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Alto AMX 180FX-USB, Service Manual, Page: 1 / 36

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MODEL: AMX 180FX-USB

Summary of Contents for AMX 180FX-USB

Page 1: ...MODEL AMX 180FX USB...

Page 2: ...NT 1 INTRODUCTION 1 2 TECHNICAL SPECIFICATION 2 3 BLOCK DIAGRAM 35 4 SCHEMATIC DIAGRAM 47 5 WIRING DIAGRAM 1211 6 PCB LAYOUT 1313 7 TEST PROCEDURE 1819 8 EXPLODED VIEW MECHANICAL PARTS LIST 2529 9 BOM...

Page 3: ...annel Mute ALT 3 4 SOLO function on each channel 4 AUX returns for additional functionality Control room and headphone outputs 2 Track inputs assignable to main mix control room headphone outputs High...

Page 4: ...Max output 22dBu balanced XLR 22dBu unbalanced 1 4 jacks AUX Return gain range OFF to 15dB AUX Sends max out 22dBu Line input Balanced Frequency response Distortion THD N 0 005 at 4dBu 1KHz Impedance...

Page 5: ...ALT 3 L ALT 4 R ALT3 4 LEVEL ALT 3 4 OUT ALT 3 L T R S ALT 4 R T R S ALT 3 4 TO MIX RIGHT BUS LEFT BUS ALT 3 4 MAIN MIX CONTROL ROOM SOURCE MAIN ALT MAIN ALT 1 2 1 2 POST PRE 1 2 1 2 POST PRE POST PR...

Page 6: ...LD14 YEL SOLO R129 2K2 VCC LOGIC 2 0V or 0 5V SW14 MUTE ALT3 4 SW15 SOLO PFL EQ HI 12KHZ C70 18n M VR36A B50K R64 6K8 VR38A B50K R63 6K8 LO R90 10K C19 47u 25V 3 2 1 U7A 4580M R182 1M C146 22P R6 1K1...

Page 7: ...2E85L SW28B PS 22E85L 8 4 U18C 4580M 8 4 U17C 4580M 8 4 U20C 4580M 8 4 U21C 4580M 8 4 U13C 4580M 8 4 U16C 4580M 8 4 U19C 4580M 8 4 U22C 4580M C217 100n C219 100n C222 100n C225 100n C223 100n C226 100...

Page 8: ...0 GR LD49 GR LD48 GR LD47 GR LD46 GR VCC LEFT METER 30 20 10 7 4 2 0 2 5 6 7 U27B 4580M R399 36K R393 0R0 R395 100K C297 47u 25V PGND 10 11 13 U35D LM339 5 4 2 U35A LM339 5 4 2 U34A LM339 10 11 13 U34...

Page 9: ...7 8 AR2 680R 4 DGND DGND 5VD DGND 5VD 1 2 4 8 1 2 4 8 PRESET VARIATION CN11_16 R331_2 R335_2 C260_2 C261 4 7uF C262 4 7uF 3 5 7 RL1B RY 5W K 4 6 8 RL1C RY 5W K C263 4 7uF AUX SEND2 MUTE MUTE LD401 RED...

Page 10: ...D VINL VINR VOUTL VOUTR 1 2 3 4 CN4 USB B TYPE USB_GND D D 1 2 3 4 5 CN8 CON5 R101 10K R214 10K C101 22P 3 2 1 U20A 4580M R215 10K C105 22P 5 6 7 U20B 4580M R103 10K 3 2 1 U21A 4580M R221 56K C164 22...

Page 11: ...C47 22P C46 22P R77 10K R51 27R C41 1000u 10V R76 10K R59 5K11 C48 22P R62 5K11 C50 22P C94 47u 25V R140 20K 3c 5e 1a 4d 2b X1 JY 6351G 02 250 R128 62K R132 1K3 R142 20K C96 47u 25V C82 0 22u 50V C83...

Page 12: ...336 100N C337 100N C338 100N C339 100N VCC VCC 3 4 U49B 74HC14 5 6 U49C 74HC14 8 9 U49D 74HC14 12 13 U49F 74HC14 14 7 U49G 74HC14 DGND CLK 12 J 14 S 11 R 15 Q 10 Q 9 K 13 U48B 74HC109 DGND 16 8 U48C 7...

Page 13: ..._GND VINL VINR VOUTL VOUTR AMX USB R9 10R R7 1K5 C26 1n 3 2 1 U2A 4580M R14 3K9 C24 4 7nF R12 12K R10 4K7 C20 10uF C14 330P AGND AGND R18 100R R8 1K5 C27 1n 5 6 7 U2B 4580M R15 3K9 C25 4 7nF R13 12K R...

Page 14: ...D 8 7 6 5 4 3 2 1 D C B A AMX 180FX USB PCB AMX180FXMN1 USB PCB AMX180FXPU1 USB CN3 SW10 CN8 CN2 CN2 CN17 18VAC TG00041 AC 120V POWER SW AC IN P H A N T O M S W CN3 SW11 CN5 CN1 CN1 Voltage Converter...

Page 15: ...6 PCB LAYOUT 13...

Page 16: ...PCB AMX USB B Top Layer Top Overlay Top Solder PCB AMX USB Bottom Layer Bottom Overlay Bottom Solder 14...

Page 17: ...PCB AMX180FXMN1 USB Top Layer Top Overlay Top Solder PCB AMX180FXMN1 USB Bottom Layer Bottom Overlay Bottom Solder 15...

Page 18: ...PCB AMX180FXPU1 USB Bottom Layrt Botttom Overlay Bottom Solder PCB AMX180FXPU1 USB Top Layrt Top Overlay Top Solder 16...

Page 19: ...PCB DSP PRE Bottom Layer Bottom Overlay Bottom Solder PCB DSP PRE Top Layer Top Overlay Top Solder 17...

Page 20: ...wer switch the POWER led will light up Then open the PHANTOM switch the PHANTOM led will light up The second and third pin on each MIC output socket MIC1 MIC2 MIC3 MIC4 MIC MONO has 48V PHANTOM voltag...

Page 21: ...TK TO CONTORL ROOM the output is 4dBu 2dB THD N 0 002 8 Input 15dBu 1KHz SINE wave Load out 600 BNC Unbal from LINE1 press the MAIN MIX TO CONTROL ROOM turn the MAIN MIX LEVEL to min the LED LEVEL wil...

Page 22: ...2 When put the EQ HI LOW knob to max and min EQ MID is mid the frequency response curve is 3 Set the EQ MID knob to max and min EQ HI LOW is in mid respectively the frequency response curve is 20...

Page 23: ...for testing DSP Input signal from MIC1 to MIC4 input signal from AUX SENDS1 at the moment turn the AUX2 AUX2 SEND AUX RTN2 DFX to max and turn the AUX1 to min rotate the PRESETS and ARATIONS knob it...

Page 24: ...s the playing key the output is 0dBu 2dB THD N 2 5 AP input 0dBu connect the balanced input to MIC1 MIC2 CH1 CH2 and rotate the LEVEL on these to max set the unbalanced output in MAIN MIX OUTPUT and t...

Page 25: ...the signal set the unbalanced output in MAIN MIX OUTPUT switch the USB RECORD to MAIN MIX the USB PLAYBACK to MAIN MIX connect the USB line to PC and open the recorder to tape for 60 seconds 10 After...

Page 26: ...he AMX 180FX USB to high quality amplifier and speaker and listen if there has abnormal noise 9 Factory Preset rotate the entire volume control knob to min and the other control knob in mid and close...

Page 27: ...8 EXPLODED VIEW PARTS LIST 25...

Page 28: ...tch RS RA12KKATOF 2P 1 22 HC00601 DC socket RS SCD554CCS003000 1 23 NI00378 plastic washer RS C 9 13 used to PU socket 1 24 NC00037 ZD cushion XM1602 07 1t 8 12 5mm XM1602 V1 0 1 25 ME00143 nickle nut...

Page 29: ...NI02386 konb 14 13mm 24 NI01863 key RS 5 5 W10 7 5 25 NI01862 key 5 5 5 5 14 5_V1 1 26 NI02817 knob 10 5 18mm 27 NI02309 knob 24 11 5 11_V1 1 28 NI02352 knob 24 11 5 11 29 NI02353 knob 24 11 5 11 30 N...

Page 30: ...ance 1 10W 0 1 0603 R366 R367 R464 R393 R394 79 RD00224 SMD precise resistor 1 10W 100K 1 0603 R356 R357 R395 R396 80 CI00059 SMD ceramic capacitor 0603 100PF 50V NPO 5 C251 C252 81 CI00075 SMD cerami...

Page 31: ...R206 R207 R208 R2 09 R210 R211 R212 R213 R214 R215 R216 R217 R218 R21 9 R220 R423 113 RD00347 SMD fixed resistor 1 10W 510 5 0603 R249 R388 R389 R414 114 RD00346 SMD fixed resistor 1 10W 56 5 0603 R39...

Page 32: ...amic capacitor 0603 0 0015uF 50V X7R 10 C345 C346 C347 152 CI00075 SMD ceramic capacitor 0603 0 1uF 50V Y5V 80 20 C333 C334 C336 C337 C338 C339 C340 C341 153 CL00002 SMD tantalum capacitor RS ACT 1 0u...

Page 33: ...250 X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 X11 X12 X13 X14 X15 X16 X1 7 X18 X19 X20 X21 X28 X29 X30 X31 X32 X33 X34 X35 X36 206 HC00505 connector male 16P 2 0mm 180 CN2 CN3 207 HC00256 connector male 5P 2 0m...

Page 34: ...R7 R8 R9 R10 241 SE00048 SMD Schottky barrier diode 1A 20V PRLL5817 SOD87 PHI D27 D28 242 RD00094 SMD fixed resistor 1 10W 5 1K 5 0603 R3 R4 R34 R35 R156 R157 R158 R159 R160 R161 R162 R1 63 R200 R201...

Page 35: ...00449 solder material without lead 9308 Sn Ag Cu 296 CI00075 SMD ceramic capacitor 0603 0 1uF 50V Y5V 80 20 C34 C30 C31 C32 C33 C35 297 RD00068 SMD fixed resistor 1 10W 100 5 0603 R18 R19 R20 R21 298...

Page 36: ...SG00147 SMD integrated circuit CHEF DSP GMCODE 105022 339 SG00037 SMD integrated circuit LD1117DT33C TO252 ST IC2 340 HC00611 IC socket SMD PLCC32 AMP S N 822516 7 IC4 341 SG00016 SMD integrated circu...

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