Bose built invisible amplifier service manual
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2 CONTENTS Safety Information ............................................................................................................................. 3 Electrostatic Discharge Sensitive (ESDS) Device Handling ....................................................... 4 Unit Identification ............................................................................................................................. 4 Specifications................................................................................................................................ 5-6 Technical Description ...................................................................................................................... 6 Packaging List, BUILT-INvisible ® Amplifier (See Figure 1) ........................................................... 7 Figure 1. BUILT-INvisible Amplifier Packaging View ..........................................................................7 Part List Notes .................................................................................................................................. 8 Main Part List (See Figure 2) ........................................................................................................... 9 Figure 2. BUILT-INvisible Main Assembly........................................................................................10 Electrical Part Lists ................................................................................................................... 11-89 Audio Personality PCB Acoustimass ® non-Jewel, Jewel Cube ® and MA-2J (175462-01) .... 11-25 Audio Personality PCB 3 Room System (175462-02) ............................................................. 26-37 Audio Personality PCB 102EA II and MA3 (175462-03) ........................................................... 38-52 Video Personality PCB non-Jewel and Jewel Cube (170010) .............................................. 53-61 Power Supply PCB, Audio Variation (175466) ......................................................................... 62-68 Power Supply PCB, Video Variation (170015) ........................................................................ 69-75 Power Amplifier PCB, Audio and Video (170021) ................................................................... 76-89 Disassembly/Assembly Procedures........................................................................................ 90-92 Figure 3. Remove/Replace Heatsink ..............................................................................................90 Figure 4. Remove/Replace Personality Module ..............................................................................90 Figure 5. Remove/Replace Power Amplifier ...................................................................................91 Figure 6. Remove/Replace Transformer and Power Supply ..........................................................92 Audio Systems Information............................................................................................................ 93 Audio Systems Product Overview ................................................................................................ 93 Test Procedures.....................................................................................................................94-145 Audio System Chassis Test Procedures ................................................................................ 94-99 Acoustimass Chassis (non-Jewel Cube) ...................................................................................... 94 Figure 7. BUILT-INvisible Acoustimass chassis block location diagram .........................................94 Audio System Chassis, Acoustimass Jewel Cube.............................................................100-105 Figure 8. BUILT-INvisible Jewel Cube Acoustimass chassis block location diagram ....................100 MA-2J Audio System Chassis................................................................................................106-111 Figure 9. BUILT-INvisible MA-2J Acoustimass chassis block location diagram .............................106 3 Room Audio Chassis ...........................................................................................................112-117 Figure 10. BUILT-INvisible 3 Room Audio chassis block location diagram ....................................11 2 102EA II Audio Chassis........................................................................................................... 118-123 Figure 11. BUILT-INvisible 102EA II Audio chassis block location diagram ....................................11 8 MA3 Audio Chassis............................................................................................................... 124-129 Figure 12. BUILT-INvisible MA3 Audio chassis block location diagram ..........................................124 Home Theater Systems Information ........................................................................................... 130 Product Overview........................................................................................................................ 130 Mode Selection............................................................................................................................. 130 Home Theater Systems Information ........................................................................................... 131 Video System (non-Jewel Cube) Chassis Test Procedures............................................132-138 Figure 13. BUILT-INvisible Video chassis block location diagram .................................................132 Video System (Jewel Cube) Chassis Test Procedures....................................................139-145 Figure 14. Jewel Cube Video Chassis block location diagram .....................................................139 Integrated Circuit Diagrams ........................................................................................................ 146 Schematic and PCB Laout Sheet Information ........................................................................... 147 Service Bulletins..................................................................................................................148-149 Service Manual Revision History ............................................................................................... 150
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3 CAUTION: THE BUILT-INVISIBLE ® HOME THEATER SYSTEM CONTAINS NO USER-SERVICEABLE PARTS. TO PREVENT WARRANTY INFRACTIONS, REFER SERVICING TO WARRANTY SERVICE STATIONS OR 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 CENTER OR OWNER OF THE BOSE PRODUCT, AND SHALL NOT BE REPRODUCED OR USED FOR ANY OTHER PURPOSE. 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. Use the following checks to perform these measurements: A. Leakage Current Hot Check-With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. (Do not use an isolation transformer during this test.) Use a leak- age current tester or a metering system that complies with American National Standards Institute (ANSI) C101.1 "Leakage Current for Appliances" and Underwriters Laboratories (UL) UL6500 / UL60065 / IEC 60065 paragraph 9.1.1. With the unit AC switch first in the ON position and then in OFF position, measure from a known earth ground (metal waterpipe, conduit, etc.) to all ex- posed metal parts of the unit (antennas, handle bracket, metal cabinet, screwheads, metallic overlays, control shafts, etc.), especially any exposed metal parts that offer an electrical return path to the chassis. Any current measured must not exceed 0.5 milliamp. Reverse the unit power cord plug in the outlet and repeat test. ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE UNIT TO THE CUSTOMER. B. Insulation Resistance Test Cold Check-(1) Unplug the power supply and connect a jumper wire between the two prongs of the plug. (2) Turn on the power switch of the unit. (3) Measure the resistance with an ohmmeter between the jumpered AC plug and each exposed metallic cabinet part on the unit. When testing 3 wire products, the resistance measured to the product enclosure should be between 2 and infinite MOhms. Also, the resistance measured to exposed input/output connectors should be between 4 and infinite MOhms. When testing 2 wire products, the resistance measured to exposed input/output connectors should be between 4 and infinite MOhms. If it is not within the limits specified, there is the possibility of a shock hazard, and the unit must be repaired and rechecked before it is returned to the customer.