Bose 1801 1800 service manual

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1 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. Contents Specifications ................................................................................................................................... 2 Safety Information ............................................................................................................................ 3 Electrostatic Discharge Sensitive (ESDS) Device Handling ........................................................ 4 Disassembly/Assembly Procedures ........................................................................................... 5-8 Test Procedures ............................................................................................................................... 9 Figure 1. 1801 Component Location ..............................................................................................10 Figure 2. 1801 Side View ...............................................................................................................10 Figure 3. 1800 Front Panel ............................................................................................................11 Figure 4. 1800 Rear View of Front Panel .......................................................................................11 Figure 5. 1801 Rear View of Front Panel .......................................................................................11 Figure 6. 1800 Rear Panel .............................................................................................................12 Figure 7. 1801 Rear Panel .............................................................................................................12 Part List Notes ................................................................................................................................ 13 Figure 8. 1801 Front Panel ............................................................................................................13 Part List ...................................................................................................................................... 14-17 Figure 9. 1801/1800 Block Diagram ...............................................................................................18 Figure 10. LED PCB Layout ...........................................................................................................19 Figure 11. LED PCB Schematic Diagram ......................................................................................20 Figure 12. Amplifier Schematic Diagram ........................................................................................21 Figure 13. Amplifier PCB Layout ....................................................................................................22 Troubleshooting Guide .................................................................................................................. 23 Voltage Conversion Instructions .................................................................................................. 24 Service Bulletin ......................................................................................................................... 25-28

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2 SPECIFICATIONS Mechanical Dimensions:1801 18007 3/16" H x 18" W x 18 1/2" D (Including Knobs) 81/4"H x 19"W x 15"D (not including handles) Weight:1801 180082 lbs 95 lbs (shipping) 80 lbs 91 lbs (shipping) Power Requirements Voltage: 105-125 AC USA, 210-250 AC EUR Frequency: 50-60 Hz Power Consumption: Minimum 60 watts Normal 1000 watts Maximum 1960 watts Integral Design-„¢ Amplifier Output : (both channels operating )250/250 watts @8 ohms 400/400 watts @4 ohms Harmonic Distortion: (THD) @ 250 wattsLess Than .15% (20Hz-5kHz) Less Than .5% (5kHz-10kHz) IM Distortion: (4:1 60-7kHz) 150 wattsLess Than .15% Frequency Response: 20Hz-10kHz ±.25dB 10kHz-15kHz ±.7dB 15kHz-20kHz ±1dB Signal to Noise Ratio: (unweighted)-100dB £.5mV across 8W at zero volume Load Impedance: 4 ohms or higher Input Sensitivity: 1.5 Vrms for 250 watts output into 8 ohms Input Impedance: 50,000 ohms or higher