Infinity-PS212-sub-sm 维修电路原理图.pdf

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1、 PS Series PS Series PS212 Subwoofer PS212 Subwoofer SERVICE MANUAL Infinity Systems, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev0 12/2006 RadioFans.CN 收音机爱 好者资料库 - CONTENTS - BASIC SPECIFICATIONS .1 DETAILED SPECIFICATIONS.2 PACKAGING.4 CONTROLS AND CONNECTIONS.5 OPERATION.7 EXPLODED V

2、IEW/PARTS LIST .8 TEST SET UP AND PROCEDURE.9 BLOCK DIAGRAM.10 TROUBLESHOOTING FLOW CHART.12 ELECTRICAL PARTS LIST (120v) .13 PCB DRAWINGS.18 SEMICONDUCTOR PINOUTS.22 SCHEMATICS (120v).23 Basic Specifications PS212 Powered Subwoofer Frequency Response: 25Hz 150Hz (3dB) Maximum Amplifier Output: 400

3、Watts RMS; 700 Watts Peak (20Hz 150Hz with no more than 0.1% THD) Crossover Frequencies: 50Hz 150Hz, 24dB/octave, continuously variable Driver: 12 (250mm) MMD Dimensions (H x W x D): 18 x 14-3/8 x 18-3/4 (with grille) (457mm x 365mm x 476mm) Weight: 44.7 lb (20.3kg) Infinity continually strives to u

4、pdate and improve existing products, as well as create new ones. The specifications and construction details in this and related Infinity publications are therefore subject to change without notice. 1 PS series PS212 subwoofer RadioFans.CN 收音机爱 好者资料库PS 212 subwoofer 400 W Powered Sub/ Plate Amp LINE

5、 VOLTAGEYes/NoHi/Lo LineNom.UnitNotesNA 120vac/60HzYes108-132120VrmsNormal OperationEU 230vac/50-60HzYes207-264230VrmsNormal operation, MOMS requiredParameterSpecificationUnitQA Test LimitsConditionsNotesAmp SectionType (Class AB, D, other)D-Load Impedance (speaker)4OhmsNominalZ-curve requiredRated

6、Output Power300WattsRegulated 120 V lineTHD Rated Power1%22k filter, 50Hz300WTHD 1 Watt0.5%22k filter, 50HzDC OffsetundefinedmV-DC 15measured at 50 HzInput SensitivityLine Input130 mVmVrms300 W 50Hz1 input drivenSignal to NoiseSNR-A-Weighted100dBArelative to rated powerA-Weighting filterSNR-unweight

7、ed70dBrrelative to rated power22k filterSNR rel. 1W-unweighted60dBrrelative to 1W Output22k filterResidual Noise Floor2mVrmsVolume max, using RMS reading DMM/VOM (or A/P)Residual Noise Floor1mVrms(max)Volume max, w/ A/P Swept Bandpass Measurement (Line freq.+ harmonics)Input ImpedanceLine Input6.5 k

8、ohmsNominalActive FiltersLow Pass (fixed or variable)VARIABLE-Frequency50 - 150 HzSlope24dB/OctaveQButterworth -High Pass (HPF)FIXXED-Frequency29HzSlope12dB/OctaveQ2 -Friend CircuitFIXXED-Frequency60Hznotch filterSlope6dB/OctaveQ2.5 -Video BoostNONE-Boost dBRange HzSwitchesMain Power ON/OFFYES-Typer

9、ocker-Located on amp plateTV-5LFE/ Low Pass filter modeYES-Typemini toggle -Located on amp platePolarity SwitchYES-Off: 0; On: 180Typemini toggle -Located on amp plateLimiter (yes/no)YEScompressor and limiterTHD at Max. Output Powerless than 2%Maximum Output PowerMaximum THD as a result of limiting.

10、Output Level ControlVolume Control PotYES-gain control mounted on amp panelTaper (lin/log)log A taoer- minimum settingno outputInput/Output ConfigurationLine In (L,C,R,AC3,Mono)Stereo-RCA phono jack, gold platedLFE InYES-Shared with R Line In jackSignal Sensing (ATO)Auto-Turn-On (yes/no)YES-ATO Inpu

11、t Test Frequency100HzATO Input Threshold1mVtyp.LPF On, BOS OffATO Low Pass cutoff1kHzATO-LPF for noise immunityLPF On, BOS Off2 PS series PS212 subwoofer ParameterSpecificationUnitQA Test LimitsConditionsNotesATO Turn-on time2sAmp connected and AC on, then input signal applied ( 1 W output )Auto Mut

12、e / Turn-OFF Time10minutes 5 t 15Time before muting, after signal is removedPower on FeaturesPower on Delay timegreater than 2sec.AC Power AppliedPower on LEDYES-Bi-color LED located on amp panelNormal On/Offgreen / redcolorATO mode onlyATO-colorActive: green; Standby: redTransients/PopsATO Transien

13、t5mV-peak Speaker OutputsTurn-on Transient30mV-peak Speaker OutputsAC Line cycled from OFF to ONTurn-off Transient30mV-peak Speaker OutputsAC Line cycled from ON to OFFEfficiencyStand-by Input Power10Wattstyp. nom. line voltageAC Power Cons.1W12Wattstyp. nom. line voltagePower Cons.rated power473Wat

14、tstyp. nom. line voltageInput power measured is REAL Watts, not VAEfficiency63%typ. nom. line voltageProtectionShort Circuit Protection YES-Direct short at outputThermal Protection YES- threshold 65 deg. C at panelDC Offset ProtectionYES-DC present at Speaker Out leadRelay for driver/fire protection

15、Line Fuse Rating ( 120 V )3.15AmpsType ADL or MDL Fuse holder on inside surface of amp panel3 PS series PS212 subwoofer PS212 PACKAGE4 PS series PS212 subwoofer Rear PanelCONTROLS ANDCONNECTIONSLine In15050Green: OnRed: StandbyLFEInputPhaseNormalLFECrossoverHzMaxMinLevelPowerPS212?Power Switch Line-

16、Level/LFE Input Status LEDCrossover AdjustmentSubwoofer-Level Control LFE/Normal SelectorPhase Switch5 PS series PS212 subwoofer SYSTEMCONNECTIONSIf your receiver/processor does not contain a Dolby Digital or DTS processor but has subwoofer outputs:Set line-level/LFE switch to “Normal.”NOTE: If your

17、 receiver/processor has only one sub out,you may use either the L or R input.Set LFE/Normal switch to “LFE.”If you have a DolbyDigital orDTSreceiver/processor with alow-frequency effects (LFE) orsubwoofer output:6 PS series PS212 subwoofer OPERATIONPower OnPlug your subwoofersAC cord into a wall out

18、let.Do not use the outlets on the back of the receiver.Initially set the Subwoofer-Level Control to the “min”position.Turn on your sub by pressing the Power Switch on the rear panel.Turn on your entire audio system and start a CD or movie soundtrack at a moderate level.Auto On/StandbyWith the Power

19、Switch in the ON position,the Status LED onthe back panel will remain lit in red or green to indicate theOn/Standby mode of the subwoofer.RED = STANDBY (No signal detected,Amp Off)GREEN = ON (Signal detected,Amp On)The subwoofer will automatically enter the Standby mode after approxi-mately 10 minut

20、es when no signal is detected from your system.The subwoofer will then power ON instantly when a signal is detected.Duringperiods of normal use,the Power Switch can be left on.You may turnoff the Power Switch for extended periods of nonoperation,e.g.,whenyou are away on vacation.Adjust GainTurn your

21、 Subwoofer-Level Control up to the halfway position.If nosound emanates from the subwoofer,check the AC-line cord and inputcables.Are the connectors on the cables making proper contact? Is the AC plug connected to a “live”receptacle? Has the Power Switch been pressed to the “On”position? Once you ha

22、ve confirmed that the subwoofer is active,proceed by playing a CD,record or cassette.Use a selection that has ample bass information.Set the overall volume control of the preamplifier or stereo to a comfort-able level.Adjust the Subwoofer-Level Control until you obtain a pleasing blend of bass.Bass

23、response should not overpower the room but rather be adjusted so there is a harmonious blend across the entiremusical range.Many users have a tendency to set the subwoofer volumetoo loud,adhering to the belief that a subwoofer is there to produce lotsof bass.This is not entirely true.A subwoofer is

24、there to enhance bass,extending the response of the entire system so the bass can be felt aswell as heard.However,overall balance must be maintained or the musicwill not sound natural.An experienced listener will set the volume of the subwoofer so its impact on bass response is always there but is n

25、ever obtrusive.Phase ControlThe Phase Switch determines whether the subwoofer speakers piston-like action moves in and out with the main speakers,0,or oppositethe main speakers,180.Proper phase adjustment depends on several variables such as room size,subwoofer placement and listener position.Adjust

26、 the phase switch to maximize bass output at the listening position.Crossover AdjustmentThe Crossover Adjustment Control determines the highest frequency atwhich the subwoofer reproduces sounds.If your main speakers can comfort-ably reproduce some low-frequency sounds, set this control to a lowerfre

27、quency setting, between 50Hz and 100Hz.This will concentrate thesubwoofers efforts on the ultradeep bass sounds required by todaysfilms and music.If you are using smaller bookshelf speakers that do not extend to the lower bass frequencies,set the Crossover Adjustmentcontrol to a higher setting,betwe

28、en 120Hz and 150Hz.NOTE: This control will have no effect if the LFE/Normal Selector is setto LFE.If you have a Dolby Digital or DTS processor/receiver,the Low-PassFrequency is set by the processor/receiver.Consult your owners manual to learn how to view or change this setting. 7 PS series PS212 sub

29、woofer PS212 EXPLODED VIEW8 PS series PS212 subwoofer PS212 Test Set Up and Procedure SYSTEM AURAL SWEEP TEST Equipment needed: Function/signal generator/sweep generator Multimeter RCA cables General Unit Function (UUT = Unit Under Test) Switches/knobs on the amplifier faceplate: Phase switch either

30、 position LFE/Normal switch Normal Low Pass Frequency Adjust full CW (150Hz) 1. From the signal generator, Connect both right and left line level inputs (RCA jacks) to signal generator and UUT. Use Y-cable if necessary from mono source. 2. On the amplifier, turn the LEVEL control full Counterclockwi

31、se (Min). 3. Turn on generator, adjust to 100mV, 50 Hz. 4. Plug in UUT; turn the power switch ON. Turn LEVEL control full Clockwise (Max). 5. LED (on control panel) should now be Green; immediate bass response should be heard and felt from rear port tube opening. Sweep Function 1. Follow steps 1-5 a

32、bove, using a sweep generator as a signal source. 2. Sweep generator from 20Hz to 1kHz. Listen to the cabinet and drivers for any rattles, clicks, buzzes or any other noises. If any unusual noises are heard, remove woofer and test. Driver Function (Woofer) 1. Remove woofer from cabinet; detach + and

33、 - wire clips. 2. Check DC resistance of woofer; it should be 3.3 ohms10%. 3. Connect a pair of speaker cables to driver terminals. Cables should be connected to an integrated amplifier fed by a signal generator. Turn on generator and adjust so that speaker level output is 5.0V. 4. Sweep generator f

34、rom 20Hz to 1kHz. Listen to driver for any rubbing, buzzing, or other unusual noises. 9 PS series PS212 subwoofer 10 PS series PS212 subwoofer 11 PS series PS212 subwoofer PS212 Troubleshooting Flow Chart no yes yes yes no yes yes LED red LED light Green yes yes no yes yes no no yes yes yes no no ye

35、s yes yes no yes yes AMP no signal out DC voltage check Vcc Check +/-15v LED light Green or Check fuse, transformer, D123.D124 etc Check Class 300W MODULE Check d130,r263.265 etc Check ,+vbbp&-vbbp dc voltage Check k101 etc Check Q116,Q117,Q118,D122 Check,Q102,101,U103 etc Check P104 pin8 signal Che

36、ck U105 Pin7 signal Test J111 signal Check P102 signal Amp assy OK, END Check U101,R233,286 , U102, etc Check r257.r258 etc Check limiter Circuit C151 Check U106 r204.205.206.207D112.D113, etc Change Q108.109.110.111 etc 12 PS series PS212 subwoofer PS212 Electrical Parts ListPart number Description

37、QtyReference DesignatorINPUT/PREAMP PCB & DAUGHTER BOARD PCBResistors110-14152j26-eresistor 1.5K 1/4W 5% CF 26mm (RoHS)1R150110-16101j26-eresistor 100 1/6W 5% CF 26mm (RoHS) 4R112,R113,R151,R152110-16102j26-eresistor 1K 1/6W 5% CF 26mm (RoHS) 1R140110-16103j26-eresistor 10K 1/6W 5% CF 26mm (RoHS)7R2

38、63,R118,R133,R136,R146,R149,R199110-16105j26-eresistor 1M 1/6W 5% CF 26mm (RoHS)1R145110-16151j26-eresistor 150 1/6W 5% CF 26mm (RoHS)1R139110-16183j26-eresistor 18K 1/6W 5% CF 26mm (RoHS)1R147110-16203j26-eresistor 20K 1/6W 5% CF 26mm (RoHS)1R200110-16221j26-eresistor 220 1/6W 5% CF 26mm (RoHS) 2R1

39、19,R120110-16223j26-eresistor 22K 1/6W 5% CF 26mm (RoHS)2R141,R148110-16274j26-eresistor 270K 1/6W 5% CF 26mm (RoHS)1R138110-16432j26-eresistor 4.3K 1/6W 5% CF 26mm (RoHS)1R254110-16472j26-eresistor 4.7K 1/6W 5% CF 26mm (RoHS)1R144110-16473j26-eresistor 47K 1/6W 5% CF 26mm (RoHS)1R137110-16474j26-er

40、esistor 470K 1/6W 5% CF 26mm (RoHS) 1R143110-164r7j26-eresistor 4.7 1/6W 5% CF 26mm (RoHS)1R153116-161001f26-emetal film resistor 1K 1/6W 1% MF26mm (RoHS) 1R252116-161002f26-emetal film resistor 10K 1/6W 1% MF 26mm (RoHS)3R130,R131,R132116-161504f26-emetal film resistor 1.5M 1/6W 1% MF26mm (RoHS) 1R

41、142116-161542f26-emetal film resistor 1/6W 15.4K 1% 26mm (RoHS)4R197,R198,R173,R178116-161822f26-emetal film resistor 18.2K 1/6W 1% MF26mm (RoHS)1R188116-161911f26-emetal film resistor 1.91K 1/6W1% MF26mm (RoHS)2R251,R191116-162001f26-emetal film resistor 2.00K 1/6W 1% MF26mm (RoHS)1R202116-162002f2

42、6-emetal film resistor 20.0K 1/6W 1% MF26mm (RoHS)1R193116-162051f26-emetal film resistor 2.05K 1/6W MF 26mm (RoHS)1R253116-162212f26-emetal film resistor 22.1K 1/6W 1% MF26mm (RoHS)2R204,R206116-162262f26-emetal film resistor 22.6K 1/6W 1% MF26mm (RoHS)4R209,R231,R232,R296116-162803f26-emetal film

43、resistor 280K 1/6W1% MF 26mm (RoHS)1R201116-163011f26-emetal film resistor 3.01K 1/6W1% MF26mm (RoHS)1R194116-164421f26-emetal film resistor 4.42K 1/6W 1% MF26mm (RoHS) 2R205,R207116-164751f26-emetal film resistor4.75K 1/6W MF 26mm (RoHS)2R109,R110116-164752f26-emetal film resistor 47.5K 1/6W 1% MF2

44、6mm (RoHS)2R121,R122116-164991f26-emetal film resistor 4.99K 1/6W 1% MF26mm (RoHS)1R265116-165363f26-emetal film resistor 536K 1/6W1% MF 26mm (RoHS)1R195116-165901f26-emetal film resistor 5.90K 1/6W 1% MF26mm (RoHS)1R189116-166191f26-emetal film resistor 6.19K 1/6W 1% MF 26mm (RoHS)1R134116-166491f2

45、6-emetal film resistor 6.49K 1/6W 1% MF26mm (RoHS)2R114,R115116-169092f26-emetal film resistor 90.9K 1/6W MF 26mm (RoHS)1R190116-169762f26-emetal film resistor 97.6K 1/6W1% MF26mm (RoHS)1R135115-h103a101-evariable resistor A10K (RoHS)1R286115-h503b405-evariable resistor B50K (RoHS)1R233Capacitors129

46、-a104j633-e 0.1U 63V 5% MSC (RoHS)3C110,C149,C137129-a222j633-e 0.0022u 63V 5% MSC (RoHS)2C181,C182129-a224j633-e 0.22uF 63V 5% MSC (RoHS)2C121,C122129-a333j633-e 0.033U 63V MSC (RoSH)2C209,C218129-a473j633-e 0.047U 63V 5% MSC (RoHS)1C138129-a683j633-e 0.068uF 63V 5% MSC (RoHS)4C142,C143,C201,C21313

47、0-2b221k503-edisc capacitor 220P 50V 10% (RoHS)2C107,C108130-3f104z503-edisc capacitor 0.1U 50V +80/-20% (RoHS)13C112,C114,C124,C125,C130,C133,C135,C144,C145,C153,C154,C232,C233130-3f473m503-edisc capacitor 0.047U 50V 20% (RoHS)1C180130-sl101k503-edisc capacitor 100P 50V SL 10% (RoHS)1C12013 PS seri

48、es PS212 subwoofer Part number DescriptionQtyReference DesignatorINPUT/PREAMP PCB & DAUGHTER BOARD PCB130-sl330ja03-edisc capacitor SL 33P 100V5% (RoHS)1C148130-sl470k503-edisc capacitor 47P 50V 10% (RoHS)1C128135-3105m50-eelectrolytic CAP. 1U 50V 20% (RoHS)1C126135-3106m50-eelectrolytic CAP. 10uF 5

49、0V 20% (RoHS)4C109,C111,C123,C129135-3107m16-eelectrolytic CAP. 100uF 16V 20% (RoHS)5C113,C115,C132,C134,C136135-3107m25-eelectrolytic CAP. 100U 25V 20% (RoHS)1C152135-3226m50-eelectrolytic CAP. 22U 50V 20% (RoHS)1C151139-3227m16-e220uF 16V20% TAP (RoHS)1C131129-a473j633-emetalzie CAP. 0.047U 63V 5%

50、 MSC (RoHS) 1C150Semiconductors192-027c1815gr-etransistor 2SC1815GR TOSHIBA(RoHS) NPN3Q101,Q102,Q103197-031n4148-ediode 100mA 75V SIGNAL 1N4148ROHM (RoHS)7D105,D106,D108,D109,D110,D112,D113199-55000395-ediode 3.9V 1/2W 52mm (RoHS)1D130190-06m4558d-eI.C. OPA 4558D DUAL OP-AMP (RoHS)2U101,U103190-16tl