Bose FREESPACE SYSTEM CONTROLLER Service Manual
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Bose FREESPACE SYSTEM CONTROLLER Service Manual

Bose FREESPACE SYSTEM CONTROLLER Service Manual

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®
®
®
BOSE
FREESPACE
SYSTEM CONTROLLER
Service Manual
©
1995 Bose Corporation
P/N 175031

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Summary of Contents for Bose FREESPACE SYSTEM CONTROLLER

  • Page 1 ® ® ® BOSE FREESPACE SYSTEM CONTROLLER Service Manual © 1995 Bose Corporation P/N 175031...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Electrostatic Discharge Sensitive (ESDS) ................ 2 Safety Information....................... 3 Specifications ........................4 Specifications ........................5 Figure 1. Block Diagram ....................6 Figure 2. Input Connections ..................7 Figure 3. Output Connections ..................7 Figure 4. Rear Panel View .................... 7 Disassembly / Assembly procedures ................

  • Page 3: Electrostatic Discharge Sensitive (Esds)

    ® BOSE CORPORATION WHICH IS BEING FURNISHED ONLY FOR THE PURPOSE OF SERVICING THE IDENTIFIED BOSE PRODUCT BY AN AUTHORIZED BOSE SERVICE CENTER OR OWNER OF THE BOSE PRODUCT, AND SHALL NOT BE REPRODUCED OR USED FOR ANY OTHER PURPOSE.

  • Page 4: Safety Information

    SAFETY INFORMATION 1. Parts that have special safety characteristics are identified by the symbol on schematics or by special notes on the parts list. Use only replacement parts that have critical characteristics recommended by the manufacturer. 2. Make leakage current or resistance measurements to determine that exposed parts are acceptably insulated from the supply circuit before returning the unit to the customer.

  • Page 5: Specifications

    Model 25, 32 or Bose ® ® output level: 600Ω, balanced Model 25, 32 or Bose 102 output impedance: Model 25, 32 or Bose 102 frequency Flat power with Model 25 or 32 loudspeakers response: Channel A - on Model 25, 32 or Bose 102 paging: Channel B - switchable 600Ω, balanced...
  • Page 6 SPECIFICATIONS (Continued) Outputs (Continued) Model 8 Frequency Response: Flat power response with Model 8 loudspeaker Model 8 Paging: Channel A - On Channel B - Switchable Miscellaneous 40dB or greater Common Mode Rejection: ® Opti-voice System Circuitry: The system automatically switches from music to page during paging.
  • Page 7 25, Model 32, and Bose 102 ® loudspeaker. • Two channels of non-equalized line output, which can be used to interconnect systems like the Bose FreeSpace One and FreeSpace 6 business music systems. • Three separate input channels for microphone, channel A and Channel B.
  • Page 8 Figure 2. Input Connections Figure 3. Output Connections Figure 4. Rear Panel View...

  • Page 9: Disassembly / Assembly Procedures

    DISASSEMBLY / ASSEMBLY PROCEDURES 6. Main PCB Replacement NOTE: Numbers in parentheses corre- spond to figure 5. 6.1 Orient the Main PCB (1) so that LED 1 and 2 are lined up with the power and page 1. Top Cover Removal indicators on the front panel.
  • Page 10 12. Power Switch Replacement 8.3 Install four nuts (11) that secure the transformer to chassis (2) and one that 12. 1 Orient the power switch (6) so the secures the ground lug to chassis. switch's spades are down. 8.4 Solder the secondary wires to the 12.2 Push the power switch into the front power connector.
  • Page 11 FRONT VIEW OF CONNECTOR USE ONLY WITH 250V FUSE 120V SEE PAGE 11 FOR VOLTAGE SELECTION AND FUSE REPLACEMENT Figure 5. Exploded View...

  • Page 12: Test Procedures

    TEST PROCEDURES 1. Output level Test Set-Up parameters 1.1 Apply a 2 Vrms, 1 KHz signal to Channel A and B input. Switches 1.2 Reference a dB meter to the applied All switches shall be set to their right signal. hand position.
  • Page 13 3. Distortion 7. Channel Separation 7.1 Apply a 2Vrms, 1 KHz signal to Chan- 3.1 Apply a 2Vrms 1 KHz, 90 Hz, and 100 nel A. Hz signal to Channel A and B input. 3.2 Measure the THD+N at the Line 7.2 Reference a dB meter to Channel A output.
  • Page 14 11. Page Mute 14. Page Automatic Level Control 11.1 Apply a 3mVrms, 1 KHz signal to the 14.1 Apply a 1 KHz, 100mV signal to the page input. page input. 11.2 Apply a 2Vrms, 1 KHz signal to 14.2 Reference a dB meter to the applied channel A and B input.

  • Page 15: Part List Notes

    PART LIST NOTES 1. This part is not normally available from Customer Service. Approval from the Field Service Manager is required before ordering. 2. The individual parts located on the PCB are listed in the parts list. This part is critical for safety purposes. Failure to use a substitute replacement with the same safety characteristics as the recommended replacement part might create shock, fire and/ or other hazards.

  • Page 16: Main Assembly Parts List

    Main Assembly Parts List Item Description Part Qty- S e e Number Number P e r Note Assembly PCB Assy,8/32 Controler 179089 1, 2 Chassis,8/32 Controller 172262 Cover,8/32 Controller 172263 Panel,Front Chassis 172264 173681 Transformer,120/240V 143960 Switch,Rocker,SPST,Power,PS1 Lens,Led,Chassis,Clear 144023 Screw,Tapp,#4-40x.312,Btn,Xrec 170285-05 Screw,4-40x.25,Phil,Pan Hd 103140-04...

  • Page 17: Electrical Parts List

    ELECTRICAL PARTS LIST Resistors Reference Description Part Number See Note Designator R100, 101, 103, 1.00k ,1%,Chip 133625-1001 105, 110, 111, 113, 115, 212, 345, 346, 445, R102, 104, 5.76k,1%,Chip 133625-5761 112, 114, 320, 335, 420, 435 R120, 121, 123, 1.69k,1%,1/10w 133625-1691 R122, 124, 215, 100k, 1%,Chip...
  • Page 18 Resistors (continued) Reference Description Part Number Note Designator R210 18.2k,1%,Chip 133625-1822 R211, 342, 442 2.67k ,1%,1/10w 133625-2671 R216, 329, 429 3.83k ,Chip,1% 133625-3831 R224, 227 150k ,1%,Chip 133625-1503 R228, 232 56.2k,Chip,1% 133625-5622 330 Ω, R230 121243-1213315 5%,1/4w,Cf R231, 312, 313, 4.75K,1%,Chip 133625-4751 324, 325, 330,...
  • Page 19 Capacitors (continued) Reference Description Part Number Note Designator C106, 116, 204, 100pf,50v,5% 133622-101 303, 403 C128, 129, 219, 10uf,0805,25v, 133624 221, 237, 238 C156, 157, 158, .01uf,50v,10% 133623-103 159, 164, 213, 214, 228, 229, 234, 235, 321, C200, 217, 230, 47uf,El,50v,20% 149948-470H 231, 239...
  • Page 20 Diodes Reference Description Part Number Note Designator D100, 101 1n4746,Zen,18v, 116995-4746A 1w,5% D2, 3, 5, 6 1n4148 121501 Rectifier,Bridge, 143952 100v,1a Surge Absorber, 178096 D Type DD1, 100, 101, Bav99,Sot23 147239 102, 103, 104, 105, 106, 107, 108, 109, 110, LED1 Led,Green,Right 144027...
  • Page 21 Relays Reference Description Part Number Note Designator RLY1, 2 Relay,24vdc,4pdt 144017 Switches Reference Description Part Number Note Designator SW101,102, 103, Switch,Slide 172927 104, 105, 106, 107, 108, 109, Connectors Reference Description Part Number Note Designator E1, E1A Conn,Header,26 177257-26 Pos,Top Entry Conn,Housing,9 172929-09 Pos,Vertical...

  • Page 22: Packaging

    Packaging Item Description Part Number Number Conn Kit Assy,8/32 Cont 180095 Line Cord, 120v, Us/Ca, Detachable 173350 Line Cord, 230v, Eur, Detachable 173352 Line Cord, 100v, Jpn, Detachable 173353 Line Cord, 230v, Uk, Detachable 173351 Line Cord, 240v, Aus, Detachable 173354 Bag, Poly 110892...

  • Page 23: Rev 0/ Rev1

    MAIN PCB SCHEMETIC REV 0/ REV1 Note: The Page Triggering on early production units may not be reliable. R222 was changed from 150K to 15.0K to improve the Page Triggering.

  • Page 24: Rev 0/ Rev1

    MAIN PCB SCHEMETIC REV 0/ REV1...

  • Page 25: Rev 0/ Rev1

    MAIN PCB SCHEMETIC REV 0/ REV1...

  • Page 26: Rev 0/ Rev 1

    MAIN PCB SCHEMETIC REV 0/ REV 1...

  • Page 27: Rev 1

    I/O PCB SCHEMETIC REV 1...

  • Page 28: Rev 1

    I/O PCB SCHEMETIC REV 1...

  • Page 29: Rev 1

    I/O PCB SCHEMETIC REV 1...

  • Page 30: Rev 1

    I/O PCB SCHEMETIC REV 1...

  • Page 31: Rev 0

    I/O PCB SCHEMETIC REV 0...

  • Page 32: Rev 0

    I/O PCB SCHEMETIC REV 0...

  • Page 33: Rev 0

    I/O PCB SCHEMETIC REV 0...

  • Page 34: Rev 0

    I/O PCB SCHEMETIC REV 0...

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