BKComponents-Reference7250-pwr-sm维修电路原理图.pdf

《BKComponents-Reference7250-pwr-sm维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《BKComponents-Reference7250-pwr-sm维修电路原理图.pdf（22页珍藏版）》请在收音机爱好者资料库上搜索。

1、5HIHUHQFH?5HIHUHQFH?SERVICE MANUALB&K COMPONENTS, LTD.2100 Old Union RoadBuffalo, New York 14227-2725U.S.A.RadioFans.CN 收音机爱 好者资料库3LFWXUHV3LFWXUHVB&K COMPONENTS, LTD.2100 Old Union RoadBuffalo, New York 14227-2725U.S.A.RadioFans.CN 收音机爱 好者资料库POWERON/OFFReference 7250 seriesIIB&K Components, Ltd.Refe

2、rence 7250 series II AmplifierMulti Channel AmplifierVOLTAGEFUSECAUTION: FOR CONTINUEDPROTECTION AGAINST RISKOF FIRE REPLACE ONLYWITH SAME TYPE 15A 250V.CTRLOUT12VDC125mACTRLINDEFEATCTRL INENABLEWHEN SWITCHIS SET TO ENABLE,THE AMPLIFIERWILL ONLYOPERATE WHILEA 5-24V SIGNALIS APPLIEDTO CTRL INCONTROL

3、I/O+-+PLUSMINUSOUTPUTCHANNEL 1FUSEPLUSMINUSOUTPUTCHANNEL 2FUSEPLUSMINUSOUTPUTCHANNEL 3FUSEPLUSMINUSOUTPUTCHANNEL 4FUSEPLUSMINUSOUTPUTCHANNEL 5FUSEPLUSMINUSOUTPUTCHANNEL 6FUSE+-+-+-+-SER. NO.SER. NO.B&K Components, Ltd.Made in the U.S.A.B&KW SSB.EIMPLYOUNDETTERCAUTIONCAUTIONRISK OF ELECTRIC SHOCKDO N

4、OT OPENRISK OF ELECTRIC SHOCKDO NOT OPENFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEFUSEINPUTS / LEVEL CONTROLSLEVEL 1LEVEL 2LEVEL 3LEVEL 4LEVEL 6LEVEL 5LOHILOHILOHILOHILOHILOHIINPUT 1INPUT 2INPUT 3INPUT

5、4INPUT 5INPUT 6A.C.LINEReference 7250 Amplifier6FKHPDWLFV6FKHPDWLFVB&K COMPONENTS, LTD.2100 Old Union RoadBuffalo, New York 14227-2725U.S.A.? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

6、? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?1500VA MULTI SEC/PRI TOROIDTHE SECONDARY VOLTAGES LISTED ARE FOR FULL LOADCONDITIONS MAX DIMENSIONS OF TOROIDAL TRANSFORMER:HEIGHT: 4.75DIAMETER: 6.75LEADS: 10 LENGTH 14 AWG TEW 105 DEG. C

7、- LEADS TOBE BROUGHT OUT SIDE OF CASE NEAR BOTTOM WITHPRIMARY/SECONDARY LEADS SPLIT 180 DEGREESTRANSFORMER TO BE SUPPLIED WITH CYLINDRICALDECORATIVE COVER - COLOR BLACK. TRANSFORMERPOTTING COMPOUND TO EXTEND TO LOWER LIP OFCOVER TO PROVIDE FLUSH MOUNTING SURFACEMOUNTING: SINGLE CENTER 3/8 - 16 THREA

8、DED INSERT(must be a 3/8 = 0.375 = 9.525mm mounting hole)EXTENDING A MINIMUM OF 2 FROMBOTTOMISOLATION PAD: 1/4 THICK NEOPRENE RUBBERB&K COMPONENTS LTD.SizeNumberRevA1500VA MULTI SEC/PRI SK-RWW-5/31/99-ADate10/22/99Drawn ByRWW/SBSD7/8/99Chg. Sec. Voltage from 48V to 52 VAdded Lead Routing SpecAdded M

9、ounting Insert SpecRev AP/N 12786Rev BAdded Potting SpecAdded Mounting Insert Length SpecAdded Lead Termination Specs8/30/99ALL LEADS EXCEPTTERMINATED WITH0.250 INSULATED FEMALE DISCONNECT(PANDUIT DNF14-250FIB OR APPD EQUIV.)TERMINATED WITH VINYL INSULATEDRING TERMINAL FOR #10 STUD (PANDUITPV12-10HD

10、R OR APPD EQUIV.)111152V52VRev CIncreased Max. Diameter to 6.75Isolation Pad Specifications:1/4 Thick Neoprene Rubber9/22/99Rev DIncreased length of all wires 1 inch - primariesand secondaries.10/22/993ULQWHG?&LUFXLW?%RDUGV3ULQWHG?&LUFXLW?%RDUGV3&%V3&%VB&K COMPONENTS, LTD.2100 Old Union RoadBuffalo,

11、 New York 14227-2725U.S.A.%LOO?RI?0DWHULDOV?%LOO?RI?0DWHULDOV?%20V%20VB&K COMPONENTS, LTD.2100 Old Union RoadBuffalo, New York 14227-2725U.S.A.Bill of Material for 10842b00.BomUsed Part Type Designator Footprint Description = = = = = 5 .12uF C8 C9 C10 RAD200 CAPACITOR C15 C16 10 .47 5W RP1 RP2 R5W.S

12、 RESISTOR RP3 RP4 RP5 RP6 RP7 RP8 RP9 RP10 1 1.5K R24 RES400 RESISTOR 10 1.5K R1 R16 R17 RES500 RESISTOR R22 R23 R27 R28 R29 R30 R35 1 1K R43 RES500 RESISTOR 1 1M R18 RES400 RESISTOR 1 1N965B D2 DIODE.4 ZENER DIODE 1 1N4148 D4 DIODE.4 DIODE 1 1N4751 D3 DIODE.4 ZENER DIODE 1 1N4751 D1 DIODE.5 ZENER D

13、IODE 3 2.26K R5 R11 R39 RES500 RESISTOR 1 2N3440 Q12 TO5 NPN TRANSISTOR 2 2N5087 M Q7 Q8 TO92 PNP TRANSISTOR 6 2N5210 Q3 Q4 Q5 TO92 NPN TRANSISTOR Q6 Q10 Q11 2 2N5210 M Q1 Q2 TO92 NPN TRANSISTOR 1 2N5401 Q13 TO92 PNP TRANSISTOR 1 2N5416 Q9 TO5 PNP TRANSISTOR 5 2SJ162 QP1 QP2 LATERAL3P HITACHI P CH L

14、ATERAL MOSFET QP3 QP4 QP5 5 2SK1058 QN1 QN2 LATERAL3P HITACHI N CH LATERAL MOSFET QN3 QN4 QN5 2 6A SLOW F1 F2 FUSE.3AG FUSE 2 10K R19 R36 RES500 RESISTOR 1 10uF 25V C14 CAP200RP POLAR CAPACITOR 1 10uF/25V C1 CAP200RP POLAR CAPACITOR 1 33.2K R20 RES400 RESISTOR 4 33.2K R2 R9 R13 RES500 RESISTOR R44 2

15、 47.5 R15 R26 RES500 RESISTOR 1 47.5K R31 RES400 RESISTOR 1 47.5K R42 RES500 RESISTOR 1 100uF 25V C4 CAP200RP POLAR CAPACITOR 2 100 uF 100V C7 C13 CAP200RP POLAR CAPACITOR 2 100uF 100V C6 C12 CAP200RP POLAR CAPACITOR 1 100uF/25V C2 CAP200RP POLAR CAPACITOR 1 120pF C3 RAD200 CAPACITOR 1 133 R6 RES500

16、 RESISTOR 5 221 R3 R4 R7 RES500 RESISTOR R8 R12 1 221K R40 RES500 RESISTOR 1 475 R25 RES500 RESISTOR 2 500 P1 P2 TRIMPOT SINGLE POT 1 GND1 W13 PC_PAD MOLEX 102 PC MOUNT CRIMP CONNECTOR 1 GND2 W14 PC_PAD MOLEX 102 PC MOUNT CRIMP CONNECTOR 1 JN W6 PC_PAD MOLEX 102 PC MOUNT CRIMP CONNECTOR 1 JP W10 PC_

17、PAD MOLEX 102 PC MOUNT CRIMP CONNECTOR 3 JUMPER R14 R37 RES400 RESISTOR R38 1 JUMPER R10 RES500 RESISTOR 1 MUTE W5 PC_PAD MOLEX 102 PC MOUNT CRIMP CONNECTOR 1 OPEN C11 RAD200 CAPACITOR 1 OPEN R21 RES400 RESISTOR 1 OUT1 W3 PC_PAD MOLEX 102 PC MOUNT CRIMP CONNECTOR 1 OUT2 W11 PC_PAD MOLEX 102 PC MOUNT

18、 CRIMP CONNECTOR 1 OUT3 W12 PC_PAD MOLEX 102 PC MOUNT CRIMP CONNECTOR 1 V+a W4 PC_PAD MOLEX 102 PC MOUNT CRIMP CONNECTOR 1 V+b W2 PC_PAD MOLEX 102 PC MOUNT CRIMP CONNECTOR 1 V-a W9 PC_PAD MOLEX 102 PC MOUNT CRIMP CONNECTOR 1 V-b W8 PC_PAD MOLEX 102 PC MOUNT CRIMP CONNECTOR 1 VN W1 PC_PAD MOLEX 102 P

19、C MOUNT CRIMP CONNECTOR 1 VP W7 PC_PAD MOLEX 102 PC MOUNT CRIMP CONNECTOR 1 WIRE J1 JUMP.5 JUMPER (NORM OPEN)Bill of Material for 12820a00.BomUsed Part Type Designator Footprint Description = = = = = 1 PC_PAD SW1 2PDT.24 SWITCH DPDT 1 PC_PAD CON3 7275-8NB DUAL 3.5mm DUAL STEREO JACK similar to 35RAP

20、C7J 1 PC_PAD CON1 RCA.X1 R/W AUD CONN COMMON SHELL X 1 1 PC_PAD CON2 SIP5 Bill of Material for 12816a00.BomUsed Part Type Designator Footprint Description = = = = = 1 .5A F3 FUSE.3AG FUSE 6 .1 5W R8 R9 R10 RES5WAXIAL RESISTOR R11 R12 R13 1 .033uF C7 RAD200 CAPACITOR 1 1K R14 RES500 RESISTOR 2 1N965B

21、 D7 ZD1 DIODE.4 ZENER DIODE 6 1N4002 D8 D9 D10 DIODE.5 DIODE D11 D12 D13 6 1N4148 D1 D2 D3 DIODE.4 DIODE D4 D5 D6 1 2.2K 5W R7 RES5WAXIAL RESISTOR 2 2 AMP SLO-BLO F1 F2 FUSE.3AG FUSE 2 2N5551 Q1 Q2 TO92 NPN TRANSISTOR 1 2 Ohm 10 W R19 RES10WAXIAL RESISTOR 1 2 Ohm 10W R16 RES10WAXIAL RESISTOR 1 5.62

22、R6 RES500 RESISTOR 3 10K R3 R4 R5 RES500 RESISTOR 1 16V 1000uF C8 CAP200RP POLAR CAPACITOR 6 27KuF 80V C1 C2 C3 PCAP_2.BIG POLAR CAPACITOR C4 C5 C6 1 33.2K R2 RES500 RESISTOR 1 133 R1 RES500 RESISTOR 2 100 2W RES JO1 JO2 JUMP.7 JUMPER (NORM OPEN) 1 270 5W R20 RES5WAXIAL RESISTOR 1 910 3W R15 RES500

23、RESISTOR 2 AC_IN CON1 CON2 FASTON.25 PC MOUNT FASTON CONNECTOR 6 AON W19 W20 PC_PAD MOLEX 102 PC MOUNT CRIMP CONNECTOR W21 W22 W23 W24 3 BRIDGE_RECT BR1 BR2 BRIDGE.HP BRIDGE RECTIFIER BR3 1 CON5 CON3 MOLEX5 1 DPDT_RELAY_1 RL3 DPDT_RLY1 DPDT RELAY 2 GND+ W4 W5 PC_PAD MOLEX 102 PC MOUNT CRIMP CONNECTO

24、R 2 GND- W1 W2 PC_PAD MOLEX 102 PC MOUNT CRIMP CONNECTOR 2 GND W25 W27 PC_PAD MOLEX 102 PC MOUNT CRIMP CONNECTOR 2 JUMPER R17 R18 RES500 RESISTOR 1 LED+ W26 PC_PAD MOLEX 102 PC MOUNT CRIMP CONNECTOR 2 T9ASRELAY 24V RL1 RL2 T9ASRELAY SPST RELAY 30AMP 1 TIP31C Q4 TO220 NPN POWER TRANSISTOR 1 TIP32C Q3

25、 TO220 PNP POWER TRANSISTOR 6 V+ W7 W8 W9 PC_PAD MOLEX 102 PC MOUNT CRIMP CONNECTOR W10 W11 W12 6 V- W13 W14 PC_PAD MOLEX 102 PC MOUNT CRIMP CONNECTOR W15 W16 W17 W18Bill of Material for 12943-00.BomUsed Part Type Designator Footprint Description = = = = = 2 CON8 CON1 CON2 MOLEX8 8 PIN MOLEX CONNECT

26、OR 1 GND W1 PC_PAD MOLEX 102 PC MOUNT CRIMP CONNECTOR 1 HEADER_2X20 JP1 40PINHEAD HEADER 20X2 8 RCA RCA1 RCA2 PCB_RCA RCA CONNECTOR RCA3 RCA4 RCA5 RCA6 RCA7 RCA8 Bill of Material for 12944-00.BomUsed Part Type Designator Footprint Description = = = = = 2 CON8 CON1 CON2 MOLEX8 8 PIN MOLEX CONNECTOR 1 GND W1 PC_PAD MOLEX 102 PC MOUNT CRIMP CONNECTOR 1 HEADER_2X20 JP1 40PINHEAD HEADER 20X2 8 TRIM_POT VR1 VR2 SINGLPOT Trim Pot VR3 VR4 VR5 VR6 VR7 VR8