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1、 1998 Bose Corporation Model 1600VI and 1800VI Professional Stereo Power Amplifiers Part Number 199747 Rev. 00 Service Manual RadioFans.CN 2 CONTENTS Safety Information. 4 Electrostatic Discharge Sensitive (ESDS) Device Handling . 4 1800VI Specifications. 5-6 1600VI Specifications. 7-8 Figure 1. 160
2、0VI and 1800VI Block Diagram . 9 Theory of Operation. 10-18 Disassembly/Assembly Procedures . 19-30 Figure 2. Cover Removal Screw Location Side View. 19 Figure 3. Cover Attaching Hardware . 20 Figure 4. Rear View - Attaching Hardware. 20 Figure 5. 240V Configuration . 21 Figure 6. 1600VI and 1800VI
3、Amplifier Assembly . 21 Figure 7. Bottom Mounted Components . 22 Figure 8. Side View - Bottom Mounted Components . 27 Figure 9. Heatsink Bridge. 27 Figure 10. Input Module Screw Location. 29 Test Procedures .31-33 Figure 11. EQ Card Placement . 31 Frequency Response Test Table . 32 Part List Notes.
4、34 Main Part List. 35-37 Figure 12. Amplifier Test Setup Diagram . 31 Figure 13. Front Panel Views, 100V and 120V Variation, 240V Variation. 37 Figure 14. Back Panel View . 37 Figure 15. Cross Section View. 38 Figure 16. 1600VI and 1800VI Amplifier Top View . 39 Figure 17. 1600VI and 1800VI, Amplifi
5、er Assembly Removed View . 40 Electrical Part List. 41-54 Packing List . 55 Figure 18. 1600VI and 1800VI Amplifiers Packing Diagram . 55 Wiring Diagrams.56-57 Figure 19. 1600VI and 1800VI Wiring Diagram. 56 Figure 20. 1600VI and 1800VI 240V Wiring Diagram . 57 IC Pinout Diagrams . 58-59 RadioFans.CN
6、 3 RadioFans.CN 4 SAFETY INFORMATION ELECTROSTATIC DISCHARGE SENSITIVE (ESDS) DEVICE HANDLING This unit contains ESDS devices. We recommend the following precautions when repairing, replacing or transporting ESDS devices: Perform work at an electrically grounded work station. Wear wrist straps that
7、connect to the station or heel straps that connect to conductive floor mats. Avoid touching the leads or contacts of ESDS devices or PC boards even if properly grounded. Handle boards by the edges only. Transport or store ESDS devices in ESD protective bags, bins, or totes. Do not insert unpro- tect
8、ed devices into materials such as plastic, polystyrene foam, clear plastic bags, bubble wrap or plastic trays. 1. Parts that have special safety characteristics are identified by the symbol on schemat- ics or by special notes on the parts list. Use only replacement parts that have critical character
9、- istics 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 Chec
10、k-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 leakage current tester or a metering system that complies with American National Standards Institute (ANSI) C101.1 Leakage Current for Appliance
11、s and Underwriters Laboratories (UL) 1492 (71). 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 exposed metal parts of the unit (antennas, handle bracket, metal cabinet, screwheads, metallic overlays
12、, 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 POTEN
13、TIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RE- TURNING 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 ohmme
14、ter between the jumpered AC plug and each exposed metallic cabinet part on the unit. When the exposed metallic part has a return path to the chassis, the reading should be between 1 and 5.2 Megohms. When there is no return path to the chassis, the reading must be infinite. If it is not within the li
15、mits specified, there is the possibility of a shock hazard, and the unit must be repaired and rechecked before it is returned to the customer. RadioFans.CN 5 Size:3.5H (2U) x 19W x 13.25D 89mm x 483mm x 337mm Weight:Net: 33 lbs. (15 kg) Shipping weight: 39 lbs. (17.7 kg) Display:7 LED indicators per
16、 channel 1 green - READY, 5 yellow - SIGNAL, 1 red - CLIP/PROTECT Operating Temperature:0 to 50 C, up to 85% RH Performance Specifications Continuous Average Output Power, both channels driven:450 Watts per channel into 8 Ohms from 20 Hz to 20 kHz, with no more than 0.2% THD 600 Watts per channel in
17、to 4 Ohms from 20 Hz to 20 kHz, with no more than 0.2% THD Bridged Mono Operation:1400 Watts into 8 Ohms from 20 Hz to 20 kHz, with no more than 0.2% THD Voltage Output:60 V line voltage per channel into 8 Ohms 49 V line voltage per channel into 4 Ohms Dynamic Headroom:1.0 dB nominal Power Bandwidth
18、:5 Hz to 40 kHz (+0, -3 dB) Frequency Response:20 Hz to 20 kHz (0.75 dB) Channel Separation: 65 dB 1 kHz; 55 dB 10 kHz Damping Factor: 170 Input Impedance:25k Ohms unbalanced, each leg to ground, 50k Ohms balanced *Sensitivity:High:.775 Vrms for rated power into 4 Ohms 1 kHz, 57 mVrms for 1W into 4
19、Ohms 1 kHz Low:1.5 Vrms for rated power into 4 Ohms 1 kHz, 116 mVrms for 1W into 4 Ohms 1 kHz *Gain:High:36.0 dB (0.5 dB) Low:30.3 dB (0.5 dB) 1800VI SPECIFICATIONS *The amplifier sensitivity is set to 0.775V rms for rated output. To reduce the sensitivity by 6 dB to 1.5V rms, remove JP100 (CH1) and
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