Bose-802-III-Service-Manual 电路图 维修手册.pdf

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1、Service Manual 2007 Bose Corporation Bose 802 Series III Loudspeaker Part Number 260432 REV. 02 RadioFans.CN 收音机爱 好者资料库 2 SPECIFICATIONS WARRANTY: 5 year limited warranty External dimensions: Single speaker:13.5 H x 20.5 W x 13.0 D (34.3 x 52.1 x 33.0)cm Packed system:14.4 H x 21.8 W x 18.3 D (36.6

2、x 55.4 x 46.4)cm Weight: Single speaker:29.3 lbs (13.29 kg) Packed system:32 lbs (14.5 kg) Transducer:Eight 4.5 environmental drivers per enclosure Internal cabinet volume:3,020.7 cu. In. (49.5 liters) Port: Type:Two round ports located central to each four speaker pattern. Total port area:6.0 sq. i

3、n. (38.9 sq. cm) Port length:7.5 (19.0 cm) Resonance frequency:50 Hz Impedance:8 2 Ohm Power handling:240W continuous per IEC-268-5 Sensitivity:91 dB SPL, 1W, 1m Contents Specifications.2 Disassembly/Assembly Procedures . 3-4 Figure 1. Schematic Diagram .4 Figure 2. Wiring Diagram .4 Figure 3. Drive

4、r Location Diagram.4 Test Procedures .5 Main Part List.6 Figure 4. Exploded View.6 Shading Network Part List .7 Figure 5. Shading Network Layout .7 Packaging Part List.7 Figure 6. Packaging View .7 PROPRIETARY INFORMATION THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF BOSE CORPORATION WHICH IS BE

5、ING 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 PUR- POSE. RadioFans.CN 收音机爱 好者资料库 3 Clips stay in cabinet Secures trim ring Note: Numbers in parenthesis c

6、orrespond to call-outs in figure 4. 1. Grille Removal 1.1 Remove the four screws (16) securing the trim ring (8) to the cabinet. Pull off the trim ring leaving the four clips (17) in place on the cabinet. 1.2 Remove the four screws (10) securing the grille (6) to the cabinet. Pull off the grille. 2.

7、 Grille Replacement 2.1 Line up the grille (6) with the cabinet and secure it with four screws (10). 2.2 Line up the trim ring (8) with the cabinet. Press the trim ring into the four clips (17) located in the corners of the cabinet. 2.3 Replace the four screws (16) securing the trim ring to the cabi

8、net. 3. Driver Removal 3.1 Perform procedure 1. 3.2 Remove the three screws (10) securing the driver (1) to the cabinet. Lift out the driver. 3.3 Cut the wires as close as possible to the drivers wire terminal. 4. Driver Replacement 4.1 Referring to figures 1, 2, and 3, attach the wires to the drive

9、rs (1) wire terminal. Tinnerman clips located inside on back wall Speakon connector Shading network PCB located inside front wall 4.2 Line up the driver and gasket (2) to the cabinet and secure it with three screws (10). 5. Shading Network PCB Removal/Access 5.1 Remove the position 2, 3, 6, and 7 dr

10、ivers (1) from the cabinet using procedure 3.1-3.2. 5.2 Using a short flat-blade screwdriver, remove the two screws securing the shading network PCB (3) to the inside wall of the cabinet. Remove wires as needed. 6. Shading Network PCB Replacement 6.1 Referring to figure 2, replace any wires that wer

11、e removed. 6.2 Replace the two screws securing the shading network PCB (3) 7. Speakon Connector Removal 7.1 Perform procedure 3.1-3.2 to remove the position 2, 3, 6, and 7 drivers. 7.2 Using a flat-blade screwdriver, pry out the tinnerman clip (5) securing the Speakon connector (4) to the cabinet. 7

12、.3 Pull out the Speakon connector and remove the wires. 4321 8765 Top of speaker Driver location DISASSEMBLY/ASSEMBLY PROCEDURES RadioFans.CN 收音机爱 好者资料库 4 4321 8765 8. Speakon Connector Replacement 8.1 Referring to the figure 2, attach the wires to the Speakon connector (4). 8.2 Align the Speakon co

13、nnector in the cabinet. 8.3 Reshape the tinnerman clip (5) or use a new one. Place an appropriate size wood block between the Speakon connector (rear of speaker) and a hard surface. Using a flat-blade screw- driver (or similar tool) and a hammer, secure the tinnerman clip into place. Make sure the S

14、peakon connector is securely fastened. DISASSEMBLY/ASSEMBLY PROCEDURES + _ + _ + _ + _ + _ + _ + _ + _ 3 2674158 PTC C1 5 uF C2 20 uF RD BK OR BL BN BK BLWH GN YL WH GY GN Figure 2. Wiring Diagram Figure 1. Schematic Diagram Figure 3. Driver Location Diagram Top of speaker Earlier VersionsLater Vers

15、ions Earlier VersionsLater Versions RED WHITE DVR 2- (BLUE) DVR 3+ (RED) DVR 7- (GREEN) WHITEYELLOW YELLOW GREEN ORANGE BLUE BLUE ORANGE BROWN BLACK GREEN BROWN BLUE DVR 1- (WHITE) DVR 8- (BLACK) REAR VIEW OF NEUTRIK CONNECTORS GREY CROSSOVER BOARD_802 1- 1+ 2+ 2- 1+ 2+ 1-2- GREEN GREY 8 6 7 4 2 5 1

16、 3 + - + - + - + - - + - + - + + - RED BLACK BLACK RED + _ + _ + _ + _ + _ + _ + _ + _ 3 2674158 PTC C1 5 uF C2 20 uF RD BK OR PU BN PK BLWH GN YL PK GY BLK PINK WHITE DVR 2- (BLUE) DVR 3+ (RED) DVR 7- (GREEN) YELLOW YELLOW BLUE ORANGE GREEN BROWN DVR 1- (WHITE) DVR 8- (BLACK) REAR VIEW OF NEUTRIK C

17、ONNECTORS GREY CROSSOVER BOARD_802 1- 1+ 2+ 2- 1+ 2+ 1-2- GREY 8 6 7 4 2 5 1 3 + - + - + - + - - + - + - + + - PINK WHITE PURPLE ORANGE RED BLACK PINK PURPLE BROWN 5 1+ 2+ 1- 2- Positive input Negative input 1. Phase Test 1.1 Observing polarity, apply 9 VDC to the input connector. Refer to the figur

18、e below. 1.2 All driver cones should move outward. Referring to figure 1, rewire any driver that moves inward. 2. Crossover Test 2.1 Connect a 0.5 Ohm resistor and amplifier to the speaker input connector as shown in the diagram below. 2.2 Apply a 2 Vrms signal to the speaker input connector at the

19、frequencies listed in the table below. 2.3 Measure the voltage across the 0.5 Ohm resistor comparing the results to the table below. If the voltage is out of range, check the crossover components and wiring. Amplifier +- 0.5 Ohm + - Speaker Volt meter -+ Speaker Output FrequencyMinMax 8 kHz104 mVrns

20、141 mVrms 12 kHz77 mVrms120 mVrms TEST PROCEDURES 3. Rub and Tick Test 3.1 Apply a 10 Vrms, 10 Hz signal to the speaker input connector. 3.2 No extraneous noises such as rubbing, scraping or ticking should be heard. Note: To distinguish between normal suspen- sion noise and rubs or ticks, slightly d

21、isplace the cone of the driver with your fingers. If the noise can be made to go away or get worse, it is a rub or tick and the driver should be replaced. If the noise stays the same, it is normal suspension noise and the driver is fine. Suspension noises will not be heard with program material. 4.

22、Air Leak Test 4.1 Apply a 15 Vrms, 65 Hz signal to the speaker input connector. 4.2 Listen for air leaks around the drivers and cabinet seam. Reposition or replace any gasket found to leak. Repairs made to the cabinet seam should not be visible from the exterior of the speaker. 5. Sweep Test 5.1 App

23、ly a 10 Vrms, 10 Hz signal to the speaker input connector. 5.2 Sweep the signal generator from 10 Hz to 500 Hz. 5.3 Apply a 500 Hz, 5 Vrms signal to the speaker input connector. 5.4 Sweep the signal generator from 500 Hz to 5 kHz. 5.5 Listen for buzzes, rattles or other noises. Redress any wire that

24、 buzzes; replace any driver that is found to be defective. Note: A whooshing noise from the port at its resonance frequency of 50 Hz is acceptable. 6 3 4 5 6 7 8 9 10 11 12 13 15 16 17 18 12 14 10 x2 x2 x2 x8 x4 x30 x30 x4 x2 x2 x4 x24 Figure 4. Exploded View MAIN PART LIST Item Number Description P

25、art Number Qty. Note 1 DRIVER, 4.5 290722-001 8 1 2 GASKET, 4.5 259111 8 3 NETWORK, SHADING 291189-001 1 4 CONN, SPEAKON, PANEL MOUNT 254423 2 5 CLIP, TINNERMAN 187943 2 6 GRILLE, BLACK GRILLE, ARCTIC WHITE GRILLE, PRO GRAY 256350-001 256350-002 256350-004 1 7 NAMEPLATE, LOGO, BLACK NAMEPLATE, LOGO,

26、 ARCTIC WHITE 254457-001 254457-002 1 8 RING TRIM, BLACK RING TRIM, WHITE 256349-001 256349-002 1 9 SCREW, THUMB, M8 x 1.25 x 25mm 137050 2 10 SCREW, TAPP, 8-15, HEXW, SLOT 290290-12 30 11 COVER, NEUTRIK, SEALING 252384 2 12 CONN, FUSE CLIP, 1 POS, FEMALE 291366 2 13 NUT, J-TYPE, 8-32 109481 24 14 L

27、ATCH, SPRING 293290-001 4 15 CLIP, PUSH-ON, DIA .375 252379 2 16 SCREW, TAPP, 6-13x.5, PAN, XR 290294-08 4 17 CLIP, PUSH-ON, U-TYPE 290295-01 4 18 SCREW, TAPP, 6-20 x.5, PAN, XR 290296-08 2 Note: When ordering a driver, also order a driver gasket. 7 SHADING NETWORK PART LIST Item Number DescriptionP

28、art Number Qty.Note 120uF, FILM, 75V, 10%1190261 25.0uF, MYLAR, 100V, 10%1027701 3POLYSWITCH, 50V, 31mm175233-21 Figure 5. Shading Network Layout Item Number DescriptionPart Number Qty.Note 1CARTON, RSC2565921 2PACKING, PAD, DIE CUT1916692 3PACKING, CORNER BLOCK1916684 4MANUAL, OWNERS2565981 5BAG, P

29、OLY, 23 x 44 x 10.5 x 1.251006521 PACKAGING PART LIST 1 2 3 4 5 x2 x4 Figure 6. Packaging View 3 1 2 8 Date Revision Level Description of Change Change Driven By Pages Affected 02/01 00 Document release revision 00 Service manual release All 02/06 01 Added RoHS part numbers This product is now built

30、 with RoHS compliant parts. 5 07/07 02 Added new schematic ECN 3 ? SERVICE MANUAL REVISION HISTORY Specifications and Features Subject to Change Without Notice Bose Corporation The Mountain Framingham Massachusetts USA 01701 P/N 260432 REV. 02 07/2007 (P) For Technical Assistance or Part Orders, Call 1-800-233-4408