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Alto A400.4 Dragonfly, Service Manual

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Alto A400.4 Dragonfly Service Manual Download Page 14

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PCB:A4-400FP BOTTOM LAYER BOTTOM OVERLAY 

BOTTOM SOLDER

PCB:A4-400FP TOP LAYER TOP OVERLAY TOP SOLDER

PCB:A4-400IO BOTTOM LAYER  BOTTOM SOLDER

PCB:A4-400IO TOP LAYER TOP OVERLAY TOP SOLDER

PCB:PM8PWR BOTTOM LAYER   BOTTOM OVETLAY  BOTTOM SOLDER

PCB:PM8PWR TOP LAYER  TOP OVETLAY  TOP SOLDER

PCB:A4-400LED

BOTTOM 

LAYER

BOTTOM 

SOLDER

PCB:A4-400LED

TOP OVERLAY

Summary of Contents for A400.4 Dragonfly

Page 1: ...www altoproaudio com Version 1 0 MODEL A400 4 ...

Page 2: ...CONTENT 1 Introduction 1 2 Specification 2 3 Block Diagram 3 4 Schematic Diagram 4 5 Wiring Diagram 10 6 Printed Circuit Board 11 7 Exploded View Mechanical Parts List 13 8 Electrical Parts List 15 ...

Page 3: ...inet User controllable clip limiter 4 120Watts on 4 ohms EIAJ Balanced XLR inputs and 1 4 TRS jack to ensure noiseless long wiring 1 4 TS jack for sp output Front panel LED indicators for signal limit and clip Accurate gain control Independent thermal overload protection on each channel automatically protects amplifier and speakers Single channel over heat protection 1 ...

Page 4: ...knobs REAR Four LIMITER Switches for channel 1 channel 4 Indicators per channel Power On Green LED Clip Red LED Limit Yellow LED Signal Green LED Connectors of each channel Input COMBO connector Output 1 4 TS jack connector Power Supply 190 240 Vac 50Hz 95 120Vac 60Hz Dimension Net Weight 65W 120W at THD 1 3 8Kg 314mm x 208 5mm x 66 6mm Input Sensitivity 4 ohms 3dBu 62W 3W 2 ...

Page 5: ...1 2 3 4 A B C D 4 3 2 1 D C B A CH1 CH2 CH3 CH4 PRE AMP D100W AMP D100W AMP PM8PWR POWER SUPPLY A400 4 BLOCK DIAGRAM 3 3 Block Diagram ...

Page 6: ...1 2 3 CN6 CON3 1 2 3 CN7 CON3 1 2 3 CN8 CON3 1 2 3 4 CN9 CON4 1 2 3 4 CN10 CON4 1 2 3 SW1A SW PS 22E85L 4 5 6 P SW1B SW PS 22E85L 1 2 3 SW2A SW PS 22E85L 4 5 6 P SW2B SW PS 22E85L 1 2 3 SW3A SW PS 22E85L 4 5 6 P SW3B SW PS 22E85L 1 2 3 SW4A SW PS 22E85L 4 5 6 P SW4B SW PS 22E85L CH1 CH2 CH3 CH4 3c 5e 1a 4d 2b PJ1 PHONEJACK5 5 PIN 3c 5e 1a 4d 2b PJ2 PHONEJACK5 5 PIN 3c 5e 1a 4d 2b PJ3 PHONEJACK5 5 ...

Page 7: ...F 50 cer C24 22uF 50V GND C23 22uF 50V 3 2 1 U6A NJM4580L 5 6 7 U6B NJM4580L GND R39 10K GND R31 15K R34 10K R33 10K R32 15K 1 2 3 CN9 CON3 GND CH3 IN R36 17K4 4 1 2 3 U7 VTL C34 56pF 50 cer R42 10K GND CH4 GAIN C33 100pF 50 cer C44 47uF 25V C32 100pF 50 cer C26 22uF 50V GND C25 22uF 50V 3 2 1 U8A NJM4580L 5 6 7 U8B NJM4580L GND R43 10K GND R37 15K R38 10K R41 10K R40 15K 1 2 3 CN10 CON3 GND CH4 I...

Page 8: ...1 2 3 4 A B C D 4 3 2 1 D C B A LED1 RED LED3 GR LED2 YEL 1 2 3 4 5 CN1 CON5 LED4 RED LED6 GR LED5 YEL 1 2 3 4 5 CN2 CON5 6 ...

Page 9: ...100U 25V P1 P P3 P P2 P A2 A1 G Q1 BT139 M2 STW9NK90Z D12A 30CPQ150 D12B 30CPQ150 D9B 30CPQ150 D9A 30CPQ150 3 4 1 2 T1 PE67100 1 3 2 4 L1 TL25 050 182 R11 75R0 R12 150R R6 270R R5 270R R10 2K2 D4 1N4148 D5 GR 2 4 L4A LF20_13EED 9 11 L4B LF20_13EED 12 10 L4C LF20_13EED 13 15 L4D LF20_13EED 16 14 17 L4E LF20_13EED 2 3 4 5 7 8 10 12 13 14 15 17 1 T2 TF20_13EED 1 2 K1 CON2 1 2 K4 CON2 V27NY V27N V27NY...

Page 10: ... MKT C152 2N7 COG C21 470N MKT C50 0 01uF C61 470N C62 1N NPO C110 10N NPO C105 100U 35V LOW ESR C106 100U 35V LOW ESR R39 5R60 R40 5R60 R41 5R60 R42 5R60 R63 100R R64 100R R65 47R 1 4W R66 47R 1 4W L3 TWKC 22UH L4 TWKC 22UH L10 TWKC 22UH L11 TWKC 22UH 25 25 25 25 GND GND GND GND GND GND CASE TE6 GND 25C 25C C5 470N C6 0 1uF 100V C7 470N C45 220N C46 NOT USE C47 220N GND GND 25 25 C60 470N C55 0 1...

Page 11: ...PO C16 27N C17 470N C15 68N C14 27N VCC2 VCC2 VCC2 VCC1 COUNT 1 ILIM 2 VCC 3 OUT 4 PGND 5 VFWD 6 SLOPE 7 FEEDBK 8 ISET 9 RAMP 10 FREQ 11 VREF 12 GND 13 SOFTST 14 U1 UCC3571D C7 N C C8 270P_NPO VR1 20K C10 27N C11 470P_NPO C2 10U 50V C1 2 2U 35V D1 1N414BS D2 TMBYV10 40 D3 TMBYV10 40 D4 BAS85 C13 27N C12 470P_NPO 4 1 2 5 U3 OPTO CNY17 3T VFWD FFEDBK CURR CURR 10 OUT 1 2 3 4 5 6 7 8 9 10 J1 CON10 OU...

Page 12: ... 10 5 Wiring Diagram ...

Page 13: ... 11 PCB D100W 2 TOP LAYER TOPOVERLAY TOP SOLDER PCB D100W 2 BOTTOM LAYER BOTTOM SOLDER 6 Printed Circuit Board ...

Page 14: ...LAYER TOP OVERLAY TOP SOLDER PCB A4 400IO BOTTOM LAYER BOTTOM SOLDER PCB A4 400IO TOP LAYER TOP OVERLAY TOP SOLDER PCB PM8PWR BOTTOM LAYER BOTTOM OVETLAY BOTTOM SOLDER PCB PM8PWR TOP LAYER TOP OVETLAY TOP SOLDER PCB A4 400LED BOTTOM LAYER BOTTOM SOLDER PCB A4 400LED TOP OVERLAY ...

Page 15: ... 13 7 Exploded View ...

Page 16: ... 14 ...

Page 17: ...0477 cushion A500 2 up_V1 2 20 MJ00057 AL plate RS 3 0t 2000 1000mm 16 32kg 21 MJ00478 cushion A500 2 down_V1 1 22 MJ00479 cushion A500 2 down_V1 2 23 MJ00057 AL plate RS 3 0t 2000 1000mm 16 32kg 24 MI02593 front board A1000 4 right_V1 0 25 MI02594 front board A1000 4 right_V1 0 26 MI02959 front board 6 40 1M 1M 0 59kg A500 2_V1 0 27 MI03073 heat sink A400 4 31 8 90 210_V1 3 28 MJ00057 AL plate RS...

Page 18: ... 02 250 63 HA03495 wire 4P 4P 500mm UL1007 28AWG 64 HA01394 row wire connector wiring 3P 3P 120 65 HA03506 wire 3P 3P 500mm UL2547 28AWG 66 HA04172 wire 3P 3P 150mm UL2547 28AWG 67 HA04173 wire 3P 3P 250mm UL2547 28AWG blue 68 HA03498 wire 8P 280mm UL1007 18AWG 69 HA02763 wire 8P 200mm UL1007 18AWG 70 ND00150 silicone sleeve φ12 150mm 71 ND00026 silicone sleeve 100 20 72 NI00218 cable tie ALT 102S...

Page 19: ...ype R19 R20 R49 R50 104 RA00195 fixed resistor 1 4W 270Ω F type R15 R17 R45 R47 105 CB00029 electrolytic capacitor 22uF 35V φ5 11mm C1 C2 C3 C4 C23 C24 C25 C26 106 CB00039 electrolytic capacitor 47uF 25V φ5 11mm C9 C10 C29 C44 107 HC00077 connector male 3P 2 5mm 180 CN1 CN2 CN4 CN6 CN9 CN10 CN12 108 HC00078 connector male 4P 2 5mm 180 CN3 CN7 109 RC00209 potentiometer A10KΩ RV110 40E1 225A A14 VR1...

Page 20: ...X 1 0uF 275V VDE UL CSA CX2 143 CG00028 metal oxide varistors CNR 14D391K C1 144 CG00030 X1 Y2 capacitor 2200PF 400V Y5V 20 Y2CAP C2 C3 C38 C39 CY1 CY2 145 CG00033 metal oxide varistors B57237 S100 M R2 146 CN00150 common inductance TC2208 15mH V644 L1 147 CN00151 common inductance TC2208 20mH V645 L7 148 CH00027 laminated capacitor 0 1uF 100V X7R PH5mm C25 C41 C5 C48 C49 149 CH00028 laminated cap...

Page 21: ... sink 21 50 1M 5 1M 1 6KG _V1 0 186 MK00080 battery cover 0 4 10 12 35mm PM8 PWR_V1 1 Q1 D9 D12 R9 IC4 IC2 187 NI01877 silicone sleeve φ10 28mm T0 45mm 188 NI03044 silicone sleeve φ14 35 T0 45mm 189 MG00041 screw M3 6 190 MF00037 washer φ3 2 φ5 5 1t 191 MF00132 MIC jack φ3 φ8 0 8t_v1 0 192 MF00030 washer φ3 5 φ8 0 8t_V1 0 193 MJ00067 single light board 0 8t 2135 1220mm 18 69kg 194 MG00244 copper p...

Page 22: ...76 SMD precise resistor 1 8W 150Ω 1 0805 R7 229 RD00377 SMD precise resistor 1 8W 180Ω 1 0805 R14 R17 230 RD00378 SMD precise resistor 1 8W 1 00KΩ 1 0805 R19 R20 R3 R4 231 RD00380 SMD precise resistor 1 8W 10 0KΩ 1 0805 R8 R11 232 RD00383 SMD precise resistor 1 8W 27 0KΩ 1 0805 R9 R10 233 RD00403 SMD precise resistor 1 8W 100KΩ 1 0805 R23 234 RD00434 SMD precise resistor 1 8W 19 6KΩ 1 0805 R22 R6 ...

Page 23: ... capacitor 1206 0 01uF 50V NPO 5 C13 C1 C2 273 CI00136 SMD ceramic capacitor 1206 560PF 50V NPO 5 C28 C29 C30 C32 C33 C3 274 CI00138 SMD ceramic capacitor 1206 0 22uF 50V X7R 10 C34 C48 C49 C50 C56 275 RD00245 SMD precise resistor 1 4W 1 00KΩ 1 1206 R28 276 RD00249 SMD precise resistor 1 4W 5 60KΩ 1 1206 R2 R3 R26 R27 277 RD00417 SMD precise resistor 1 4W 27 0KΩ 1 1206 R31 278 RD00429 SMD precise ...

Page 24: ...CONNECT 500 2 303 HB01378 PCB A SERIES CONNECT PCB VER060112 304 AC00179 tin without lead M705E Sn 3Ag 0 5Cu 305 RA00111 fixed resistor 1 2W 51Ω M type 306 HC00076 connector male 2P 2 5mm 180 CN3 CN4 CN5 307 HC00077 connector male 3P 2 5mm 180 CN1 CN2 308 CB00064 electrolytic capacitor 470uF 16V φ10 12mm C1 309 MG00161 screw M3 6 310 MG00027 screw M3 12 311 HA03501 single terminal wiring 300mm UL1...

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