Bose-301-Serie-II-Service-Manual 电路图 维修手册.pdf

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1、1 SPECIFICATIONS Driver Complement:One 8 long excursion woofer Two 3 high sensitivity tweeters Nominal Impedance:8 Dual Frequency Crossover:Woofer Transition 2.5kHz Tweeter Transition 1.5kHz Amplifier Power Requirements:10 watts minimum 75 watts maximum Cabinet:Walnut grain vinyl veneer Dimensions:1

2、0 1/2 H x 17 W x 9 1/2 D (27 x 43 x 24) cm Weight:18 1/2 lbs. (7.1 kg) Shipping Weight:40 lbs (18.18 kg) PROPRIETARY INFORMATION THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF BOSE CORPORATION WHICH IS BEING FURNISHED ONLY FOR THE PURPOSE OF SERVICING THE IDENTIFIED BOSE PRODUCT BY AN AUTHORIZED

3、BOSE SERVICE CENTER OR OWNER OF THE BOSE PRODUCT, AND SHALL NOT BE REPRODUCED OR USED FOR ANY OTHER PURPOSE. Contents Specifications. 1 Disassembly/Assembly Procedures . 2 Test Procedures . 3 Main Assembly Part List. 4 Figure 1. Exploded View . 4 Crossover Part List . 5 Figure 2. Later Version Schem

4、atic Diagram . 5 Figure 3. Early Version Schematic Diagram . 5 Packaging Part List. 5 2 DISASSEMBLY/ASSEMBLY PROCEDURES Note: Numbers in parenthesis refer to call outs in figure 1. 1. Front and Side Grille Removal 1.1 Grasp the grille (4) (3) by an edge and pull it off. 2. Front and Side Grille Repl

5、acement 2.1 Line up the grille mounting feet with the grille attachments (10) on the cabinet and press the grille onto the cabinet. 3. Woofer Removal / Crossover Access 3.1 Perform procedure 1 first. 3.2 Remove the four screws (12) that secure the woofer (1) to the cabinet. 3.3 Lift the woofer out o

6、f the cabinet and cut the wires as close as possible to the woofer terminals. 3.4 The crossover components are located on the back wall of the cabinet. 4. Woofer Replacement 4.1 Attach the wires to the replacement woofer (1). See the schematic diagram on page 5 for the wiring configuration. 4.2 Repl

7、ace the four screws (12) that secure the woofer to the cabinet. 5. Tweeter Removal 5.1 Perform procedure 1 first. 5.2 Remove the screw (7) that secures the tweeter to the tweeter mounting bracket (6). 5.3 Cut the wires as close as possible to the tweeter terminals. 6. Tweeter Replacement 6.1 Attach

8、the wires to the replacement tweeter. Refer to the schematic diagram on page 5 for the wiring configuration. 6.2 Replace the screw (7) that secures the tweeter to the tweeter mounting bracket (6). 7. Terminal Cup Removal 7.1 Remove the four screws (15) that secure the terminal cup (16) to the cabine

9、t. 7.2 Cut the wires as close as possible to the terminal cup. 8. Terminal Cup Replacement 8.1 Attach the wires to the replacement terminal cup (16). Refer to the schematic diagram on page 5 for the wiring configura- tion. 8.2 Replace the four screws (15) that secure the terminal cup to the cabinet.

10、 9. Vertical Trim Strip Removal 9.1 Grasp an edge of the vertical trim strip (9) an pull it off. 10. Vertical Trim Strip Replacement 10.1 Line up the vertical trim strip (9) with the holes in the cabinet and press it into place. 3 TEST PROCEDURES 1. Phase Test 1.1 Momentarily apply 8 1Vdc to the spe

11、aker input terminals. Observe polarity when connecting the dc power supply. The woofer should move outward. 1.2 Momentarily apply the positive side of an 8 1Vdc power supply to the red wire that is attached to the tweeter. Connect the negative side of the power supply to the speakers negative input

12、terminal. The tweeters should move outward. 2. Air Leak Test 2.1 Apply an 8Vrms, 45Hz signal to the speaker input terminal. 2.2 Listen for air leaks around the woofer, tweeter mounting brackets and the terminal cup. 3. Rub and Tick Test 3.1 Apply an 8Vrms, 10Hz signal to the speaker input terminals.

13、 3.2 No extraneous noise such as rubbing, scraping or ticking should be heard. Note: To distinguish between normal suspension noise and rubs or ticks, dis- place the cone of the woofer slightly with your fingers. If the noise can be made to go away or get worse, its a rub or tick and the woofer shou

14、ld be replaced. If the noise stays the same, its normal suspension noise and it will not be heard with program material. 4. Power Sweep Test 4.1 Apply an 8Vrms, 10Hz signal to the speaker input terminals. 4.2 Sweep the speaker from 10Hz to 3kHz. 4.3 Lower the applied voltage to 4Vrms and continue to

15、 sweep the speaker to 5kHz. 4.4 Listen for any buzzes, rattles or other extraneous noises from the speaker. Replace any woofer or tweeter that fails this test. Tighten any screws or redress any wires that buzz. MAIN ASSEMBLY PART LIST Item Number DescriptionPart Number 1Woofer135372 2Tweeter130714 o

16、r 124618 3Grille, Side, Tan Grille, Side, Black Grille, Side, White Grille, Side, Green Grille, Side, Blue Grille, Side, Red Grille, Side, Silver 120705-2 120705-3 120705-4 120705-5 120705-6 120705-7 120705-8 4Grille, Front, Dark Brown Grille, Front, Black Grille, Front, White Grille, Front, Green G

17、rille, Front, Blue Grille, Front, Red Grille, Front, Silver 120704-1 120704-3 120704-4 120704-5 120704-6 120704-7 120704-8 5Screw, Bracket Mount, Hex Wash108877 6Tweeter Mounting Bracket128501 7Screw, Tweeter Mount, Mach, Hex Wash 121441-08 8 Port118752-0 9Vertical Trim Strip120707 10Rubber Grille A

18、ttachment117995 11Trim Ring, Woofer120709 12Screw, Wood, #8 x 20 mm L129027-12 13Woofer Gasket120715 14Grille Mounting Foot120706 15Screw , SH Met, #6-20 x 5/8103122-10 16Terminal120711 Figure 1. Exploded View 4 5 CROSSOVER PART LIST DescriptionPart Number Note 3.4uf, 50V106825Match 7.5119094-7R5Mat

19、ch 3.7uf, 50V107055Boost 6.2119094-6R2Boost 3uf, 50V104130Cut 9.1119094-9R1Cut 2.4uf, 50V104131D Cut 13119094-130D Cut RT1, Lamp117805 + _ YL GN WOOFER C1 R1 RT1 UPPER? TWEETER LOWER? TWEETER GY BK + + + _ _ _ RD Figure 2. Later Version Schematic Diagram Figure 3. Early Version Schematic Diagram PAC

20、KAGING PART LIST DescriptionPart Number Qty Owners Guide1207491 Carton1422531 Filler1299312 Bag1065951 Note: 1.5A, 250V fuse kit, part number 108938-4 + _ YL GN WOOFER C1 R1 UPPER? TWEETER LOWER? TWEETER GY BK + + + _ _ _ RD 1996 Bose CorporationService Manual Part Number 122115 301 Series II Direct/Reflecting Loudspeaker BOSE CORPORATION THE MOUNTAIN FRAMINGHAM, MASSACHUSETTS USA 01701 SPECIFICATIONS AND FEATURES SUBJECT TO CHANGE WITHOUT NOTICE P/N 122115 10/96: REV. 02 FOR TECHNICAL ASSISTANCE OR PART ORDERS, CALL 1-800-367-4008