Infinity-PS212-sub-sm维修电路原理图.pdf

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 VIEW/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 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 update 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 VOLTAGEYes/NoHi/Lo LineNom.UnitNotes NA 120vac/60HzYes108-132120VrmsNormal Operation EU 230vac/50-60HzYes207-264230VrmsNormal operation, MOMS required ParameterSpecificationUnit QA Test LimitsConditionsNotes Amp Section Type (Class AB, D, other)D- Load Impedance (speaker)4OhmsNominalZ-curve required Rated Output Power300WattsRegulated 120 V line THD Rated Power1%22k filter, 50Hz300W THD 1 Watt0.5%22k filter, 50Hz DC OffsetundefinedmV-DC 15measured at 50 Hz Input Sensitivity Line Input130 mVmVrms300 W 50Hz1 input driven Signal to Noise SNR-A-Weighted100dBArelative to rated powerA-Weighting filter SNR-unweighted70dBrrelative to rated power22k filter SNR rel. 1W-unweighted60dBrrelative to 1W Output22k filter Residual 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 Impedance Line Input6.5 kohmsNominal Active Filters Low Pass (fixed or variable)VARIABLE- Frequency50 - 150 Hz Slope24dB/Octave QButterworth - High Pass (HPF)FIXXED- Frequency29Hz Slope12dB/Octave Q2 - Friend CircuitFIXXED- Frequency60Hznotch filter Slope6dB/Octave Q2.5 - Video BoostNONE- Boost dB Range Hz Switches Main Power ON/OFFYES- Typerocker-Located on amp plateTV-5 LFE/ Low Pass filter modeYES- Typemini toggle -Located on amp plate Polarity SwitchYES-Off: 0; On: 180 Typemini toggle -Located on amp plate Limiter (yes/no)YEScompressor and limiter THD at Max. Output Powerless than 2%Maximum Output PowerMaximum THD as a result of limiting. Output Level Control Volume Control PotYES-gain control mounted on amp panel Taper (lin/log)log A taoer- minimum settingno output Input/Output Configuration Line In (L,C,R,AC3,Mono)Stereo-RCA phono jack, gold plated LFE InYES-Shared with R Line In jack Signal Sensing (ATO) Auto-Turn-On (yes/no)YES- ATO Input Test Frequency100Hz ATO Input Threshold1mVtyp.LPF On, BOS Off ATO Low Pass cutoff1kHzATO-LPF for noise immunityLPF On, BOS Off 2 PS series PS212 subwoofer ParameterSpecificationUnit QA Test LimitsConditionsNotes ATO Turn-on time2sAmp connected and AC on, then input signal applied ( 1 W output ) Auto Mute / Turn-OFF Time10minutes 5 < t < 15Time before muting, after signal is removed Power on Features Power on Delay timegreater than 2sec.AC Power Applied Power on LEDYES-Bi-color LED located on amp panel Normal On/Offgreen / redcolorATO mode only ATO-colorActive: green; Standby: red Transients/Pops ATO Transient5mV-peak Speaker Outputs Turn-on Transient30mV-peak Speaker OutputsAC Line cycled from OFF to ON Turn-off Transient30mV-peak Speaker OutputsAC Line cycled from ON to OFF Efficiency Stand-by Input Power10Wattstyp. nom. line voltage AC Power Cons.1W12Wattstyp. nom. line voltage Power Cons.rated power473Wattstyp. nom. line voltageInput power measured is REAL Watts, not VA Efficiency63%typ. nom. line voltage Protection Short Circuit Protection YES-Direct short at output Thermal Protection YES- threshold 65 deg. C at panel DC Offset ProtectionYES-DC present at Speaker Out leadRelay for driver/fire protection Line Fuse Rating ( 120 V )3.15AmpsType ADL or MDL Fuse holder on inside surface of amp panel 3 PS series PS212 subwoofer PS212 PACKAGE 4 PS series PS212 subwoofer Rear Panel CONTROLS ANDCONNECTIONS Line In 15050 Green: On Red: Standby LFE Input Phase Normal LFE Crossover Hz MaxMin Level Power PS212 ? Power Switch Line-Level/LFE Input Status LED Crossover Adjustment Subwoofer-Level Control LFE/Normal Selector Phase Switch 5 PS series PS212 subwoofer SYSTEMCONNECTIONS If 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 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 or DTSreceiver/processor with a low-frequency effects (LFE) or subwoofer output: 6 PS series PS212 subwoofer OPERATION Power On Plug your subwoofersAC cord into a wall outlet.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/Standby With the Power Switch in the ON position,the Status LED on the back panel will remain lit in red or green to indicate the On/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 minutes when no signal is detected from your system.The subwoofer will then power ON instantly when a signal is detected.During periods of normal use,the Power Switch can be left on.You may turn off the Power Switch for extended periods of nonoperation,e.g.,when you are away on vacation. Adjust Gain Turn your Subwoofer-Level Control up to the halfway position.If no sound emanates from the subwoofer,check the AC-line cord and input cables.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 have 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 response should not overpower the room but rather be adjusted so there is a harmonious blend across the entire musical range.Many users have a tendency to set the subwoofer volume too loud,adhering to the belief that a subwoofer is there to produce lots of bass.This is not entirely true.A subwoofer is there to enhance bass, extending the response of the entire system so the bass can be felt as well as heard.However,overall balance must be maintained or the music will not sound natural.An experienced listener will set the volume of the subwoofer so its impact on bass response is always there but is never obtrusive. Phase Control The Phase Switch determines whether the subwoofer speakers piston-like action moves in and out with the main speakers,0,or opposite the main speakers,180.Proper phase adjustment depends on several variables such as room size,subwoofer placement and listener position. Adjust the phase switch to maximize bass output at the listening position. Crossover Adjustment The Crossover Adjustment Control determines the highest frequency at which the subwoofer reproduces sounds.If your main speakers can comfort- ably reproduce some low-frequency sounds, set this control to a lower frequency setting, between 50Hz and 100Hz.This will concentrate the subwoofers efforts on the ultradeep bass sounds required by todays films and music.If you are using smaller bookshelf speakers that do not extend to the lower bass frequencies,set the Crossover Adjustment control to a higher setting,between 120Hz and 150Hz. NOTE: This control will have no effect if the LFE/Normal Selector is set to LFE.If you have a Dolby Digital or DTS processor/receiver,the Low-Pass Frequency is set by the processor/receiver.Consult your owners manual to learn how to view or change this setting. 7 PS series PS212 subwoofer PS212 EXPLODED VIEW 8 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 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 Counterclockwise (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 above, 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 - 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 from 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 yes 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 Check 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 r204.205.206.207 D112.D113, etc Change Q108.109.110.111 etc 12 PS series PS212 subwoofer PS212 Electrical Parts List Part number DescriptionQtyReference Designator INPUT/PREAMP PCB & DAUGHTER BOARD PCB Resistors 110-14152j26-eresistor 1.5K 1/4W 5% CF 26mm (RoHS)1R150 110-16101j26-eresistor 100 1/6W 5% CF 26mm (RoHS) 4R112,R113,R151,R152 110-16102j26-eresistor 1K 1/6W 5% CF 26mm (RoHS) 1R140 110-16103j26-eresistor 10K 1/6W 5% CF 26mm (RoHS)7R263,R118,R133,R136,R146,R149,R199 110-16105j26-eresistor 1M 1/6W 5% CF 26mm (RoHS)1R145 110-16151j26-eresistor 150 1/6W 5% CF 26mm (RoHS)1R139 110-16183j26-eresistor 18K 1/6W 5% CF 26mm (RoHS)1R147 110-16203j26-eresistor 20K 1/6W 5% CF 26mm (RoHS)1R200 110-16221j26-eresistor 220 1/6W 5% CF 26mm (RoHS) 2R119,R120 110-16223j26-eresistor 22K 1/6W 5% CF 26mm (RoHS)2R141,R148 110-16274j26-eresistor 270K 1/6W 5% CF 26mm (RoHS)1R138 110-16432j26-eresistor 4.3K 1/6W 5% CF 26mm (RoHS)1R254 110-16472j26-eresistor 4.7K 1/6W 5% CF 26mm (RoHS)1R144 110-16473j26-eresistor 47K 1/6W 5% CF 26mm (RoHS)1R137 110-16474j26-eresistor 470K 1/6W 5% CF 26mm (RoHS) 1R143 110-164r7j26-eresistor 4.7 1/6W 5% CF 26mm (RoHS)1R153 116-161001f26-emetal film resistor 1K 1/6W 1% MF26mm (RoHS) 1R252 116-161002f26-emetal film resistor 10K 1/6W 1% MF 26mm (RoHS)3R130,R131,R132 116-161504f26-emetal film resistor 1.5M 1/6W 1% MF26mm (RoHS) 1R142 116-161542f26-emetal film resistor 1/6W 15.4K 1% 26mm (RoHS)4R197,R198,R173,R178 116-161822f26-emetal film resistor 18.2K 1/6W 1% MF26mm (RoHS)1R188 116-161911f26-emetal film resistor 1.91K 1/6W1% MF26mm (RoHS)2R251,R191 116-162001f26-emetal film resistor 2.00K 1/6W 1% MF26mm (RoHS)1R202 116-162002f26-emetal film resistor 20.0K 1/6W 1% MF26mm (RoHS)1R193 116-162051f26-emetal film resistor 2.05K 1/6W MF 26mm (RoHS)1R253 116-162212f26-emetal film resistor 22.1K 1/6W 1% MF26mm (RoHS)2R204,R206 116-162262f26-emetal film resistor 22.6K 1/6W 1% MF26mm (RoHS)4R209,R231,R232,R296 116-162803f26-emetal film resistor 280K 1/6W1% MF 26mm (RoHS)1R201 116-163011f26-emetal film resistor 3.01K 1/6W1% MF26mm (RoHS)1R194 116-164421f26-emetal film resistor 4.42K 1/6W 1% MF26mm (RoHS) 2R205,R207 116-164751f26-emetal film resistor4.75K 1/6W MF 26mm (RoHS)2R109,R110 116-164752f26-emetal film resistor 47.5K 1/6W 1% MF26mm (RoHS)2R121,R122 116-164991f26-emetal film resistor 4.99K 1/6W 1% MF26mm (RoHS)1R265 116-165363f26-emetal film resistor 536K 1/6W1% MF 26mm (RoHS)1R195 116-165901f26-emetal film resistor 5.90K 1/6W 1% MF26mm (RoHS)1R189 116-166191f26-emetal film resistor 6.19K 1/6W 1% MF 26mm (RoHS)1R134 116-166491f26-emetal film resistor 6.49K 1/6W 1% MF26mm (RoHS)2R114,R115 116-169092f26-emetal film resistor 90.9K 1/6W MF 26mm (RoHS)1R190 116-169762f26-emetal film resistor 97.6K 1/6W1% MF26mm (RoHS)1R135 115-h103a101-evariable resistor A10K (RoHS)1R286 115-h503b405-evariable resistor B50K (RoHS)1R233 Capacitors 129-a104j633-e 0.1U 63V 5% MSC (RoHS)3C110,C149,C137 129-a222j633-e 0.0022u 63V 5% MSC (RoHS)2C181,C182 129-a224j633-e 0.22uF 63V 5% MSC (RoHS)2C121,C122 129-a333j633-e 0.033U 63V MSC (RoSH)2C209,C218 129-a473j633-e 0.047U 63V 5% MSC (RoHS)1C138 129-a683j633-e 0.068uF 63V 5% MSC (RoHS)4C142,C143,C201,C213 130-2b221k503-edisc capacitor 220P 50V 10% (RoHS)2C107,C108 130-3f104z503-edisc capacitor 0.1U 50V +80/-20% (RoHS)13 C112,C114,C124,C125,C130,C133,C135,C14 4,C145,C153,C154,C232,C233 130-3f473m503-edisc capacitor 0.047U 50V 20% (RoHS)1C180 130-sl101k503-edisc capacitor 100P 50V SL 10% (RoHS)1C120 13 PS series PS212 subwoofer Part number DescriptionQtyReference Designator INPUT/PREAMP PCB & DAUGHTER BOARD PCB 130-sl330ja03-edisc capacitor SL 33P 100V5% (RoHS)1C148 130-sl470k503-