0805, 1/10W, 1% 133625-1004...
  • Page 40 ELECTRICAL PART LIST E4 Series II Power Supply / Power Amplifier PCB Assembly Resistors (continued) Reference Description Part Number Note Designator R139 20.0K, 2512, 1W, 5% 181895-2002 R140 1.00K, 0805, 1/10W, 1% 133625-1001 R141 1.00K, 0805, 1/10W, 1% 133625-1001 R142 10.0K, 0805, 1/10W, 1% 133625-1002 R143...
  • Page 41 ELECTRICAL PART LIST E4 Series II Power Supply / Power Amplifier PCB Assembly Resistors (continued) Reference Description Part Number Note Designator R185 33 OHM, 2512, 1W, 5% 181895-33R0 R186 33 OHM, 2512, 1W, 5% 181895-33R0 R187 33 OHM, 2512, 1W, 5% 181895-33R0 R188 1.0M, 0805, 1/10W, 1%...
  • Page 42 ELECTRICAL PART LIST E4 Series II Power Supply / Power Amplifier PCB Assembly Resistors (continued) Reference Description Part Number Note Designator R231 100K, 0805, 1/10W, 1% 133625-1003 R232 200K, 0805, 1/10W, 1% 133625-2003 R233 100K, 0805, 1/10W, 1% 133625-1003 R234 200K, 0805, 1/10W, 1% 133625-2003 R235...
  • Page 43 ELECTRICAL PART LIST E4 Series II Power Supply / Power Amplifier PCB Assembly Capacitors Reference Description Part Number Note Designator 1500uF, EL, AL, 250V, 4T 260693-1522E 1500uF, EL, AL, 250V, 4T 260693-1522E 1500uF, EL, AL, 250V, 4T 260693-1522E 1500uF, EL, AL, 250V, 4T 260693-1522E 10uF, EL, 85C, 35V, 20% 177902-100V...
  • Page 44 ELECTRICAL PART LIST E4 Series II Power Supply / Power Amplifier PCB Assembly Capacitors (continued) Reference Description Part Number Note Designator 1000pF, 1206, 630V, 10% 260697-102 1000pF, 1206, 630V, 10% 260697-102 1000pF, 1206, 630V, 10% 260697-102 1000pF, 1206, 630V, 10% 260697-102 .1MFD, 1210, Z5U, 200V, 10% 260696-104K...
  • Page 45 ELECTRICAL PART LIST E4 Series II Power Supply / Power Amplifier PCB Assembly Capacitors (continued) Reference Description Part Number Note Designator .22uF, MET POLY PRO, 400V, 5% 260546-224CJ 22pF, 0805, COG, 50V, 5% 133622-220 33pF, 0805, COG, 50V, 5% 133622-330 1000pF, 1206, 630V, 10% 260697-102 1000pF, 1206, 630V, 10%...
  • Page 46 ELECTRICAL PART LIST E4 Series II Power Supply / Power Amplifier PCB Assembly Capacitors (continued) Reference Description Part Number Note Designator C141 0.1uF, 0805, X7R, 50V 133623-104 C142 0.1uF, 0805, X7R, 50V 133623-104 C143 0.1uF, 0805, X7R, 50V 133623-104 C144 0.1uF, 0805, X7R, 50V 133623-104 C145...
  • Page 47 ELECTRICAL PART LIST E4 Series II Power Supply / Power Amplifier PCB Assembly Diodes (continued) Reference Description Part Number Note Designator FAST REC, 400V, SMB 260672 FAST REC, 400V, SMB 260672 FAST REC, 400V, SMB 260672 FAST REC, 400V, SMB 260672 BAV99, SOT23 147239...
  • Page 48 ELECTRICAL PART LIST E4 Series II Power Supply / Power Amplifier PCB Assembly Diodes (continued) Reference Description Part Number Note Designator ZEN, SOD-123, .5W, 5%, 4.3V 174265-5229 SMT, S1A 178380-1 SMT, S1A 178380-1 SOD123, 1N4148W 257662 SOD123, 1N4148W 257662 SMT, S1A 178380-1 SMT, S1A 178380-1...
  • Page 49 ELECTRICAL PART LIST E4 Series II Power Supply / Power Amplifier PCB Assembly Transistors (continued) Reference Description Part Number Note Designator PWR MOSFT, 400V, N, TO247 260675 P, 300V, MMBT92, SOT23 260587-1 P, 300V, MMBT92, SOT23 260587-1 P, 300V, MMBT92, SOT23 260587-1 N, 300V, MMBT42, SOT23 260588-1...
  • Page 50 ELECTRICAL PART LIST E4 Series II Power Supply / Power Amplifier PCB Assembly Miscellaneous Reference Description Part Number Note Designator BBM1L JUMPER, CHIP 124896 BBM2L JUMPER, CHIP 124896 BBM3L JUMPER, CHIP 124896 BBM4L JUMPER, CHIP 124896 BKT1 SCREW TERM, PCB HORIZ, 6-32 187504 BKT2 SCREW TERM, PCB HORIZ, 6-32...
  • Page 51 ELECTRICAL PART LIST E4 Series II Power Supply / Power Amplifier PCB Assembly Miscellaneous (continued) Reference Description Part Number Note Designator CONN, PLUG, 5.08MM SP, WEID, 2P 260620-02 CONN, PLUG, 5.08MM SP, WEID, 2P 260620-02 CONN, PLUG, 5.08MM SP, WEID, 2P 260620-02 SWITCH, DPDT, 5A, RT ANGLE, SLIDE 187480...

  • Page 52: Freespace 4400 Power Supply / Power Amplifier Pcb Assembly

    ELECTRICAL PART LIST FreeSpace ® 4400 Power Supply / Power Amplifier PCB Assembly Resistors Reference Description Vendor Part Note Designator Number BBM5 0 OHM, RMG, 1206, 1/8W, 1% 4721-000J+6 BBM6 0 OHM, RMG, 1206, 1/8W, 1% 4721-000J+6 BBM7 0 OHM, RMG, 1206, 1/8W, 1% 4721-000J+6 BBM8 0 OHM, RMG, 1206, 1/8W, 1%...
  • Page 53 ELECTRICAL PART LIST FreeSpace ® 4400 Power Supply / Power Amplifier PCB Assembly Resistors (continued) Reference Description Vendor Part Note Designator Number 20K, RMG, 2512, 1W, 5% 4728-203J+3 20K, RMG, 2512, 1W, 5% 4728-203J+3 1K, RMG, 0805, 1/10W, 1% 4720-102A+J 10K, RMG, 0805, 1/10W, 1% 4720-103A+J 10K, RMG, 0805, 1/10W, 1%...
  • Page 54 ELECTRICAL PART LIST FreeSpace ® 4400 Power Supply / Power Amplifier PCB Assembly Resistors (continued) Reference Description Vendor Part Note Designator Number 301K, RMG, 0805, 1/10W, 1% 4720-3013+J 5.1 OHM, RMG, 2512, 1W, 5% 4728-5R1J+3 R100 499K, RMG, 0805, 1/10W, 1% 4720-4993+J R102 100K, RMG, 0805, 1/10W, 1%...
  • Page 55 ELECTRICAL PART LIST FreeSpace ® 4400 Power Supply / Power Amplifier PCB Assembly Resistors (continued) Reference Description Vendor Part Note Designator Number R148 4.99K, RMG, 0805, 1/10W, 1% 4720-4991+J R149 2K, RMG, 0805, 1/10W, 1% 4720-202A+J R150 100K, RMG, 0805, 1/10W, 1% 4720-104A+J R151 100K, RMG, 0805, 1/10W, 1%...
  • Page 56 ELECTRICAL PART LIST FreeSpace ® 4400 Power Supply / Power Amplifier PCB Assembly Resistors (continued) Reference Description Vendor Part Note Designator Number R200 34.8K, RMG, 0805, 1/10W, 1% 4720-3482+J R201 34.8K, RMG, 0805, 1/10W, 1% 4720-3482+J R202 39.2K, RMG, 2512, 1W, 1% 4728-3922+3 R203 39.2K, RMG, 2512, 1W, 1%...
  • Page 57 ELECTRICAL PART LIST FreeSpace ® 4400 Power Supply / Power Amplifier PCB Assembly Resistors (continued) Reference Description Vendor Part Note Designator Number R246 20 OHM, RWR, 5W, 5%, RL 474B-200J+5 R247 20 OHM, RWR, 5W, 5%, RL 474B-200J+5 R248 20 OHM, RWR, 5W, 5%, RL 474B-200J+5 R249 1K, RMG, 0805, 1/10W, 1%...
  • Page 58 ELECTRICAL PART LIST FreeSpace ® 4400 Power Supply / Power Amplifier PCB Assembly Resistors (continued) Reference Description Vendor Part Note Designator Number R394 5.1 OHM, RMG, 2512, 1W, 5% 4728-5R1J+3 R395 5.1 OHM, RMG, 2512, 1W, 5% 4728-5R1J+3 R396 5.1 OHM, RMG, 2512, 1W, 5% 4728-5R1J+3 R397 5.1 OHM, RMG, 2512, 1W, 5%...
  • Page 59 ELECTRICAL PART LIST FreeSpace ® 4400 Power Supply / Power Amplifier PCB Assembly Capacitors (continued) Reference Description Vendor Part Note Designator Number 1000pF, CC, 0805, 50V, 5%, 1.25X2.0 150F-102J+J-BDM 0.1uF, CC, 0805, 50V, 10%, 1.2X2.0 150F-104K+J-BD 0.1uF, CC, 0805, 50V, 10%, 1.2X2.0 150F-104K+J-BD 1000pF, CC, 0805, 50V, 5%, 1.25X2.0 150F-102J+J-BDM...
  • Page 60 ELECTRICAL PART LIST FreeSpace ® 4400 Power Supply / Power Amplifier PCB Assembly Capacitors (continued) Reference Description Vendor Part Note Designator Number 1000pF, CC, 1206, 630V, 10% 150M-102K+6-CF 1000pF, CC, 1206, 630V, 10% 150M-102K+6-CF 1000pF, CC, 1206, 630V, 10% 150M-102K+6-CF 0.1uF, CC, 1206, X7R, 250V, 10%, 1.6X3.2 150R-104K+6-CF 0.1uF, CC, 1206, X7R, 250V, 10%, 1.6X3.2...
  • Page 61 ELECTRICAL PART LIST FreeSpace ® 4400 Power Supply / Power Amplifier PCB Assembly Capacitors (continued) Reference Description Vendor Part Note Designator Number 0.47uF, CM, 250V, 5%, RL18X14, MKP4, 153R-474J+5-71J 0.47/5/250VDC, WIMA 0.22uF, CM, 400V, 5%, RL18X14, MKP4, 153T-224J+5-71J 0.22/5/400VDC, WIMA 0.47uF, CM, 250V, 5%, RL18X14, MKP4, 153R-474J+5-71J 0.47/5/250VDC, WIMA...
  • Page 62 ELECTRICAL PART LIST FreeSpace ® 4400 Power Supply / Power Amplifier PCB Assembly Capacitors (continued) Reference Description Vendor Part Note Designator Number C143 0.1uF, CC, 0805, 50V, 10%, 1.2X2.0 150F-104K+J-BD C144 0.1uF, CC, 0805, 50V, 10%, 1.2X2.0 150F-104K+J-BD C145 1uF, CE, 50V, 20%, 4X5.5, SMD, 157F-105M+3-GJC UWP1H010MCR1GB, NCC C146...
  • Page 63 ELECTRICAL PART LIST FreeSpace ® 4400 Power Supply / Power Amplifier PCB Assembly Capacitors (continued) Reference Description Vendor Part Note Designator Number C406 0.1uF, CC, 1206, X7R, 250V, 10%, 1.6X3.2 150R-104K+6-CF C407 0.1uF, CC, 1206, X7R, 250V, 10%, 1.6X3.2 150R-104K+6-CF C408 0.1uF, CC, 0805, 50V, 10%, 1.2X2.0 150F-104K+J-BD...
  • Page 64 ELECTRICAL PART LIST FreeSpace ® 4400 Power Supply / Power Amplifier PCB Assembly Diodes Reference Description Vendor Part Note Designator Number DIODE BRIDGE, 600V, 8A, GBU8J, RL 4840-9211+5 ZEN, 1/2W, 5V1, MMSZ5231B, SOD-123, SMD 4837-5V18+3 SCHOTTKY, SK16, DO-214AA, 60V, 1A, SMD 480S-K160+3 SCHOTTKY, SK16, DO-214AA, 60V, 1A, SMD 480S-K160+3...
  • Page 65 ELECTRICAL PART LIST FreeSpace ® 4400 Power Supply / Power Amplifier PCB Assembly Diodes (continued) Reference Description Vendor Part Note Designator Number BAV99, SOT23, PHILIPS 4840-8970+3 BAV99, SOT23, PHILIPS 4840-8970+3 BAV99, SOT23, PHILIPS 4840-8970+3 BAV99, SOT23, PHILIPS 4840-8970+3 BAV99, SOT23, PHILIPS 4840-8970+3 BAV99, SOT23, PHILIPS 4840-8970+3...
  • Page 66 ELECTRICAL PART LIST FreeSpace ® 4400 Power Supply / Power Amplifier PCB Assembly Diodes (continued) Reference Description Vendor Part Note Designator Number D114 L-115W, EGW/209EGW, RED/GR, ELE-LED02 3700-4536+RG D400 SCHOTTKY DBL DIODE, BAT54S, SOT-23 480T-54S0+3 D401 SCHOTTKY DBL DIODE, BAT54S, SOT-23 480T-54S0+3 D402 SCHOTTKY DBL DIODE, BAT54S, SOT-23...
  • Page 67 ELECTRICAL PART LIST FreeSpace ® 4400 Power Supply / Power Amplifier PCB Assembly Integrated Circuits Reference Description Vendor Part Note Designator Number J-FET DUAL OP AMP, TL072BC, SO8, ST 3132-3951+0 J-FET DUAL OP AMP, TL072BC, SO8, ST 3132-3951+0 J-FET DUAL OP AMP, TL072BC, SO8, ST 3132-3951+0 J-FET DUAL OP AMP, TL072BC, SO8, ST 3132-3951+0...
  • Page 68 3, 4 ® (BOSE PART NUMBER 177311-06300) FUSE, SLO-BLO, T6.3A, 250V, 5X20, UL 5120-0040+0 3, 4 (BOSE PART NUMBER 177311-06300) FUSE, SLO-BLO, T6.3A, 250V, 5X20, UL 5120-0040+0 3, 4 (BOSE PART NUMBER 177311-06300) FUSE, SLO-BLO, T6.3A, 250V, 5X20, UL 5120-0040+0...
  • Page 69 ELECTRICAL PART LIST FreeSpace ® 4400 Power Supply / Power Amplifier PCB Assembly Miscellaneous (continued) Reference Description Vendor Part Note Designator Number PL12 WAFER, 4P, P3.96, STRAIGHT, MALE 2101-3053+0 PL13 WAFER, 4P, P3.96, STRAIGHT, MALE 2101-3053+0 PLUG 2P P5.08 R-ANGLE BLL5.08/90/2 B BK, 2113-3168+0 WEIDMULLER PLUG 2P P5.08 R-ANGLE BLL5.08/90/2 B BK,...

  • Page 70: Freespace 4400 Power Amplifier Driver Pcb Assembly

    ELECTRICAL PART LIST FreeSpace ® 4400 Power Amplifier Driver PCB Assembly Resistors Reference Description Vendor Part Note Designator Number 8.25K, RMG, 1/10W, 1%, 0805 4720-8251+J 5.76M, RMG, 1/10W, 1%, 0805 4720-5764+J 1.91M, RMG, 1/10W, 1%, 0805 4720-1914+J 1.91M, RMG, 1/10W, 1%, 0805 4720-1914+J 1.91M, RMG, 1/10W, 1%, 0805 4720-1914+J...
  • Page 71 ELECTRICAL PART LIST FreeSpace ® 4400 Power Amplifier Driver PCB Assembly Capacitors Reference Description Vendor Part Note Designator Number 0.1uF, CC, 50V, 5%, 0603 150F-104J+P-AC 0.1uF, CC, 50V, 5%, 0603 150F-104J+P-AC 1000pF, CC, 50V, 5%, 0603, X7R 150F-102J+P-AC 1000pF, CC, 50V, 5%, 0603, X7R 150F-102J+P-AC 1000pF, CC, 0603, X7R, 50V, 5% 1000pF, CC, 0603, X7R, 50V, 5%...
  • Page 72 ELECTRICAL PART LIST FreeSpace ® 4400 Power Amplifier Driver PCB Assembly Transistors Reference Description Vendor Part Note Designator Number PNP, FMMT558, SOT-23, SMD, ZETEX 485T-5580+3 PNP, FMMT558, SOT-23, SMD, ZETEX 485T-5580+3 PNP, FMMT558, SOT-23, SMD, ZETEX 485T-5580+3 PNP, FMMT558, SOT-23, SMD, ZETEX 485T-5580+3 PNP, FMMT558, SOT-23, SMD, ZETEX 485T-5580+3...

  • Page 73: Disassembly Procedures

    DISASSEMBLY PROCEDURES Note: Refer to Figure 2 for the following 4.2 Remove the six screws (18) that secure procedures. the DSP/User Interface (19C), Wall Plate Sense PCB (19B) and the Auto Volume PCB 1. Top Cover Removal (19A) to the rear panel. 1.1 Remove the ten screws (1) that secure 4.3 Remove the two standoffs (17) that the top cover (2) to the chassis (9).
  • Page 74 DISASSEMBLY PROCEDURES 5.6 Slide the heatsink/PCB assembly for- with pliers in order to lift off the PCB. Try to ward while lifting the front of the PCB up leave the ceramic insulators stuck to the slightly. heatsink in their original positions if possible as this will aid re-assembly.

  • Page 75: Test Procedure Setup

    The amplifier will be put into a known state for test by first updating the unit’s microcode using the Bose Installer program. This resets the unit, sets the EQ’s and gains to the proper levels and maps the Zone 1 input to Zones 1 – 4 at the outputs. Once that is completed, the unit will need to be configured so that Zone 1 input is mapped to the Zone 1 amplifier output, Zone 2 to Zone 2, etc.
  • Page 76 ® THE FREESPACE INSTALLER™ FRONT PANEL When your PC is connected to the E-4 system, the hardware panel in the Set Up Hardware mode displays the system’s front panel. Selecting one of the internal hardware functions (gray background) displays the controls in the control pane.

  • Page 77: Test Procedures

    Note: The E4 Series II ships with the Installer software CD included in the carton. If you do not have access to the software CD, you can download this software from the Bose Professional Products web site at http://www.pro.bose.com. Click on Products, scroll down to the Discontin- ued Products link and click on it.
  • Page 78 TEST PROCEDURE 3.2 Short the eight pins of the connector together and measure the DC voltage. Verify that it is in accordance with the table below. Measure Reference Value pins Value pins shorted Designator open Wallplate 1 J401A Pin 1 5 VDC +/-5% 4.2 ~ 4.6 VDC +/-5% Wallplate 2...
  • Page 79 TEST PROCEDURE 6. Verify Sequence Output Test This test checks the Sequence DC voltage level on the Zone 4 Line Out jack. This voltage is used to turn on remote amplifiers such as the Bose ® Model 1600/1800VI amplifiers. 6.1 Ensure that the unit in STANDBY with AC mains power applied and that the Power ON/OFF switch on the rear panel is in the ON position.
  • Page 80 This will tell the repair technician whether or not he needs to update the code before returning the unit. ® 10.1 Launch the Bose Installer software, if not already open. Click on the “Service Hardware” tab and read the installed code revision levels for: Host Microcode, DSP code, Peripheral PIC code, Lower Amplifier PIC code, &...

  • Page 81: Troubleshooting

    TROUBLESHOOTING This section provides troubleshooting guide- To determine the severity of the error, cycle lines to use for solving problems you may the unit’s power off and back on again. If the encounter servicing the E4 Series II sys- SYSTEM STATUS indicator is now off, the tems.
  • Page 82 TROUBLESHOOTING Amplifier fault AMP OUTPUT indicators are red The AMP OUTPUT LEDs work in pairs (1 and 2, 3 and 4) and indicate the operating • Check the number of loudspeak- ers connected to the E4 unit. status of the four amplifier output channels. Verify that the total sum of loud- Has the E4 unit speaker taps connected to the...
  • Page 83 TROUBLESHOOTING No STANDBY and SYSTEM Indicators Input clipping STANDY & SYSTEM LEDs If clipping is occurring at the input of an are off - AC power is on amplifier channel, the source LED will blink red. AMP OUTPUTS SYSTEM Is E4 unit Plug the E4 unit into an AC STATUS plugged into an...
  • Page 84 A flash failure will example. cause the message, “Power-on self test incomplete” to appear in the host controller Hardware Bose FreeSpace E4 Series II Error Log flash test section. ® version ------------------------------------------------- numbers Microcontroller: v1.0.0.64...
  • Page 85 TROUBLESHOOTING Amplifier alarms Operating Mode: The current setting of the output voltage select switch, 70V or 100V. Each amplifier section monitors its own Amplifier alarms – using output voltage and operation and performance. If a fault condi- current tion occurs, it is reported in the Amplifier Alarm section of the Error Log.
  • Page 86 TROUBLESHOOTING Amplifier alarms – input and output AC Power Fault: Might be an AC line dropout status or severe brownout, or simply AC power turned off without first placing the E4 Series The Input and Output Status sections display II in standby mode. You can check that the the fault condition which caused the alarm power has been removed from the unit, or and the current status of the amplifier output.
  • Page 87 TROUBLESHOOTING Retry Fault: The amplifier has tried to start up or recover from a fault condition at least six times. When this occurs, you will need to place the E4 Series II system in standby and then press the STANDBY button again to clear the fault, at which time the system will again try to start up.
  • Page 88 TROUBLESHOOTING No audio in zone (continued) User interface keypads do not operate correctly No audio in zone. • Check wiring of RJ-45 connectors. • Check for breaks/shorts in cable. • Make sure that the audio sources • Using the E4 Series II Installer™ software, are connected to the E4 LINE in- check the Error Log for a peripheral control- puts and that there is an input sig-...
  • Page 89 TROUBLESHOOTING Bad sound in a zone Auto Volume does not calibrate Auto Volume calibration may fail if the Bad sound process cannot obtain an adequate source level. This may be due to: Verify that the correct Speaker EQ is selected in the Installer™ soft- •...

  • Page 90: Theory Of Operation

    THEORY OF OPERATION Power Supply / Amplifier PCB Overview CAUTION: There are dangerous voltages present on most of the power supply and amplifier circuitry. Under normal conditions, it can take 5 to 10 minutes after power is removed for these voltages to discharge to a safe level.
  • Page 91 The E-4 Series II power amplifier section employs a number of protective devices and commu- nication circuits to ensure continued reliable operation, and to enable reporting and logging of any fault conditions. In addition, there are several measurement circuits, whose primary purpose is to provide information to Bose ® FreeSpace ®...
  • Page 92 THEORY OF OPERATION The Tripath’s modulation pattern has a no-signal center frequency of about 700 kHz. The switching frequency varies downward as the signal level increases, reaching about 100 kHz just before clipping. Near clipping, the switching pattern is further adjusted to provide soft clipping behavior.
  • Page 93 To provide repeatable, reliable measurements, the time constant of all these averages is approximately 100 mSec. ® ® Bose FreeSpace Installer™ software uses these measurements to calculate answers to questions , such as; “Is the amplifier set up and running properly, and providing adequate output voltage?”...
  • Page 94 THEORY OF OPERATION Amplifier Operating States (continued) The order is pin 4 = MSB, pin 6 = LSB. For example, if pins 4, 5 and 6 measured high (+5V), high (+5V), low (0V), you would be in state 6. Some of the states are transitioned through so quickly that you would need a storage scope to verify operation in that state (ex.: state 4).
  • Page 95 THEORY OF OPERATION 2. DSP Board Digital power on the DSP board is regulated by a 5 volt (U547) and a 3.3 volt (U550) voltage regulator. The analog section of the board, running from plus and minus 15 volts (U548) (U549), and 5 volts (U551), is powered only when the system is not in standby.
  • Page 96 THEORY OF OPERATION The analog section of the DSP board contains the two stereo codecs (U503, U507) and their associated analog input and output circuitry. Line 1 and 2 each have two inputs that are resis- tively mixed and buffered through difference amplifiers (U529, U532). Each of the difference amplifiers feed a channel of the volume control (U531) that in turn drives the two dual op-amps (U501, U504) that convert the single ended signals to differential drive for the codec.
  • Page 97 THEORY OF OPERATION Each mic sense path consists of input protection circuitry and a resistor to the 8V supply fol- lowed by a 330uF DC blocking capacitor, input protection diodes to the plus and minus 15V rails and an op-amp serving as an input gain stage of 37dB. The output of the op-amp passes through another DC blocking cap to ½...

  • Page 98: Accessories

    ACCESSORIES FreeSpace E4-II System Accessories The following accessories are available for the FreeSpace E4 Series II System. ¨ North America/Japan Europe/Australia North America/Japan Europe/Australia Standard User Interface provides control of Multi-Zone Paging Interface provides selection sources, volume and mute for a single zone. of individual zone, all page and page initiation.
  • Page 99 Figure 5. Flash Memory PCB Component Layout Figure 6. DSP PCB Assembly Component Layout...
  • Page 100 Figure 7. Wallplate Sense PCB Assembly Component Layout Figure 8. Mic Sense PCB Assembly Component Layout Figure 9. Front Panel Display PCB Assembly Component Layout...
  • Page 101 Figure 10. E4 Series II Upper and Lower Amplifier PCB Assembly Component Layout...
  • Page 102 Figure 11. FS 4400 Upper Amplifier PCB Top Etch and Component Layout...
  • Page 103 Figure 12. FS 4400 Upper Amplifier PCB Bottom Etch and Component Layout...
  • Page 104 Figure 13. FS 4400 Lower Amplifier PCB Top Etch and Component Layout...
  • Page 105 Figure 14. FS 4400 Lower Amplifier PCB Bottom Etch and Component Layout...

  • Page 106: Service Bulletin

    FreeSpace 4400 Amplifier Module Assembly, Bose ® part number 301391 FreeSpace 4400 Amplifier Module adapter kit, Bose part number 311963 Procedure: Perform the following steps. Refer to the E4 Series II service manual, reference number 278977-SM, for more information. Note: This procedure cannot be used on any of the E4 Series I amplifier versions. In addition, it cannot be used on the E4 Series II Japan version, product code 036006.
  • Page 107 Perform the test procedures located in the E4 Series II service manual, reference number 278977-SM, to ensure proper operation of the unit before returning it to the customer. Bose Corporation; The Mountain, Framingham, Ma. 01701-9168 For Technical Assistance Call 1-800-233-4408 Service documentation available online at http://serviceops.bose.com...

  • Page 108: Service Manual Revision History

    SERVICE MANUAL REVISION HISTORY Date Revision Description of Change Change Driven Pages Level Affected 11/04 Document released at revision 00. Service manual initial release 3/08 Added instructions for use of FS 4400 Change to repair 56-72, amplifier module. Added expanded test of amplifier board 75-89, procedures.
  • Page 109 SPECIFICATIONS AND FEATURES SUBJECT TO CHANGE WITHOUT NOTICE Bose Corporation The Mountain Framingham Massachusetts USA 01701 P/N: 278977-SM Rev. 01 3/2008 (P) http://serviceops.bose.com...

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