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QSC RMX 2450, Техническое и сервисное руководство

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“QSC” and the QSC logo are registered trademarks of QSC Audio Products, Inc.  1675 MacArthur Blvd.  Costa Mesa, CA 92626

(800) 772-2834  FAX (714)754-6173

www.qscaudio.com

Содержание RMX 2450

Страница 1: ...Technical Service Manual RMX Series RMX 850 RMX 1450 RMX 2450 TD 000098 00 TD 000098 00 Rev B...

Страница 2: ......

Страница 3: ...al 1665 MacArthur Blvd Costa Mesa California 92626 USA E mail tech_support qscaudio com Web http www qscaudio com product information and support http www qscstore com parts and accessory sales RMX 85...

Страница 4: ...tive and barrier strip Output Touch Proof binding posts and Neutrik Speakon COOLING Continuously variable speed fan back to front air flow AMPLIFIER PROTECTION Full short circuit open circuit thermal...

Страница 5: ...16 5 1 Mechanical disassembly and re assembly 16 6 Replacement parts 17 6 1 RMX 850 Replacement Parts 17 6 2 RMX 1450 Replacement Parts 20 6 3 RMX 2450 Replacement Parts 23 7 Schematics and diagrams 2...

Страница 6: ...th common tools and equipment such as tweezers solder braid and fine tip soldering irons The original factory components are tacked to the board with a spot of glue so you might have to apply some for...

Страница 7: ...component in the correct orientation across the three pads and press it flat against the circuit board with one terminal of the component pressed into the melted solder 3 Hold the component in place...

Страница 8: ...Channel 2 Center Tap 12 5W 2 0 047 F 20 volt tap on the transformer primary To minimize fan noise the fan speed is controlled by varying its actual DC voltage in response to the amplifier s heat sink...

Страница 9: ...105 and D106 arranged as a full wave rectifier Normally the op amp s output signal level is about 1 volt or less which is all it takes to drive the driver transistors But because this point is within...

Страница 10: ...N INVERTING INPUT A V AMP BIAS INPUT B NON INVERTING INPUT B INVERTING INPUT B OUTPUT B BUFFER INPUT B BUFFER OUTPUT B V DIODE BIAS B AMP BIAS INPUT A DIODE BIAS A INVERTING INPUT A OUTPUT A BUFFER IN...

Страница 11: ...2 3 B E C B C E TOSHIBA G D S B C E 2N3904 NPN and 2N3906 PNP Small signal transistors MJE15032 NPN and MJE15033 PNP Driver transistors IRFZ44 TMOS power field effect transistor 2SC5200 PNP and 2SA194...

Страница 12: ...e until about of the amplifier s full AC operating voltage One polarity s drivers and or power transistors NPN or PNP is shorted on one or both channels Individual supply clamp diodes D117 D118 D217 o...

Страница 13: ...loudspeaker when no signal is present RMX 850 and RMX 1450 Check R118 R119 R218 and R219 Excessive current draw with signal present RMX 2450 Check triacs Q113 and Q213 Check D119 D120 D219 and D220 3...

Страница 14: ...0 D202 D203 D205 or D206 Channel 2 are shorted Zener voltage of diodes D107 or D110 Channel 1 or D207 or D210 Channel 2 is too high Current limits properly into short but current is weak at 2 If the o...

Страница 15: ...V 4 1 0 V 9 0 0 d a o l d e t r o h s o t n i t n e r r u c t u p t u O 0 4 1 R 9 3 1 R 1 l e n n a h C 0 4 2 R 9 3 2 R 2 l e n n a h C A 5 4 4 A 5 4 A 9 8 d a o l d e t r o h s g n i v i r d n e h w...

Страница 16: ...detachable headers or inch quick connect tabs that are disconnected by pulling them straight up No unsoldering is necessary 9 Slide the channel modules toward the back so the potentiometer shafts and...

Страница 17: ...30 3A FU T10A 125V 250V 2 F100 F200 5400 0831 0 HEATSINK 1 REF Q3 8910 0273 0 POLYSWITCH 0 15 ohm 1 1A 1 R1 8910 0275 0 THERMAL NTC 30A 1 ohm 1 R21 PCB QZ010C PWR1 Channel 1 module left 153F 223J 5 LQ...

Страница 18: ...C219 153F 224J 5 NLM CM 50V 0 22UF 5 RL 2 C107 C207 153F 332J 5 KW CM 50V 3300pF 5 RL 6x12 2 C217 C218 153R 683J 5 WWM CM 250V 0 068u 5 RL 1 C224 157E 107M 5 KW CE 25V 100uF 20 RL 6x12 2 C105 C205 157...

Страница 19: ...720 332J J RMG 1 10W 3 3K 5 0805 1 R24 4720 393J J RMG 1 10W 39K 5 0805 2 R107 R207 4720 470J J RMG 1 10W 47R 5 0805 1 R224 4720 472J J RMG 1 10W 4 7K 5 0805 2 R114 R214 4720 752J J RMG 1 10W 7 5K 5 0...

Страница 20: ...0 THERMAL NTC 30A 1 ohm 1 R21 PCB QZ020C PWR1 Channel 1 module left 153F 223J 5 LQ CM 50V 0 022UF 5 RL 2 C116 C119 153F 332J 5 KW CM 50V 3300pF 5 RL 6x12 2 C117 C118 153R 683J 5 WWM CM 250V 0 068u 5 R...

Страница 21: ...2 C105 C205 157E 227M 5 PU CE 25V 220uF 20 RL 4 C112 C113 C212 C213 157F 106M 5 LUN CE 50V 10 F 20 RL 2 C106 C206 1804 1040 0 SPRNG COIL 2uH 14gaWIRE 1 L200 2101 1991 0 8 PIN IC SOCKET DIP 2 REF U101...

Страница 22: ...207 4720 470J J RMG 1 10W 47R 5 0805 1 R224 4720 472J J RMG 1 10W 4 7K 5 0805 2 R114 R214 4720 752J J RMG 1 10W 7 5K 5 0805 2 R108 R208 4721 154A 6 RMG 1 8W 150K 1 1206 4 R118 R119 R218 R219 4721 154J...

Страница 23: ...0 POLYSWITCH 0 15 ohm 1 1A 1 R1 8910 0275 0 THERMAL NTC 30A 1 ohm 1 R21 PCB QZ030C PWR2 Channel 1 module right 153F 154J 5 NLM CM 50V 0 15UF 5 RL 4 C108 C109 C208 C209 153F 223J 5 LQ CM 50V 0 022UF 5...

Страница 24: ...Q174 5120 0501 0 FUSE T25A 125V 6 4X32MM 1 F100 8910 0274 0 THERMAL PTC 60C 100 ohm 1 R4 8910 0482 0 TRIAC 600V 40A MAC224A8 1 Q113 8910 0488 0 ROD THERMISTOR NTC 50ohm 1 R134 8910 0494 0 CE 63V 1200...

Страница 25: ...47uF 20 RL 1 C8 157Q 106M 5 IU CE 35V 10uF 20 RL 5x11 1 C271 157R 475M 5 OV CE 250V 4 7u 20 RL 1 C7 1804 1040 0 SPRNG COIL 2uH 14gaWIRE 1 L200 2102 031S 004 3 PIN ST WAFER 1 J257 2102 130S 003 13 PIN...

Страница 26: ...2J J RMG 1 10W 4 7K 5 0805 4 R274 R279 R287 R293 4720 473J J RMG 1 10W 47K 5 0805 1 R283 4720 474J J RMG 1 10W 470K 5 0805 2 R272 R285 4720 592A J RMG 1 10W 5 9K 1 0805 2 R271 R284 4720 750J J RMG 1 1...

Страница 27: ...IMENSIONS ARE IN INCHES TOLERANCES ARE DECIMALS DECIMALS ANGLES xx 02 xxx 010 1 2 DEBURR EDGES XXX R MAX TOROID SWITCH SCREW PWR CONNECTOR SCREW 2 REQD NOTES UNLESS OTHERWISE SPECIFIED THIS DRAWING US...

Страница 28: ...THE PROPERTY OF QSC AUDIO PRODUCTS THAT MAY NOT BE DISCLOSED REPRODUCED OR USED WITHOUT EXPRESS WRITTEN CONSENT FROM QSC AUDIO PRODUCTS 7 2 RMX Assembly Disassembly Diagram 2 of 2 All models CHANNEL M...

Страница 29: ...1 2 J203 2 3 J203 3 A1 FILT BYP A FILT SEND A FILT CAP A SW TO GND FOR CLIP LIM 5 J1 5 GND 4 J1 4 6 J1 6 7 J1 7 C103 180p 5 C_0805 4 J203 4 5 J203 5 6 J203 6 7 J203 7 26 LINE RIBBON CABLE CONNECTS BR...

Страница 30: ...5 CW CCW W R212 10K A1 R202 1K R_0805 F_SND_B F_30_B F_BYP_B IN_B IN_B SEE SH 1 SEE SH 1 C201 180p 5 C_0805 C203 180p 5 C_0805 C206 10 50NP 3 2 1 NE5532 U201 1 C207 22 5 A1 R216 390K R_1206 C210 56p C...

Страница 31: ...J6A COIL TWO COIL ONE BLU BLK GRY RED 0V 20V 120V QUICK CONNECT PC MTD TABS 0 22 200V C227 2 AC1 1 4 3 AC2 BR200 400V 25A E16 E15 E8 E7 E6 E5 F200 10A 125V RECTIFIERS BR100 200 AND C127 227 ARE LOCAT...

Страница 32: ...LIP LIM 5 J1 5 GND 4 J1 4 6 J1 6 7 J1 7 C103 180p 5 C_0805 4 J203 4 5 J203 5 6 J203 6 7 J203 7 26 LINE RIBBON CABLE CONNECTS BREAKAWAY INPUT PCB TO MAIN PCB ROUTE THIS GROUND TO P GND AT HEAT SINK COM...

Страница 33: ...W R212 10K R205 10 0K R_0805 R200 10 0K R_0805 R201 10 0K R_0805 R206 10 0K R_0805 10K LINEAR 3B RIGHT ANGLE POT SEE SH 3 15V_B R216 500K R_1206 R213 270 R_0805 C210 56p C_0805 A1 C207 22 5 R226 47K...

Страница 34: ...IL TWO COIL ONE BLU BLK GRY RED 0V 20V 120V QUICK CONNECT PC MTD TABS E5 E6 E7 E8 E15 E16 2 AC1 1 4 3 AC2 BR200 400V 25A 0 22 200V C227 F200 12A 125V E1 E2 E3 E4 E13 E14 2 AC1 1 4 3 AC2 BR100 400V 25A...

Страница 35: ...T CABLE CHANNEL 1 GAIN SPEAKER BUS BEFORE FUSE R20 3 3 1W R_RES1W R105 10 0K R_0805 C111 27p 200V COG C_1206 3 2 1 NE5532 U101 1 C106 47 10NP A1 A1 P1 15V_A R166 464K R_1206 D104 1N4148 D_SOT 23 Q101...

Страница 36: ...C212 220 25V 6 J204 6 6 J104 6 P1 75 R_0805 R224 C214 C_1206 0 0015u 250V 5 R216 820K R_1206 C211 27p 200V COG C_1206 15V_B R277 12K 1W YELLOW LD201 5 J204 5 5 J104 5 R225 4 7K R_1206 R266 464K R_120...

Страница 37: ...ONNECT PC MTD TABS U I CORE POWER TRANSFORMER NOTE SPLIT SECONDARY WIRING FROM EACH LEG TO EACH CHANNEL E3 E6 E4 BLU 2 AC1 1 4 3 AC2 BR100 400V 25A 0 22 250V C128 2 AC1 1 4 3 AC2 BR101 400V 25A C127 0...

Страница 38: ...AUDIO PRODUCTS MAIN PCB 1724 330A 0001 E100 E101 E200 E201 26 CONDUCTOR RIBBON CABLE WITH PIN TO PIN INTERCONNECTS J203 1 26 J1 1 26 INPUT PCB 1724 340B 0102 INPUT PCB WIRE ASSY E9 E10 E212 E11 E12 1...

Страница 39: ...UDIO PRODUCTS MAIN PCB 1724 330A 0001 E100 E101 E200 E201 26 CONDUCTOR RIBBON CABLE WITH PIN TO PIN INTERCONNECTS J203 1 26 J1 1 26 INPUT PCB 1724 340B 0102 INPUT PCB WIRE ASSY E9 E10 E212 E11 E12 1 2...

Страница 40: ...ED REPRODUCED OR USED WITHOUT EXPRESS WRITTEN CONSENT FROM QSC AUDIO PRODUCTS MAIN PCB 1724 332A 0003 E100 E101 E200 E201 26 CONDUCTOR RIBBON CABLE WITH PIN TO PIN INTERCONNECTS J203 1 26 J1 1 26 INPU...

Страница 41: ......

Страница 42: ...QSC and the QSC logo are registered trademarks of QSC Audio Products Inc 1675 MacArthur Blvd Costa Mesa CA 92626 800 772 2834 FAX 714 754 6173 www qscaudio com...

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