Infinity-1300A-pwr-sm 维修电路原理图.pdf

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1、 Reference Series 1300a 1 CHANNEL POWER AMPLIFIER SERVICE MANUAL Infinity Systems, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev3 8/2008 RadioFans.CN 收音机爱 好者资料库 - CONTENTS - BASIC SPECIFICATIONS .1 DETAILED SPECIFICATIONS .2 PACKAGING.3 APPLICATIONS4 INSTALLATION/SETUP.5 BASIC TROUBLESHOO

2、TING.5 EXPLODED VIEW/PARTS LIST rev0.6 EXPLODED VIEW/PARTS LIST rev1.7 NOTE ON TOP COVER.8 AMPLIFIER BLOCK DIAGRAM.9 P.C.B. DRAWINGS.10 ELECTRICAL PARTS LIST rev0. 12 ELECTRICAL PARTS LIST rev1. 16 IC/TRANSISTOR PINOUTS rev0.19 IC/TRANSISTOR PINOUTS rev1.20 SCHEMATICS rev0.21 SCHEMATICS rev1.24 BULL

3、ETIN INF2008-02.27 TECH TIP INFTT2008-01.28 Reference 1300a Basic Specifications Output Power: 200W RMS x 1 4 ohms; 1% THD + N (14.4 VDC) 300W RMS x 1 2 ohms; 1% THD + N Signal-to-noise ratio: 85dBA (reference 1W into 4 ohms) Dynamic power: 342W channels 2 ohms Effective damping factor: 6.364 4 ohms

4、 Frequency response: 11Hz 330Hz (-3dB) Maximum input signal: 6.0V Maximum sensitivity: 100mV Output regulation: .11dB 4 ohms Dimensions (L x W x D): 14-3/16 x 9 x 2-11/16 (361mm x 229mm x 69mm) Fuse: 3 x 20A Infinity continually strives to update and improve existing products, as well as create new

5、ones. The specifications and details in this and related Infinity publications are therefore subject to change without notice. 1300a Reference Series RadioFans.CN 收音机爱 好者资料库INFINITY REFERENCE 1300a AMPLIFIER SPECIFICATIONS TEST VOLTAGE 14.4 +0.1V Specification Rating Unit Remarks Power Output 4ohm l

6、oads 50Hz 200W x 1 Watts (stereo mode)for each . ch 1.0%THD (Unit:W)(LPF=22K) Power Output 2ohm loads 50Hz 300W x 1 Watts (stereo mode)for each .ch 1.0%THD (Unit:W)(LPF=22K) THD Power 4 ohm loads and 1MDReference (Unit:%) LPF=22K 0.1% 50Hz % THD Power 2 ohm loads and 1MDReference (Unit:%) LPF=22K 0.

7、1% 50Hz % Full rated power Distortion 1KHz LPF=22KHz 0.1% % Signal/Noise Ratio a: 1 watt into 4 ohms b: full rated power (dB) 85 dBA 1V signal input Input Sensitivity Low Level Input( v) :full rated power 100mV-6V Volts 20% Frequency response (Unit:-3dB) 11Hz330Hz Hz -3dB Bass Boost:(Unit:dB) 45HZ (

8、5Hz ) 06dB dB 1dB Idle Current ( 2ohm) 0.8A A 0.15A MAX current : rated power (All channel 2 ohm loads) 38A A DC Offset: 30mV mV Damping Factor (4ohm): 200 Effective damping factor (4ohm): 6.364 Dynamic Power 2 ohms 342W Watts Output Regulation 4 ohms 0.11dB dB Remote Operating Voltages: 5V OFF 4V V

9、olts 1V Turn on delay time 2 to 3 Seconds Circuit Protection a. Temperature b. Speaker Short Circuit c. Operating Voltage Range 75 5 deg C Yes 816V Dimensions (L x W x H): 14-3/16 x 9 x 2-11/16 (361mm x 229mm x69mm) Inches mm Fuses 20A x 3 A 1300a Reference Series 2 Item Part Number Description Qty

10、1 CH4482901201 Outer Carton 1 2 REF1300a REF1300a Amplifier 1 3 Plastic Bag 1 4 BZL279112001 Packing Foam 1 5 Visit I Owners manual 1 6 Plastic Bag 1 7 Accessory kit consisting of: 1 LS1CJ0402507 Mounting Screws 4 1601-203G-00 SPARE 20A FUSES 3 REMOTE REF AMP Remote Level Control 1 2100-0009-04 (RJ1

11、1) control cable 1 PACKAGING 1300a Reference Series 33The Reference subwoofer amplifiers are single-channel amplifiers. There are two sets ofterminals to make it easy to connect multiplewoofers. Either set of (+/) terminals may beused when connecting woofers.To the right are four application diagram

12、s to helpplan your subwoofer system installation. NOTE: For simplicity, Figures 3 and 4 do not show power, remote and input connections.Subwoofers or voice coils connected in series.Subwoofers or voice coils connected in parallel.APPLICATIONS 1300aAND1600aFigure 3. Reference 1300a or 1600a amplifier

13、 with twowoofer connections.NOTE: Minimum impedance of each subwoofer = 4 ohms ifsubwoofers are connected in parallel and 1 ohm if theyare connected in series.NOTE: Minimum impedance of subwoofer = 2 ohmsFigure 4. Reference 1300a or 1600a amplifier with onewoofer connection. 1300a Reference Series 4

14、SETTING INPUT SENSITIVITY1. Initially turn the INPUT LEVEL control(s) to the minimum (counterclockwise) position.2. On the source unit, increase the volume control to 3/4 volume. Slowly increase theINPUT LEVEL control(s) toward three oclockuntil you hear slight distortion in the music.Then reduce th

15、e INPUT LEVEL slightly untildistortion is no longer heard. NOTE: After the source unit is on, blue LEDs (onthe top panel) will light, indicating the amplifieris on. If not, check the wiring, especially theremote connection from the source unit. Alsorefer to “Troubleshooting.”REMOTE LEVEL CONTROLThe

16、1300a, 1600a and 5350a include a remotelevel control. This will allow the subwoofer levelto be adjusted from the listening position.Connect the remote level control using the RJ11 jack on the side of the amplifier. Install the control module in the front of the vehiclewithin easy reach of the driver

17、. Both the under-side of the dash and the center console are suitable locations.UNDER-DASH MOUNTING Select a mounting location that allows easyaccess to the control while driving. Using theREMOTE LEVEL control as a template, mark anddrill holes in the mounting surface. Attach theREMOTE LEVEL control

18、 using the mountingscrews provided (Figure 11). Figure 11. Under-dash mounting of the REMOTE LEVEL control. Refer to the illustrations on the previous pagesfor control location. Reconnect the () negative lead to the vehiclesbattery. Apply power to the audio system andplay a dynamic music track.SETTI

19、NG THE CROSSOVER(S)Determine your system plans and set thecrossover-mode switch accordingly. If your system design does not include a subwoofer, set the crossover mode to FULL and skip to“Setting Input Sensitivity.”If your system includes a subwoofer, set thecrossover mode to HP (high-pass) for your

20、 full-range speakers. Adjust the crossover frequency to limit bass, and provide increasedsystem volume with less distortion.Mode Switch: Full: Allows a full-range signal through to thespeakers; can be used with larger full-rangespeakers such as 6 x 9s.HP: Allows a high-pass signal through to the spe

21、akers; should be used with most loudspeakers (can protect your full-range speakers from being overdriven with low frequencies, one cause of speaker damage).LP: Allows only bass to pass through to thespeakers; should be selected when poweringsubwoofers.High-Pass Filters: Initially set the crossover-f

22、requency control midway. While listening to music, adjust the crossover for the least perceived distortion from the speakers, allowingthem to reproduce as much bass as possible. Low-Pass Filters: For subwoofers, choose the highest frequency that removes vocal information from the sound of the subwoo

23、fer.If using the 475a to drive a subwoofer(s), set the crossover mode to LP (low-pass) on thechannels connected to the subwoofer.NOTE: The 1300a, 1600a and the subwoofer output of the 5350a are low-pass only and do not have a crossover-mode switch.INSTALLATION ANDSETUPRoute the cable behind the dash

24、 or other interior panels and under the carpet. Do notroute the cable outside the vehicle. Connect theRJ11 cable between the RJ11 receptacle on theamp and the receptacle on the REMOTE LEVELcontrol (Figure 12). Figure 12. REMOTE LEVEL control electrical connection.SETTING THE BASS BOOSTThe Bass Boost

25、 control will allow you to enhancethe bass output of your system at 50Hz up to 6dB.AUX OUTPUTReference amplifiers (except 5350a) areequipped with full-range outputs that can beused to connect additional amplifiers.STATUS LEDsPower: Indicates the amplifier is on.Protection: Refer to “Troubleshooting”

26、 for specificindications.Figure 13. LED status.TROUBLESHOOTING PROBLEM: No audio (POWER LED is off).CAUSE and SOLUTION: No voltage at BATT+and/or REM terminals, or bad or no groundconnection. Check voltages at amplifier terminals with VOM. PROBLEM: No audio (PROTECT LED glows red).CAUSE and SOLUTION

27、: DC voltage on amplifieroutput. Amplifier may need service; seeenclosed warranty card for service information. PROBLEM: No audio (PROTECT LED glows red).CAUSE and SOLUTION: Amplifier is overheated.Make sure amplifier cooling is not blocked atmounting location; verify that speaker-systemimpedance is

28、 within specified limits. PROBLEM:No audio (PROTECT LED glows red).CAUSE and SOLUTION: Voltage less than 9V onBATT+ connection. Check vehicle charging system. PROBLEM: No audio (PROTECT LED glows red).CAUSE and SOLUTION: Voltage greater than16V or less than 8.5V on BATT+ connection.Check vehicle cha

29、rging system. PROBLEM: Distorted audio.CAUSE and SOLUTION: Input sensitivity is not set properly, or amplifier or source unit isdefective. Check INPUT LEVEL setting, or checkspeaker wires for shorts or grounds. PROBLEM: Distorted audio (PROTECT LED glowsintermittently).CAUSE and SOLUTION: Short circ

30、uit in speakeror wire. Remove speaker leads one at a time tolocate shorted speaker or wire, then repair. PROBLEM: Music lacks “punch.”CAUSE and SOLUTION: Speakers are not connected properly. Check speaker connectionsfor proper polarity. 1300a Reference Series 5Rev0 - Serial number starting with EV00

31、03- 1300a Reference Series 6Rev1 - Serial number EV0017-01001 and above 1300a Reference Series 7 NOTE ON TOP COVER FOR INFINITY REFERENCE MODELS REF475A, REF1300A, REF1600A There was a revision in the top cover design starting with the serial number range(s) noted below, or identified by the brace d

32、esign in the supplied images. Note the Rev1 Top cover will not fit properly on the original heatsink. Top Cover Part Numbers MODEL PART NUMBER SERIAL NUMBER REF475A SG-0016-2601 EV0001-01000 to EV0001-09138 REF475A SG-0001-2607 EV0001-09139 And above REF1300A SG-0016-2601 EV0003-01000 to EV0003-0860

33、6 REF1300A SG-0001-2607 EV0003-08607 And above REF1600A SG-0016-2601 EV0004-01000 to EV0004-11811 REF1600A SG-0001-2607 EV0004-11812 And above 1300a Reference Series 81234ABCD4321DCBAOPOPOPOPOPOP11253201132050AMPSPEAKERBALANCEDINPUTUNITBALANCEDINPUTUNITGAIN CONTROLBASS BOOSTVARIABLE0dB- - 6dB/50HZMO

34、DEL FREQVARIABLE LP11HZ- - 320HZ/12dBMAIN AMPFRONTL2ohm/4ohmAUX OUT LAUX OUT R+-Battery+VCC- VCC+V- V+15V- 15VPOWER SUPPLYBLOCK DIAGRAM 1300a Reference Series 9 1300a Reference Series 10 1300a Reference Series 11REFERENCE 1300a Electrical Parts ListPart NumberQty Reference DesignatorMAIN BOARDResist

35、ors0702-10R0-02 Resistor CARBON 1/8W 0 5% 9R34 R35 R61 L1 L2 L3 L4 JP140 JP1410702-34R7-02 Resistor 1/2W 4.7 5% 3R242 R36 R370702-1220-02 Resistor 1/8W 22 5% 5R112 R210 R211 R212 R2130702-1680-02 Resistor 1/8W 68 5% 2R202 R2030702-1101-02 Resistor 1/8W 100 5% 7R42 R132 R133 R134 R136 R137 R1380702-1

36、221-02 Resistor 1/8W 220 5% 5R145 R129 R130 R131 R2070702-1471-02 Resistor 1/8W 470 5% 1R2401201-1021-03 Variable Resistor1k 1RW2000702-1561-02 Resistor 1/8W 560 5%2R127 R1280702-1751-02 Resistor 1/8W 750 5% 1R380702-1102-02 Resistor 1/8W 1K 5% 10R25 R30 R31 R32 R33 R113 R114 R200 R201 R105A0702-115

37、2-02 Resistor 1/8W 1.5K 5% 6R238 R241 R249 R250 R252 R2530702-1182-02 Resistor 1/8W 1.8K 5% 1R410702-1202-02 Resistor 1/8W 2K 5% 3R104 R219 R1150702-1222-02 Resistor 1/8W 2.2K 5% 4R124 R217 R218 R2040702-1332-02 Resistor 1/8W 3.3K 5% 1R1200702-1472-02 Resistor 1/8W 4.7K 5% 5R109 R110 R205 R26 R39070

38、3-1652-03 Resistor 1/8W 6.5K 1% 1R106A0702-1682-02 Resistor 1/8W 6.8K 5% 5R159 R157 R214 R215 R2160702-1752-02 Resistor 1/8W 7.5K 5% 2R50 R510702-1103-02 Resistor 1/8W 10K 5% 14R117 R21 R22 R27 R55 R62 R100 R101 R102 R103 R105 R121 R122 R1250702-1113-02 Resistor 1/8W 11K 5% 1R1580702-1123-02 Resisto

39、r 1/8W 12K 5% 1R1540702-1133-02 Resistor 1/8W 13K 5%1R190702-1153-02 Resistor 1/8W 15K 5% 4R152 R239 R256 R110A0702-1203-02 Resistor 1/8W 20K 5% 3R17 R18 R1190702-1223-02 Resistor 1/8W 22K 5% 8R106 R108 R147 R208 R1 R2 R7 R109A0702-1243-02 Resistor 1/8W 24K 5% 2R40 R2090702-1303-02 Resistor 1/8W 30K

40、 5% 1R1530702-1333-02 Resistor 1/8W 33K 5% 1R1180702-1473-02 Resistor 1/8W 47K 5% 23R13 R16 R20 R23 R24 R28 R29 R60 R63 R126 R107 R3 R4 R5 R6 R8 R9 R10 R11 R12 R14 R15 R640702-1563-02 Resistor 1/8W 56K 5% 3R150 R58 R2350702-1623-02 Resistor 1/8W 62K 5% 2R48 R490702-1823-02 Resistor 1/8W 82K 5% 1R590

41、702-1104-02 Resistor 1/8W 100K 5% 6D111 R149 R53 R54 R155 R1560702-1154-02 Resistor 1/8W 150K 5% 2R56 R570702-1334-02 Resistor 1/8W 330K 5% 1R1510702-1474-02 Resistor 1/8W 470K 5% 1R2060702-1205-02 Resistor 1/8W 2M 5% 1R440702-3101-02 Resistor 1/2W 100 5% 2R222 R2230702-24R7-02 Resistor 1/4W 4.7 5%

42、6R225 R226 R227 R228 R229 R2310702-3271-02 Resistor 1/2W 270 5% 2R220 R2210702-2103-02 Resistor 1/4W 10K 5% 2R143 R1440702-2203-02 Resistor 1/4W 20K 5%1R1480705-515X-07 Cement Resistor 5W 0.15 5% 6R233 R234 R236 R237 R259 R2601204-5031-30 Variable ResistorB50K 10% LEVEL1VR11204-1041-07 Variable Resi

43、storB100K 10% LP FREQ.1VR2DescriptionRev0 - Serial number starting with EV0003- 1300a Reference Series 12Part NumberQty Reference DesignatorDescriptionMAIN BOARD1204-5041-05 Variable Resistor C500K 10% BASS BOOST1VR30704-6202-02 Resistor 2W 2K 5% 2R107A R108A0702-3220-02 Resistor 1/2W 22 5% 3R142 R1

44、41 R1400702-1201-02 Resistor 1/8W 200 5% 1R450702-1562-02 Resistor 1/8W 5.6K 5% 1R460702-1822-02 Resistor 1/8W 8.2K 5% 1R123Capacitors06D212246001CAP,Electro 0.22UF/50V 5*11mm 20% 105 2C110 C11206D212256301CAP,Electro 2.2UF/50V 20% 5*11 105 1C20806D212266010CAP,Electro 22uF/50V 20% 5*11 105 12C3 C20

45、4 C4 C5 C7 C8 C9 C10 C12 C13 C14 C10306D214766109CAP,Electro 47uF/50V 20% 5*11 105 2C35 C3606D214764102CAP,Electro 47uF/25V 20% 5*11 105 2C139 C10206D211073116CAP,Electro100UF/16V20% 5*11 1053C137 C138 C10406D212273109CAP,Electro 220uF/16V 20% 5*11 105 2C209 C14006D21477H100CAP,Electro470UF/80V 20%

46、16*25mm2C135 C13606D214775117CAP,Electro 470uF/35V 20% 10*17 1052C133 C13406D214789100CAP,Electro4700UF/63V 20% 35*27mm2C144 C14506D212274001CAP,Electro 220UF/25V 20% 8*12 105 3C1 C2 C20706D212285101CAP,Electro 2200UF/35V 16*26MM 20% 1054C122 C123 C125 C12406D231017000Ceramic Capacitor 100pF/100V 20

47、% 11C23 C24 C15 C16 C18 C19 C20 C21 C22 C56 C1706D231047000Ceramic Capacitor 0.1uF/100V 20% 28C101 C1A C1B C25 C26 C27 C28 C29 C30 C31 C32 C33 C34 C100 C111 C114 C115 C117 C118 C119 C120 C121 C6 C53 C54 C55 C128 C12906D232217000Ceramic Capacitor 220pF/100V 20% 1C3806D234717001Ceramic Capacitor 470PF

48、/100V 20% 1C3706D232207000Ceramic Capacitor 22pF/100V 20% 2C42 C4406D235607000Ceramic Capacitor 56PF/100V 20% 2C201 C20206D236817000Ceramic Capacitor 680pF/100V 20% 2C200 C20306D234737001Ceramic Capacitor 473/100V 20% 1C20506D321027200Ceramic Capacitor 102/100V 5% 2C141 C14206D321037200Ceramic Capac

49、itor 103/100V 5% 2C126 C12706D321047200Ceramic Capacitor 104/100V 5% 8C48 C116 C130 C131 C132 C146 C147 C20606D211074100CAP,Electro 100uF/25V 20% 6.3*11 105 2C148 C14306D321839200Ceramic Capacitor 183/63V 5%3C50 C51 C5206D343939400Ceramic Capacitor 393/63V 5% 1C4906D323349000Ceramic Capacitor 334/63

50、V 5%2C46 C4706D342249400Ceramic Capacitor 224/63V 5% 2C210 C211Semiconductors04WY-82AV10 Zener Diode 8.2V DO-35 0.5W 1DZ10004ZL-6A10-00 Diode 6A10 1000V1D10604WY-56AV10 Zener Diode 5.6V 0.5W 20MA 52MM DO-35 0.5W 1DZ10104PT-4148-04 Diode 1N4148 GSS 200MA 75V DO-35 12D100 D101 D102 D103 D104 D105 D200