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1、 Service Manual Version: .2 Model: AMX-120 RadioFans.CN 收音机爱 好者资料库 CONTENTS 1. Specification 2. Block Diagram 3. Schematic Diagram 4. Printed Circuit Board 5. Wiring Diagram 6. Test Procedure 7. Electrical Parts List 8. Exploded Views & Mechanical Parts List 9. Notes RadioFans.CN 收音机爱 好者资料库 17 8. TE
2、CHNICAL SPECIFICATION Mono input channels Stereo input channels Impedances Equalization Microphone input electronically balanced, discrete input configuration Frequency response 10Hz to 55kHz, +3dB Distortion (THD & N) 0.005% at +4dBu, 1kHz Gain range 0dB to 44dB (MIC) SNR (Signal to Noise Ratio) 11
3、5dB Line input electronically balanced Frequency response 10Hz to 55kHz, +3dB Distortion (THD & N) 0.005% at +4dBu, 1kHz Sensitivity range +15dBu to30dBu Line input Unbalanced Frequency response 10Hz to 55kHz,3dB + Distortion (THD & N) 0.005% at +4dBu, 1kHz Microphone input 1.4kOhm Channel Insert re
4、turn 2.5kOhm All other inputs 10kOhm or greater Tape out 1kOhm All other output 120Ohm Hi shelving +15dB 12kHz Mid bell +12dB 2.5kHz Low shelving +15dB 80Hz Low Cut filter 75Hz, 18dB/oct. Main Mix Section Noise (Bus noise) Fader 0 dB, channels muted:100dBr (ref.:+4dBu) Fader 0dB, all input channels
5、assigned and set to UNITY gain:90dBr (ref.:+4dBu) Max output +22dBu unbalanced, 1/4 jacks AUX Sends max out +22dBu Power supply (AC/AC Adaptor) Main voltage USA/Canada 100120V, 60Hz Europe 210240V, 50Hz U.K./Australia 240V, 50Hz Power Consumption 11 watts Physical Net weight 1.65Kg (3.65lb) Shipping
6、 weight 2.3Kg (5.11lb) Dimension (WDH) 208mm275.5mm35/43mm (6.067.811.01/1.30) 1.Specification RadioFans.CN 收音机爱 好者资料库 12345678 A B C D 87654321 D C B A AMX-120MAP.Sch Titel Size File: Date: Drawn By: Sheet RevisionModel No: 19-Dec-2003 ALTO MIXING CONSOLE 11of AMX-120 BLOCK DIAGRAM VER031216 A2(C)
7、MONO INPUT CHANNELS ( 1-2 ) 2 1 3 MIC IN +48V 3-BAND EQ 12K2.5K80 SG/OL LEFT-BUS RIGHT-BUS AUX-1 RIGHT-BUS LEFT-BUS AUX-1 STEREO INPUT CHANNELS (3-10) LEFT-BUS RIGHT-BUS AUX-1 AUX-1 AUX SEND MAIN OUT LEFT-BUS RIGHT-BUS 2 1 3 2TK TO MIX 2 1 3RIGHT-BUS LEFT-BUS TAPE IN RIGHT 2-TRACK 2 1 3 2TK TO CTRL
8、ROOM 2 1 3 PHONES OUTPUT LEFT METER RIGHT METER +/-15db MAIN MIX AUX SEND1 T R S MAIN MIX LEFT T R S MAIN MIX RIGHT T R S CONTROL ROOM OUTPUT LEFT T R S RIGHT T R S PHONES T R S & PHONES CONTROL ROOM LEFT TAPE OUT LEVEL PAN PHANTOM LINE IN GAIN - + POWER LOMIDHI 12 12 AUX1 LEVEL POST PRE BALANCE AUX
9、1 LEVEL SG/OL 3c 5e 1a 4d 2b LEFT(MONO) 3c 5e 1a 4d 2b RIGHT T R S RN TN T R S RN TN - + - + MIC GAIN:060dB LINE IN TRIM:+15dB-45dB EFX SEND EFX SEND LEFT-BUS RIGHT-BUS AUX-1 EFX SEND 12 12 POST PRE 2TK IN LEVEL 2.Block Diagram 12345678 A B C D 87654321 D C B A AMX-120.Sch Titel Size File: Date: Dra
10、wn By: Sheet RevisionModel No: 3-Jan-2004 KEVIN LIN. INPUT STAGE ( CH1-CH4 ) 41of AMX-120 VER031229 A2 EQ HI 12KHZ C131 18n(M) VR4 B50K R151 6K8 VR3 B50K R150 6K8 LO R47 10K0 C87 47u/25V 5 6 7 U9B NJM4580M R220 1M C179 22P R212 1K1 VR5 B50K R137 1K3 MID R196 910R C155 12n(M) R197 910R C139 33n(M) C1
11、40 33n(M) C171 12n(M) C163 18n(M) C88 47u/25V VR11 W50K R228 47K R248 4K7 C195 2.2u/50V R152 6K8 TR2 BR TR1 BR R264 1K5 +VCC LD1 RED R236 22K 3 2 1 U9A NJM4580M VR9 W50K PEAK C89 47u/25V R256 3K9 R270 36K C180 22P C90 47u/25V R284 5K11 AUX-1 LEVEL AUX-POST R287 5K11 R286 5K11 LEFT-BUS RIGHT-BUS PAN
12、PGND 80HZ 2.5K EQ HI 12KHZ C132 18n(M) VR7 B50K R155 6K8 VR6 B50K R154 6K8 LO R55 10K0 C94 47u/25V 5 6 7 U10B NJM4580M R221 1M C181 22P R213 1K1 VR8 B50K R139 1K3 MID R198 910R C156 12n(M) R199 910R C141 33n(M) C142 33n(M) C172 12n(M) C164 18n(M) C95 47u/25V VR14 W50K R229 47K R249 4K7 C196 2.2u/50V
13、 R156 6K8 TR4 BR TR3 BR R265 1K5 +VCC LD2 RED R237 22K 3 2 1 U10A NJM4580M VR12 W50K PEAK C96 47u/25V R257 3K9 R271 36K C183 22P C98 47u/25V R288 5K11 AUX-1 LEVEL AUX-POST R291 5K11 R290 5K11 LEFT-BUS RIGHT-BUS PAN 80HZ 2.5K AMX-120 AMX-120.S01 AMX-120 AMX-120.S03 J2 POST (PRE) J1 POST (PRE) (SOLTON
14、1K2) MIC GAIN=-10-60dB LINE IN GAIN=+10-40dB VR1 O10K C1 470P C15 22u/35V R19 11K0 LINE IN1 MIC 1 C21 47u/63V R23 3K6 R15 6K81 1/4W PH PWR C3 470P R16 6K81 1/4W C22 47u/63V C4 47P R20 11K0 R24 3K6 C16 22u/35V R69 51K1 R68 51K1 C2 470P 2 1 3 4 X1 SMC-6.02 R3 5K11 R4 5K11 C27 22P C28 22P R26 10K0 R73
15、27R 1% C23 1000u/10V 3 2 1 U1A NJM4580M R25 10K0 R27 5K11 C29 22P R28 5K11 C30 22P C17 47u/25 R5 20K 1% 3c 5e 1a 4d 2b X3 JY-6351G-02-250 5 6 7 U1B NJM4580M 3 2 1 U5A NJM4580M R2 4R7 R1 4R7 VR2 O10K C5 470P C18 22u/35V R21 11K0 LINE IN2 MIC 2 C24 47u/63V R29 3K6 R17 6K81 1/4W PH PWR C10 470P R18 6K8
16、1 1/4W C25 47u/63V C11 47P R22 11K0 R30 3K6 C19 22u/35V R386 51K1R8 51K1 C7 470P 2 1 3 4 X2 SMC-6.02 R10 5K11 R11 5K11 C31 22P C32 22P R32 10K0 R74 27R 1% C26 1000u/10V 3 2 1 U2A NJM4580M R31 10K0 R33 5K11 C33 22P R34 5K11 C34 22P C20 47u/25 R12 20K 1% 3c 5e 1a 4d 2b X4 JY-6351G-02-250 5 6 7 U2B NJM
17、4580M 3 2 1 U25A NJM4580M R38 4R7 R37 4R7 VR10 W50K R77 4K7 R78 4K7 VR13 W50K R79 4K7 R80 4K7 AMX-120 AMX-120.S02 84 U2C 84 U1C 84 U9C C203 100n C204 100n +VCC -VCC C205 100n C206 100n C299 100n C300 100n 84 U10C C301 100n C302 100n 84 U5C 84 U3C 84 U4C C287 100n C288 100n C289 100n C290 100n C291 1
18、00n C292 100n VR15 W50K R105 47K R114 4K7 C106 2.2u/50V R91 6K8 TR6 BR TR5 BR R135 1K5 +VCC LD3 RED R125 22K 3 2 1 U4A NJM4580M VR19A W50K PEAK C53 47u/25V R141 3K9 R153 36K C110 22P C56 47u/25V R168 8K2 AUX-1 LEVEL AUX-POST R169 12K R170 12K LEFT-BUS RIGHT-BUS BAL PGND R40 10K0 R41 10K0 R104 47K R1
19、26 22K 5 6 7 U4B NJM4580M VR19B W50K C54 47u/25V R142 3K9 R149 36K C111 22P C55 47u/25V LEVEL R96 10K0 R95 10K0 3c 5e 1a 4d 2b X5 JY-6351G-02-250 T R S RN TN LINE IN 3/4 3c 5e 1a 4d 2b X6 JY-6351G-02-250 T R S RN TN LEFT(MONO) RIGHT 3 2 1 U3A NJM4580M R39 10K0 C9 22P C51 47u/25V R14 10K0 C6 22P R6 1
20、0K0 C126 100P R7 10K0 C127 100P 5 6 7 U3B NJM4580M R36 10K0 C12 22P C52 47u/25V R35 10K0 C8 22P R9 10K0 C128 100P R13 10K0 C129 100P R187 20K R186 20K J3 POST (PRE) R112 4K7 R113 4K7 5 6 7 U5B NJM4580M R263 62K R267 1K3 R273 20K C208 47u/25V C198 0.22u/50V C199 0.22u/50V R269 6K8 LO CUT SW3A PS-22E8
21、5L SW3B PS-22E85L C200 0.22u/50V 5 6 7 U25B NJM4580M R266 62K R268 1K3 R274 20K C209 47u/25V C201 0.22u/50V C202 0.22u/50V R272 6K8 LO CUT SW4A PS-22E85L SW4B PS-22E85L C207 0.22u/50V 84 U25C C210 100n C211 100n SW5A PS-22E85L SW5B PS-22E85L R302 1K2 R303 1K2 +4/-10 DB +4/-10 DB AMX-120 (1/4) VR20 W
22、50K UNINSERTED 3.Schematic Diagram 12345678 A B C D 87654321 D C B A AMX-120.S01 Titel Size File: Date: Drawn By: Sheet RevisionModel No: 3-Jan-2004 KEVIN LIN. INPUT STAGE ( CH5-CH8) 42of AMX-120 VER021229 A2 VR17 W50K R109 47K R120 4K7 C108 2.2u/50V R93 6K8 TR10 BR TR9 BR R138 1K5 +VCC LD5 RED R129
23、 22K 3 2 1 U20A NJM4580M VR23A W50K PEAK C65 47u/25V R145 3K9 R160 36K C114 22P C68 47u/25V R176 8K2 AUX-1 LEVEL AUX-POST R174 12K R175 12K LEFT-BUS RIGHT-BUS BAL PGND R63 10K0 R64 10K0 R108 47K R130 22K 5 6 7 U20B NJM4580M VR23B W50K C66 47u/25V R146 3K9 R159 36K C115 22P C67 47u/25V LEVEL R100 10K
24、0 R99 10K0 3c 5e 1a 4d 2b X9 JY-6351G-02-250 T R S RN TN LINE IN 7/8 3c 5e 1a 4d 2b X10 JY-6351G-02-250 T R S RN TN LEFT(MONO) RIGHT 3 2 1 U18A NJM4580M R62 10K0 C40 22P C63 47u/25V R59 10K0 C37 22P R54 10K0 C136 100P R56 10K0 C137 100P 5 6 7 U18B NJM4580M R61 10K0 C41 22P C64 47u/25V R60 10K0 C39 2
25、2P R57 10K0 C138 100P R58 10K0 C143 100P R191 20K R190 20K J5 POST (PRE) R118 4K7 R119 4K7 84 U19C 84 U18C C151 100n C150 100n +VCC -VCC C153 100n C152 100n 84 U20C 84 U21C C154 100n C157 100n C158 100n C159 100n U18 U21=NJM4580M VR16 W50K R107 47K R117 4K7 C107 2.2u/50V R92 6K8 TR8 BR TR7 BR R136 1
26、K5 +VCC LD4 RED R127 22K 3 2 1 U21A NJM4580M VR21A W50K PEAK C58 47u/25V R143 3K9 R157 36K C112 22P C60 47u/25V R172 8K2 AUX-1 LEVEL AUX-POST R171 12K R173 12K LEFT-BUS RIGHT-BUS BAL PGND R49 10K0 R50 10K0 R106 47K R128 22K 5 6 7 U21B NJM4580M VR21B W50K C59 47u/25V R144 3K9 R158 36K C113 22P C62 47
27、u/25V LEVEL R98 10K0 R97 10K0 3c 5e 1a 4d 2b X7 JY-6351G-02-250 T R S RN TN LINE IN 5/6 3c 5e 1a 4d 2b X8 JY-6351G-02-250 T R S RN TN LEFT(MONO) RIGHT 3 2 1 U19A NJM4580M R48 10K0 C14 22P C57 47u/25V R45 10K0 C13 22P R42 10K0 C130 100P R43 10K0 C133 100P 5 6 7 U19B NJM4580M R53 10K0 C35 22P C61 47u/
28、25V R52 10K0 C36 22P R44 10K0 C134 100P R51 10K0 C135 100P R188 20K R189 20K J4 POST (PRE) R115 4K7 R116 4K7 SW6A PS-22E85L SW6B PS-22E85L R304 1K2 R305 1K2 SW7A PS-22E85L SW7B PS-22E85L R306 1K2 R307 1K2 +4/-10 DB +4/-10 DB +4/-10 DB +4/-10 DB VR22 W50K VR24 W50K AMX-120 (2/4) UNINSERTED UNINSERTED
29、 12345678 A B C D 87654321 D C B A AMX-120.S02 Titel Size File: Date: Drawn By: Sheet RevisionModel No: 3-Jan-2004 KEVIN LIN. INPUT STAGE ( CH9-CH10) 43of AMX-120 VER021229 A2 84 U11C +VCC -VCC 84 U12C C184 100n C185 100n C186 100n C187 100n U18 U21=NJM4580M VR18 W50K R111 47K R123 4K7 C109 2.2u/50V
30、 R94 6K8 TR12 BR TR11 BR R140 1K5 +VCC LD6 RED R133 22K 3 2 1 U12A NJM4580M VR28A W50K PEAK C99 47u/25V R147 3K9 R166 36K C124 22P C101 47u/25V R184 8K2 AUX-1 LEVEL AUX-POST R183 12K R185 12K LEFT-BUS RIGHT-BUS BAL PGND R86 10K0 R87 10K0 R110 47K R134 22K 5 6 7 U12B NJM4580M VR28B W50K C100 47u/25V
31、R148 3K9 R167 36K C125 22P C103 47u/25V LEVEL R102 10K0 R101 10K0 3c 5e 1a 4d 2b X19 JY-6351G-02-250 T R S RN TN LINE IN 9/10 3c 5e 1a 4d 2b X20 JY-6351G-02-250 T R S RN TN LEFT(MONO) RIGHT 3 2 1 U11A NJM4580M R85 10K0 C48 22P C97 47u/25V R84 10K0 C47 22P R81 10K0 C146 100P R82 10K0 C147 100P 5 6 7
32、U11B NJM4580M R90 10K0 C49 22P C102 47u/25V R89 10K0 C50 22P R83 10K0 C148 100P R88 10K0 C149 100P R201 20K R202 20K J6 POST (PRE) R121 4K7 R122 4K7 8 9 14 U8C LM339 1 6 7 U8B LM339 1 6 7 U7B LM339 8 9 14 U7C LM339 LD9 GR LD11 GR LD13 GR LD15 GR R245 120R R246 110R R252 150R R254 1K R253 820R +VCC R
33、251 10R -VCC PGND 10 11 13 U8D LM339 5 4 2 U8A LM339 5 4 2 U7A LM339 10 11 13 U7D LM339 LD10 GR LD12 GR LD14 GR LD16 GR LEFT METER (-20)(0) 3 2 1 U6A NJM4580M R258 100K R259 100K C190 47u/25V PGND TR13 HR +VCC D1A DA204K D1B DA204K TR14 HR R225 120R R250 470R R247 470R R103 10K0 PGND 5 6 7 U6B NJM45
34、80M R255 100K R260 100K C191 47u/25V PGND 312 U8E LM339 312 U7E LM339 84 U6C NJM4580M C182 100n C178 100n R243 47R R242 47R C104 47u/25V C105 47u/25V +VCC -VCC PGND LD7 RED LD8 GR R124 4K7 R244 2K PGND PGND PH PWR (+5)(+18) PWR ON PHANTOM +VCC R262 10K0 R261 10K0 PGNDPGND D2 RLS4148 D3 RLS4148 D4 RL
35、S4148 D5 RLS4148 L-METER R-METER -VCC SW8A PS-22E85L R308 1K2 +4/-10 DB SW8B PS-22E85L R309 1K2 +4/-10 DB VR29 W50K AMX-120 (3/4) UNINSERTED 12345678 A B C D 87654321 D C B A AMX-120.S03 Titel Size File: Date: Drawn By: Sheet RevisionModel No: 3-Jan-2004 KEVIN LIN. STEREO AUX & SENDS & MAIN OUT & 2T
36、K & CTRL R & PHONES 44of AMX-120 VER031229A2 C188 100P C69 47u/25V R203 15K R131 22K C189 100P C75 47u/25V R204 15K R132 22K VR26B W50K VR26A W50K 3 2 1 U13A NJM4580M 5 6 7 U13B NJM4580M R205 30K C43 22P C77 47u/25V R177 5K11 R206 30K C44 22P C78 47u/25V R180 5K11 5 6 7 U14B NJM4580M 3 2 1 U14A NJM4
37、580M R178 5K1 C116 22P LEFT-BUS RIGHT-BUS C117 22P R179 5K1 C71 47u/25V C81 47u/25V 5 6 7 U15B NJM4580M 3 2 1 U15A NJM4580M R163 30K C119 22P R230 3K6 C72 47u/25V VR25B W50K MAIN MIX VR25A W50K R162 30K C118 22P R231 3K6 C73 47u/25V C74 47u/25V C83 47u/25V R65 10K0 R72 10K0 R211 120R 3c 5e 1a 4d 2b
38、X12 JY-6351G-02-250 R210 120R 3c 5e 1a 4d 2b X15 JY-6351G-02-250 R218 120R R209 120R MAIN OUT LEFT RIGHT R232 1K R233 1K L(WHITE) R(RED) C84 47u/25V R195 20K 3 2 1 U16A NJM4580M R200 20K C123 22P C85 47u/25V R75 10K0 R182 5K11 C76 47u/25V R193 20K 5 6 7 U16B NJM4580M R194 20K C120 22P C79 47u/25V R6
39、6 10K0 R181 5K11 TAPE IN 1 2 3 SW1A PS-22E85L LEFT-BUS 4 5 6 P SW1B PS-22E85L RIGHT-BUS 2TK TO MIX 1 2 3 SW2A PS-22E85L R234 27K 2TK TO 3 2 1 U17A NJM4580M VR27A W50K C80 47u/25V R238 7K5 R164 36K C46 22P C82 47u/25V R67 10K0 3 2 1 U23A BA15218N 5 6 7 U23B BA15218N 3c 5e 1a 4d 2b X18 JY-6351G-02-250
40、 R223 120R R219 120R CTRL ROOM OUT C122 22P R71 10K0 R216 120R 3c 5e 1a 4d 2b X16 JY-6351G-02-250 R217 120R PHONES R215 120R R214 120R 4 5 6 P SW2B PS-22E85L R235 27K 5 6 7 U17B NJM4580M VR27B W50K C86 47u/25V R239 7K5 R165 36K C45 22P C93 47u/25V R76 10K0 3c 5e 1a 4d 2b X17 JY-6351G-02-250 3 2 1 U2
41、2A BA15218N 5 6 7 U22B BA15218N R224 120R R222 120R R70 10K0 C121 22P 84 U22C BA15218N 84 U23C BA15218N R241 47R R240 47R C91 47u/25V C92 47u/25V AUX RETURNS L-METER R-METER 3c 5e 1a 4d 2b X11 JY-6351G-02-250 AUX SENDS R208 120R R207 120RR192 20K C70 47u/25V 3 2 1 U24A NJM4580M R161 36K C42 22P AUX-
42、1 ROOM C144 100P C145 100P TAPE OUT MAIN MIX T R S RN TN LEFT-BUS RIGHT-BUS T R S RN TN T R S RN TN LEFT RIGHT R226 18K R227 18K CONTROL PHONES/ CTRL ROOM 14 25 3 6 X21 SCP6873NS3232 LEFT RIGHT C176 100n C177 100n MOUT-L MOUT-R LEFT-BUS RIGHT-BUS AUX-1 84 U17C 84 U16C +VCC -VCC 84 U24C C160 100n C16
43、1 100n C162 100n C165 100n C166 100n C167 100n 84 U15C 84 U14C C168 100n C169 100n C170 100n C173 100n 84 U13C C174 100n C175 100n U24= NJM4580M U13 U17= NJM4580M EFXRTN-L EFXRTN-R C233 47u/25V 5 6 7 U24B NJM4580M R46 36K C38 22P R322 6K2 VR30 W50K AUX SENDS AMX-120 (4/4) D12 1N4002 D13 1N4002 ZD1 1
44、N5261 C401 47uF/100V D15 1N4002 D14 1N4002 C402 47uF/100V TR21 7815A C408 1000uF/35V PGND C403 47u/25VD16 RLS4148 C409 1000uF/35V C404 47u/25V D11 RLS4148 C405 100uF/100V PGND R441 390K C407 47uF/100V R442 10K0 R443 10R R440 20K C406 47uF/100V TR23 TIP122 +VCC -VCC PH PWR TR22 7915A PHANTOM PWR (47V
45、 0.5W) CN1 AC IN SW11 PGND R444 0R0 PHANTOM SW10 TR20 7805 PGND +5VD C400 1000uF/16V PGNDDGND R445 0R0 AMX-120 NOT USE PCB : AMX-120FX Top Overlay 4.Printed Circuit Board PCB : AMX-120FX Bottom Overlay PCB : AMX-120FX Bottom Layer 123456 A B C D 654321 D C B A Title NumberRevisionSize B Date:18-Dec-
46、2003Sheet of File:C:Documents and Settingspc75-vhfKENNYAMXAMX-120Protel 99 SEAMX-120.ddbDrawn By: 5.Wiring Diagram Wiring Diagram Voltage transform 7.Electrical Parts List 8.Exploded Views & Mechanical Parts List Machine type:AMX-120 Serial number:AMX120-00 Date:2004/01/03 ALTO AMX-120 NOItem NoItem
47、 Descriptionpcs 1 MA04536 panelAMX-120 ALTO 1 2 MB03080 rear boardAMX-1201 3 HI00026power switch RA12KKATOF 2P 1 4 HI00171power switchR612KKAT0F11 5NI02377knob5.5*7.5mm(3.3*3.3mm)6 6 NI01863key5.5*W10*7.52 7 NI02083knob10.5*18mm 6 8 NI02081knob10.5*18mm7 9 NI02082knob10.5*18mm 6 10 NI02817knob10.5*18mm 8 11 NI02714knob10*13.5mm 2 12 NI02837knob35*11mm 534C1 13 MG00041 screw M3*6 20 14 MG00061 screw M3*10 8 15 ME00060 nutJY-6351G-02-25016 16 MF00061 was
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