Klipsch-RSW15-pwr-sm 维修电路原理图.pdf

KLIPSCH, INC. SERVICE MANUAL Subwoofer Amplifier Model: RSW-15 RadioFans.CN 收音机爱 好者资料库Klipsch Amplifier Service Manual KSAMM-017 Page 1 CAUTION! Lethal voltages are present and exposed when cover is off of amplifier. Only qualified service technicians should attempt to repair this product. ? ? TABLE OF CONTENTS RadioFans.CN 收音机爱 好者资料库Klipsch Amplifier Service Manual KSAMM-017 Page 2 SPECIFICATIONS .3 Model: RSW-15 .3 THEORY OF OPERATION .4 INPUTS.4 SIGNAL CONDITIONING .4 OUTPUT.4 POWER SUPPLY.4 OTHER FEATURES.5 PARTS LISTS.6 SCHEMATIC DIAGRAMS.13 Klipsch Amplifier Service Manual KSAMM-017 Page 3 SPECIFICATIONS Model: RSW-15 Rated Power Output 650 Watts Continuous into 6 Maximum Power Output 2400 Watts(peak) into 6 Frequency Band-width 35 - 110Hz THD 1.0% 1 Watt 0.5% Rated Power 10.0% Maximum Power Signal to Noise 90dB or better 60 Hz Hum 15 minutes Low Pass Variable 40 - 120Hz with 24dB/Octave Slope Klipsch Amplifier Service Manual KSAMM-017 Page 4 THEORY OF OPERATION RSW-15 Amplifier INPUTS This amplifier utilizes two RCA connectors(L & R) for LINE LEVEL signal input. A second set of RCA connectors are connected directly to the inputs to provide a non-filtered LINE output. This is for passing a full range signal to a second subwoofer, power amplifier, etc. SIGNAL CONDITIONING All pre-amplification, filtering, and signal conditioning is accomplished using dual op-amp device U2 and quad op-amp devices U1, and U3. Op-amp U1A, and U3C are gain stages that performs the necessary buffering and isolation of the input signals. The input signal/s from Line In are fed to summing amp U1A. From there the signal passes through the fixed Low Pass filter U1B, the variable Low Pass filter U1C, and Notch filter U2A. In this amplifier U2A is not actively used as a notch filter and is operated as a unity gain buffer amp stage. The LFE Mode switch S1 selects either the filtered signal or a signal that has bypassed the LowPass and Notch filters. From there the signal passes through U3A which is the Level Control stage. Following U3A the signal goes to High Pass filter U3B which has a slope of approximately 12dB/octave below 20Hz. Stage U3C is a buffer/driver stage which also acts as a selectable phase inverter via the Polarity switch S3. From here the signal is sent to the power output section of the amplifier. OUTPUT The Power Amplifier(PA) section of this amplifier is a balanced bridge design. Signal splitter stages U301B and U301C feed pre-amps U301A and U301D which in turn feed the signal to driver stages Q303, Q304, and Q308, Q309. The signal is then applies to the power output MOSFETs Q306, Q307, Q308, and Q310, Q311, Q312. The maximum output capability of the amplifier is determined primarily by the output transistor type, and the DC rail voltage/current supplied by the power supply. The value of feedback resistors R314and R330 determine the sensitivity of the PA section. Trimmer pots RP301 and RP302 establish the DC offsets. POWER SUPPLY The RSW-12 utilizes a high current switching power supply with proprietary output controller circuitry. This controller circuitry tracks the input signal and continually adjusts the rail voltages to what is needed at the time. This creates a high efficiency amplifier since very little current is flowing when not needed. The power supply also supplies a highly regulated +/- 10Vdc for the op-amps. LIMITERS This amplifier contains several limiting circuits for the purpose of controlling the signal so as not to drive the speakers beyond their physical limits. Op-amp stage U5A along with components C107 and R78 form an overall limiter which limits the output to the speakers to the rated power level. U5B and U5C form a Tracking Limiter which monitors the power supply capacity. the tracking limiter does a hard limit of the signal when it detects that the demands on the power supply are exceeding its capability. The Frequency Dependent Limiter consists of low-pass filters U3D & U4B, and inverter stage U4C. This circuit limits the power output only below a specific frequency. In the RSW-12 this frequency is approximately 23Hz. The Clip Detect circuit U5D is not used. Klipsch Amplifier Service Manual KSAMM-017 Page 5 OTHER FEATURES AUTO ON/OFF This amplifier features an automatic on/off circuit that allows the user to set up once and forget it. With the power switch in the “AUTO” position, a switching circuit consisting of U1D, U4A, & U4D, senses an input signal. From this switching circuit, JFET Q301 on the power amp board is biased OFF which removes the grounding of the signal. For the protection of the speaker when the amplifier is first plugged in, there is a short delay before JFET Q1 is biased OFF. The sensing circuit will bias Q301 ON after the input signal is absent for approximately 15 minutes or more which shorts the signal path to ground. With the power switch in the “ON” position the signal sensing circuit is bypassed and Q301 is always turned OFF. A bi-color LED indicates the status of the amplifier at any given time. The LED will be GREEN when the control circuit is activated and RED when in sleep mode. Klipsch Amplifier Service Manual KSAMM-017 Page 6 RSW-15 Parts List (Features Board) PART VALUE/PART NUMBER KLIPSCH PART #RESISTORS, FIXED R207 150 1/4 W Metal Film 1% R14 200 “ R117 499 “ R29,30 1.00K “ R28 1.15K R115,118 2.00K “ R209 2.21K “ R12 2.80K “ R204 3.32K “ R13 5.11K R102,106 5.49K “ R17 6.49K “ R1,2,21,22,23,103,107,108,109,110,111,112,113,208, 210 10.0K “ R200 15.0K “ R201 16.9K R26 17.4K “ R24,27 20.5K R25 26.1K R4,5,8,9 30.1K “ R3 46.4K “ R114,116 100K “ C102,103,R16,100,101 130K R202 150K R15,203 475K “ R6,10,18 0 W Carbon Film 5% R205 470 “ R79 2.20K R78 330K R206 9.1M R211 200 W Carbon Film 5% RESISTORS, VARIABLE R1 LOWPASS CONTROL Dual 50K Linear Taper Pot. CAPACITORS C1,7,105,106 100pF Ceramic 10% C200 470pF “ 5% C202,204 1000pF “ 10% C201 .1F “ 20% C3,5 .027F Film 5% C100,R104 .047F C4,6 .068F “ C11 .10F “ C101,R105 .12F “ C10 .18F “ C8,9 .22F “ Klipsch Amplifier Service Manual KSAMM-017 Page 7 RSW-15 Parts List (Features Board) PART VALUE/PART NUMBER KLIPSCH PART # ELECTROLYTIC CAPS C2 4.7F/35V NP C14,15 4.7F/50V C203 47F/50V C107 100F/35V C104 470F/50V DIODES D100,101,102,103,104,105,106,107,110,200 1N4148 Z100 ZENER, 500MW 8.2V 1N5237B Z101 ZENER, 500MW 14V 1N5244B DZ0011 ZENER, 500MW 3.3V 1N5225B ICs U1,3 TL074/084 Quad Op-Amp U4,5 LM324N Quad Op-Amp U2 TL082 Dual Op-Amp TRANSISTORS Q1 J111 N-CH JFET Selected TR only SWITCHES S1,2,3 SPDT TOGGLE SP Power ON/OFF DPST ROCKER SWITCH CONNECTORS J1 Line In/Out Quad RCA Jack F1 Fuse Holder VOLUME CONTROL BOARD R2 10K AUDIO TAPER POT. Klipsch Amplifier Service Manual KSAMM-017 Page 8 RSW-15 Parts List (Power Amp Board) PART VALUE/PART NUMBER KLIPSCH PART #RESISTORS, FIXED R396,397 10 .6W MF1% FlameProof R385 47 “ R386 100 “ R373 200 1/4 W Metal Film 1% R351 210 “ R390,391 274 “ R389,392 332 “ R324,342 392 “ R3112,3113 750 “ R344,370,371,372,3101 1.00K R368 1.21K R345 1.50K R3100 2.05K R315,317,331,333 2.21K R382 2.43K R320,321,336,337,369 3.32K R306 4.12K R316,318,332,334 4.53K R3108 4.75K R311,328,355,356,359,379 4.99K R304 5.11K R319,322,335,338,384 6.81K R305 7.87K R377,380 10.0K R312,329 15.0K R308,309,375,381 20.0K R357,361 22.1K R302,307 23.7K R358,362 30.1K R360 38.3K R363 47.5K R367 51.1K R352,353,354,364,3104,3105 100K R314,330 267K R365 294K R313,395,3114 0.0 1/4 WATT R323,326,327,339,340,341 339 1/4 W Carbon Film 5% R350 4.70K R310,349 10.0K R3106 30.0K R376 33.0K R303 100K R3107 330K R399 1.00M R388 10.0K 1/2 W Carbon Film 5% R3103 200K R3102 4.7 2W Metal Oxide 5% R348 3.90K R346,347,393,394 0.10 R325,343 4.70K 1W Metal Oxide 5% Klipsch Amplifier Service Manual KSAMM-017 Page 9 RSW-15 Parts List (Power Amp Board) PART VALUE/PART NUMBER KLIPSCH PART # RESISTORS, VARIABLE RP301,302 5K TRIMMER POT CAPACITORS C307,317 22pF Ceramic 50V C343,350,351,370,371 .1F “ C344 .22F “ C341 100pF Ceramic 100V C340 330pF C335,366,345,347 470pF C337,367 2200pF C313,324,331 4700pF C322,338 .01F C304,311,312,322,323 0.1F C360 470pF Ceramic 1KV C358 2200pF Ceramic 500V C342 2200pF Film C306,316 .022F “ C303 .047F “ C302 0.1F “ C361 6.8F “ ELECTROLYTIC CAPS C301,309,310,319,320 22F /50V C305,315,326 22F/35V C348 100F/35V C329,330 100F/25V C355,56 470F/200V TRANSISTORS Q302,304,309,313,316,324 2N5401 PNP Q303,308,322,323 2N5551 NPN 118729 Q305,310,320,321 IRF640 MOSFET TO220 118731 Q306,307,311,312 IRF9640 MOSFET TO220AB 118773 Q301 J113 N-CH JFET TO92 Q314,315,317 2N4401 NPN Q319 TIP47 NPN THERMISTOR TH302,303 100K 25C NTC TH301 PTH9L04BD222TS2F510 ICs U301 TL074/084 QUAD OPAMP 118769 U306 LM324 QUAD OPAMP U304 MOC3012 FOTO U307 UC3842N PWM Klipsch Amplifier Service Manual KSAMM-017 Page 10 RSW-15 Parts List (Power Amp Board) PART VALUE/PART NUMBER KLIPSCH PART # DIODES D301,302,303,304,305,306,307,308,309,310, 311,312,313,314,315,316,317,318,319,320, 321,323,325,330 1N4148T D324 IR HEXFRED HFA08TB60 Z303 1N5242B 12V 500mW ZENER Z301,302 1N5245B 15V 500mW ZENER Z304 1N5240B 10V 500mW ZENER U305 TL431CLP 2.5-37V SHUNT ZENER Klipsch Amplifier Service Manual KSAMM-017 Page 11 RSW-15 Parts List (EMI Filter Board) PART VALUE/PART NUMBER KLIPSCH PART # RESISTORS R23 1.0M Carbon Film 5% Z4 275V 100J .6W Varistor CAPACITORS C3 4700PF 250V 20% CY1 C4,5 0.10F 250V 10% C2 0.22F 250V 10% FX DIODES D5 8A 400V Bridge Rectifier INDUCTORS L1 CHOKE CM YT7271 Klipsch Amplifier Service Manual KSAMM-017 Page 12 RSW-15 Parts List (Power Supply Board) PART VALUE/PART NUMBER KLIPSCH PART #RESISTORS, FIXED R407,410,414,417,419,420,425,426 22 0.6W M F 1% Flame Proof R408,411,415,418 392 1/4W Metal Film 1% R436 3.32K “ R439,440 10 1W Metal Oxide 5% R406,409,413,416 390 “ R402 47.0K “ R429 33.0K 2w Metal Oxide 5% R403 22.0K 1/4W Carbon Film 5% R421 100K 1/2W Carbon Film 5% R433,434 0.0 1/4W CAPACITORS C421,444,446,447 .01F Ceramic 100V 20% C406,408,412,414 4700pF Film 5% C409 0.01F “ C430,435,436,437,438,439,440,449,450 0.1F C415,416,418 47F/50V Electrolytic 20% C422,424 560F/200V C431,434 680F/200V C432,433 820F/200V C441,448 4700pF/250V CY1 DIODES D403,404,406 1N4934 1A 100V Fast Recovery D410 1N4936 1A 400V Fast Recovery D402 DIAC 1A2 60V D411,412 1N4148T D407,408 ULTRAFAST MUR1660CT 8A 600V Z401,403,405,407 1N5242B 500mW 12V 5% Z402,404,406,408 1N5245B 500mW 15V 5% Z409 1N5231B 500mW 5.1V 5% TRANSISTORS Q401 ZTX558 PNP TO92 Q403,404,406,407 IRF740 MOSFET TO220AB (IR ONLY) SURGISTOR TH401 SL154R008 4R 8A 70J