Bose 802c Service Manual

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1
©
1997 Bose Corporation
Part Number 129292 REV 03
Service Manual
802C System Controller
Original and SMD Version
®
®
Units with serial numbers beginning with 100000 are the original 802C's.
Units with serial numbers beginning with 200000 are the new SMD 802C's.
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Summary of Contents

Page 1 - Original and SMD Version

1©1997 Bose CorporationPart Number 129292 REV 03Service Manual802C System ControllerOriginal and SMD Version®® Units with serial numbers beginning wi

Page 2 - Contents

10TEST PROCEDURES4.4 Apply a 100Hz, 500mVrms signal tothe input of the 802C.4.5 Reference a dB meter to the 302 AMPoutput jacks (while in the Bi-Amp

Page 3 - SAFETY INFORMATION

111. This part is not normally available from Customer Service. Approval from the Field ServiceManager is required before ordering.2. The individual

Page 4 - DEVICE HANDLING

12MAIN PART LISTReferenceDesignatorDescription Part Number NoteJ1, 3 CONNECTOR, XLR,INSERT121823J2, 4-8 JACK, PHONE 121570J9 WAFER, 7PIN, (2461) 123

Page 5 - SPECIFICATIONS

Figure 4. Main Parts Exploded View13

Page 6 - TECHNICAL DESCRIPTION

14ELECTRICAL PART LISTResistorsReferenceDesignatorDescription PartNumberNoteR1, 2 2.7kΩ, 1/4 Watt, 5% 117704-1212725R3, 4 3.3kΩ, 1/4 Watt, 5% 117704-1

Page 7

15ELECTRICAL PART LISTResistors (continued)ReferenceDesignatorDescription PartNumberNoteR144, 244 56kΩ, 1/4 Watt, 2% 117704-1215632R148, 248 4.12kΩ, 1

Page 8

16ELECTRICAL PART LISTCapacitorsReferenceDesignatorDescription PartNumberNoteC1 .0047uF, 220V.0047uF, 1.4KV, 100/120V1209931034473C2, 3 .015uF, FILM 1

Page 9

17ELECTRICAL PART LISTDiodesTransistorsIntegrated CircuitsReferenceDesignatorDescription PartNumberNoteU1, 8, 9 QUAD OP AMP, LS-404 120535/

Page 10 - TEST PROCEDURES

18VOLTAGE CONVERSION INSTRUCTIONS 220 Volt to 110 Volt Conversion 110 Volt to 220 Volt Conversion1. 220 Volt to 110 Volt Convers

Page 11 - PART LIST NOTES

Figure 6. Top Cover Connection Diagram19

Page 12 - MAIN PART LIST

2ContentsSafety Information...

Page 13

SPECIFICATIONS AND FEATURES SUBJECT TO CHANGE WITHOUT NOTICE®®Bose CorporationThe MountainFramingham Massachusetts USA 01701P/N 129292 REV. 03 10/97 F

Page 14 - ELECTRICAL PART LIST

3SAFETY INFORMATION 1. Parts that have special safety characteristics are identified by the symbol on schematics or

Page 15

4DEVICE HANDLINGELECTROSTATIC DISCHARGE SENSITIVE (ESDS)This unit contains ESDS devices. We recommend the following precautions when repairing,replaci

Page 16

5SPECIFICATIONSInput Connections:(per channel)One (1) balanced female XLR connectorOne (1) unbalanced 1/4" phone jackOutput Connections:(per chan

Page 17

6The 802®C System Controller is a sophisticated signal processing device which combines thefunctions of three equalizers, an automatic switching circu

Page 18

7DISASSEMBLY/ASSEMBLY PROCEDURESFigure 1. Locking Tab Screw LocationNote: Refer to the Figures (2 and 3) for thefollowing procedures.1. Top Cover Re

Page 19

Figure 2. Original 802C PCB Exploded ViewFigure 3. SMD 802C PCB Exploded View8

Page 20 - The Mountain

9TEST PROCEDURES4. Bi-Amp Frequency ResponseNote: This test is performed with both the802 AMP and the 302 AMP output jacksused at the same time.4.1

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