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Alto DPA 2500 Service Manual
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Alto DPA 2500 Service Manual

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MODEL: PS 4LA
MODEL:DPA 2500/4000
www.altoproaudio.com
Version 2.0

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Summary of Contents for Alto DPA 2500

  • Page 1 MODEL: PS 4LA MODEL:DPA 2500/4000 www.altoproaudio.com Version 2.0...

  • Page 2: Table Of Contents

    CONTENTS 1. Introduction…………………………………………………………….2 2. Specification…………………………………………………………..3 3. Schematic Diagram……………………………………………………4 4. Wiring Diagram………………………………………………………..17 5. PCB Layout…………………………………………………………….19 6. Test Procedure & Test Result………………………………………25 7. Exploded Views & Mechanical Part List………………………….30 8. BOM…………………..…………………………………………………33...

  • Page 3: Introduction

    1. Introduction ALTO MISTRAL amplifiers are series of innovative design power amplifiers. This series work under high stability with great power supply in just 2-rack spaces. Air flow is from back to front panel to keep in a nice air circulation inside the Rack. The automatic fan, which affects machines’...

  • Page 4: Specification

    2. Specification Output power DPA2500 DPA 4000 20Hz-20KHz @0.1% THD, SCD MODE 8Ohms per channel(EIAJ) 450W 625W 4Ohms per channel (EIAJ) 700W 1000W Bridge MONO mode 8Ohms ,1KHz, 0.1% THD 1400W 2000W Distortion (SMPTE-IM) <0.05% Frequency response 20Hz-20KHz=/-0.1dB, -3dB points:10Hz-60Hz Damping factor ,1 kHz and below >300 at 8 Ohms Signal to noise ,20Hz`20KHz...

  • Page 5: Schematic Diagram

    MIS25-CH2.SCH RECTIFIER BRIDGE1- 16AT JP1_8 R1_2 6.3x32 FUSE HOLDER -V_FAN_CH1 CN-PCB6.3 150R R1_1 RELAY POWER1 VAC FAN2-CH1 AC INPUT Titel ALTO MISTRAL2500-CH1 DRIVE PCB# MIS4000.PCB Size Model No: Revision MISTRAL2500 VER031212 9-Apr-2004 Date: Sheet 1 of File: MIS25-CH1.Sch Drawn By:...
  • Page 6 -83V_B RECTIFIER BRIDGE2- 16AT JP2_8 R2_2 6.3x32 FUSE HOLDER -V_FAN_CH2 150R CN-PCB6.3 R2_1 RELAY POWER2 VAC FAN2 AC INPUT Titel ALTO MISTRAL2500-CH2 DRIVE PCB# MIS4000.PCB Size Model No: Revision MISTRAL2500 VER031212 Date: 9-Apr-2004 Sheet 1 of File: MIS25-CH2.Sch Drawn By:...
  • Page 7 -83V_A RECTIFIER BRIDGE1- 10AT JP1_8 R1_2 6.3x32 FUSE HOLDER -V_FAN_CH1 150R CN-PCB6.3 R1_1 RELAY POWER1 VAC FAN2-CH1 AC INPUT Titel ALTO MISTRAL4000-CH1 DRIVE PCB# MIS4000.PCB Size Model No: Revision MISTRAL4000 VER031212 Date: 9-Apr-2004 Sheet 1 of File: MIS40-CH1.Sch Drawn By:...
  • Page 8 -83V_B RECTIFIER BRIDGE2- 10AT JP2_8 R2_2 6.3x32 FUSE HOLDER -V_FAN_CH2 150R CN-PCB6.3 R2_1 RELAY POWER2 VAC FAN2 AC INPUT Titel ALTO MISTRAL4000-CH2 DRIVE PCB# MIS4000.PCB Size Model No: Revision MISTRAL4000 VER031212 Date: 9-Apr-2004 Sheet 1 of File: MIS40-CH2.Sch Drawn By:...

  • Page 18: Wiring Diagram

    4. Wiring Diagram DPA2500/4000 Chassis Wiring Drawing (100V-130V) GND2 OUT2 GND1 OUT1 GRAY HA01258 WHITE HA02471 HA01333 HA01239 WHITE GRAY HA01237 R1_5 R2_5 BLUE BLACK HA01198 JP1_1 JP2_1 (CH1_OUT) (CH2_OUT) JP1_2 JP2_2 (GND1) (GND2) JP1_13 JP2_13 HA01244 JP1_14 JP2_14 PURPLE BLACK JP1_7 JP2_7...
  • Page 19 DPA2500/4000 Chassis Wiring Drawing (210V-240V) GND2 OUT2 GND1 OUT1 GRAY HA01258 WHITE HA02471 HA01333 HA01239 WHITE GRAY HA01237 R1_5 R2_5 BLUE BLACK HA01198 JP1_1 JP2_1 (CH1_OUT) (CH2_OUT) JP1_2 JP2_2 (GND1) (GND2) JP1_13 JP2_13 HA01244 JP1_14 JP2_14 PURPLE BLACK JP1_7 JP2_7 HA02449 HA02488 GREEN...

  • Page 20: Pcb Layout

    5. PCB Layout MIS40 FP2 Top overlay Bottom layer MIS 40 PWR Bottom layer Top overlay...
  • Page 21 MIS 40 SP Top layer Top overlay Bottom layer...
  • Page 22 PCB: MIS 40 MN-CH1 To p overlay Top layer...
  • Page 23 Bottom layer PCB: MIS 40 MN-CH2 Top Overlay...
  • Page 24 Top layer Bottom layer...
  • Page 25 PCB: DPA-DIS-1 Bottom layer Top overlay PCB: DPA-RS Bottom layer Top layer PCB: DPA-DIS-2 Top layer Top overlay Bottom layer...
  • Page 26 PCB: DAP-PWR Top overlay Top layer Bottom layer...

  • Page 27: Test Procedure & Test Result

    6. Test Procedure & Test Result DPA2500/4000 TEST PROCEDURE DSP Test Instruments 1. DMM 2. Audio Analyze unit (VP-7724) 3. Oscillograph 4. PC with RS232 port Test Procedure Step1: Visual check Visually check if the cosmetic of the amplifier and assembly are OK. Step 2: Power supply test Rated power Make sure all the voltage values are correct, then turn off power.
  • Page 28 1. If the panel shows”56”, the Connection is ok. 2. Done. PCB Test Instruments 1. DMM 2. Audio Analyzer unit 3. Oscillograph 4. 8Ω(400W) load 1) Test procedures and specification 1.Set LIMITER and BRIDGE switches in the position OFF. Turn VR of CH1 and CH2 to maximum, then turn on the power switch and the blue power LED lights up, and OPERATING/PROTECTION LED shows red, then it turns green after 2-5 seconds or so.
  • Page 29 more than about 110V, the distortion is less than 1%. (This measurement shall be done in a minute). j. Turn off the input signal, the power consumption shall be less than 80W. k. Done.
  • Page 30 5. Test result SEKAKU ELECTRON INDUSTRY CO., LTD. Model No DPA2500 (Amplifier) USER OF VP-7724A Test Test Item Test Conditions Spec Remark Result Power Source 115/120/230/240V TP1_3(CH1)/T Motionless State R1-16(CH1)/R2- Load 4Ω P2_3(CH2):13 Current 16(CH2) 8±2mV Power Rated Output. Input VR MAX(CLIP ON) Consumption at 1KHz,6dBV...
  • Page 31 SEKAKU ELECTRON INDUSTRY CO., LTD. Test Result Model No DPA4000 (Amplifier) USER OF ATS-1 Tester: Test Date: 2004 , 11 , 06 Test Item Test Conditions Spec Test Result Remark AC:229~243 Load 4Ω Power Source 230V 115/120/230/240V 135mv TP1-3 Motionless Load 4Ω...

  • Page 32: Exploded Views & Mechanical Part List

    7. Exploded Views & Mechanical Part List...
  • Page 33 DPA2500 Part No. descriptions Specification MA04096 panel MISTRAL4000 MA04165 panel MISTRAL2500 ALTO MB03071 chassis MISTRAL2500 MC00559 DPA1500 MI01744 Handle MISTRAL4000 20*25.5*80 MI01900 Fixed DPA1500-05 DPA1500 1.0t* 112*81*15mm MI01746 Rear board MISTRAL4000 14*81*89 MJ01227 cushion MISTRAL2500 MI02025 Fixed panel MISTRAL900(left )
  • Page 34 DPA4000 Part No. descriptions Specification MA04096 panel MISTRAL4000 MA04165 panel MISTRAL4000 ALTO MB03071 chassis MISTRAL4000 MC00559 DPA1500 MI01744 Handle MISTRAL4000 20*25.5*80 MI01900 Fixed DPA1500-05 DPA1500 1.0t* 112*81*15mm MI01746 Rear board MISTRAL4000 14*81*89 MJ01227 cushion MISTRAL2500 MI02025 Fixed panel MISTRAL900(left )

  • Page 35: Bom

    8. BOM DPA2500 part list Part No. Descriptions Specification Remark MA04096 panel MISTRAL4000 MA04097 panel MISTRAL4000 MA04098 panel MISTRAL4000 3.1*88.8*25.5*483 MI01309 panel 3.1*88.8*25.5*483 MA04398 panel DPA2500 ALTO_V1.0 MA04395 panel DPA4000 MA04396 panel DPA4000 1.5t*22.4*81.4*422 MJ00088 single light board 1.5*2135*1220 30.67kg MB02959 rear board DPA4000_V1.0...
  • Page 36 Part No. Descriptions Specification Remark NI02650 knob φ18*18mm 10*φ22.5 NI02651 knob fix sheath HC00005 AC socket AC-008 HI00031 power switch R415KKETOF SA00013 bridge rectifier 35A/200V HA01243 wire 300mm UL1015 14AWG brown HA01333 150mm UL1015 18AWG green/yellow single terminal wiring CF:W76 HA01247 single terminal wiring 180mm UL1015 14AWG blue...
  • Page 37 NF00061 assurance card ALTO NE12198 label DPA2500 NH00012 bond paper 0.04*1M NI00014 membrane 0.035*1M NE11347 label ALTO PI 100 NH00334 cone paper 0.040*1m 101 NC00059 fixed board 1*46*46(Sax-2000) 102 NC00175 insulator 1.0t*51mm*100M 103 HK04155 PC board P-MIS40MN CH2(MISTRAL2500) 104 HB01395 MIS60MNCH2_VER050203 820Ω...
  • Page 38 Part No. Descriptions Specification Remark 1.0KΩ RSS P type 127 RA00062 metal-oxide-film resistor 3W R2_63 R2_28,R2_29,R2_30,R2_31, 0.22Ω SQM type 128 RA00880 cement resistor 5W R2_33,R2_34,R2_36,R2-35 12Ω SQM type 129 RA00870 cement resistor 5W R2_41,R2_40 1KΩ SQM type 130 RA00869 cement resistor 5W R2_23,R2_24 3.3KΩ...
  • Page 39 Part No. Descriptions Specification Remark 2uH 10A(CSAF-302824)(φ1.5mm*12 169 CN00060 fixed inductance L2_1 1/2T) 500Ω(TDC5C150L) 170 RH00021 thermistor R2_3 50Ω(TDC05A050J) 171 RH00017 thermistor R2_17 100Ω(PAS7101ZF) 172 RH00025 thermistor R2_50 B100Ω PT1030-V1B101-C1-H10 173 RC00319 semi-fixed resistor R2_16 B1KΩ PT1030-V1B102-C1-H10 174 RC00348 semi-fixed resistor R2_20,R2_21 175 HI00211 rarely...
  • Page 40 Part No. Descriptions Specification Remark AC00002 solder wire 63/37% 212 HK03958 PC board P-MIS40PWR 213 HB00946 MIS40PWR_VER030710 214 HC00324 terminal 6.5m/m (PC250) P1,P2,P3,P4,P5,P6,P7,P8 215 CG00044 metal oxide varsities NP35L-Y2 K2-2 216 AC00002 solder wire 63/37% 217 HK03959 PC board P-MIS40FP2 218 HB00947 MIS40FP2_VER030710 φ3 (LEG2062)
  • Page 41 Part No. Descriptions Specification Remark 253 SD00019 integrated circuit MAX202ECPE 254 HA02503 wire 9P-10P 50mm UL2651 28AWG PH1.27mm 255 HC00048 row-wire header 8PIN A28b-8B.T.6 256 HC00111 balance MIC jack 99M-108SP1 257 HC00112 balance MIC jack 99M-107SP-1-2 90° PUSH 258 AC00002 solder wire 63/37% 259 HK03846...
  • Page 42 Part No. Descriptions Specification Remark 295 HC00050 row-wire header 14PIN A28b-14B.T.6 J5,J4 296 NC00005 silicone insulator TO-220 square type 297 NI00863 insulate bean TO220B 298 MG00270 screw M3*10 299 MI01820 fixed bracket DPA4000 2.5t*42.5*83.8*102.5 300 MJ00093 AL plate 2.5*2000*1000 13.6kg 301 MG00252 copper pole M3*6.2*0.5PHsingle,length12...
  • Page 43 24LC64I/SN 355 SG00184 SMD integrated circuit EN29F040A-70JC/DPA 356 SG00217 SMD integrated circuit EN29F040A-70JC(PL032)/(E-ON) 357 SG00335 SMD integrated circuit TY-1 ALTO(LEM NO#105008)_V1.1 358 SG00128 SMD integrated circuit RED 208(LEM NO#105008) 359 SG00069 SMD integrated circuit MAX709L-CSA 360 CO00006 SMD chip inductance...
  • Page 44 Part No. Descriptions Specification Remark SMD fixed resistor 1/10W 4.7KΩ ±5% 0603 373 RD00093 R1,R13,R4,R6 SMD fixed resistor 1/10W 10KΩ ±5% 0603 374 RD00101 R25,R26 375 SG00054 SMD integrated circuit AK4393VF AKM 376 SG00061 SMD integrated circuit AK5383VS AKM 377 SG00040 SMD integrated circuit MC33078DT(ST)MC33078D(ON) IC3,IC4,IC5,IC6...
  • Page 45 Part No. Descriptions Specification Remark 82KΩ P type 416 RA00909 fixed resistor 1/2W R1_56 10KΩ 8P C Type 417 RB00010 resistor networks 1/8W RB1_1 5.6Ω P type 418 RA00027 R1_22,R1_62 metal-oxide-film resistor 1W 22Ω P type 419 RA00007 R1_25,R1_32 metal-oxide-film resistor 1W 6.8KΩ...
  • Page 46 Part No. Descriptions Specification Remark 458 SB00044 transistor MJE15033 Q1_2 459 SB00130 transistor MPSA42/(PHILIPS) Q1_17 460 SB00129 transistor MPSA92(TO92)/(PHI) Q1_15,Q1_16 461 SB00023 power transistor 2SA1943-O Q1_6,Q1_7,Q1_8,Q1_5 462 SB00021 power transistor 2SC5200 Q1_10,Q1_11,Q1_12,Q1_9 463 SD00032 integrated circuit LM317T U1_4 464 SD00173 integrated circuit NJM4580L(JRC) U1_1,U1_2...
  • Page 47 Part No. Descriptions Specification Remark 501 NC00041 red foil white board 1.6t*0.65M*70M 502 MI01954 fixed bracket MISTRAL4000 1.5t*136*16mm right 503 MJ00069 iron board 1.5*2135*1220 30.67kg 504 HA02759 wire 5P-5P 120mm UL1007 24AWG 505 CA00088 ceramic capacitor 100PF/1000V Q1-1,Q1-2 506 MI02324 heat-sink 9*83*70*309 left_V1.0 507 MI02359...
  • Page 48 DPA4000 part list No. Part No. Descriptions Specification Remark MA04096 panel MISTRAL4000 MA04097 panel MISTRAL4000 MA04098 panel MISTRAL4000 3.1*88.8*25.5*483 MI01309 panel 3.1*88.8*25.5*483 MA04394 panel DPA4000 ALTO_V1.0 MA04395 panel DPA4000 MA04396 panel DPA4000 1.5t*22.4*81.4*422 MJ00088 single light board 1.5*2135*1220 30.67kg MB02959 rear board DPA4000_V1.0 10 MB02960 rear board DPA4000_V1.2...
  • Page 49 No. Part No. Descriptions Specification Remark 42 HC00005 AC socket AC-008 43 HI00031 power switch R415KKETOF 44 SA00200 bridge rectifier 40A/400V BP40-04 45 HA01243 wire 300mm UL1015 14AWG brown single terminal wiring 46 HA01333 150mm UL1015 18AWG green/yellow CF:W76 47 HA01247 single terminal wiring 180mm UL1015 14AWG blue 48 HA02469...
  • Page 50 93 NE12928 label DPA4000_V1.0 94 NH00012 bond paper 0.04*1M 95 NI00014 membrane 0.035*1M 96 NE11347 label ALTO PI 97 NH00334 cone paper 0.040*1m 98 NC00059 fixed board 1*46*46(Sax-2000) 99 NC00175 insulator 1.0t*51mm*100M 100 HI00141 manual reposition switch A0701HM-10A 101 HA01241...
  • Page 51 No. Part No. Descriptions Specification Remark 0.0Ω M type 127 RA00158 fixed resistor 1/4W R2_2 15KΩ M type 128 RA00246 fixed resistor 1/4W R2_11 1.8KΩ M type 129 RA00219 fixed resistor 1/4W R2_1 100KΩ M type 130 RA00282 fixed resistor 1/4W R2_43,R2_46,R2_51 100Ω...
  • Page 52 No. Part No. Descriptions Specification Remark 168 SA00187 rectifier diode IN5404 D2_15,D2_16 169 SA00002 high speed diode 1A/600V 1N4937 D2_5,D2_6 170 SA00107 zener diode 1W 15V 1N4744 D2_1,D2_4 171 SA00197 zener diode 1W 36V 1N4753 D2_21 172 SA00117 zener diode 1/2W 5.6V 6B1 D2_7,D2_8 173 SA00188...
  • Page 53 No. Part No. Descriptions Specification Remark 210 MJ01201 spacer MISTRAL4000 14.5*30.5*2t 211 MJ01154 single light board 2.0t*1850*950mm 27.6kg 212 MF00030 washer φ3*φ8*0.8t 213 MF00037 washer φ3*φ5*1t 214 NC00005 silicone insulator TO-220 square type 215 MG00171 screw M3*14 216 ND00182 silicone sleeve φ1*30mm 217 ND00171 silicone sleeve φ1*1000mm...
  • Page 54 No. Part No. Descriptions Specification Remark 68KΩ P type 253 RA00908 fixed resistor 1/2W R1_58 82KΩ P type 254 RA00909 fixed resistor 1/2W R1_56 10KΩ 8P C Type 255 RB00010 resistor networks 1/8W RB1_1 metal-oxide-film resistor 1W 5.6Ω P type 256 RA00027 R1_22,R1_62 metal-oxide-film resistor 1W 22Ω...
  • Page 55 No. Part No. Descriptions Specification Remark 293 SA00188 zener diode 1/2W 7.5V D1_18 φ5 circle red B1115 294 SA00026 L.E.D D1_17 295 SB00042 transistor MJE15032 Q1_1 296 SB00044 transistor MJE15033 Q1_2 297 SB00130 transistor MPSA42/(PHILIPS) Q1_17 298 SB00129 transistor MPSA92(TO92)/(PHI) Q1_15,Q1_16 Q1_6,Q1_7,Q1_8,Q1_5, 299 SB00023...
  • Page 56 No. Part No. Descriptions Specification Remark 335 NI00278 sleeve φ15*1000mm 336 NC00005 silicone insulator TO-220 square type 337 MG00171 screw M3*14 338 ND00182 silicone sleeve φ1*30mm 339 ND00171 silicone sleeve φ1*1000mm 340 NC00181 insulator MISTRAL4000 1.6t*136*16mm 341 NC00041 red foil white board 1.6t*0.65M*70M 342 MI01954 fixed bracket...
  • Page 57 No. Part No. Descriptions Specification Remark 10uF/16V φ4*7mm 378 CB00024 electrolytic capacitor C1,C3,C10,C11 1000uF/25V φ10*20mm 379 CB00072 electrolytic capacitor C9,C8 380 SD00074 integrated circuit L7805CV(TO-220)(ST) 381 SD00169 integrated circuit L7905CV(TO-220)(ST) 382 HC00066 row-wire header 3P 2.5mm 90° 383 HC00560 row pin (single)#2200 2.54 180°...
  • Page 58 No. Part No. Descriptions Specification Remark 419 HB01070 DPA-DIS-2_VER030916 420 HH00005 seven paragraph monitor LSD3561-10 DL2,DL3 421 HC00435 row pin (single)#1100 2.54 180° 5P6/11.6mm CN3,CN4 φ3 orange, green BOG303b 422 SA00051 L.E.D DL11 DL1,DL4,DL5,DL6,DL7,DL8, φ3 red LI2340/A 423 SA00072 L.E.D DL9,DL10 424 SB00072 transistor...
  • Page 59 24LC64I/SN 491 SG00184 SMD integrated circuit EN29F040A-70JC/DPA 492 SG00217 SMD integrated circuit EN29F040A-70JC(PL032)/(E-ON) 493 SG00335 SMD integrated circuit TY-1 ALTO(LEM NO#105008)_V1.1 494 SG00128 SMD integrated circuit RED 208(LEM NO#105008) 495 SG00069 SMD integrated circuit MAX709L-CSA 496 CO00006 SMD chip inductance...
  • Page 60 No. Part No. Descriptions Specification Remark 680PF/50V NPO ±5﹪ 501 CI00064 C32,C33,C43,C45 SMD ceramic capacitor 0603 502 CI00067 0.0022uF/50V X7R ±10% C31,C46 SMD ceramic capacitor 0603 503 CI00071 0.01uF/50V X7R ±10% C15,C19 SMD ceramic capacitor 0603 C18,C25,C3,C34,C35,C36, 504 CI00075 0.1uF/50V Y5V +80,-20% SMD ceramic capacitor 0603 C37,C38,C39,C4,C41,C42, C7,C8,C9...

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Dpa 4000