BKComponents-AV1230-pwr-sch维修电路原理图.pdf

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1、B&K COMPONENTS LTD. AV1230 SERVICE MANUAL SBS - 080307 RadioFans.CN 收音机爱 好者资料库 1234 A B C D 4321 D C B A Title NumberRevisionSize A Date:1-Aug-2007 Sheet of File:C:BK_DataB&K_AV1230B&K_AV1230_Input_Board14110a00.ddbDrawn By: 3 2 1 84 U100A 353 5 6 7 U100B 353 R106 221 R103 100K R102 100K R107 221 -5

2、 +5 C100 .033uF C101 .033uF L BUS OUT 3 2 1 84 U101A 353 5 6 7 U101B 353 R108 221 R105 100K R104 100K R109 221 -5 +5 C102 .033uF C103 .033uF R BUS OUT BUS L OUT BUS L IN BUS R OUT BUS R IN LEFT AND RIGHT BUS BUS IN LEFT BUS IN RIGHT AV1230 Audio Input Bus 14110a00Rev A 2 of 8 SBSESM R100 1K R101 1K

3、1 2 3 4 5 CON101-5+5 25 W R CON100 RCA_RW_X2 +C105 100uF 25V + C104 100uF 25V R111 Jumper R110 Jumper R112 Jumper R113 Jumper R114 Jumper W3 GND +5 R1 221 R2 221 +2.5 Reference Voltage For Amp Control On/Off W1 GND W2 +5 RadioFans.CN 收音机爱 好者资料库 1234 A B C D 4321 D C B A Title NumberRevisionSize A Da

4、te:1-Aug-2007 Sheet of File:C:BK_DataB&K_AV1230B&K_AV1230_Input_Board14110a00.ddbDrawn By: R1A 1K R2A 1K CH 2 IN CH 1 OUT CH 2 OUT 1I/O_0 12 1I/O_1 13 2I/O_0 2 2I/O_1 1 3I/O_0 5 3I/O_1 3 1S 11 2S 10 3S 9 EN 6 1O/I14 2O/I15 3O/I4 VCC16 GND8 VEE7 U1A 74HC4053 +5 C1A .033uF 3 2 1 84 U2AA 353 5 6 7 U2AB

5、 353 R10A 221 R9A 100K R8A 100K R11A 221 -5 +5 C3A .033uF C4A .033uF CH 1 IN CHANNELS 1-2 BUS IN LEFT BUS IN RIGHT BUS IN RIGHT BUS IN LEFT AV1230 Channels 1-2 Audio Input 14110a00Rev A 3 of 8 CH 1-2 INPUTS 1S/2S HIGH=CHANNEL 1S/2S LOW=BUS 3S HIGH=CONTROL 3S LOW=SENSE 74HC4053 KEY LEFT/RIGHT OUT BUF

6、FERS C2A .033uF -5 1-2 SENSE 1-2 CTRL 1-2 BUS/CH 1-2 SENSE ON/OFF 1-2 RIGHT OUT 1-2 LEFT OUT SBSESM R6A 100K R7A 100K R3A 1K R4A 1K R5A 1K 12 34 56 78 910 JP2A HEADER_2X5 12 34 56 78 910 JP1A HEADER_2X5 CH_2_Out CH_1_Out PR1A DUALPOT 1-2_Amp_En 1-2_Right_Mono 1-2_Left_Mono 25 W R CON1A RCA_RW_X2 Q1A

7、 2N5087 Q2A 2N5087 R13A 10K R12A 10K R14A 3.01K +2.5 -5 R15A Open 1234 A B C D 4321 D C B A Title NumberRevisionSize A Date:1-Aug-2007 Sheet of File:C:BK_DataB&K_AV1230B&K_AV1230_Input_Board14110a00.ddbDrawn By: R1B 1K R2B 1K CH 4 IN CH 3 OUT CH 4 OUT 1I/O_0 12 1I/O_1 13 2I/O_0 2 2I/O_1 1 3I/O_0 5 3

8、I/O_1 3 1S 11 2S 10 3S 9 EN 6 1O/I14 2O/I15 3O/I4 VCC16 GND8 VEE7 U1B 74HC4053 +5 C1B .033uF 3 2 1 84 U2BA 353 5 6 7 U2BB 353 R10B 221 R9B 100K R8B 100K R11B 221 -5 +5 C3B .033uF C4B .033uF CH 3 IN CHANNELS 3-4 BUS IN LEFT BUS IN RIGHT BUS IN RIGHT BUS IN LEFT AV1230 Channels 3-4 Audio Input 14110a0

9、0Rev A 4 of 8 CH 3-4 INPUTS 1S/2S HIGH=CHANNEL 1S/2S LOW=BUS 3S HIGH=CONTROL 3S LOW=SENSE 74HC4053 KEY LEFT/RIGHT OUT BUFFERS C2B .033uF -5 3-4 SENSE 3-4 CTRL 3-4 BUS/CH 3-4 SENSE ON/OFF 3-4 RIGHT OUT 3-4 LEFT OUT SBSESM R6B 100K R7B 100K R3B 1K R4B 1K R5B 1K 12 34 56 78 910 JP2B HEADER_2X5 12 34 56

10、 78 910 JP1B HEADER_2X5 CH_4_Out CH_3_Out PR1B DUALPOT 3-4_Amp_En 3-4_Right_Mono 3-4_Left_Mono 25 W R CON1B RCA_RW_X2 Q1B 2N5087 Q2B 2N5087 R13B 10K R12B 10K R14B 3.01K +2.5 -5 R15B Open 1234 A B C D 4321 D C B A Title NumberRevisionSize A Date:1-Aug-2007 Sheet of File:C:BK_DataB&K_AV1230B&K_AV1230_

11、Input_Board14110a00.ddbDrawn By: R1C 1K R2C 1K CH 6 IN CH 5 OUT CH 6 OUT 1I/O_0 12 1I/O_1 13 2I/O_0 2 2I/O_1 1 3I/O_0 5 3I/O_1 3 1S 11 2S 10 3S 9 EN 6 1O/I14 2O/I15 3O/I4 VCC16 GND8 VEE7 U1C 74HC4053 +5 C1C .033uF 3 2 1 84 U2CA 353 5 6 7 U2CB 353 R10C 221 R9C 100K R8C 100K R11C 221 -5 +5 C3C .033uF

12、C4C .033uF CH 5 IN CHANNELS 5-6 BUS IN LEFT BUS IN RIGHT BUS IN RIGHT BUS IN LEFT AV1230 Channels 5-6 Audio Input 14110a00Rev A 5 of 8 CH 5-6 INPUTS 1S/2S HIGH=CHANNEL 1S/2S LOW=BUS 3S HIGH=CONTROL 3S LOW=SENSE 74HC4053 KEY LEFT/RIGHT OUT BUFFERS C2C .033uF -5 5-6 SENSE 5-6 CTRL 5-6 BUS/CH 5-6 SENSE

13、 ON/OFF 5-6 RIGHT OUT 5-6 LEFT OUT SBSESM R6C 100K R7C 100K R3C 1K R4C 1K R5C 1K 12 34 56 78 910 JP2C HEADER_2X5 12 34 56 78 910 JP1C HEADER_2X5 CH_6_Out CH_5_Out PR1C DUALPOT 5-6_Amp_En 5-6_Right_Mono 5-6_Left_Mono 25 W R CON1C RCA_RW_X2 Q1C 2N5087 Q2C 2N5087 R13C 10K R12C 10K R14C 3.01K +2.5 -5 R1

14、5C Open 1234 A B C D 4321 D C B A Title NumberRevisionSize A Date:1-Aug-2007 Sheet of File:C:BK_DataB&K_AV1230B&K_AV1230_Input_Board14110a00.ddbDrawn By: R1D 1K R2D 1K CH 8 IN CH 7 OUT CH 8 OUT 1I/O_0 12 1I/O_1 13 2I/O_0 2 2I/O_1 1 3I/O_0 5 3I/O_1 3 1S 11 2S 10 3S 9 EN 6 1O/I14 2O/I15 3O/I4 VCC16 GN

15、D8 VEE7 U1D 74HC4053 +5 C1D .033uF 3 2 1 84 U2DA 353 5 6 7 U2DB 353 R10D 221 R9D 100K R8D 100K R11D 221 -5 +5 C3D .033uF C4D .033uF CH 7 IN CHANNELS 7-8 BUS IN LEFT BUS IN RIGHT BUS IN RIGHT BUS IN LEFT AV1230 Channels 7-8 Audio Input 14110a00Rev A 6 of 8 CH 7-8 INPUTS 1S/2S HIGH=CHANNEL 1S/2S LOW=B

16、US 3S HIGH=CONTROL 3S LOW=SENSE 74HC4053 KEY LEFT/RIGHT OUT BUFFERS C2D .033uF -5 7-8 SENSE 7-8 CTRL 7-8 BUS/CH 7-8 SENSE ON/OFF 7-8 RIGHT OUT 7-8 LEFT OUT SBSESM R6D 100K R7D 100K R3D 1K R4D 1K R5D 1K 12 34 56 78 910 JP2D HEADER_2X5 12 34 56 78 910 JP1D HEADER_2X5 CH_8_Out CH_7_Out PR1D DUALPOT 7-8

17、_Amp_En 7-8_Right_Mono 7-8_Left_Mono 25 W R CON1D RCA_RW_X2 Q1D 2N5087 Q2D 2N5087 R13D 10K R12D 10K R14D 3.01K +2.5 -5 R15D Open 1234 A B C D 4321 D C B A Title NumberRevisionSize A Date:1-Aug-2007 Sheet of File:C:BK_DataB&K_AV1230B&K_AV1230_Input_Board14110a00.ddbDrawn By: R1E 1K R2E 1K CH 10 IN CH

18、 9 OUT CH 10 OUT 1I/O_0 12 1I/O_1 13 2I/O_0 2 2I/O_1 1 3I/O_0 5 3I/O_1 3 1S 11 2S 10 3S 9 EN 6 1O/I14 2O/I15 3O/I4 VCC16 GND8 VEE7 U1E 74HC4053 +5 C1E .033uF 3 2 1 84 U2EA 353 5 6 7 U2EB 353 R10E 221 R9E 100K R8E 100K R11E 221 -5 +5 C3E .033uF C4E .033uF CH 9 IN CHANNELS 9-10 BUS IN LEFT BUS IN RIGH

19、T BUS IN RIGHT BUS IN LEFT AV1230 Channels 9-10 Audio Input 14110a00Rev A 7 of 8 CH 9-10 INPUTS 1S/2S HIGH=CHANNEL 1S/2S LOW=BUS 3S HIGH=CONTROL 3S LOW=SENSE 74HC4053 KEY LEFT/RIGHT OUT BUFFERS C2E .033uF -5 9-10 SENSE 9-10 CTRL 9-10 BUS/CH 9-10 SENSE ON/OFF 9-10 RIGHT OUT 9-10 LEFT OUT SBSESM R6E 1

20、00K R7E 100K R3E 1K R4E 1K R5E 1K 12 34 56 78 910 JP2E HEADER_2X5 12 34 56 78 910 JP1E HEADER_2X5 CH_10_Out CH_9_Out PR1E DUALPOT 9-10_Amp_En 9-10_Right_Mono 9-10_Left_Mono 25 W R CON1E RCA_RW_X2 Q1E 2N5087 Q2E 2N5087 R13E 10K R12E 10K R14E 3.01K +2.5 -5 R15E Open 1234 A B C D 4321 D C B A Title Num

21、berRevisionSize A Date:1-Aug-2007 Sheet of File:C:BK_DataB&K_AV1230B&K_AV1230_Input_Board14110a00.ddbDrawn By: R1F 1K R2F 1K CH 12 IN CH 11 OUT CH 12 OUT 1I/O_0 12 1I/O_1 13 2I/O_0 2 2I/O_1 1 3I/O_0 5 3I/O_1 3 1S 11 2S 10 3S 9 EN 6 1O/I14 2O/I15 3O/I4 VCC16 GND8 VEE7 U1F 74HC4053 +5 C1F .033uF 3 2 1

22、 84 U2FA 353 5 6 7 U2FB 353 R10F 221 R9F 100K R8F 100K R11F 221 -5 +5 C3F .033uF C4F .033uF CH 11 IN CHANNELS 11-12 BUS IN LEFT BUS IN RIGHT BUS IN RIGHT BUS IN LEFT AV1230 Channels 11-12 Audio Input 14110a00Rev A 8 of 8 CH 11-12 INPUTS 1S/2S HIGH=CHANNEL 1S/2S LOW=BUS 3S HIGH=CONTROL 3S LOW=SENSE 7

23、4HC4053 KEY LEFT/RIGHT OUT BUFFERS C2F .033uF -5 11-12 SENSE 11-12 CTRL 11-12 BUS/CH 11-12 SENSE ON/OFF 11-12 RIGHT OUT 11-12 LEFT OUT SBSESM R6F 100K R7F 100K R3F 1K R4F 1K R5F 1K 12 34 56 78 910 JP2F HEADER_2X5 12 34 56 78 910 JP1F HEADER_2X5 CH_12_Out CH_11_Out PR1F DUALPOT 11-12_Amp_En 11-12_Rig

24、ht_Mono 11-12_Left_Mono 25 W R CON1F RCA_RW_X2 Q1F 2N5087 Q2F 2N5087 R13F 10K R12F 10K R14F 3.01K +2.5 -5 R15F Open 1234 A B C D 4321 D C B A Title NumberRevisionSize A Date:1-Aug-2007 Sheet of File:C:BK_DataB&K_AV1230B&K_AV1230_Control_Board14119-00.ddbDrawn By: 3 2 1 84 U1AA 353 R23A 5.62 R12A 1M

25、-5 +5 C3A .033uF C4A .033uF R11A 1M R13A 1K D2A 1N4148 + C5A 100uF 25V R14A 1K R10A 1M R1A 1M R2A 1M AV1230 Sense/Control I/O Ch1-2 14119-00Rev - 2 of 7 D3A 1N4148 R17A 1K CH 1-2 CONTROL ZD2A 1N748 ZD1A 1N748 CH 1-2 CTRL IN/OUT SENSE CIRCUIT KEY - DIP SWITCH SETTINGS BUS - CHANNEL MONO - STEREO SENS

26、E - CONTROL CH ON - CONTROL 5 6 7 U1AB 353 D1A 1N4148 R18A 100 R8A 10K +C8A 1uF 25V R3A 100K R24A 47.5K D4A 1N4148 ON OFF - SBS R15A 1K C1A .12uF C2A .12uF R5A 10K 12 34 56 78 910 JP1A HEADER_2X5 18 27 36 45 SW1A SW-DIP-4 R4A 10K +5 R7A 10K ON R6A 10K OFF SENSE CTRL BUS/CH SENSE ON/OFF R20A 100 R19A

27、 100 R22A 100 +5 D6A 1N4148 R16A 1K MASTER R9A 10K +C9A 1uF 25V D5A 1N4148 R21A 100 MASTER ctrl MASTER CONTROL I/O CON4A 3061-31 CON3A 3061-31 CON2A 3061-31 CON1A 3061-31 -5+5 +C7A 100uF 25V + C6A 100uF 25V W1 GND 1 2 3 4 5 CON5A 1234 A B C D 4321 D C B A Title NumberRevisionSize A Date:1-Aug-2007 S

28、heet of File:C:BK_DataB&K_AV1230B&K_AV1230_Control_Board14119-00.ddbDrawn By: 3 2 1 84 U1BA 353 R23B 5.62 R12B 1M -5 +5 C3B .033uF C4B .033uF R11B 1M R13B 1K D2B 1N4148 + C5B 100uF 25V R14B 1K R10B 1M R1B 1M R2B 1M AV1230 Sense/Control I/O Ch_3-4 14119-00Rev - 3 of 7 D3B 1N4148 R17B 1K CH_3-4 CONTRO

29、L ZD2B 1N748 ZD1B 1N748 CH_3-4 CTRL IN/OUT SENSE CIRCUIT KEY - DIP SWITCH SETTINGS BUS - CHANNEL MONO - STEREO SENSE - CONTROL CH ON - CONTROL 5 6 7 U1BB 353 D1B 1N4148 R18B 100 R8B 10K +C8B 1uF 25V MASTER ctrl R3B 100K R24B 47.5K D4B 1N4148 ON OFF - SBS R15B 1K C1B .12uF C2B .12uF R5B 10K 12 34 56

30、78 910 JP1B HEADER_2X5 18 27 36 45 SW1B SW-DIP-4 R4B 10K +5 R7B 10K ON R6B 10K OFF SENSE_3-4 CTRL_3-4 BUS/CH_3-4 SENSE ON/OFF_3-4 R20B 100 R19B 100 CON2B 3061-31 CON1B 3061-31 1234 A B C D 4321 D C B A Title NumberRevisionSize A Date:1-Aug-2007 Sheet of File:C:BK_DataB&K_AV1230B&K_AV1230_Control_Boa

31、rd14119-00.ddbDrawn By: 3 2 1 84 U1CA 353 R23C 5.62 R12C 1M -5 +5 C3C .033uF C4C .033uF R11C 1M R13C 1K D2C 1N4148 + C5C 100uF 25V R14C 1K R10C 1M R1C 1M R2C 1M AV1230 Sense/Control I/O Ch_5-6 14119-00Rev - 4 of 7 D3C 1N4148 R17C 1K CH_5-6 CONTROL ZD2C 1N748 ZD1C 1N748 CH_5-6 CTRL IN/OUT SENSE CIRCU

32、IT KEY - DIP SWITCH SETTINGS BUS - CHANNEL MONO - STEREO SENSE - CONTROL CH ON - CONTROL 5 6 7 U1CB 353 D1C 1N4148 R18C 100 R8C 10K +C8C 1uF 25V MASTER ctrl R3C 100K R24C 47.5K D4C 1N4148 ON OFF - SBS R15C 1K C1C .12uF C2C .12uF R5C 10K 12 34 56 78 910 JP1C HEADER_2X5 18 27 36 45 SW1C SW-DIP-4 R4C 1

33、0K +5 R7C 10K ON R6C 10K OFF SENSE_5-6 CTRL_5-6 BUS/CH_5-6 SENSE ON/OFF_5-6 R20C 100 R19C 100 CON2C 3061-31 CON1C 3061-31 1234 A B C D 4321 D C B A Title NumberRevisionSize A Date:1-Aug-2007 Sheet of File:C:BK_DataB&K_AV1230B&K_AV1230_Control_Board14119-00.ddbDrawn By: 3 2 1 84 U1DA 353 R23D 5.62 R1

34、2D 1M -5 +5 C3D .033uF C4D .033uF R11D 1M R13D 1K D2D 1N4148 + C5D 100uF 25V R14D 1K R10D 1M R1D 1M R2D 1M AV1230 Sense/Control I/O Ch_7-8 14119-00Rev - 5 of 7 D3D 1N4148 R17D 1K CH_7-8 CONTROL ZD2D 1N748 ZD1D 1N748 CH_7-8 CTRL IN/OUT SENSE CIRCUIT KEY - DIP SWITCH SETTINGS BUS - CHANNEL MONO - STER

35、EO SENSE - CONTROL CH ON - CONTROL 5 6 7 U1DB 353 D1D 1N4148 R18D 100 R8D 10K +C8D 1uF 25V MASTER ctrl R3D 100K R24D 47.5K D4D 1N4148 ON OFF - SBS R15D 1K C1D .12uF C2D .12uF R5D 10K 12 34 56 78 910 JP1D HEADER_2X5 18 27 36 45 SW1D SW-DIP-4 R4D 10K +5 R7D 10K ON R6D 10K OFF SENSE_7-8 CTRL_7-8 BUS/CH

36、_7-8 SENSE ON/OFF_7-8 R20D 100 R19D 100 CON2D 3061-31 CON1D 3061-31 1234 A B C D 4321 D C B A Title NumberRevisionSize A Date:1-Aug-2007 Sheet of File:C:BK_DataB&K_AV1230B&K_AV1230_Control_Board14119-00.ddbDrawn By: 3 2 1 84 U1EA 353 R23E 5.62 R12E 1M -5 +5 C3E .033uF C4E .033uF R11E 1M R13E 1K D2E

37、1N4148 + C5E 100uF 25V R14E 1K R10E 1M R1E 1M R2E 1M AV1230 Sense/Control I/O Ch_9-10 14119-00Rev - 6 of 7 D3E 1N4148 R17E 1K CH_9-10 CONTROL ZD2E 1N748 ZD1E 1N748 CH_9-10 CTRL IN/OUT SENSE CIRCUIT KEY - DIP SWITCH SETTINGS BUS - CHANNEL MONO - STEREO SENSE - CONTROL CH ON - CONTROL 5 6 7 U1EB 353 D

38、1E 1N4148 R18E 100 R8E 10K +C8E 1uF 25V MASTER ctrl R3E 100K R24E 47.5K D4E 1N4148 ON OFF - SBS R15E 1K C1E .12uF C2E .12uF R5E 10K 12 34 56 78 910 JP1E HEADER_2X5 18 27 36 45 SW1E SW-DIP-4 R4E 10K +5 R7E 10K ON R6E 10K OFF SENSE_9-10 CTRL_9-10 BUS/CH_9-10 SENSE ON/OFF_9-10 R20E 100 R19E 100 CON2E 3

39、061-31 CON1E 3061-31 1234 A B C D 4321 D C B A Title NumberRevisionSize A Date:1-Aug-2007 Sheet of File:C:BK_DataB&K_AV1230B&K_AV1230_Control_Board14119-00.ddbDrawn By: 3 2 1 84 U1FA 353 R23F 5.62 R12F 1M -5 +5 C3F .033uF C4F .033uF R11F 1M R13F 1K D2F 1N4148 + C5F 100uF 25V R14F 1K R10F 1M R1F 1M R

40、2F 1M AV1230 Sense/Control I/O Ch_11-12 14119-00Rev - 7 of 7 D3F 1N4148 R17F 1K CH_11-12 CONTROL ZD2F 1N748 ZD1F 1N748 CH_11-12 CTRL IN/OUT SENSE CIRCUIT KEY - DIP SWITCH SETTINGS BUS - CHANNEL MONO - STEREO SENSE - CONTROL CH ON - CONTROL 5 6 7 U1FB 353 D1F 1N4148 R18F 100 R8F 10K +C8F 1uF 25V MAST

41、ER ctrl R3F 100K R24F 47.5K D4F 1N4148 ON OFF - SBS R15F 1K C1F .12uF C2F .12uF R5F 10K 12 34 56 78 910 JP1F HEADER_2X5 18 27 36 45 SW1F SW-DIP-4 R4F 10K +5 R7F 10K ON R6F 10K OFF SENSE11-12 CTRL11-12 BUS/CH_11-12 SENSE ON/OFF_11-12 R20F 100 R19F 100 CON2F 3061-31 CON1F 3061-31 123456 A B C D 654321

42、 D C B A Title NumberRevisionSize B Date:1-Aug-2007 Sheet of File:C:BK_DataB&K_AV1230B&K_AV1230_Output_Board14111-00.ddbDrawn By: OUT 2 V- V+ R1A 475 R12A 1K R7A 26.7K R14A 26.7K +C7A 100uF 100V +C8A 100uF 100V + C11A 100uF 25V + C1A 10uF 25V C3A .12uF C4A .12uF VIN+ 10 VIN- 9 OUT3 V+1 V+5 NC2 NC6 G

43、ND 7 V- 4 NC 11 MUTE 8 U1A LM3886 OUT 1 V- V+ R2A 475 R13A 1K R8A 26.7K R15A 26.7K +C9A 100uF 100V +C10A 100uF 100V + C12A 100uF 25V + C2A 10uF 25V C5A .12uF C6A .12uF VIN+ 10 VIN- 9 OUT3 V+1 V+5 NC2 NC6 GND 7 V- 4 NC 11 MUTE 8 U2A LM3886 12 34 56 78 910 JP1A AV1230 Output 14111Rev - 2 of 7 W2A V+ W

44、3A V- V+V- W1A GND SBSESM D1A 11DQ09 D2A 11DQ09 R6A 1K R9A 1K Channels 1-2 1 2 3 4 CON1A 4_PIN_SPEAKER R5A OPEN R4A .1 R3A .1 MT1A PC_MOUNT_BRACKET R16A 2.7 123456 A B C D 654321 D C B A Title NumberRevisionSize B Date:1-Aug-2007 Sheet of File:C:BK_DataB&K_AV1230B&K_AV1230_Output_Board14111-00.ddbDr

45、awn By: AV1230 Output 14111Rev - 4 of 7 SBSESM Channels 3-4 OUT 2 V- V+ R1B 475 R12B 1K R7B 26.7K R14B 26.7K +C7B 100uF 100V +C8B 100uF 100V + C11B 100uF 25V + C1B 10uF 25V C3B .12uF C4B .12uF VIN+ 10 VIN- 9 OUT3 V+1 V+5 NC2 NC6 GND 7 V- 4 NC 11 MUTE 8 U1B LM3886 OUT 1 V- V+ R2B 475 R13B 1K R8B 26.7

46、K R15B 26.7K +C9B 100uF 100V +C10B 100uF 100V + C12B 100uF 25V + C2B 10uF 25V C5B .12uF C6B .12uF VIN+ 10 VIN- 9 OUT3 V+1 V+5 NC2 NC6 GND 7 V- 4 NC 11 MUTE 8 U2B LM3886 12 34 56 78 910 JP1B D1B 11DQ09 D2B 11DQ09 1 2 3 4 CON1B 4_PIN_SPEAKER R4B .1 R3B .1 MT1B PC_MOUNT_BRACKET R16B 2.7 R6B 1K R9B 1K R

47、5B OPEN 123456 A B C D 654321 D C B A Title NumberRevisionSize B Date:1-Aug-2007 Sheet of File:C:BK_DataB&K_AV1230B&K_AV1230_Output_Board14111-00.ddbDrawn By: OUT 2 V- V+ R1C 475 R12C 1K R7C 26.7K R14C 26.7K +C7C 100uF 100V +C8C 100uF 100V + C11C 100uF 25V + C1C 10uF 25V C3C .12uF C4C .12uF VIN+ 10

48、VIN- 9 OUT3 V+1 V+5 NC2 NC6 GND 7 V- 4 NC 11 MUTE 8 U1C LM3886 OUT 1 V- V+ R2C 475 R13C 1K R8C 26.7K R15C 26.7K +C9C 100uF 100V +C10C 100uF 100V + C12C 100uF 25V + C2C 10uF 25V C5C .12uF C6C .12uF VIN+ 10 VIN- 9 OUT3 V+1 V+5 NC2 NC6 GND 7 V- 4 NC 11 MUTE 8 U2C LM3886 12 34 56 78 910 JP1C AV1230 Outp

49、ut 14111Rev - 4 of 7 SBSESM D1C 11DQ09 D2C 11DQ09 Channels 4-5 1 2 3 4 CON1C 4_PIN_SPEAKER R4C .1 R3C .1 R16C 2.7 R6C 1K R9C 1K R5C OPEN 123456 A B C D 654321 D C B A Title NumberRevisionSize B Date:1-Aug-2007 Sheet of File:C:BK_DataB&K_AV1230B&K_AV1230_Output_Board14111-00.ddbDrawn By: OUT 2 V- V+ R1