B&K-Reference7250-pwr-sm维修电路原理图.pdf

5HIHUHQFH?5HIHUHQFH? SERVICE MANUAL B&K COMPONENTS, LTD. 2100 Old Union Road Buffalo, New York 14227-2725 U.S.A. RadioFans.CN 收音机爱 好者资料库 3LFWXUHV3LFWXUHV B&K COMPONENTS, LTD. 2100 Old Union Road Buffalo, New York 14227-2725 U.S.A. RadioFans.CN 收音机爱 好者资料库 POWER ON/OFF Reference 7250 seriesIIB&K Components, Ltd. Reference 7250 series II Amplifier Multi Channel Amplifier VOLTAGE FUSE CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE ONLY WITH SAME TYPE 15A 250V. CTRL OUT 12VDC 125mA CTRL IN DEFEAT CTRL IN ENABLE WHEN SWITCH IS SET TO ENABLE, THE AMPLIFIER WILL ONLY OPERATE WHILE A 5-24V SIGNAL IS APPLIED TO CTRL IN CONTROL I/O + - + PLUSMINUS OUTPUT CHANNEL 1 FUSE PLUSMINUS OUTPUT CHANNEL 2 FUSE PLUSMINUS OUTPUT CHANNEL 3 FUSE PLUSMINUS OUTPUT CHANNEL 4 FUSE PLUSMINUS OUTPUT CHANNEL 5 FUSE PLUSMINUS OUTPUT CHANNEL 6 FUSE + - + - + - + - SER. NO.SER. NO. B&K Components, Ltd. Made in the U.S.A. B&K W SSB.EIMPLYOUNDETTER CAUTIONCAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN RISK OF ELECTRIC SHOCK DO NOT OPEN F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E INPUTS / LEVEL CONTROLS LEVEL 1LEVEL 2LEVEL 3LEVEL 4LEVEL 6LEVEL 5 LOHILOHILOHILOHILOHILOHI INPUT 1INPUT 2INPUT 3INPUT 4INPUT 5INPUT 6 A.C.LINE Reference 7250 Amplifier 6FKHPDWLFV6FKHPDWLFV B&K COMPONENTS, LTD. 2100 Old Union Road Buffalo, New York 14227-2725 U.S.A. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1500VA MULTI SEC/PRI TOROID THE SECONDARY VOLTAGES LISTED ARE FOR FULL LOAD CONDITIONS MAX DIMENSIONS OF TOROIDAL TRANSFORMER: HEIGHT: 4.75 DIAMETER: 6.75 LEADS: 10 LENGTH 14 AWG TEW 105 DEG. C - LEADS TO BE BROUGHT OUT SIDE OF CASE NEAR BOTTOM WITH PRIMARY/SECONDARY LEADS SPLIT 180 DEGREES TRANSFORMER TO BE SUPPLIED WITH CYLINDRICAL DECORATIVE COVER - COLOR BLACK. TRANSFORMER POTTING COMPOUND TO EXTEND TO LOWER LIP OF COVER TO PROVIDE FLUSH MOUNTING SURFACE MOUNTING: SINGLE CENTER 3/8 - 16 THREADED INSERT (must be a 3/8 = 0.375 = 9.525mm mounting hole) EXTENDING A MINIMUM OF 2 FROM BOTTOM ISOLATION PAD: 1/4 THICK NEOPRENE RUBBER B&K COMPONENTS LTD. SizeNumberRev A1500VA MULTI SEC/PRI SK-RWW-5/31/99-A Date10/22/99 Drawn ByRWW/SBS D 7/8/99 Chg. Sec. Voltage from 48V to 52 V Added Lead Routing Spec Added Mounting Insert Spec Rev A P/N 12786 Rev B Added Potting Spec Added Mounting Insert Length Spec Added Lead Termination Specs 8/30/99 ALL LEADS EXCEPTTERMINATED WITH 0.250 INSULATED FEMALE DISCONNECT (PANDUIT DNF14-250FIB OR APPD EQUIV.) TERMINATED WITH VINYL INSULATED RING TERMINAL FOR #10 STUD (PANDUIT PV12-10HDR OR APPD EQUIV.) 1 1 1 1 52V 52V Rev CIncreased Max. Diameter to 6.75 Isolation Pad Specifications: 1/4 Thick Neoprene Rubber 9/22/99 Rev DIncreased length of all wires 1 inch - primaries and secondaries.10/22/99 3ULQWHG?&LUFXLW?%RDUGV3ULQWHG?&LUFXLW?%RDUGV 3&%V3&%V B&K COMPONENTS, LTD. 2100 Old Union Road Buffalo, New York 14227-2725 U.S.A. %LOO?RI?0DWHULDOV?%LOO?RI?0DWHULDOV? %20V%20V B&K COMPONENTS, LTD. 2100 Old Union Road Buffalo, New York 14227-2725 U.S.A. Bill of Material for 10842b00.Bom Used Part Type Designator Footprint Description = = = = = 5 .12uF C8 C9 C10 RAD200 CAPACITOR C15 C16 10 .47 5W RP1 RP2 R5W.S 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 DIODE 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 LATERAL 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 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 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_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 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 PC 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.Bom Used 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 35RAPC7J 1 PC_PAD CON1 RCA.X1 R/W AUD CONN COMMON SHELL X 1 1 PC_PAD CON2 SIP5 Bill of Material for 12816a00.Bom Used 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 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 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 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 CONNECTOR 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 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 W18 Bill of Material for 12943-00.Bom Used 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 RCA RCA1 RCA2 PCB_RCA RCA CONNECTOR