Alto OEX-400, Service Manual

Page 1: ...Service Manual www altoproaudio com Version 1 2 Model OEX 400 ...

Page 2: ...CONTENT 1 Introduction 1 2 Specification 2 3 Block Diagram 4 4 Schematic Diagram 5 5 Wiring Diagram 10 6 Printed Circuit Board 11 7 Exploded View Mechanical Parts List 14 8 Electrical Parts List 19 ...

Page 3: ...rm natural 2 band EQ for each channel Precision level control 24 bit DSP effects with powerful algorithms 16 presets Extremely high headroom offering excellent dynamic range Plastic reinforced cabinet polypropilene Two 10m speaker cables Two folding speaker Compartment for store following accessories 350W EIAJ of Power Folding speaker 2 10 Power cord 1 IEC power cord Customized Speaker Cable 2 10m...

Page 4: ...Mixer Section 2 Technical Specification 2 ...

Page 5: ...Speaker Section Physical Power Section 3 ...

Page 6: ...S X5 T R S MONITOR OUT PHONES OUT LEVEL DSP FX AUX1 POST X1 X2 X3 X1 3A XLR TRS 5 6 4 3 1 2 T R S X1 3B XLR TRS 1 2 3 X9 XLR LOW HI LEVEL DSP FX AUX1 POST 2 STAGE EQ LOW HI LEVEL DSP FX AUX1 POST BAL UNBAL CH INPUT CH4 5 BAL UNBAL CH6 7 STEREO INPUT STEREO UNBAL INPUT AUX RETURN LEVEL DFX DSP LOW BOOST 1 2 3 4 J13 CON4 POWER MODEII RMS 300W X14 T R S MASTER SPK OUT2 STEREO OUTPUT STEREO OUTPUT AUX...

Page 7: ...0K 1 3 2 VR6 B50K R9 3K9 1 3 2 VR7 W50K J2 PRE POST R95 20K 1 3 2 VR8 W50K R59 10K MAIN BUS FX SEND EQ HI 10KHZ LO C20 47u 25V 3 2 1 U6A 4580M R126 1M C103 22P R11 3K9 R110 8K2 R109 8K2 C89 4N7 M R111 8K2 C84 4N7 M C29 47u 25V 100HZ R61 10K C72 22P R56 10K C69 22P C17 47u 25V 3 2 1 U5A 4580M R58 10K R94 12K C71 22P 5 6 7 U5B 4580M C28 47u 25V R29 22K 5 6 7 U6B 4580M R134 36K C105 22P C30 47u 25V R...

Page 8: ...40 0 1u C141 0 1u R144 10 R145 10 R146 10 R147 10 VCC VCC VCC VCC 3 2 1 U12A 4580M R161 62K C109 22P C40 47u 25V R71 10K 5 6 7 U14B 4580M R36 22K C110 22P EFFECT IN 5 6 7 U12B 4580M R72 10K C113 22P C49 47u 25V MAIN BUS MAIN BUS 3 2 1 U13A 4580M R165 2K2 C112 22P DSP IN 8 4 U12C 4580M C142 0 1u C143 0 1u R65 18K R64 10K C41 47u 25V 4 5 2 3 1 X13 SCJ 0658 1 Y 4 5 2 3 1 X14 SCJ 0658 1 Y S T R 1 2 3 ...

Page 9: ... U15C 4580M 8 4 U16C 4580M 8 4 U17C 4580M C166 0 1u C167 0 1u C169 0 1u C168 0 1u C170 0 1u C172 0 1u C171 0 1u C173 0 1u 8 4 U18C 4580M C174 0 1u C175 0 1u R150 10 R151 10 VCC VCC 8 4 U20C 4580M C152 0 1u C153 0 1u VCC6 VCC6 R148 10 R149 10 VCC VCC 8 4 U19C 4580M C164 0 1u C165 0 1u 1 3 2 VR21 W50K MAIN IN EQ 1 2 3 4 J13 CON4 TO AMP IN 5 4 2 3 12 U21A LM339 7 6 1 U21B LM339 9 8 14 U21C LM339 11 1...

Page 10: ...CE 1 3 2 VR27A W100K R230 47K R231 47K R190 2K7 5 6 7 U25B 4580V R222 18K C206 10N R47 22K C207 10N MN EQ OOL 2 MN EQ OOL 1 2 5KHZ FREQUENCY BAND MN EQ SOURCE 1 3 2 VR28A W100K R48 22K R49 22K R233 1K 3 2 1 U26A 4580V R224 18K C211 1N R203 100K C210 1N MN EQ OOL 2 MN EQ OOL 1 6 3KHZ FREQUENCY BAND MN EQ SOURCE 1 3 2 VR29A W100K R204 100K R205 100K R235 3K3 5 6 7 U26B 4580V R220 18K C208 1N R208 27...

Page 11: ...220N R129 1M C222 100N FOOTSW C233 1uF 35V R90 10K R246 220R 5V C225 100N R89 10K 5V D7 1N4148 D9 1N4148 C224 100N R131 1M MUTE DSP IN 5 6 7 U28B LM393 R193 470R C223 100N R206 7 5K D6 1N4148 R245 820K D8 1N4148 R244 2M2 R130 1M R88 10K 3 2 1 U28A LM393 C232 1U 50V D18 RED R169 4K7 VCC VCC 5V 8 4 U27C 4580M 8 4 U28C 4580M C184 0 1u C185 0 1u C187 0 1u C186 0 1u VCC VCC 1 3 2 VR23 W50K 1 2 3 J14 CO...

Page 12: ...WERMODII POWER CONNECT DSP 313123 2 OEX 400_MIXER CN1 CN2 PIN1 PIN2 PIN1 PIN2 OPEN AC INPUT 230V PIN1 PIN2 SHORT AC INPUT 120V 26PIN CN1 CN11 26PIN CN500 CN501 J14 J12 CN1 CN2 J16 J6 J7 J10 J11 J9 J8 J15 J13 J13 PIN3 10 5 Wiring Diagram ...

Page 13: ... 11 6 Printed Circuit Board ...

Page 14: ... 12 ...

Page 15: ... 13 ...

Page 16: ... 14 7 Exploded Views Mechanical Parts List ...

Page 17: ... 15 ...

Page 18: ... FAS10 01 4 15 NI04014 button FAS10 02 4 16 MI03201 fixed bracket FAS10 03 4 17 MI03202 fixed bracket FAS10 04 4 18 MK00107 fixed bolt FAS10 05 4 19 MG00647 fixed shaft FAS10 06 4 20 MI03203 fixed bracket FAS10 07 4 21 MK00110 spring FAS10 08 4 22 HK06527 K PC board P OEX 400 POWER_CONNECT 1 23 MG00073 black plated screw pan head iron board M3 14 4 24 MF00038 spring washer Zn plated φ4 φ7 1t 1 25 ...

Page 19: ...ron board M4 16 10 50 MG00061 black plated screw pill iron board M3 10 26 51 MG00041 black plated screw pill M3 6 17 52 MG00160 Ni screw pill M3 6 1 53 MG00166 Ni screw pill M3 10 2 54 ME00015 Nut RS 3mm 2 55 NI04005 panel BOX OEX 400 01 1 56 NI04006 panel MIX OEX 400 02 1 57 NI04008 handle OEX 400 10 3 58 NI04011 speaker front panel OEX 400 135 336 2 342 63_V1 0 1 59 NI04010 speaker rear panel OE...

Page 20: ... 1 74 MI03187 ZB fixed bracket OEX 400 left_V1 0 1 75 MI03184 ZD fixed bracket OEX400 09 OEX 400 1 5t 93 28 20 right_V1 0 1 76 MI03185 ZD fixed bracket OEX400 08 OEX 400 1 5t 93 28 20 left_V1 0 1 77 NI04011 speaker panel OEX 400 135 336 2 342 63_V1 0 1 78 NI04009 speaker rear panel OEX 400 285 75 332 97 344 66 rear_V1 0 1 18 ...

Page 21: ...69 wire RS 3P 300mm UL1015 18AWG 19 HA04468 wire RS 2P 275mm UL1185 28AWG 20 HA00375 wire RS 100mm black L5R5 21 HA00401 wire 400mm black L5R5 22 HA01391 row wire connector wiring 3P 3P 200 23 HA00049 wire RS 54mm black L3R3 24 NI04005 panel RS OEX 400 350 22 153 355 8 1578g_V1 2 25 NI04006 panel OEX 400 350 05 156 25 355 75 1566g_V1 0 26 NI04008 handle OEX 400 155 5 39 94 23 49_V 1 1 27 NI04007 f...

Page 22: ... 5 62 MF00078 washer RS φ32 φ9 2t PAM 5_V1 2 63 MJ01154 single light board 2 0t 1850 950mm 27 6kg 64 HD00071 ceramic tube fuse 3 15A 250V φ5 2 20mm CSA S T UL VDE 65 ND00547 silicone sleeve φ4 150mm 66 ND00196 silicone sleeve φ4 1000mm 67 NI00261 sleeve φ5 20mm 68 NI00258 sleeve φ5 1000mm 69 MD00444 protective cover 80 80mm K G08A05 4HA 70 MG00031 screw M4 12 71 NI00218 cable tie ALT 102SB 72 NI04...

Page 23: ...chassis DigiMod 3 0t 51 122 216 ME000155 _V1 1 103 MJ00057 AL plate RS 3 0t 2000 1000mm 16 32kg 104 ME00220 iron pillar M4 8 0 7PH_V1 0 105 ME00221 iron pillar M3 4 0 8PH_V1 0 106 MK00115 spring RS 1 0T 7 6 13 34 2 ML00004 _V 1 3 ML1 ML2 107 SB00224 transistor RS CT IRFI640GPBF TO220 IR Q10 108 SB00225 transistor RS CT IRFI9640GPBF TO220 IR Q13 109 SB00055 transistor RS ACT IRFP240 TO 247AC IR Q15...

Page 24: ...25 D15 D24 D19 D4 D22 D2 3 138 SE00026 SMD diode RS ACT 0 45A 85V BAV70 D18 D20 139 SE00089 SMD zener diode RS 1 2W 5 1V MMSZ5231B SOD 123 PANJIT D27 D26 D28 D10 140 SE00092 SMD zener diode RS 1 2W 9 1V MMSZ5239B SOD 123 PANJIT D36 D35 141 SE00094 SMD zener diode RS 1 2W 15V MMSZ5245B SOD 123 PANJIT D29 D31 142 SE00093 SMD zener diode RS 1 2W 10V MMSZ5240B SOD 123 PANJIT D32 D30 143 SE00091 SMD ze...

Page 25: ...60 168 RD00594 SMD precise resistor RS 1 4W 2 70KΩ 1 1206 R116 R24 R117 R23 169 RD00615 SMD precise resistor RS 1 8W 1 50Ω 5 0805 R26 R25 170 SF00029 SMD transistor RS ACT BC807 SOT23 PHI Q5 Q3 Q6 Q4 171 SF00030 SMD transistor RS ACT BC817 SOT23 PHI Q9 Q7 172 AE00449 solder material without lead 9308 Sn Ag Cu 173 SE00097 SMD diode RS CT 1A 400V US1G DO214AC VISHAY D3 174 SF00103 voltage stabilized...

Page 26: ...09 CG00052 X1 Y2 capacitor AY2 4700PF VDE UL 20 X1 400V Y2 250V C8 C9 C6 C7 210 CF00262 metal film capacitor RS 0 068uF 630V 5 PB683J2JD3H150D C5 C4 211 CF00261 metal film capacitor RS 0 1uF 100V 5 AC104J2AC1H120D C62 C64 C40 C41 212 NI03205 protective cover 0 5 44 15_V1 0 213 HI00120 slide switch L21 22A 214 HI00031 power switch RS R415KKETOF 215 MG00451 screw M3 6 0 5PH 216 MI03759 fixed bracket...

Page 27: ...02319 signle terminal wiring 600mm UL1015 18AWG brown black 252 HA02320 signle terminal wiring 800mm UL1015 18AWG 253 HK06258 PC board RS P OEX400_XOVER 254 RA00998 chassis bracket 20W 1 5Ω SQY type R1 255 RG00012 over current protector 0 5A 60V MF R050 PTC 256 NI00218 cable tie ALT 102SB 257 HB01915 PCB RS OEX400_VER060421 258 HC00324 connect terminal 6 5m m PC250 LOW LOW IN IN HIGH HIGH 259 CN00...

Page 28: ...294 HK06936 speaker module OEX400 after 295 NI04011 speaker panel RS OEX 400 135 336 2 342 63 590g 15G_V1 1 296 MI04169 fixed bracket RS OEX 400_V1 0 297 AE00055 solvent solvent 298 AE00239 paint RS 5252 black 299 MI04168 fixed bracket RS OEX 400 1 0t 11 5 66 2 12 2_V1 2 300 MJ00061 iron board 1 2135 1220 20 45kg 301 NI04819 panel RS CT OEX 400 135 336 2 342 63_V1 0 302 NI04009 speaker rear cover ...

Page 29: ... RS BSV 2L ψ50 5 29 5 25Ω 12 9mm_V1 0 336 NH00392 cone RS φ245 φ51 2 53_V1 0 337 NI04048 high pitch horn 80 58 4 black_V1 0 338 NE16265 gift carton HK06401_V1 0 339 NI00014 membrane 0 035 1M 340 NH00012 bond paper 0 04 1M 341 NH00461 cushion RS φ210 11 6 8hole 342 HG00213 Driver RS PA D588NH 8Ω 15W 343 MG00675 screw RS M4 15mm_V1 0 344 NI04207 O shape loop OEX 400 φ1 5 1105_V1 1 345 NI04222 label ...

Page 30: ...X400 1 5t φ28 45 8 left_V1 2 378 MJ00088 single light board 1 5 2135 1220 30 67kg 379 MF00021 washer φ8 φ23 2t 380 MG00079 color screw RS M4 16 0 7PH 381 NA00137 clip chain bag 5 7 382 NA00192 bag RS 0 03t 1200 800mm 12 383 NA00279 clip chain bag 0 04t 100 150mm_V1 0 384 NB04661 carboard RS T OEX 400 410 410mm_V1 0 385 NB04663 paper defend horn RS T OEX 400 425 48mm_V1 1 386 NB04664 carboard RS T ...

Page 31: ... V C wire 160 red 7 0 12 426 MF00033 washer φ14 φ21 15 1 75t 427 MH00030 magnet combination RS ψ13 ψ12 8 2 N 35 _V1 0 428 MH01618 iron φ13 1 8 429 MH01617 magnet RS φ12 3 N35_V1 0 430 MH02026 iron S 80B φ13 8 2_V1 0 431 MH00070 iron coil φ16 6xH10 4x12 6 4 432 NI00488 cushion φ30 22 5B S 81 433 ND00010 wool sheet φ18 4H 434 ND00020 dustproof cloth φ24 2016 435 NH00049 ventilation paper 86 18 5 3 4...

Page 32: ...C9 465 NE04154 label OEX600_V1 0 466 NH00035 bond paper 0 06 1M 467 NI00017 membrane 0 055 1M 468 AC00179 tin without lead RS M705E Sn 3Ag 0 5Cu 469 CB00166 electrolytic capacitor 100uF 16V φ6 5mm C19 C12 C5 C2 C24 C16 C21 C25 C26 C28 C7 470 HK06477 PC board P OEX 400 MIX DIP 471 HC00126 balance MIC jack RS JY 5042 030G female plug 180 X9 472 RA00221 fixed resistor 1 4W 2 2KΩ F type R243 473 RA006...

Page 33: ...7 HI00317 rotary switch RE2001 40E2 155F 4B SW1 508 MF00037 washer φ3 2 φ5 5 1t 509 MG00162 screw M3 8 510 NI02249 plastic washer TW 1 TO 220 U32 U33 U34 511 RC00678 potentiometer RS B50KΩ RD09F113A231 50K2BT SAS VR1 VR2 VR5 VR6 VR9 VR10 VR13 VR14 VR17 VR18 512 HK06479 PC board P OEX 400 MIX SMD 513 RD00061 SMD fixed resistor 1 10W 10Ω 5 0603 R138 R139 R140 R141 R142 R143 R144 R145 R146 R147 R236 ...

Page 34: ... C184 C185 C186 C187 C217 C218 C219 C220 C221 C222 C223 C224 C225 536 CI00129 SMD ceramic capacitor 0603 0 0015uF 50V X7R 10 C196 537 CI00179 SMD ceramic capacitor 0603 0 22uF 25V X7R 10 C1608X7R1E224KT TDK C199 C200 C201 C202 C203 538 CI00185 SMD ceramic capacitor 0603 0 1uF 50V X7R 10 C1608X7R1H104KT TDK C238 539 SF00052 transistor RS ACT MMBFJ176 SOT23 FAIRCHILD TR1 540 SF00004 SMD transistor R...

Page 35: ...4 D1 D2 D3 D4 D5 D6 D7 D8 D 9 D19 D20 D21 D22 D28 D29 562 SG00032 SMD integrated circuit LM339DR SO14 TI ST U21 U22 563 SG00068 SMD integrated circuit 74HC14DT SO14 PHI U31 564 SG00558 integrated circuit RS UTC4580M 4580M SOP8 YW U1 U2 U3 U4 U5 U6 U7 U8 U 9 U10 U11 U12 U13 U14 U15 U16 U17 U20 U23 U24 U25 U26 U27 565 SG00469 SMD integrated circuit RS SN74HC109DR SO16 TI U29 566 AE00449 solder mater...

Page 36: ...citor 220uF 35V φ10 12mm C231 C216 589 RA01129 precise resistor 1 4W 1 1KΩ 1 R240 R241 590 HB01969 PCB RS OEX 400 MIX_VER060930 591 MA05828 panel OEX 400 ALTO_V1 0 592 MA05656 panel OEX 400 593 AE00055 solvent solvent 594 AE00228 paint RS 5204 595 MA05655 panel OEX 400 _V1 0 596 ME00113 iron pillar M3 13 8 0 5PH_V1 1 597 ME00165 iron pillar M3 21 0 5PH_V1 0 598 MJ00058 single light board 1 2135 12...

Page 37: ...617 NI02677 knob cover φ8 5 4 534C blue 618 NI02867 knob cover φ7 3 5 221U_V1 0 619 NF02775 user manual RS OEX400 ALTO_V1 0 620 NH00149 paper 889 640mm 621 NA00671 silk wadding RS CT OEX 400_V1 0 35 ...