Bose-Companion20-mss-sm 电路图 维修手册.pdf

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1、2011 Bose Corporation Reference Number 329509-SM Rev. 02 Service Manual Companion 20 Multimedia Speaker System Bose Triport OE Headphones Electronic Copy Only RadioFans.CN 收音机爱 好者资料库 2 CONTENTS Warranty .3 Safety Information.3 Product Description .3 Date of Manufacture Information .3 Serviceability.

2、3 Serial Number Information.3 Specifications.4 Packaging Part List, Companion 20 (see Figure 1) .5 Figure 1. Companion 20 Packaged System.5 I/O Label Replacement.6 Listening Test Procedure . 7-8 Service Manual Revision History .9 CAUTION: The Companion 20 multimedia speakers system contains no user-

3、serviceable parts. To prevent warranty infractions, refer servicing to factory service. 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 BOSE SERVICE CENT

4、ER OR OWNER OF THE BOSE PRODUCT, AND SHALL NOT BE REPRODUCED OR USED FOR ANY OTHER PURPOSE. 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 on the PCBs are listed in the Electri

5、cal Part list. 3. 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. 4. This part is referenced for informational purposes only. It is not stocked a

6、s a repair part. Refer to the next higher assembly for a replacement part. 5. The part number listed is an assembly part number. The individual parts of the assembly might not be available separately. RadioFans.CN 收音机爱 好者资料库 3 The Companion 20 multimedia speaker system is covered by a 1-year transfe

7、rrable, limited warranty. WARRANTY Serial Number and Date of Manufacture Information The date of manufacture (DOM) and the product code are encoded within the serial number located on the product label. Serial Number Example - 055102Z10630052BE The first 6 characters identify the product code - 0551

8、02 Characters 8 to 11 identify the DOM - 1063 1063 = the 63rd day of 2011 The Compainion 20 is a two-piece computer speaker system. - Acoustic performance that meets or exceeds Wave Music System - An elegant industrial design, form factor, and controls - An industrial design that evolves the Compani

9、on family line - Two 3.5 mm inputs and one headphone jack - Includes a control pod similar to Companion 3 and 5 Product Description Serviceability The system is not serviceable, the rear enclosure is attached to the front panel and it is not possible to repair to board or component level. Left and r

10、ight speakers, control pod, speaker grille, power supply and audio cable are available as service parts (see page 5). SAFETY INFORMATION 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 ha

11、ve critical characteristics recommended by the manufacturer. RadioFans.CN 收音机爱 好者资料库 4 SPECIFICATIONS Mechanical Dimensions: Individual Speaker: 8.6“ H x 3.5” W x 4.4” D (22 x 9 x 15 cm) Weight: One speaker: 2.5 lbs (1.1 kg) Control Pod: 0.5 lbs (.2 kg) Electrical Power Pack Rating:AC Input: 100 VAC

12、 to 240VAC AC Input Freq: 50Hz to 60Hz AC Input Current: 1.5A (rms) max. for 115VAC .8A (rms) max. for 230VAC Speaker Inputs: Input Power: 18V, 2.0A Input Signal: 2.25V Maximum input Driver Complement: Two 2.75 inch (70mm) high excursion, wide-range transducers 5 PACKAGING PART LIST Companion 20 Fig

13、ure 1. Packaged System Item Description Part Number Notes 1 PC SPEAKER ASSY, LEFT 346248-002S 2 PC SPEAKER ASSY, RIGHT 346248-001S 3 GRILLE ASSY (includes logo and tape) 346310-001S 4 CONTROL POD 346309-001S 5 POWER SUPPLY 330733-0020 3, 6 INPUT CABLE 346312-001S 7 LINE CORD, US LINE CORD, EU LINE C

14、ORD, UK LINE CORD, JP LINE CORD, AP 279101-1310 280135-1310 280138-1310 280136-1310 284243-1310 3, 8 CARTON 342934-0010 9 PACKAGING TRAY, TOP 345628-0010 10 PACKAGING TRAY, BOTTOM 345629-0010 - I/O LABEL 343766-0010 - BAG, SPEAKER ASSEMBLY 347853-0010 - COMMITMENT LETTER 325526-0010 - OWNERS GUIDE,

15、US OWNERS GUIDE, EU OWNERS GUIDE, AP 344837-0010 344838-0010 344839-0010 6 1 2 57 4 10 8 3 9 6 I/O LABEL REPLACEMENT Companion 20 I/O label replacement Equipment Required -Hot Air Gun -Small Flat blade screw driver or dental pick -New I/O Label, P/N 343766-0010 1. I/O label removal 1.1 Using a hot a

16、ir gun, heat the I/O label surface for 3 to 5 seconds. 1.2 Use a small flat head screwdriver or dental pick to lift the top right corner of the label. 1.3 Once the right top corner is lifted, continue lifting by hand to remove it fully away from the assembly. 1.4 Remove all glue left on the assembly

17、 by hand, then clean using a duster cloth. 2. I/O label replacement 2.1 Use Bose part number 343766-0010 as the replacement I/O label. 2.2 Place the new label one the assembly starting from the bottom. 2.3 Once the label is in place, apply an even amount of pressure for 4 to 6 seconds across all are

18、as of the label. 7 LISTENING TEST PROCEDURE Test Equipment required: Audio Signal Generator Test Set up Connect speaker cable from the left speaker to the right speaker. Connect an audio signal to the audio input cable and connect the cable to the input jack on the left speaker. Connect the power ad

19、apter to the power input on the right speaker. NOTE: For all listening tests (air leak and sweep test), listening should be done at a distance of 2 feet (0.6 meters) in a quiet environment. Listening distance must be decreased to 1 foot (0.3 meters) in a noisy environment. All testing is to be perfo

20、rmed on each individual speaker of the pair, with the volume control knob set to the maximum volume setting and both A and B inputs connected. There should be no audible distortion during any test. 1. Air Leak Test 1.1 Apply a 50 mVrms, 50 Hz audio signal to the input of the right speaker. 1.2 Set t

21、he volume control pod to the maximum volume setting. 1.3 Listen carefully for air leaks from the cabinet seams around the transducer and at the input terminals. 1.4 Replace system if air leaks can be heard. 2. Frequency Sweep test 2.1 Apply a 50 mVrms, 35 Hz audio signal to the input. 2.2 Set the vo

22、lume knob to the maximum volume setting. 2.3 Listen carefully as you sweep the bass module from 35 Hz to 3 kHz, then from 3 kHz to 35 Hz. 2.4 Listen carefully for buzzes, rattles, or other extraneous noises from the speaker cabinet. A slight whooshing sound from the port (at approximately 70 Hz) is

23、acceptable. 2.5 Replace system if buzzes or rattles can be heard from the cabinet. 8 3. Control Pod Functional Test 3.1 With the system completely set up, turn on the system by tapping on the control pod. Confirm system is on by looking for the white LED. 3.2 Set the volume knob on the control pod t

24、o maximum (fully clockwise). 3.3 Touch the center of the control pod . Verify that the LED turns on and off with each touch. 3.4 Lower the volume to minimum (fully counter clockwise) on the control pod and connect an auido source to the “Audio Input” jack. 3.5 Adjust the volume control to a comforta

25、ble listening level and verify that the sound is muted and un-muted when the LED is off and that there is no audible pop when switching from mute to un- mute. 3.6 Rotate the control pod ring, verify that the volume increases and decreases and that the ring moves smoothly. 3.7 Replace any control pod

26、 that is defective. 4. Control Pod AUX and Headphone Test 4.1 With the system off (no LED), connect an audio source to the AUX connector on the control pod. 4.2 Turn on the system and set the volume to a cmfortable listening level. 4.3 Confirm audio can be heard. 4.4 Connect a headset to the headpho

27、ne input on the control pod. 4.5 Confirm audio from the speakers are muted when the headphones are connected to the control pod. 4.6 Confirm audio can be heard from the headphones. Test Procedures 9 SERVICE MANUAL REVISION HISTORY Date Revision Level Description of Change Change Driven By Pages Affe

28、cted 7/11/11 00 Document released at revision 00 Service Manual release All 12/02/11 01 Test procedure referred to bass module and satellites. Updated procedure with corrected information. Errors in original manual 8 1/31/13 02 Input power rating corrected. Error in original manual 4 SPECIFICATIONS AND FEATURES SUBJECT TO CHANGE WITHOUT NOTICE Bose Corporation The Mountain Framingham Massachusetts USA 01701 P/N:329509-SM Rev. 02 7/2011 (H)