Bose-1800V-pwr-sup5 电路图 维修手册.pdf

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1、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 PUR

2、POSE. CAUTION: THE EQ PCB ASSEMBLIES CONTAIN NO USER-SERVICEABLE PARTS. TO PREVENT WARRANTY INFRACTIONS, REFER SERVICING TO WARRANTY SERVICE STATIONS OR FACTORY SERVICE. Contents Safety Information. 2 Electrostatic Discharge Sensitive (ESDS) Device Handling . 3 Supplement Description. 3 Test Procedu

3、res . 4 Part List Notes. 5 Electrical Part List.6-7 PCB Layout. 8 Figure 1. PCB SMD Bottom View . 8 Figure 2. PCB Component Top View. 8 Figure 3. Model 8 and Model 25/32 Schematic Diagram . 9 RadioFans.CN 收音机爱 好者资料库 2 1. Parts that have special safety characteristics are identified by the symbol on

4、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 un

5、it 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 leakage current tester or a metering syst

6、em that complies with American National Standards Institute (ANSI) C101.1 “Leakage Current for Appliances” and Underwriters Laboratories (UL) 1492 (71). With the unit AC switch first in the ON position, then in the OFF position, measure from a known earth ground (metal water pipe, conduit, etc.) to

7、all exposed 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 p

8、lug in the outlet and repeat test. ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZ- ARD 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

9、 two prongs of the plug. (2) Turn on the power switch of the unit. (3) Measure the resistance with an ohmmeter be- tween 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 M

10、egohms. When there is no return path to the chassis, the reading must be “infinite”. If it is not within the limits specified, there is the possibility of a shock hazard, and the unit must be repaired and re- checked before it is returned to the customer. SAFETY INFORMATION RadioFans.CN 收音机爱 好者资料库 3

11、 ELECTROSTATIC DISCHARGE SENSITIVE (ESDS) 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 connect to the station or heel straps that connect

12、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- tected devices into materials such as plastic, polystyr

13、ene foam, clear plastic bags, bubble wrap or plastic trays. DEVICE HANDLING This supplement should be used along with the 1800V EQ PCB service manual part number 181812-S2. The disassembly/assembly procedures, and packing part list should be used along with the information in this manual. The test p

14、rocedures were included in this manual for your convenience. SUPPLEMENT DESCRIPTION RadioFans.CN 收音机爱 好者资料库 4 Frequency Output Tolerence 95Hz+12.3dB1.5dB 250Hz+4.4dB1.5dB 1kHz0dB Reference - 2kHz+1.7dB1.5dB 4kHz+7.6dB1.5dB 8kHz+12.0dB1.5dB 12.5kHz+15.0dB2.5dB Frequency Output Tolerence 95Hz+12.3dB1.

15、5dB 250Hz+4.4dB1.5dB 1kHz0dB Reference - 2kHz+1.7dB1.5dB 4kHz+7.6dB1.5dB 8kHz+12.0dB1.5dB 12.5kHz+15.0dB2.5dB Frequency Output Tolerence 95Hz+11.3dB1.5dB 250Hz+4.5dB1.5dB 1kHz0dB Reference - 2kHz+3.0dB1.5dB 4kHz+7.0dB1.5dB 8kHz+10.5dB1.5dB 12.5kHz+11.75dB2.5dB TEST PROCEDURES 2.2 Adjust the amplifie

16、r volume controls to maximum. No EQ card installed. 2.3 Reference a dB meter to the output of the amplifier. 2.4 Shut off the amplifier and insert the EQ card according to the assembly procedure. 2.5 Turn on the amplifier and measure the gain. There should be a -4.8dB change in gain at the output. 2

17、.6 Reference a dB meter and measure the response of the EQ card according to the Model 25/32 Full Range Response chart below. 1.7 Shut off the amplifier. Open the input panel and switch the high frequency/full range switch to the high frequency position. 1.8 Measure the response according to the Mod

18、el 25/32 High Frequency Response chart below. 2.7 Shut off the amplifier. Open the input panel and switch the high frequency/full range switch to the high frequency position. 2.8 Measure the response according to the Model 25/32 High Frequency Response chart below. 1. Model 8 EQ PCB Response Test 1.

19、1 Apply a signal of 1kHz at an input level of 100mVrms. 1.2 Adjust the amplifier volume controls to maximum. No EQ card installed. 1.3 Reference a dB meter to the output of the amplifier. 1.4 Shut off the amplifier and insert the EQ card according to the assembly procedure. 1.5 Turn on the amplifier

20、 and measure the gain. There should be a -3.5dB change in gain at the output. 1.6 Reference a dB meter and measure the response of the EQ card according to the Model 8 Full Range Response chart below. 2. Model 25/32 EQ PCB Response Test 2.1 Apply a signal of 1kHz at an input level of 100mVrms. Frequ

21、ency Output Tolerence 95Hz+11.3dB1.5dB 250Hz+4.5dB1.5dB 1kHz0dB Reference - 2kHz+3.0dB1.5dB 4kHz+7.0dB1.5dB 8kHz+10.5dB1.5dB 12.5kHz+11.75dB2.5dB Model 8 Full Range Response ChartModel 25/32 Full Range Response Chart Model 25/32 High Freq. Response Chart Model 8 High Freq. Response Chart 5 PART LIST

22、 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 located on the PCB are listed in the Electrical Part Lists. 3. This part is critical for safety purposes. Failure to use a substitute repl

23、acement with the same safety characteristics as the recommended replacement part might create shock, fire and or other hazards. 4. The reference designators that are in bold print are used on the model 8 EQ PCB assembly. 6 ELECTRICAL PART LIST Resistors Reference Designator DescriptionPart Number No

24、te R120.0K, 1206, 1/8W, 1%124894-2002 R2, 16, 17, 1910.0K, 1206, 1/8W, 1%124894-10024 R214.0K, 1206, 1/8W, 1%124894-14024 R3, 1422.1K, 1206, 1/8W, 1%124894-2212 R3, 134.12K, 1206, 1/8W, 1%124894-41214 R5, 278.25K, 1206, 1/8W, 1%124894-8251 R5, 25887, 1206, 1/8W, 1%124894-88704 R911.5K, 1206, 1/8W, 1

25、%124894-1152 R11110K, 1206, 1/8W, 1%124894-1103 R12150K, 1206, 1/8W, 1%124894-1503 R12100K, 1206, 1/8W, 1%124894-10034 R13, 16, 204.99K, 1206, 1/8W, 1%124894-49914 R1416.5K, 1206, 1/8W, 1%124894-16524 R17, 227.15K, 1206, 1/8W, 1%124894-71514 R18, 194.75K, 1206, 1/8W, 1%124894-4751 R223.92K, 1206, 1/

26、8W, 1%124894-3921 R25, 35, 36, 40-45JUMPER, CHIP124896 R266.19K, 1206, 1/8W, 1%124894-6191 R2715.0K, 1206, 1/8W, 1%124894-15024 R3121.5K, 1206, 1/8W, 1%124894-2152 R3278.7K, 1206, 1/8W, 1%124894-7872 R37, 3847.0K, 1206, 1/8W, 5%124895-4735 Capacitors Reference Designator DescriptionPart Number Note

27、C2.068uF, BOX, 85, 63V, 5%137127-683 C2, 8, 10.047uF, BOX, 85, 63V, 5%137127-4734 C3.27uF, BOX, 85, 50V, 5%137127-274 C3.33uF, BOX, 85, 50V, 5%137127-3344 C6.0033uF, BOX, 85, 100V, 5% 137127-3324 C10.056uF, BOX, 85, 63V, 5%137127-563 C11.033uF, BOX, 85, 63V, 5%137127-3334 C11, 12.0056uF, BOX, 85, 10

28、0V, 5% 137127-562 C20, 22.022uF, BOX, 85, 100V, 5% 137127-223 C24, 26, 48-5110000pF, CHIP, 5%124959-103 C25, 27.0027uF, BOX, 85, 100V, 5% 137127-272 C27.0022uF, BOX, 85, 100V, 5% 137127-2224 7 ELECTRICAL PART LIST Diodes Reference Designator DescriptionPart Number Note D1, 2, 3, 51N4148, 52MM, AXIAL

29、121501 D4, 6ZEN, 18V, 1W, 5%, 1N4746A 116995-4746A Integrated Circuits Reference Designator DescriptionPart Number Note U1, 2IC, OP AMP, QUAD144008 U3IC, SWITCH, ACTIVE, SIP-8, BA3128N 177292 PCB LAYOUT Figure 1. PCB SMD Bottom View Figure 2. PCB Component Top View 8 9 Figure 3. Model 8 and Model 25

30、/32 Schematic Diagram 2 R 54 3 1 234 5 678 A B C DD C B A FRAMINGHAM, MA 01701-9168 87 6 1 +15V +15V +15V +15V +15V -15V -15V -15V -15V -15V R39 NU R45 0 R44 0 R41 0 R40 0 C27 OPT R42 0 R43 0 11 4 1 2 3 U1 RC4156N D6 1N4746A D4 1N4746A D5 1N4148 D3 1N4148 D2 1N4148 D1 1N4148 C26 .01 C24 .01 RC4156N1

31、4 13 12U2 R34 N.U. R36 0 R35 0 R38 47k C1 N.U. C2 .068 R1 20k R2 OPT C3 OPT R3 OPT R4 N.U. C5 N.U. RC4156N 8 9 10 U1 R5 OPT C6 OPT R6 N.U. R7 N.U. C4 N.U. C7 N.U. C8 .047 C10 OPT 11 4 1 2 3 U2 RC4156N R11 110K R13 OPT R8 N.U. C9 N.U. R12 OPT R10 N.U. R9 11.5K R16 OPT R15 OPT R18 OPT C13 N.U. R14 OPT

32、 R19 OPT R17 OPT RC4156N 7 6 5U1 C12 .0056 C11 OPT C14 N.U. C15 N.U. RC4156N 8 9 10 U2 R25 OPT R27 OPT R21 N.U. C16 N.U. R26 6.19K R23 N.U. R24 N.U. R20 4.99k R22 OPT C17 N.U. C25 .0027 R33 N.U. RC4156N7 6 5 U2 6J1 5J1 2J1 3 J1 R37 47k RC4156N14 13 12 U1 C19 N.U. C18 N.U. C20 .022 1 5 4 8 6 7 3 2 U3

33、 NJM2120 VEE VCC -INB +INB -INA +INA SW OUT R31 21.5K 7 J1 R32 78.7K R30 N.U. R28 N.U. C23 N.U. C22 .022 C21 N.U. R29 N.U. 1J1 C48 .01 C49 .01 C50 .01 C51 .01 4J1 Model 8, and Model 25/32 ? EQ PCB 184844? Page 1 of 1 Service Manual 181812-S5 REV 00 Note: See the part list for the proper value of OPT

34、 components. 1800 SERIES V PROFESSIONAL AMPLIFIER 5 8 12 20 40 OFF0 .25 1 2 3.5 5 8 12 20 40 OFF0 .25 1 2 3.5 dBPEAK/PROTECT ON STANDBY PEAK/PROTECT 1 CHANNEL 2 0 3 6 9 12 ON T Model 1800-V Professional Stereo Power Amplifier EQ PCB Assemblies Supplement 1997 Bose CorporationService Manual Part Number 181812-S5 Bose Corporation The Mountain Framingham Massachusetts USA 01701 SPECIFICATIONS AND FEATURES SUBJECT TO CHANGE WITHOUT NOTICE P/N 181812-S5 REV. 00 11/97 FOR TECHNICAL ASSISTANCE OR PART ORDERS, CALL 1-800-367-4008