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Harman Infinity M704a Service Manual
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Harman Infinity M704a Service Manual

Marine amplifier
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M704a
High-performance 4-channel marine amplifier
Marine Amplifier
17
22
23
24
Ver. 1.1
06/2019

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Summary of Contents for Harman Infinity M704a

  • Page 1 M704a Marine Amplifier High-performance 4-channel marine amplifier Ver. 1.1 06/2019...

  • Page 2: Important Safety Instructions

    Contact your local waste management officials for information NOTE: Changes or modifications not expressly approved regarding the environmentally sound collection, recycling and by Harman could void the user’s authority to operate the disposal of used batteries. equipment. To remove the batteries from your equipment or remote...
  • Page 3 Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor "chip" components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity. 1.

  • Page 4: Safety Precautions

    SAFETY PRECAUTIONS The following check should be performed for the continued protection of the customer and service technician. LEAKAGE CURRENT CHECK Measure leakage current to a known earth ground (water pipe, conduit, etc.) by connecting a leakage current tester between the earth ground and all exposed metal parts of the appliance (input/output terminals, screwheads, metal overlays, control shaft, etc.).
  • Page 5 MARINE MARINE M704a M4555a M704a M704a M4555a M4555a...
  • Page 6 MARINE MARINE MARINE stereos. MARINE...

  • Page 7: Power Supply

    M704A AMPLIFIER Block Diagram Controls Input selector LP/HP PASS Crossover Class H GAIN INPUT 32Hz 320Hz 30kHz LW/HI input min-max Phase Power Amplifier 2Υ/4Υ 32Hz-320Hz 12dB/oct FULL AGND Controls Input selector LP/HP PASS Crossover Class H GAIN INPUT 32Hz 320Hz 30kHz LW/HI input min-max...
  • Page 8 C69P +15V P+12V R59P +BATT R54P R55P P+12V 220K D1PA D1PB D1PC D1PD D1PE R56P 2.5mH U5PB TP19P C6PA R58P +15V 224/50V 104/50V 103/50V 104/50V 6A10 3300u/25V 3300u/25V Q15P 4560 U5PA R59PA TP6P -AMP C1815 4560 -AMP +15V 4R7/1W 4.7R Q16P 2SD669 R53P...
  • Page 9 +VCCH +VCCH R64P +VCCH +32V SPK_P R67P R62P R60P D24P D23P C90P 106/25V C92P U6PA U6PB Q20P R66P AGND 4560 4560 R69P C94P C70P 100R +VCCL 104/50V R65P TSD4905S 100K R63P R61P 1.5K +17V C71P +VCCL 683/50V D20P +VCCL +VCC SK34 D28P D33P...
  • Page 10 120203000085 HS-R- R12A HS-R+ 2.5KZ HS-L+ 106/16V R13A Halosonic INPUT 4580 FL-VR TP13 270R 270R 2.5KZ R14A C10A TP14 106/16V 100P R10A 4580 2.5KZ VR1B B20K 2.5KZ HI2 FL 4580 HS-LO CK3.5-18 2.5KZ 106/16V 106/16V HI1 FL 106/16V 226/16V R11A AGND SW1C 110103000061...
  • Page 11 P12VA P12VA P+12V HT7550 +5VA RCA&Halosonic detect P+12V Vout +5VA 2.5KZ 100R 470K 220u/16V 100u/16V FL/FR+ 470K 2.5KZ 10uH +5VM TP33 PGND DGND RL/RR+ 470K HS-L+ 106/16V DGND HSL/R+ 470K HS-R+ 100P 470K DGND ADAS 1CH 1K@15mV ON ADAS 1CH 1K@14mV OFF 100P 15.8K 103/50V...
  • Page 12 EGND R34A C20A C23A C17A SW2I 106/16V +15V +15V R37A SW-SPDT U10A 2.5KZ R21A R24A R35A ADFL+ C13A R30A C21A R38A C19A R26A 4580 R28A 4580 106/16V SW2E AD_FL TP19 106/16V 2.5KZ HS-LO ADFL- ADFL SW-SPDT R20A C15A +15V 100R -15V -15V R36A...
  • Page 13 R41A C24A C28A C29A R40A C25A C26A R50A R52A FL-EQ R54A +15V R42A R51A 5.49K TP28 RL-EQ +15V 4580 R44A R53A R39A 4580 SW3B FL-EQ VR3C 4580 R56A C30A LPF_FL 4580 PRE_LO C100K VR3D 4580 110103000062 U22A 106/16V U14A TP24 220R C100K -15V...
  • Page 14 +VCC_H +VCC_H +VCC R405 R414 C407 101/50V Q405 Q408 Q410 D403 2N5401 2SD669 TIP35C PROT C404 BAS316 RL_H 100P R401 R425 Q403 Q412 Q401 C401 620R R403 R427 C1815 620R RL+SG R409 R416 5.76K R429 10uF/25V R421 R411 R407 C406 C1815 C1815 220R/1W...
  • Page 15 +VCC_H +VCC_H +VCC C212 681/50V R205 R214 C207 101/50V AGND Q205 Q208 Q210 D203 2N5401 2SD669 TIP35C PROT C204 BAS316 FL_H 100P R201 R225 Q203 Q212 Q201 C201 620R R203 R227 C1815 620R FL+SG R209 R216 5.76K R229 10uF/25V R221 R211 R207 C206...
  • Page 16 LED1 LED2 LED3 LED4 CN8P Title Size Number Revision Date: 2018-1-19 Sheet of File: C:\Documents and Settings\..\704_LED.SchDoc Drawn By:...
  • Page 22 MECHANICAL EXPLODED VIEW Pos. No. Description MK0101200843 DECORATIVE PLATE COVER MK0101100770 DECORATIVE PLATE HOLDER MK0201200514 FRONT PLATE 300.3*38.37MM HG0201200247 BACK PLATE 300.3*38.37mm SG0101100079 4P SPEAKER TERMINAL SG0101100078 3P POWER TERMINAL JD0501000069 4P SPK RUBBER COVER JD0501000071 3P POWER RUBBER COVER XG0201200224 BOTTOM PLATE 342.4*169.9MM T=1.2...
  • Page 24 INFINITY M704A SPARE PARTS LIST V1.1 Pos. No. Description UoM QTY MK0101200843 DECORATIVE PLATE COVER M704A MK0101100770 DECORATIVE PLATE Holder M704A SR0201300111 HOUSING M704A MK0201200514 FRONT PLATE 300.3*38.37MM M704A HG0201200247 BACK PLATE 300.3*38.37mm M704A MK0102200707 2P FUSE COVER M704A SG0101100079...

  • Page 25: Revision List

    Revision List Version 1.0 * Initial release. 2018-2 Version 1.1 * Add more materials in parts list. 2019 - 6...