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Bose FreeSpace 6 Manual

Business music system
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ELECTROSTATIC DISCHARGE SENSITIVE (ESDS) DEVICE HANDLING.................................................... 2
SAFETY INFORMATION ................................................................................................................................... 3
IDENTIFICATION OF UNIT UNDER TEST ....................................................................................................... 4
SPECIFICATIONS ............................................................................................................................................. 5
THEORY OF OPERATION ................................................................................................................................ 7
DISASSEMBLY/ASSEMBLY PROCEDURES................................................................................................. 11
Main Assembly Procedures ....................................................................................................................... 11
Figure 1. Main Disassembly/Assembly Exploded View ............................................................................. 12
Flush-Mount Loudspeaker Procedures ..................................................................................................... 15
Figure 2. Flush-Mount Loudspeaker Exploded View ................................................................................. 16
Surface-Mount Loudspeaker Procedures .................................................................................................. 16
Figure 3. Surface-mount Loudspeaker ...................................................................................................... 17
TEST PROCEDURES..................................................................................................................................... 18
Main Assembly Test Procedures................................................................................................................ 18
Loudspeaker Test Procedures ................................................................................................................... 20
PART LISTS AND EXPLODED VIEWS........................................................................................................... 21
Main Assembly Part List (Figure 4) ............................................................................................................ 22
Figure 4. Main Assembly Exploded View ................................................................................................... 23
Remote Assembly Part List (Figure 5) ....................................................................................................... 24
Figure 5. Remote Assembly Exploded View .............................................................................................. 24
Main Assembly Packaging Part List (Figure 5) .......................................................................................... 25
Figure 6. Main Assembly Packaging Exploded View ................................................................................. 26
Flush-mount Assembly Part List ................................................................................................................ 27
Figure 7. Flush-mount Exploded View ....................................................................................................... 27
Flush-mount Packaging Part List ............................................................................................................... 28
Figure 8. Flush-mount Loudspeaker Packaging Illustration........................................................................28
Surface-mount Assembly Part List ............................................................................................................ 29
Figure 9. Surface-mount Loudspeaker Illustration ..................................................................................... 29
Surface-Mount Packaging Part List ........................................................................................................... 30
Figure 10. Surface-mount Loudspeaker Packaging .................................................................................. 30
®
FreeSpace 6 Electrical Part List, PCB P/N 177300, Revision 1 .............................................................. 40
SCHEMATICS AND PCB LAYOUTS............................................................................................................... 49
Sheet 1, PCB IO1 Music Inputs (PCB 177300, Revisions 0 and 1) .......................................................... 50
Sheet 2, PCB IO1 Music Compressor (PCB 177300, Revisions 0 and 1) ................................................. 51
Sheet 3, PCB IO1 Board Page Processor (PCB 177300, Revisions 0 and 1) .......................................... 52
Sheet 5, PCB IO2 Board Line Outputs (PCB 177300, Revisions 0 and 1) ................................................ 54
Sheet 6, PCB IO2 Board Remote Volume (PCB 177300, Revisions 0 and 1) .......................................... 55
Sheet 9, PA Board Speaker EQ (PCB 177300, Revisions 0 and 1) .......................................................... 58
Sheet 11, Remote Board (PCB 177300, Revisions 0 and 1) ..................................................................... 60
FreeSpace Business Music System Manual pn 181816

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  • Page 1: Table Of Contents

    ® 6 Electrical Part List, PCB P/N 177300, Revision 0 .............. 31 FreeSpace 6 Electrical Part List, PCB P/N 177300, Revision 1 .............. 40 SCHEMATICS AND PCB LAYOUTS....................... 49 Sheet 1, PCB IO1 Music Inputs (PCB 177300, Revisions 0 and 1) ............50 Sheet 2, PCB IO1 Music Compressor (PCB 177300, Revisions 0 and 1) ..........

  • Page 2: Electrostatic Discharge Sensitive (Esds) Device Handling

    ® 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 3: 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. Perform 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 4: Identification Of Unit Under Test

    • Unit's Voltage Variation Type (100V,120V, 220V, 240V). There are two types of FreeSpace 6 units manufactured. If the unit you are servicing has a switch denoted by surface/flush mount speaker icons in block 12 of the front panel, then you have a 2 EQ unit.

  • Page 5: Specifications

    SPECIFICATIONS Dimensions Module 4.0" H x 7.5" W x 15.0" D (10.16 x 19.05 x 38.10 cm) Flush-mount Speaker Assembly: Flange Dia.: 6.25" (15.9 cm) Hole Dia.: 5.75" (14.6 cm) Depth: 6.5" (16.5 cm) Surface-mount Speaker Assembly: 3.3" H x 7.6" W x 6.4" D (8.3 x 19.3 x 16.33 cm) Weight Module:...
  • Page 6 Performance Specifications (Continued) Maximum Acoustic 82dB-SPL in 20,000 cubic feet room O u t p u t with a speech band RT 60 of 0.5 secs Opti-voice ® Paging Ensures a constant paging level over a 30dB dynamic range by compressing Circuitry the page signal.

  • Page 7: Theory Of Operation

    The FreeSpace 6 business music system delivers high-fidelity music and paging in commer- cial environments. The FreeSpace 6 components have been engineered to work together as a system. The electronics have separate compressors for music and paging sources that de- crease the dynamic range of the audio signal, thereby increasing the audibility of musical passages and paging anouncements.
  • Page 8 The two sections of U15 are used to control a bi-colored Music-Compressor LED, D2. As long as the compressor is enabled, the LED glows green to indicate how active the compressor is. Whether or not the compressor is enabled, the LED is also acting as a watch dog and will flash red if the signal presented to the music compressor is too great for it to handle.
  • Page 9 U304 and U307 are power amplifiers with differential outputs. Both amplifier outputs can deliver 16 watts into the nominal 2 ohm load of a pair of FreeSpace 6 speakers. The CD-DIA pins are pulled low when the amplifiers begin to clip. This is used to control a compressor implemented on Sheet 9 and Sheet 7.
  • Page 10 5. Remote PCB REM PCB Schematic Sheet 11 The circuits on this sheet are contained on a small PC board inside the remote control. The potentiometer is wired as a 10K ohm rheostat and controls the remote volume control circuits on Sheet 6, while the SPST switch controls the Music Selector on Sheet 1.

  • Page 11: Disassembly/Assembly Procedures

    1.1 Place the amplifier flat on the work- slots are locked into place. ® bench with the Bose logo in the upper-left corner. 2.4 Secure the chassis top cover (3) by tightening two silver screws (2) with a 1.2 Detach the chassis cover (1) by holding...
  • Page 12 CHASSIS COVER CHASSIS TOP COVER IO1 PCB CONNECT IO2 PCB TO P3A RED/BLK. CONNECT AMP ASSY TO P3B BLU./GRY. COUPLER PRIMARY CONNECT TO P5 CHASSIS BASE SECONDARY Figure 1. Main Disassembly/Assembly Exploded View...
  • Page 13 3.4 Remove two black screws (5) from the 4.4 Connect the following cables: Amp PCB (8) and three black screws (6) • Connect the main power's two-pin cable from the Heatsink (7). to the Amp PCB's P5 connector. • Connect the tranformer's secondary five- 3.5 Remove the Heatsink/Amplifier PCB pin cable to the Amp PCB's P4 connector.
  • Page 14 6.3 Connect the following cables: 8. IO1 & IO2 PCB Replacement (Chassis Top) • Connect the transformer's five-pin sec- ondary cable to the Amp PCB's P4 connec- 8.1 Connect the 12-pin cable to connector tor. P1A on the larger board. •...

  • Page 15: Flush-Mount Loudspeaker Procedures

    C. Use Procedure 1.2 to return the grille to Flush-Mount Loudspeaker Procedures the enclosure. 1. Flush-mount Loudspeaker 1.5 Terminal Cup Removal NOTES: Certain parts will be referred to in A. Use a phillips-head screwdriver to these procedures. The numbers in paren- remove one screw (7) from the junction-box theses correspond to the individual parts cover.

  • Page 16: Surface-Mount Loudspeaker Procedures

    Surface-Mount Loudspeaker Procedures 1. Surface-Mount Loudspeaker NOTE: The Surface-mount Loudspeaker has only two removable and replaceable parts, the grille and the grille's scrim cloth. Junction-Box Refer to the Surface-mount Assembly Part Cover List for the grille and scrim cloth's order numbers.
  • Page 17 Grille Figure 3. Surface-mount Loudspeaker...

  • Page 18: Test Procedures

    TEST PROCEDURES Main Assembly Test Procedures Input Connections Page Input Test Set-Up Parameters Switches Connect the positive (+) side of an oscilla- tor to the positive input terminal. Connect All switches are referenced by their block the negative (-) side to the negative (-) and diagram location on the top of the unit.
  • Page 19 1. Page Input To Page Output Gain 6. Noise 1.1 Apply a 5 Vrms, 1KHz signal to the 6.1 Set the volume control to Max. Page Input. 6.2 With the source off, measure the left ≤ 1.2 Measure the Page Output. Should be and right Speaker output.

  • Page 20: Loudspeaker Test Procedures

    Loudspeaker Test Procedures NOTE: These procedures apply to both Flush-mount and surface-mount loudspeakers. The surface- mount loudspeaker is not repairable. If this loudspeaker fails the following tests contact your Bose ® Field Service Representative. 1. Rub and Tick Test Apply a signal of 6.0 Vrms at 80 Hz to the input terminals of the loudspeaker. See Figure 1. No extraneous noises such as rubbing or ticking should be heard.

  • Page 21: Part Lists And Exploded Views

    PART LISTS AND EXPLODED VIEWS ® The following section contains part lists and exploded views for the FreeSpace 6 business music system. The part lists are broken down as follows: • Main Assembly Part List and Main Assembly Exploded View. •...

  • Page 22: Main Assembly Part List (Figure 4)

    3. The PCB Assembly is divided into three parts: the Amplifier PCB, IO1 PCB, and IO2 PCB. The PCB locations are identified on the FreeSpace 6 Exploded View. This information is provided for reference only.
  • Page 23 CHASSIS COVER CHASSIS TOP COVER LOCATE WITHIN BOX EMBOSSED ON CHASSIS IO1 PCB LOCATE WITHIN BOX EMBOSSED ON CHASSIS TOP VIEW IO2 PCB CONNECT AMP ASSY TO P3B COUPLER PRIMARY CONNECT TO P5 CHASSIS BASE SECONDARY Figure 4. Main Assembly Exploded View...

  • Page 24: Remote Assembly Part List (Figure 5)

    Remote Assembly Part List Item Description Part Number Q t y S e e Number Note Assy PCB Assy,FreeSpace 6,AMP,S/F 181692 Cover,Remote,FreeSpace 6,Europe 178101 Cover,Remote,FreeSpace 6,Japan 178102 Cover,Remote,FreeSpace 6,Aus,Am/Can 178103 Knob,Remote,FreeSpace 6 178104 Screw,OVLHD,6-32x1.00,Am/Can 178115-16 Screw,OVLHD,M3.5x25mm,Aus,Europe 178116-25 Screw,OVLHD,M4x25mm,Japan 178117-25 Screw,TAPP,6-13x.5,PAN,XREC...

  • Page 25: Main Assembly Packaging Part List (Figure 5)

    Main Assembly Packaging Part List (Figure 5) Item Description Part Number Q t y S e e Number Note Assy Packing, Endcap, EPS, Left 177949 Polybag, 12"x8"x24" 143076 Packing, Endcap, EPS, Right 177305 Rem,RVC Walplt,Frspc 6,US/CAN 178111 Rem,RVC Walplt,Frspc 6,Eur 178113 Rem,RVC Walplt,Frspc 6,Japan 178112...
  • Page 26 Figure 6. Main Assembly Packaging Exploded View...

  • Page 27: Flush-Mount Assembly Part List

    Flush-mount Assembly Part List Item Description Part Number Number Note Grille Assy. Enclosure Assy, Back Can, 102-F6 ----------- Screw, Hilo, 8, Pan, Xrec 172721-10 Twiddler, 2.25" 149167 Cup, Terminal 176459 Baffle, 75 Cu In, White ----------- Screw, Mach, 8-32, Pan,Xrec/Slot 172715-08 Foot, Clear, .312x.085, Bulk 178321-99...

  • Page 28: Flush-Mount Packaging Part List

    Part Number Number Note Shield, Paint 180092 Grille Assy, 4pk, Wht 178133-2 Pan Mounting Assy, 4 Pk 178135 Spring Assy, 8 Pack, Freespace 6 178132 Carton, RSC 177752 Packing, Insert 177744 Packing, Crease Sheet, 18x21 177749 Packing, Crease Sheet, 16.07x5.75 177747 Packing, Crease Sheet, 20.75x17.0...

  • Page 29: Surface-Mount Assembly Part List

    Surface-mount Assembly Part List Item Description Part Number Number Note Knob, White 178149-02 Knob, Gray 178149-01 Grille, Speaker, Computer Gray 177146-01 Grille,Speaker, Arctic White 177146-02 Cloth, Scrim, Grille 181192 *Part not illustrated Figure 9. Surface-mount Loudspeaker Illustration...

  • Page 30: Surface-Mount Packaging Part List

    Surface-Mount Packaging Part List Item Description Part Number Number Note Pack Bracket, Wall, White 178146-02 Bracket, Wall, Gray 178146-01 Knob And Pkg Assy, Arctic White 181736-02 Knob And Pkg Assy, Gray 181736-01 Carton, 4 Pack 181535 Packing, End Cap, 181537 Packing, Crease Sht, 46.5x8.5 181536 Bag, Poly, 14.38x9.87x2 Mil...

  • Page 31: Freespace ® 6 Electrical Part List, Pcb P/N 177300, Revision 0

    ® FreeSpace 6 Electrical Part List PCB P/N 177300, Revision 0 Resistors Reference Description Part Number Reference Designator Pot,Rotary,50kΩ, 177289-503 10%,Dual R2,3,5 Pot,Rotary,10kΩ, 177290-103 10%,Single R6-9 Pot,Rotary,10kΩ, 177289-103 10%,dual R10,11,27,36- 10.0KΩ,1%,1/10W, 133625-1002 39,44,45,47,50,52, 0805 53,55,56,61,63,64, 65,70-72,75,85,89, 96,99,101,107,110, 116,128,129,130, 135,152,202,204, 206,212,213,218, 219,221,222,240, 256,265,275,315, 319,321,322,336,...
  • Page 32 ® FreeSpace 6 Electrical Part List PCB P/N 177300, Revision 0 Resistors (Continued) Reference Description Part Number Reference Designator R46,54,73,209 56.2KΩ,1%,1/10W, 133625-5622 0805 R51,119,120,125,12 61.9KΩ,1%,1/10W, 133625-6192 6, 138-141,325,346 0805 R57,91,97,102,104, 100KΩ,1%,1/10W, 133625-1003 111,133,157,160, 0805 207,224,241,277, 279,304,317,358 R60,78 68.1KΩ,1%,1/10W, 133625-6812 0805 R67,83,237,301,333 4.12KΩ,1%,1/10W, 133625-4121...
  • Page 33 FreeSpace ® 6 Electrical Part List PCB P/N 177300, Revision 0 Resistors (Continued) Reference Description Part Number Reference Designator R153 27.4KΩ,1%,1/10W, 133625-2742 0805 R155158,239 5.11KΩ,1%,1/10W, 133625-5111 0805 R156,159 Pot,Rotary,10KΩ, 170042-103 10%, 1/2W,Trim R211,280,340 88.7KΩ,1%,1/10W, 133625-8872 0805 R220,223 11.0KΩ,1%,1/10W, 133625-1102 0805 R238,308,309,313, 4.75KΩ,1%,1/10W, 133625-4751...
  • Page 34 ® FreeSpace 6 Electrical Part List PCB P/N 177300, Revision 0 Capacitors Reference Description Part Number Reference Designator C1,2,29,123,200, .01uF,10%,50V, 133623-103 X7R,0805 C3,7,23,24,25,35, 47pF,5%,50V,0805, 133622-470 47,50,51,63,89,93, C O G 100,103,116,117, 118,119, 120 C4,5,36,38,54,86, 10uF,20%,35V,85, 149948-100V 90,102,105,202,217, 227,237,301,304, 309,335,348 C6,14,19,39,106, 100pF,5%,50V, 133622-101 107,112,113, 0805,COG...
  • Page 35 FreeSpace ® 6 Electrical Part List PCB P/N 177300, Revision 0 Capacitors (Continued) Reference Description Part Number Reference Designator 220uF,20%,25V,85, 149948-221E C45,60 100uF,20%,25V,85, 149948-101E C64,319,327,337, .22uF,5%,50V,85, 137127-224 350, 351 .47uF,5%,50V,85, 137127-474 C104,203,341,342 22uF,20%,25V,85, 149948-220E C225,240,248-250 390pF,5%,50V,0805 133622-391 ,COG C228,241 .0012uF,5%,100V, 137127-122 85, BOX, C229,230,246,247...
  • Page 36 ® FreeSpace 6 Electrical Part List PCB P/N 177300, Revision 0 Diodes Reference Description Part Number Reference Designator D1,3,4,6 LED,2.5v,10ma 177280 Green,Vertical D2,5 LED,2.5v,10ma, 177281 Grn/Red,Vertical D10,11,13- Dual,SOT-23,BAV99 147239 17,22,24,107,201, 204,300 D12,20,21,200,302, Switching,75V, 121501 309,310 300mA D18,19,23,202,203 Zener,18V,1W,5%, 116995-4746A 1N4746 D25,27,29,301 Dual,SOT-23,BAV70 147249 *D305...
  • Page 37 ® FreeSpace 6 Electrical Part List PCB P/N 177300, Revision 0 Integrated Circuits Reference Description Part Number Reference Designator U1-4,10,15,200, Op-Amp,Dual, 108568 202-205,301 DIP-8,RC4559 U11,12 Switch,Active, 177292 SIP-8,BA3128N U201 Op-Amp,Dual, 133171 DIP-16,CN3280 U302 Op-Amp,Single, 119834 DIP-8,CA3080 U5,7 Compandor, 178894 NE572N U6,13,14,300,303 OpAmp,Quad, 144008...
  • Page 38 2 pos,Blk Connector,Rt.Ang. 177291-08 Beau Connector,Rt.Ang., 177291-05 5 pos,Blk J4,5 Connector,RCA, 177295 Dual,Female Relay,24 Vdc,4PDT 144017 Harness,26 177298-12 AWG,Freespace 6 Connector,Header, 148591-12 12 pos Harness,24 177298-08 AWG,Freespace 6 Connector,Header, 148591-08 8 pos Harness,22 177296 AWG,Freespace 6 P3A ,3B Connector,Header, 133220-02 Inline,PCB Mnt.,2p...
  • Page 39 ® FreeSpace 6 Electrical Part List PCB P/N 177300, Revision 0 Miscellaneous Components Reference Description Part Number Reference Designator Connector,Header, 178742-4 High Current 8mm pitch Connector,Header,5 148591-05 S1-6,S9 Switch,Slide,DPST, 176148 Vertical Switch,Slide,DPDT 176147 Switch,DIP,SPST, 148777-1 4 pos. SW500 Switch,SPST, 178108 Rocker TP1-9,10,500, Connector,Header,...

  • Page 40: Freespace 6 Electrical Part List, Pcb P/N 177300, Revision 1

    FreeSpace ® 6 Electrical Part List PCB P/N 177300, Revision 1 Resistors Reference Description Part Number Reference Designator Pot,Rotary,50kΩ, 177289-503 10%,Dual R2,3,5 Pot,Rotary,10kΩ, 177290-103 10%,Single R6,7 Pot,Rotary,20kΩ, 177289-203 10%,Dual R8,9 Pot,Rotary,10kΩ, 177289-103 10%,Dual R10,11,27,36-39, 10.0KΩ,1%,1/10W, 133625-1002 44,45,47-50,52,53, 0805 55,56,61, 63-65, 70-72,75,85,89,96, 99,101,107,110,116, 128-130,135,152,...
  • Page 41 FreeSpace ® 6 Electrical Part List PCB P/N 177300, Revision 1 Resistors (Continued) Reference Description Part Number Reference Designator R46,54,73,209,233, 57.6KΩ,1%,1/10W, 133625-5762 243, 0805 R51,119,120,125, 61.9KΩ,1%,1/10W, 133625-6192 126,138-141, 0805 325,328,346,352, R57,91,97,102,104, 100KΩ,1%,1/10W, 133625-1003 111,133,157,160, 0805 207,224,241,277, 279,304,317,358 R60,78 68.1KΩ,1%,1/10W, 133625-6812 0805 R67,83,237,301, 4.12KΩ,1%,1/10W,...
  • Page 42 ® FreeSpace 6 Electrical Part List PCB P/N 177300, Revision 1 Resistors (Continued) Reference Description Part Number Reference Designator R153 27.4KΩ,1%,1/10W, 133625-2742 0805 R156,159 Pot,Rotary, 170042-103 10KΩ,10%,1/2W, Trim R205,215,278,326, 150KΩ,1%,1/10W, 133625-1503 327,347,349 0805 R220,223 11.0KΩ,1%,1/10W, 133625-1102 0805 R230,250,303,324, 14.0KΩ,1%,1/10W, 133625-1402 0805 R235,245,330,354 23.7KΩ,1%,1/10W,...
  • Page 43 ® FreeSpace 6 Electrical Part List PCB P/N 177300, Revision 1 Capacitors Reference Description Part Number Reference Designator C1,2,29,123,200, .01uF,10%,50V, 133623-103 X7R,0805 C3,7,23-25,35,47, 47pF,5%,50V,COG, 133622-470 50,51,63, 89,93, 0805 100,103, 116-120 C4,5,36,38,54,90, 10uF,20%,35V,85, 149948-100V 102, 105,202,217, 301, 304,309,335, C6,14,19,39,106, 100pF,5%,50V, 133622-101 107,112-115,121, COG,0805 C8,11,15,18,20,27,3...
  • Page 44 ® FreeSpace 6 Electrical Part List PCB P/N 177300, Revision 1 Capacitors (Continued) Reference Description Part Number Reference Designator 220uF,20%,25V,85, 149948-221E C45,60 100uF,20%,25V,85, 149948-101E C48,68,69,71,75 4.7uF,20%,35V,105, 137126-4R7 C64,319,327,337,33 .22uF,5%,50V,85, 137127-224 8,350,351 10uF,20%,25V,85, 149947-100E .47uF,5%,50V,85, 137127-474 C104,203,341,342 22uF,20%,25V,85, 149948-220E *C209,227,232, 0Ω,RES,Axial,.2W 139942 *See Note 1 C210,231...
  • Page 45 ® FreeSpace 6 Electrical Part List PCB P/N 177300, Revision 1 Diodes Reference Description Part Number Reference Designator D1,3,4,6 LED,10mA,2.5V, 177280 Green,Vert D2,5 LED,10mA,2.5V, 177281 Grn/Red,Vert D10,11,13- Dual,SOT-23,BAV99 147239 17,22,24,25,27,29, 107,201,204,300, D12,20,21,200,302, Switching,75V, 121501 309,310, 300mA D18,19,23,202,203 Zener,18V,1W,5%, 116995-4746A 1N4746 *D305 Rectifier,Bridge, 143952...
  • Page 46 ® FreeSpace 6 Electrical Part List PCB P/N 177300, Revision 1 Integrated Circuits Reference Description Part Number Reference Designator U1-4,10,15,200, Op Amp,Dual, 108568 202-205,301 DIP-8, RC4559 U5,7 Comparator, 178894 And/Or,NE572N U6,13,14,300,303 OpAmp,Quad, 144008 DIP-14,NJM2059 Mult/Demult,8CH, 177308 DIP-16,4051 Multiplexer,DIP-16, 147243 CD4052 U11,12 Switch,Active, 177292...
  • Page 47 J8,11 Connector,Rt.Ang., 177291-02 2 Pos,Blk. Connector,Rt. Ang., 177291-08 Beau JP300 Jumper,22AWG, 148242-100 Non-Insul, 10.0mm Relay,24Vdc,4PDT 144017 Harness,26 181702-12 AWG,Freespace 6 Connector,Header, 148591-12 12 Pos. Harness,24 177298-08 AWG,Freespace 6 Connector,Header, 148591-08 8 Pos. Harness,22 177296 AWG,Freespace 6 P3A ,3B Connector,Header, 133220-02 Inline, PCB, Mnt.,...
  • Page 48 ® FreeSpace 6 Electrical Part List PCB P/N 177300, Revision 1 Miscellaneous Components Reference Description Part Number Reference Designator S1-6,8,9 Switch,Slide,DPST, 176148 Vertical Switch,Slide,DPDT 176147 Switch,DIP,SPST, 148777-1 4 Pos. SW500 Switch,SPST, 178108 Rocker TP1-10,500 Connector,Header, 171621-0103 Testjack,1 Pos,OR VR300 Varistor,Met Oxide 170189 ,275V,75 joule Note:...

  • Page 49: Schematics And Pcb Layouts

    SCHEMATICS AND PCB LAYOUTS The schematics and PC board layouts provided with this manual can be used for units built with PC board 177300, Revisions 0 and 1.
  • Page 61 SPECIFICATIONS AND FEATURES SUBJECT TO CHANGE WITHOUT NOTICE Bose Corporation The Mountain Framingham, Massachusetts USA 01701 P/N 181816 01/96: Rev.0 FOR TECHNICAL ASSISTANCE OR PART ORDERS, CALL 1-800-367-4008...

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