Gemini-BPM1000-mix-sm维修电路原理图.pdf

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Gemini-BPM1000-mix-sm维修电路原理图.pdf

Page 1 SERVICE MANUAL BPM-1000 Stereo Preamp Mixer CONTENTS: Connections GAIN KNOB INLAY (BLACK); BALANCE,CUE LEVEL, XF ASSIGN, MIC, BOOTH KNOB INLAY (GRAY); LOW, MID, HIGH, TREBLE, BASS KNOB ROTARY (A) KNOB ROTARY (B) VR INLAY COVER LED (M) HOLDER LED (M) COVER LED HOLDER LED PLATE DISPLAY (SMALL) HOLDER LED 3f (7mm) HOLDER LED 3f (17mm) PROTECTOR PLATE FOR 115/230V SWITCH PAD FOOT GND SCREW SCREEN (1) SCREEN (2) SCREEN PCB SUPPORT VR DUST PROOF CLOTH SWING DUST PROOF CLOTH; (30mm30mm,4f,T=0.3mm);88.1.5 EVA PAD SNAP RIVET PAN-HEAD MACHINE SCREW; PMS 2.6X4(B) PAN-HEAD MACHINE SCREW; PMS 2X4(B) BAND-HEAD TAPPING SCREW; BTS-3 3X6(AB) PAN-HEAD TAPPING SCREW/TWIN SCREW; PTS-2 3X6(AB) TWIN BAND-HEAD TAPPING SCREW; BTS-3 3X10(AB) BAND-HEAD MACHINE SCREW; BMS 3X2X4 FLAT-HEAD TAPPING SCREW; FTS-3 3X6(AB) FLAT-HEAD TAPPING SCREW; FTS-3 3X12(AB) NUT/WASHER BAND-HEAD TAPPING SCREW; BTS-3 3X5(AB) BAND-HEAD TAPPING SCREW/TW-E; BTB-3/TW-3 3X6(AB) 162-917 162-981 162-982 162-983 162-984 162-985 162-923 162-979 162-980 PRINTED CIRCUIT BOARD CDM1000-1; IN/OUT (94V0 76170mm) PRINTED CIRCUIT BOARD BPM1000-2; MAIN (94V0 275330mm) REV,A PRINTED CIRCUIT BOARD 1500-3; MIC1 PCB PRINTED CIRCUIT BOARD 1500-4; FADER PRINTED CIRCUIT BOARD BPM1000-5; MIC 2,3 I/P PCB (94V0 74153mm) PRINTED CIRCUIT BOARD 1500-6; PHONE PCB PRINTED CIRCUIT BOARD CDM1000-7; LED PCB (94V0 123221mm) PRINTED CIRCUIT BOARD BPM250-7 PRINTED CIRCUIT BOARD BPM250-8; BIT DISPLAY (CEM-1 41166mm) DescriptionPart # Printed Circuit Boards Item # 1 2 3 4 5 6 7 8 9 RadioFans.CN 收音机爱好者资料库 Page 6 Parts Lists - PCB1 Input/Output 079-003 081-027 161-105 SILICON DIODE 1N4148 SLIDE SWITCH LINE/PHONO SSSF122NA1-CE 4P RCA JACK P=14mm D1, D2 SW1 J1-5 DesignatorsDescriptionPart # Electrical Parts Item # 1 2 3 076-104 076-095 TRANSISTOR 2SA1048 (2SA1317) TRANSISTOR 2SC2878 Q1 Q2-5 DesignatorsDescriptionPart # Transistors Item # 1 2 074-104 074-145 INTEGRATED CIRCUIT NJM4558L INTEGRATED CIRCUIT NJM2068LD IC4, IC5 IC1, IC2, IC3 DesignatorsDescriptionPart # ICs Item # 1 2 Parts Lists - PCB2 Meter 079-003 080-079 080-080 080-078 SILICON DIODE 1N4148 LIGHT EMITTING DIODE (GREEN); 2.5x6.5 mm LIGHT EMITTING DIODE (YELLOW); 2.5x6.5 mm LIGHT EMITTING DIODE (RED); 2.5x6.5 mm D25-28 D1-7, D13-19, D29-35, D41-47, D53-60, D66-73 D8-9, D20-21, D36-37, D48-49, D61-62, D74-75 D10-12, D22-24, D38-40, D50-52, D63-65, D76-78 DesignatorsDescriptionPart # Electrical Parts Item # 1 2 3 4 076-104TRANSISTOR 2SA1048 (2SA1317)T1-12 DesignatorsDescriptionPart # Transistors Item # 1 074-040 074-148 INTEGRATED CIRCUIT HCF4066BE INTEGRATED CIRCUIT BA6822S IC2, IC3 IC1, IC4, IC5 DesignatorsDescriptionPart # ICs Item # 1 2 RadioFans.CN 收音机爱好者资料库 Page 7 Parts Lists - PCB4 Main 082-019 082-022 083-069 083-081 092-090 080-091 072-101 071-119 071-120 071-122 071-170 071-115 071-165 071-166 071-171 071-167 LEVER SWITCH 4P2C LEVER SWITCH 4P3C PUSH SWITCH 2P2C L=12.5 PUSH SWITCH 4P2C L=12.5 PHONE JACK 6.3f+ XLR LED (RED) 3.15f SLIDE VR 60mm L=20 10KA2 CH VOL MASTER ROTARY VR L=20 50KA2 CUE LEVEL ROTARY VR L=20 20KMN2 C.C BALANCE ROTARY VR L=20 10KA2 BOOTH ROTARY VR L=20 20KW2 CUE, PGM ROTARY VR L=22.5 10KB MIC1, MIC2 ROTARY VR L=22.5 10KB C.C HIGH, BASS ROTARY VR L=22.5 50KA2 CH1 3-GAIN ROTARY VR L=22.5 50KW2 CH4-GAIN ROTARY VR L=22.5 50KE2 C.C HI, MID, LOW S3, S4, S5 S6, SW1 SW3-4, SW6, SW8 S1, S2, S7 J1 D1-9 VR11, VR16, VR21, VR26, VR27 VR6 VR28 VR29 VR1 VR4, VR5 VR2, VR3 VR7, VR12, VR17 VR22 VR8-10, VR13-15, VR18-20, VR23-25 DesignatorsDescriptionPart # Electrical Parts Item # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 074-063 074-113 INTEGRATED CIRCUIT LA6458S INTEGRATED CIRCUIT NJM4556L IC2-13 IC1 DesignatorsDescriptionPart # ICs Item # 1 2 Parts Lists - PCB3 XLR 076-095TRANSISTOR 2SC2878Q1, Q2 DesignatorsDescriptionPart # Transistors Item # 1 074-104 074-145 074-107 074-114 INTEGRATED CIRCUIT NJM4558L INTEGRATED CIRCUIT NJM2068LD INTEGRATED CIRCUIT NJM7812FA INTEGRATED CIRCUIT NJM7912FA IC3 IC1, IC2 IC5 IC4 DesignatorsDescriptionPart # ICs Item # 1 2 3 4 079-027 092-078 092-118 RECTIFIER DIODE 1N4002 PHONE JACK 6.3f PHONE JACK XLR D1-8 J5 X8, X12 DesignatorsDescriptionPart # Electrical Parts Item # 1 2 3 RadioFans.CN 收音机爱好者资料库 RadioFans.CN 收音机爱好者资料库 Page 8 PCB2 - Meter RadioFans.CN 收音机爱好者资料库 PCB1 - Input/Output Page 7 RadioFans.CN 收音机爱好者资料库 Page 9 PCB3 - XLR RadioFans.CN 收音机爱好者资料库 +12V X16 +12V -12V MN J2A R26 1K C22 101 R22 47K R20 180 R24 8K2 R25 100K R19 10K R28 33 R27 33 C32 47/16 C26 47/16 2 3 1 48 IC2A 2068 +12V -12V C20 822 C21 273 C19 10/16 C24 100/16 R21 1K C23 101 R23 47K R34 180 R32 8K2 R31 100K R30 10K 6 5 7 IC2B 2068 C31 822 C30 273 C29 10/16 C25 100/16 J2B R36 1K R29 1K C34 101 C28 101 C33 4.7/35 C27 4.7/35 R35 9K1 R33 9K1 X2 J3A R44 1K C38 101 R42 47K R38 180 R39 8K2 R40 100K R37 10K R46 33 R45 33 C47 47/16 C42 47/16 2 3 1 48 IC3A 2068 +12V -12V C36 822 C37 273 C35 10/16 C40 100/16 R41 1K C39 101 R43 47K R52 180 R51 8K2 R50 100K R48 10K 6 5 7 IC3B 2068 C46 822 C45 273 C48 10/16 C41 100/16 J3B R54 1K R47 1K C50 101 C44 101 C49 4.7/35 C43 4.7/35 R53 9K1 R49 9K1 X3 J4A J4B R59 2K2 R56 2K2 R67 2K2 R64 2K2 C56 101 C57 101 C64 101 C60 101 C55 4.7/35 C63 4.7/35 C51 4.7/35 C62 4.7/35 R61 15K R60 15K R71 15K R65 15K X6 J5A R73 47 R78 47 R74 47K R77 47K C68 47/16 C70 47/16 Q3 2SC2878 Q2 2SC2878 2 3 1 48 IC4A 4558L 6 5 7 IC4B 4558L R58 33 R57 33 C54 47/16 C53 47/16 R62 130K R68 130K R69 20K R63 20K C66 4.7/16 C59 4.7/16 J5B R82 47 R89 47 R84 47K R88 47K C73 47/16 C74 47/16 B CE Q5 2SC2878 Q4 2SC2878 C76 4.7/16 C72 4.7/16 R70 4K7 R72 4K7 R85 4K7 R86 4K7 R55 680K C61 220/16 D1 1N4148 C52 4.7/35 D2 1N4148 +12V R79 330 R66 330 R91 330 R83 330 2 3 1 48 IC5A 4558L 6 5 7 IC5B 4558L R76 33 R75 33 C67 47/16 C69 47/16 +12V -12V R80 130K R90 130K R87 16K R81 16K C71 22 C75 22 C58 22 C65 22 X8 X7 X5 X9 X10 -12V +12V EC B Q1 2SA1317 X4 -12V +12V X6 VR18A 100KBx2 VR18B 100KBx2 TO X1 BPM PCB TO X1 METER TO X2 METER TO X3 METER TO X4 METER T R SJ6 X26 + 2 G 1 - 3 X8 + 2 G 1 - 3 X12 R34 47 R29 47 R33 47K R31 47K C2547/16 C2647/16 Q2 2SC2878 B CE Q1 2SC2878 2 3 1 48 IC3A 4558L 6 5 7 IC3B 4558L R24 33 R22 33 C21 47/16 C22 47/16 +12V R25 3K6 R28 3K6 R23 3K6 R21 3K6 R26 4K7 R27 4K7 R32 330 R30 330 C24 101 C23 101 -12V X5 X11 TO X8 TP D3 1N4002 D2 1N4002 D1 1N4002 D4 1N4002 C31 1000/25 C30 1000/25 C33 103 C34 103 C28 1/16 C27 1/16 +12V Vin 1 GND 2 +12V 3 IC5 7812 Vin 2 GND 1 -12V 3 IC4 7912 X7 X6 -12V X13 X4 TO X1 MN T1 SW5 115/230 FU1 0.5A SW6 C88 103 X16 C14 22/16 C15 22/16 C17 22/16 R11 1K 1% R12 1K 1% R15 5K1 1% R13 5K1 1% C18 101 C16 101 2 3 1 48 IC2A 2068 X3 R19 33 R20 33 C19 47/16 C20 47/16 +12V -12V R18 1K R17 1K T R S J2 C12 22/16R14 5K6 R16 5K6 C11 22/16 C8 22/16 C13 22/16 R6 1K 1% R7 1K 1% R5 30K1 1% R9 30K1 1% C7 101 C10 101 2 3 1 48 IC1A 2068 R10 33 R3 33 C6 47/16 C3 47/16 +12V -12V C1 22/16 C9 22/16 C4 22/16 R1 1K 1% R8 1K 1% R4 30K1 1% R2 30K1 1% C5 101 C2 101 6 5 7 IC1B 2068 X1 X2 T R S J1 1 3 2 T R S X32 X25 - + GND Left Left Left LeftLeft Left Left Left TO X9 TP TO X5 BTM Left TO X11 BTM Left TO X5 MTR +HOT +HOT S3 S4 S5 C106 22/16 R198 33 C120 22/16 C132 22/16 -12V C74 22/16 3 4 2 59 IC8A 4558S R22 20K R120 15K R122 33 R135 33 C77 22/16 C89 22/16 +12V -12V C82 22/16 7 6 8 IC8B 4558S R138 15K R34 20K R126 15K R129 15K C128 22/16 C129 22/16 3 4 2 59 IC11A 4558S 7 6 8 IC11B 4558S R181 33 R186 33 C102 22/16 C111 22/16 +12V -12V R176 330K 1% VR29A 10KAx2 VR29B 10KAx2 VR11B 10KAx2 VR11A 10KAx2 R68 7K5 R78 7K5 12 R47 7K5 12 R56 7K5 D4 LED R58 3K9 +12V R40 120K R39 30K R77 120K R76 30K VR16B 10KAx2 VR16A 10KAx2 R110 7K5 R116 7K5 R92 7K5 R96 7K5 D5 LED R100 3K9 +12V R82 120K R81 30K R119 120K R118 30K VR21B 10KAx2 VR21A 10KAx2 R160 7K5 R165 7K5 R139 7K5 R144 7K5 D6 LED R145 3K9 +12V R125 120K R124 30K R164 120K R166 30K C107 22/16 C133 22/16 VR26B 10KAx2 VR26A 10KAx2 R208 7K5 R219 7K5 R192 7K5 R195 7K5 D7 LED R196 3K9 +12V R173 120K R172 30K R222 120K R225 30K 3 4 2 59 IC1A 4556S 7 6 8 IC1B 4556S R5 10 R3 10 C13 470/16 C3 470/16 +12V PHONE -12V PHONE R1 13K R4 13K C11 22 C2 22 R12 180 R9 180 C10 47/16 C12 47/16 R11 100K R8 100K VR6A 50KAx2 VR6B 50KAx2 C1 1/16 C8 1/16 R36 20K R30 20K R24 20K R23 20K R18 10K R25 10K R216 10K VR1A 20KBx2 VR1B 20KBx2 3 4 2 59 IC3A 4558S 7 6 8 IC3B 4558S R27 33 R35 33 C25 22/16 C28 22/16 R33 150K R41 150K C21 22 C27 22 C24 22/16 C31 22/16 C23 4.7/16 C26 4.7/16 X2 SW1A SW1C SW1B R215 15K R220 15K R10 47 R2 47 C9 472 C4 472 GRD PHONE X1 R17 3K9 D2 LED C78 22/16 R147 33 C90 22/16 C99 22/16 -12V C76 22/16 C100 22/16 C52 22/16 R98 33 C62 22/16 C70 22/16 -12V C54 22/16 C72 22/16 C29 22/16 R59 33 C40 22/16 C48 22/16 -12V R52 1K5 R50 1K5 VR9A 50KEx2 VR10A 50KEx2 VR8A 50KEx2 C34 154 C36 562 C38 154 C37 103 7 6 8 IC5B 4558S R46 8K2 C30 22/16 C51 22/16 C33 682 R45 24K C35 56 R49 33K R48 4K7 SW3 SW4 SW5 SW6 R32 15K R31 15K C103 104 5% C104 104 5% C105 104 5% C110 104 5% C116 104 5% C117 104 5% R167 18K 1% R191 18K 1% R174 47K 1% R180 330K 1% R171 47K 1% C75 22 C88 22 R60 33 R43 1K5 R71 33 C41 22/16 C42 22/16 3 4 2 59 IC4A 4558S VR7A 50KAx2 C32 22 +12V -12V R70 1K5 7 6 8 IC4B 4558S VR7B 50KAx2 C45 22 R42 20K R69 20K R101 33 R84 1K5 R113 33 C63 22/16 C64 22/16 3 4 2 59 IC6A 4558S VR12A 50KAx2 C55 22 +12V -12V R112 1K5 7 6 8 IC6B 4558S VR12B 50KAx2 C67 22 R83 20K R111 20K R148 33 R131 1K5 R157 33 C91 22/16 C92 22/16 3 4 2 59 IC9A 4558S VR17A 50KAx2 C80 22 +12V -12V R156 1K5 7 6 8 IC9B 4558S VR17B 50KAx2 C96 22 R130 20K R155 20K R199 33 R170 5K6 R210 33 C121 22/16 C122 22/16 3 4 2 59 IC12A 4558S VR22A 50KBx2 C108 22 +12V -12V R209 5K6 7 6 8 IC12B 4558S VR22B 50KBx2 C123 22 R175 33K R18733K SW1D X6 X12 X18 R214 10K R51 33K R55 33K R57 5K6 R44 2K4 R53 3K6 R62 1K5 R74 1K5 VR9B 50KEx2 VR10B 50KEx2 VR8B 50KEx2 C50 154 C44 562 C47 154 C46 103 3 4 2 59 IC5A 4558S R64 8K2 C49 682 R75 24K C43 56 R63 33K R72 4K7 R65 33K R67 33K R61 5K6 R73 2K4 R66 3K6 R94 1K5 R89 1K5 VR14A 50KEx2 VR15A 50KEx2 VR13A 50KEx2 C56 154 C59 562 C61 154 C60 103 7 6 8 IC7B 4558S R88 8K2 C53 682 R87 24K C58 56 R90 33K R85 4K7 R93 33K R95 33K R99 5K6 R86 2K4 R91 3K6 R103 1K5 R115 1K5 VR14B 50KEx2 VR15B 50KEx2 VR13B 50KEx2 C73 154 C66 562 C69 154 C68 103 3 4 2 59 IC7A 4558S R106 8K2 C71 682 R117 24K C65 56 R104 33K R114 4K7 R107 33K R109 33K R102 5K6 R105 2K4 R108 3K6 R142 1K5 R134 1K5 VR19A 50KEx2 VR20A 50KEx2 VR18A 50KEx2 C81 154 C85 562 C87 154 C86 103 7 6 8 IC10B 4558S R128 8K2 C79 682 R127 24K C84 56 R136 33K R132 4K7 R141 33K R143 33K R146 5K6 R133 2K4 R137 3K6 R152 1K5 R163 1K5 VR19B 50KEx2 VR20B 50KEx2 VR18B 50KEx2 C101 154 C94 562 C95 154 C98 103 3 4 2 59 IC10A 4558S R150 8K2 C97 682 R162 24K C93 56 R158 33K R161 4K7 R151 33K R154 33K R149 5K6 R159 2K4 R153 3K6 R189 1K5 R185 1K5 VR24A 50KEx2 VR25A 50KEx2 VR23A 50KEx2 C115 154 C113 562 C119 154 C114 103 7 6 8 IC13B 4558S R179 8K2 C109 682 R178 24K C112 56 R184 33K R183 4K7 R188 33K R194 33K R197 5K6 R177 2K4 R190 3K6 R205 1K5 R213 1K5 VR24B 50KEx2 VR25B 50KEx2 VR23B 50KEx2 C131 154 C125 562 C127 154 C126 103 3 4 2 59 IC13A 4558S R203 8K2 C130 682 R218 24K C124 56 R211 33K R217 4K7 R204 33K R207 33K R200 5K6 R212 2K4 R206 3K6 R193 33 C118 22/16 +12V R140 33 C83 22/16 +12V R54 33 C39 22/16 +12V R97 33 C57 22/16 +12V D1 LED R16 3K9 -12V C7 10/16 C22 47/16 C20 47/16 R28 1K3 R19 1K R20 3K9 R13 1K3 C17 224 C16 224 C14 223 C18 223 3 4 2 59 IC2A 2068S VR4 10KB VR3 10KB VR2 10KB VR5 10KB R29 1K R21 1K R6 33 C5 47/16 R7 33 C6 47/16 -12V C19 681 R14 1K8 C15 221 7 6 8 IC2B 2068S R15 51K X5 X8 X11 X15 X14 R182 1M R202 1M S6A R26 100K R201100K S6B S6D S6C X4 X7 X10 X13 GRD PHONE GRD PHONE S1 R38 20K R79 20K R80 20K R121 20K R123 20K R168 20K R169 20K R221 20K S2 S7 -12V D3 LED D8 LED R37 3K9 R226 3K9 CROSSFADER OFF CROSSFADER OFF SW7C SW7A SW7B SW2C SW2A SW2B X9 VR27A 10KAx2 VR27B 10KAx2 R VR28A 20KMNx2 L VR28B 20KMNx2 R227 3K9 D9 LED -12V X17 SW8 R223 1K R224 1K X3 C135 22/16 C134 22/16 LEFT RIGHT LEFT RIGHT R92 1K 1L 1R 1G J1A R1 1KC4 101 R3 47K R5 180 R7 8K2 R8 100K R4 10K R17 33 R9 33 C18 47/16 C12 47/16 2 3 1 48 IC1A 2068 +12V -12V C7 822 C8 273 C2 10/16 C6 100/16 R2 1KC5 101 R6 47K R16 180 R15 8K2 R14 100K R12 10K 6 5 7 IC1B 2068 C17 822 C13 273 C16 10/16 C11 100/16 C3 4.7/35 C1 4.7/35 2L 2R 2G J1B R18 1K R10 1K C15 101 C10 101 C14 4.7/35 C9 4.7/35 R13 9K1 R11 9K1 X1 SW1A SW1B Right Left Right Right Right Left Left Left TO X2 BPM.PCB TO X6 METER TP TO X6 BTM TP IN/OUT PCB XLR PCB IN/OUT PCB XLR PCB XLR PCB D5 1N4002 D6 1N4002 D8 1N4002 D7 1N4002 X10 C32 1000/25 C29 1/16 X9 Vin 1 GND 2 Vout 3 IC6 7805 C1 472/400V CHASIS GROUND SW1 GROUND LIFT MAIN PCB Page 12 Schematic RadioFans.CN 收音机爱好者资料库 1112 13 14 15 1 9 8 7 5 10 4 2 6 3 16 17 18 19 20 21 22 BA6820 IC5 D65 D64 D63 D62 D61 D60 D59 D58 D57 D56 D55 D54 D67 D68 D69 D70 D71 D72 D73 D74 D75 D76 D77 D78 T12 2SA1317 T11 2SA1317 T10 2SA1317 T9 2SA1317 R43 390 R42 390 R44 390 R45 390 LR +10 +7 +4 +2 0 -2 -4 -7 -10 -20 -30 -38 +5V GND GND +5V C25 22/6.3 C23 22/6.3 R39 24K R40 24K GND +5V GND R41 39K C24 103 GND +5V GND R47 68 R49 68 R5068 R5168 R52180 R48 180 D66 D53 1112 13 14 15 1 9 8 7 5 10 4 2 6 3 16 17 18 19 20 21 22 BA6820 IC1 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D13 D14 D15 D16 D17 D18 D19 D20 D21 D22 D23 D24 T2 2SA1317 T1 2SA1317 T4 2SA1317 T3 2SA1317 R11 390 R9 390 R6 390 R5 390 CH1CH2 +10 +7 +4 +2 0 -2 -4 -7 -10 -20 -30 -38 +5V GND GND +5V C5 22/6.3 C1 22/6.3 R10 24K R12 24K GND +5V GND R15 39K C6 103 GND +5V GND R8 68 R7 68 R2 68 R3 68 R4 180 R1 180 1112 13 14 15 1 9 8 7 5 10 4 2 6 3 16 17 18 19 20 21 22 BA6820 IC4 D40 D39 D38 D37 D36 D35 D34 D33 D32 D31 D30 D29 D41 D42 D43 D44 D45 D46 D47 D48 D49 D50 D51 D52 T6 2SA1317 T5 2SA1317 T8 2SA1317 T7 2SA1317 R32 390 R30 390 R28 390 R26 390 CH-3CH-4 +10 +7 +4 +2 0 -2 -4 -7 -10 -20 -30 -38 +5V GND GND +5V C15 22/6.3 C14 22/6.3 R31 24K R35 24K GND +5V GND R36 39K C19 103 GND +5V GND R29 68 R27 68 R2368 R2468 R25180 R22 180 C26 100/6.3 C4 100/6.3 C16 100/6.3 +5V +5V GND +5V GND R46 56 GND +5V C20 1/16 C21 1/16 C2 1/16 C3 1/16 R13 5K1 R14 5K1 R17 5K1 R16 5K1 GND R38 5K6 R37 5K6 R CH-1 LR CH-2 L R MASTER L C7 1/16 C8 1/16 in/out A 1 out/in A 2 cont A 13 in/out B 4 out/in B 3 cont B 5 in/out C 8 out/in C 9 cont C 6 cont D 12 in/out D 11 out/in D 10 VDD 14 VSS 7 IC2 4066 D27 1N4148D28 1N4148 D26 1N4148 D25 1N4148 C10 1/16 C9 1/16 R21 5K1 R19 5K1 R33 5K1 R34 5K1 R CH-3 LR CH-4 L C18 1/16 C17 1/16 in/out A 1 out/in A 2 cont A 13 in/out B 4 out/in B 3 cont B 5 in/out C 8 out/in C 9 cont C 6 cont D 12 in/out D 11 out/in D 10 VDD 14 VSS 7 IC3 4066 X6 C12 100/6.3 R20 2M2 R18 2M2 +5V C13 221 C11 221 GNDGND X1X2X3X4 X5 C22 100/6.3 GND GND T13 2SC4793 R53 150 D79 5.6V C29 100/6.3 +5V +5V METER PCB Page 11 Meter Schematic RadioFans.CN 收音机爱好者资料库

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