Service manual

ManualsBrandsQSC ManualsStereo AmplifierQSC PLX 1202

Technical Service Manual

PLX™ Series

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▲ PLX 1202

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▲ PLX 1602

▲▲

▲ PLX 2402

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▲ PLX 3002

TD-000078-00

Summary of content (83 pages)

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Technical Service Manual PLX™ Series ▲ PLX 1202 ▲ PLX 1602 ▲ PLX 2402 ▲ PLX 3002 TD-000078-00 TD-000078-00
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+ PLX 1202 + PLX 1602 + PLX 2402 + PLX 3002
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PLX SERIES SERVICE MANUAL PLX 1202 PLX 1602 PLX 2402 PLX 3002 QSC Technical Services Wats: I -%OO-772-2034 Local: 1-714-957-7150 Fax: 1-714-754-6173 QSC Technical Support BBS I -714-668-7567 1-800-856-6003 QSC Audio Products, Inc. 1675 MacArthur Blvd. Costa Mesa, CA 92626 http://www.qscaudio.
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Table of Contents PLX Product Specifications ................................................................ 1 Introduction ........................................................................................ 2 Test and Calibration ............................................................................ 3 Troubleshooting PLX ........................................................................... 13 PLX Parts List PLX 1202 PCB Assembly (120V) .............................................
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PLX Product Specifications PLX 1202 PLX 1602 PLX 2402 PLX 3002 PLXI 202 PLXI 602 PLX2402 Output Power (per channel): Continuous Average Output Power both channels driven: 8 ohms, 2OHz - 2OkHz, 0.03% T H D 200 watts 300 waKs 425 watts 4 ohms, 2OHz - 2OkHz, 0.05% T H D 325 watts 500 watts 700 watts Con0nuous Average Output Power bridged mono ooeration: 8 ohms, 2OHz - 2OkHz, 0.1% THD 700 iatts 1100 watts 1500 watts Voltage Gain (dB) 32 32 32 1.00vrms 1.20 Vrms 1.
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I n t r o d u c t i o n This manual is prepared to assist service personnel with the repair and calibration of PLX power amplifiers . The procedures described in this manual require advanced technical experience and sophisticated audio test equipment. CAUTION: To reduce the risk of electric shock, do not remove the cover. No user-serviceable parts inside. Refer servicing to qualified personnel. CAUTION WARNING: To prevent fire or electric shock, do not expose this equipment to rain or moisture.
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T e s t & C a l i b r a t i o n PLX 1202 Test Procedure . SET-UP 1. Connect a test load to the output terminals of the amplifier. 2. Make sure Mode Switches 1 - 10 are in the default position (1 on, 10 on, all others off). 3. Connect a distortion analyzer with a resolution of O.Ol%, 20-2OkHz (or better) to the output terminals of the amplifier. Enable the 8OkHz low pass filter. 4.
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5. Turn power off and place the amplifier back into the Stereo mode with output loads connected to each channel. . BIAS 1. Let the amplifier cool down to room temperature. 2. With an input amplitude of 1.3OVrms increase the input frequency to 2OkHz. Reduce the input signal 20dB (80%) from full output. Adjust the crossover trimpot VR43 (CHl) and VR166 (CH2) for about a 4OOmVpk-pk crossover spike protruding from the noise trace on the oscilloscope.
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4. Verify that the NTC circuit causes thermal shutdown after an extended period. 5. When thermal shutdown occurs, verify AC idle current of less that 0.90 amperes l l l CM TEST 1. Select an 8 ohm load and confirm that this amplifier is producing rated power. 2. Check the Common Mode of the amplifier by inserting a 1/4” input jack halfway into each channel and observe about 6 dB of output voltage reduction. There will also be a 180 degree phase inversion at the output of the channel under test.
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3. Turn the power switch off and on a few times to verify the 3 second power-up muting delay. . CHANNEL OUTPUT 1. Look for amplified signal on the scope for channel 1. Switch the input signal and scope to channel 2 and repeat output test. Check for noisy / contaminated gain pots by observing general instability on the distortion waveform while adjusting the gain control levels. 2. Select an 8 ohm load and confirm that this amplifier is producing 300 watts at 1 kHz just below the point of clipping.
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l l l l FREQUENCY RESPONSE I. Set load to 8 ohms and scale the input generator to gain 1 watt of power from the amplifier on each channel. Gain controls on the amplifier should be fully up. 2. Check frequency response from 2OHz to 20kHz (+I- 0.2OdB) by sweeping random frequencies between these extremes. This is done by verifying the same voltage amplitude at each of the frequencies selected (within 2OHz to 20kHz). Check both channels. POWER vs. DISTORTION TEST 1.
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3. Connect a distortion analyzer with a resolution of O.Ol%, 20-20kHz (or better) to the output terminals of the amplifier. Enable the 80kHz low pass filter. 4. Connect a dual-channel oscilloscope to the following test points: Chl - a 1OX (vertical sensitivity - 2V/cm) scope probe to the channel speaker output. Ch2 - a IX scope probe (vertical sensitivity - 0. IV/cm) to the distortion analyzer output. 5. Set amp gain pots fully clockwise and turn on power switch. 6.
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disable the 80kHz lowpass filter on the analyzer for this test. Further trim so that the total distortion for that channel is less than 0.1% THD+N, 3. With the trim settings achieved, and with no signal plugged into the amplifier and with an 8 ohm load, verify that the AC idle current from the AC service is no more than 1 .O amperes. 4. Let the amplifier cool down and check channel 2. l l l l l SHORT CIRCUIT CURRENT 1. Select a 2 ohm load and apply a 1.
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l l OUTPUT NOISE 1. Set the amplifier gain controls all the way up, with a I kHz 1.5OVrms sinewave input signal. Note the output level at full power just below clipping. Adjust gain if needed. 2. Remove the input signal connector from the amplifier and measure the residual noise level produced into the load by the amplifier. The noise signal should be 107 dB down from the full output power point measured. A signal to noise ratio should be better than or equal to 107dB. Check both channels.
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2. Select an 8 ohm load and confirm that this amplifier is producing 550 watts at 1 kHz just below the point of clipping. Check both channels. l l BRIDGE MODE 1. Turn the power switch off. 2. Set Mode Switch #7 in the on position. The gain control, limiter, and filter switch positions on CH2 are disabled with Mode Switch # 7 on. 3. Set load to both red output binding posts (CHI positive and CH2 negative). 4. Apply a 1.30 VRMS, 1 kHz sinewave input to channel 1 of the amplifier.
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l l l l l 12 POWER vs. DISTORTION TEST 1. Check to ensure that both channels will produce rated power at 2OH2, 2KHz, and 20kHz. into an 8 ohm load. 2. While verifying rated power, check that at all frequencies the distortion measurement is less than or equal to 0.03% THD. THERMAL TEST I. Set input frequency to 1 KHz and short both channels while they are producing power into a load. 2. Apply a short to the output of each channel. 3. AC line current draw should be about 11 - 13.
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T r o u b l e s h o o t i n g PLX 1202 l PLX 1602 l PLX 2402 l PLX 3002 Power Supply - - Replacing Blown IGBTs. In order to improve EMI performance, reduce cost, and increase current capacity, the PLX IGBTs are driven by an active, direct coupled integrated circuit, rather than a gate drive transformer.
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Troubleshooting “TOP-210” Bias Supply. QUICK TEST OF BIAS SUPPLY. Ramp the AC voltage up slowly to 25% of regular voltage (30V for 12OV unit). If the bias supply is working normally, the green “power” LED should come on between 30 and 35V, with its usual, steady “half-brighf’ start-up level. CAUTION: if the LED comes on at 2OV, or not until 5OV, or blinks, DO NOT RAISE VOLTAGE PAST 60V until you have measured the bias voltage.
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CHECK EMITTER AND BASE RESISTORS WHILE DEVICES ARE REMOVED, Each output transistor has an associatated pair of 0.47 ohm resistors in parallel. Each BANK of output transistors has a 15 ohm resistor from base to rail (emitter bus). Audio Outputs, Troubleshooting Current Limit WEAK CURRENT LIMIT -- PREMATURE CLIPPING. The usual symptom of weak output current is premature clipping of one or more peaks of the audio voltage. This could be caused by missing step, weak current limit, or dead output section.
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Audio Power Stage, Current Limit Troubleshooting CURRENT LIMITS WHICH COLLAPSE PREMATURELY. An immediate collapse of ALL current limits at full power could be premature triggering of “Power Supply Cutback”, which is described in the section below. Cutback after several seconds of full power operation at two ohms is normal. Cutback of one or more output sections, at full temperature, while approaching full power into two ohms is also normal.
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CLAMPING VOLTAGE DECREASES, BUT NO CURRENT CUTBACK CHANNEL-POLARITY Measure voltage on: Check clamp transistor CH I+ c21 Q18 CH lc22 Q23 CH 2+ C56 Q63 CH 2C5? Q68 If the measured voltage on the clamp capacitor is not decreasing to about 50% during the short, check the circuitry which measures the current during short circuit, CLAMPING VOLTAGE DOES NOT DECREASE TO 50% DURING SHORT.
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Audio Output, Troubleshooting Stability Feedback HIGH FREQUENCY OSCILLATIONS SEVERE-DRAWS CURRENT-GROSS DISTORTION C27 (62) missing or wrong, or series R367 (368) C 25, 26 (60, 61) missing Secondary filter capacitors missing or open (unlikely that ALL are defective). SEVERE, BUT DOES NOT DRAW LARGE CURRENT R22 (146) open.
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CLIP LIMITING DOESN’T WORK: BOTH CHANNELS: Check U3 missing, Check U3 supply voltages, +I 3VCL, -13VCL, on C73* 74 ONLY ONE CHANNEL BAD: Probe output of U2 (7), pin 7 while clipping. If output exceeds 4V during clipping, check : R38 (161) missing. R38-39 (161-162) have wrong values. Q9, 10 (54, 55) missing. R34 (157) or R35 (158) missing Q8 (53) missing If output at pin 7 clamps at 3.5.
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Step Chattering. If the step repeatedly switches on and off, usually at a low frequency, it creates an oscillation burst which increases step glitch at low frequency. The tendency is usually worse at low impedances and low frequencies. 2-3 “false trials” at very low frequency, 2 ohms, is normal, but prolonged bursts of maximum frequency chattering may cause FET failure. Positive step: check hysteresis resistor R66 (RI 89) Negative step: check hysteresis resistor R69 (RI 92) and capacitor Cl 87 (Cl 93).
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FET Turns On or Off Very Slowly: Generally causes problems at high frequency, 2 ohms. If both slopes are equally slow, check the slope capacitors: Positive, C30 (035) and Negative, C29 (034). If only one slope is slow, check the resistors and buffer transistors: Positive step: R78, 79, Dl5, Q30-31 (R201, 202, D40, Q75-76) Negative step: R83, 84, Dl7, Q32-33 (R206, 207, D42, Q77-78). Severe Step Oscillation. Generally observed at low frequency, low impedance, right at threshold.
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Fan Speed Troubleshooting FAN STUCK HIGH: Q88 or Q89 failed R30 or Rl55, Thermal Sense NTC, shorted to heatsink R266 or R271 missing. FAN DOESN’T RUN Check fan voltage, should be 1 IV when cold, 29V when hot. Voltage OK -- replace fan. No Voltage: check Q91, 89, 90, R264 and 265 missing. Confirm that +/-15V is reaching circuit.
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PLX 1202 PCB ASSEMBLY (12OV) Cont’d PLX 1202 PCB ASSEMBLY (12OV) Part Number Description Reference c14,49 CA-01 0002-30 CAP 1 OPF 5% 50V 0805 SMT Cl6,50 CA-01 5002-10 CAP CER 15PF 10% 5OOV SL CA-I 10002-30 CAP CER 1 OOPF 5% 5OV NPO SM C40,41,43, C5,6,9,18, c53 Cl45,146 CA-I 33001-10 CAP SM 330PF 5% 500V CA-I 47003-30 CAP 470PF 5% 5OV 1206 SMT Cl,2,4,17, c119,121, Cl48,181, Cl82,186, Cl88 C26,36,37, C52,61, CA-168003-30 CAP CER 68OPF 5% 5OV NPO SM C25,60 CA-21 0005-30 CAP ,001 LJF 5% 5OV 1206 SMT Cl20,12
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PLX 1202 PCB ASSEMBLY (12OV) Cont’d PLX 1202 PCB ASSEMBLY (12OV) Cont’d Part Number Part Number Description Description Reference Q70,89,90, Q92,93,95 Ql-4,6,10, QD-000104-30 XISTOR PNP SMT 40V .2A .2W Ql2,14,23, Q24>42143, Q44-48,51, Q55,57,59, Q68,69,87, Q88,94,98, Q99 QD-000105-30 XISTOR NPN SMT 300V .2A .2W Ql6,61 QD-000106-30 XISTOR PNP SMT 300V .2A .2W Ql7,62 QD-000108-30 DIODE SMT SWITCH 200V .2A 50 Dl3,16,38, D41,61,68, D78,79 QD-0001 lo-30 DIODE ZNR 6.2V 5% .
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PLX 1202 PCB ASSEMBLY (12OV) Cont’d PLX 1202 PCB ASSEMBLY (12OV) Cont’d Part Number Reference Part Number Description Rl34,139, Rl4,16,19, Rl42,169, Rl88,199, R200,241, R245,259, R329,337 R46,65, R76,77, Rl48,168, R25,45, R262,365 WC-0001 18-00 WIRE ASSY, BLK, LONG Rl72,173 R49,50, R31,153 Rl8,141, R229,242, R244,271~ R331,346 R325 R351,352 Rl43,183, Rl84,243, R20,60,61, R261,323, R332 R26,149 R156 R33,119, Rl76,196, Rl97,268, R341-345 R51,53>73, R74> 174, R333,335 R24,145, R260,263, R340 R321,322, R
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PLX 1202 PC6 ASSEMBLY (230V) Cont’d PLX 1202 PCB ASSEMBLY (230V) Cont’d Part Number Description Part Number Description Reference QD-000062-10 QD-000063-10 QD-000076-00 QD-000077-00 QD-000102-30 XISTOR NPN TO-92 40V 0.2A 1.5 XISTOR PNP TO-92 40V 0.2A 1.
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PLX 1202 PCB ASSEMBLY (230V) Cont’d PLX 1202 PCB ASSEMBLY (230V) Cont’d Part Number Description Part Number Description Reference RE-156001-10 RES 5.6OK .
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PLX 1202 PCB ASSEMBLY (230V) Cont’d PLX 1202 CHASSIS ASSEMBLY (230V) Part Number Description Part Number Description Reference SW-000029-S RELAY, SPKR PROTECT,SPDT,2 Kl SW-000053-00 SWITCH DIP IO-POS, TALL SW1 WC-0.2020-JW JMPR BARE 0.2” 20AWG SLD D22,46,47 REF:D21, WC-O 5018-JW JMPR INS 0.5” 18AWG SLD WHT J240, REF:D87,88 WC-000001-10 JUMPER INS .
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PLX 1602 PCB ASSEMBLY (12OV) Cont’d PLX 1602 PCB ASSEMBLY (12OV) Cont’d Part Number Description Part Number Description Reference Cl56,157 C28,63, CA-410006-30 CAP CER .lUF 10% 5OVX7R SMT Cll6,125, c135155, Cl62,163, cl79,lao, cia3,185, cla9,190, c19,39,54, Cl91 CA-410011-00 CAP MMYL .lUF 10% 400V ClO7,123 CA-422001-10 CAP MYLAR .22UF 5% 5OV c10,45 CA-447001 -00 CAP MET POLY X.
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PLX 1602 PCB ASSEMBLY (12OV) Cont’d PLX 1602 PCB ASSEMBLY (12OV) Cont’d Part Number Description Part Number Description Reference QD-001302-PN XISTOR PNP TO-3P 200V 15A Q28_34136> Q39,73,79> Q81,84 QD-003281-NP XISTOR NPN TO-3P 200V 15A Q29,35,37, Q40,74,80, Q82,85 QD-004744-ZA DIODE ZNR 15V 5% 1 W 1 N4744A D53,54 QD-005402-DX DIODE RECT DO27 200V 3A Dl9,20,44, D45 RE-.04703-10 RES MOFP .
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PLX 1602 PCB ASSEMBLY (12OV) Cont’d PLX 1602 PCB ASSEMBLY (230V) Part Number Descritdion Reference Part Number Description RE-220003-30 RES SMT 2O.
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PLX 1602 PCB ASSEMBLY (230V) Cont’d PLX 1602 PCB ASSEMBLY (230V) Cont’d Part Number Description Part Number Reference Cl59,160, Cl65166, Cl69,170, c173,174 CA-822200-AE CAP LYTIC RL 2200UF 20% 200V Cl32,133, Cl36,137 CH-000102-00 HEATSINK, AUDIO, PLX CH-000103-00 SPRING, CLAMP, 2 HOLE CH-000104-00 HEATSINK PS PLX CH-00011 I-00 BRACKT,OUTPUT PCB PLC PLATFORM CH-000114-00 CLAMP, 2 FINGER PLX CO-000036-CO SPEAKONS, PC MOUNT J7,8 CO-000148-00 CONN XLR F VERT PCB J2,lO CO-000155-00 HEADER PCB ,100 2-POSITIO
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PLX 1602 PCB ASSEMBLY (230V) Cont’d PLX 1602 PCB ASSEMBLY (230V) Cont’d Part Number Part Number Description Reference RE-175002-30 RES SMT7.
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PLX 1602 PCB ASSEMBLY (230V) Cont’d PLX 1602 CHASSIS ASSEMBLY (230V) Part Number Description Part Number Description Reference REF:D87,88 WC-000001-10 JUMPER INS .
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PLX 2402 PCB ASSEMBLY (12OV) Part Number Descridion PLX 2402 PCB ASSEMBLY (12OV) Cont’d Reference CA-01 0002-30 CAP 1 OPF 5% 5OV 0805 SMT c14,49 CA-01 5002-10 CAP CER 15PF 10% 500V SL Cl&50 CA-047002-30 CAP CER 47PF 5% 5OV NPO SMT Cl93 C29,30,64, C65,187, Cl47 CA-1 10001-10 CAP SM IOOPF, 5%, 500V CA-I 10002-30 CAP CER IOOPF 5% 5OV NPO SM C40,41,43, C5,6,9,18, c53 CA-I 33001-10 CAP SM 330PF 5% 500V Cl45,146 CA-I 47003-30 CAP 470PF 5% 5OV 1206 SMT cl ,2>4> CA-I 47003-30 CAP 470PF 5% 5OV 1206 SMT c119,121,
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PLX 2402 PCB ASSEMBLY (12OV) Cont’d PLX 2402 PCB ASSEMBLY (12OV) Cont’d Part Number Part Number Description Description Reference Q86 QD-000042-00 DIODE RECT ULTRAFAST 400V 3 D70,71 QD-000052-00 LED GRN T-l LD2,3,4,7, LD8,9,11 QD-000053-00 LED YEL T-l LDI ,6 QD-000054-00 LED RED T-l LD5,lO QD-000062-10 XISTOR NPN TO-92 40V 0.2A 1.5 Q20,65 QD-000063-10 XISTOR PNP TO-92 40V 0.2A I.
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PLX 2402 PCB ASSEMBLY (12OV) Cont’d PLX 2402 PCB ASSEMBLY (12OV) Cont’d Part Number Part Number Description RE-082001-10 RES MOFP 820 5% 2W MINI RE-I 10006-30 RES SMT 1 .OOK 1% 1/8W 1206 RE-115002-30 RES SMT 1.5OK 1% l/lOW !OOV RE-115002-30 RES SMT 1.5OK 1% l/lOW 1OOV RE-120002-30 RES SMT 2.OOK 1% l/lOW IOOV RE-122103-30 RES SMT2.2lK 1% l/lOW IOOV RE-130102-30 RES SMT 3.OlK 1% l/lOW IOOV RE-139002-10 RES MOFP 3 9K 5% 2W MINI RE-147502-30 RES SMT 4.75K 1% l/lOW IOOV RE-156001-10 RES 5.6OK .
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PLX 2402 PCB ASSEMBLY (12OV) Cont’d PLX 2402 PCB ASSEMBLY (230V) Cont’d Part Number Part Number Descriution Reference WC-0001 17-03 SPEAKER WIRE, BLACK WC-0001 1 a-00 WC-0001 18-01 WC-000118-01 XF-000005-00 XF-000023-00 XF-000061-00 XF-000064-00 XF-000079-00 XF-000085-00 XF-200014-CR EIOA-IOC REF: WIRE ASSY, BLK, LONG EHI-EH2 REF: WIRE ASSY, RED, SHORT ELI-El2OA REF: WIRE ASSY, RED, SHORT BEAD FERRITE W/2OAWG LEAD L7-12 CHOKE COMMON MODE 2.2MH L3,4 INDUCTOR TORIOD 1.
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PLX 2402 PCB ASSEMBLY (230V) Cont’d Part Number Description Reference IC-005532-OP MS-000048-HS MS-I 50250-FU PC-000531 -00 PL-000098-00 PL-000114-00 PL-000117-00 PL-000126-00 PL-000128-00 IC LIN DUAL OP AMP 5532 EX/MP HEAT SINK, ISOL TO-220 FUSE 15A 25OV 3AG FAST CER PCB MAIN PLX INSULATOR, TO-220, PLX INSULATOR, lGBT/RECT HS, PLX INSULATOR, TO-247, PLX SPRING, SEAT, PLX SPACER, LED, .276” U2,7 REF:Q91 Fl PL-000135-00 PL-905156-SP PT-125000-AT PT.
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PLX 2402 PCB ASSEMBLY (230V) Cont’d PLX 2402 PCB ASSEMBLY (230V) Cont’d Part Number Part Number Description RE-010002-30 RES SMT 100 1% l/lOW IOOV RE-015004-10 RES MOFP 150 5% 2W MINI RE-020002-30 RES SMT 200 1% l/lOW 1OOV RE-027401-30 RES SMT 274 1% l/lOW IOOV RE-038301-30 RES SMT 383 1% l/lOW IOOV RE-047001-10 RES MOFP 470 5% 2W MINI RE-047502-30 RES SMT 475 1% l/lOW 1OOV RE-053602.30 RES SMT 536 1% l/lOW 1OOV RE-063402.
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PLX 2402 PCB ASSEMBLY (230V) Cont’d PLX 2402 CHASSIS ASSEMBLY (230V) Part Number Part Number Description CH-000097-00 CH-000100-00 CH-000112-00 LB-000053-00 LB-000077-00 LB-000099-01 LB-00021 5-00 LB-000237-00 LB-160226-01 NW-380801-IL PL-000003-CP PL-000024-00 PL-000040-PL PL-000054-00 PL-000055-00 PL-000056-00 PL-000066-00 PL-000095-00 PL-000096-00 SC-025000-PP SC-060060-PS SC-082051 -PL SW-00001 6.
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PLX 3002 PCB ASSEMBLY (12OV) Part Number DescriDtion PLX 3002 PCB ASSEMBLY (12OV) Cont’d Reference CA-01 0002-30 CAP 1 OPF 5% 5OV 0805 SMT c14,49 CA-01 5002-10 CAP CER 15PF 10% 500V SL Cl6,50 CA-047002-30 CAP CER 47PF 5% 5OV NPO SMT Cl 93 C29,30,64, C65,187, CA-110001-10 CAP SM IOOPF, 5%, 500V Cl47 CA-l 10002-30 CAP CER IOOPF 5% 5OV NPO SM C40,41,43, C5,6,9,18, c53,99,100 CA-133001-10 CAP SM 330PF 5% 500V Cl45,146 CA-I 47003-30 CAP 470PF 5% 5OV 1206 SMT Cl ,2,4,17, c119,121, Cl48,181, Cl82,186, Cl88 C26?
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PLX 3002 PCB ASSEMBLY (12OV) Cont’d Part Number Description PL-000135-00 INSULATOR, MICA 1.25” X 1.75” PL-905156-SP SPACER,ROUND,NYLON,#6,0.155 PT.1 25000-AT RES VAR IT 250 20% 0.15W CAR PT-31 OOOO-CR RES VAR IT 1 OK 20% 0.
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PLX 3002 PCB ASSEMBLY (12OV) Cont’d PLX 3002 PCB ASSEMBLY (12OV) Cont’d Part Number Part Number Description Description RE-015004-10 RES MOFP 150 5% 2W MINI RE-020002-30 RES SMT 200 1% l/lOW 1OOV RE-027401-30 RES SMT274 1% l/lOW IOOV RE-038301-30 RES SMT 383 1% l/lOW IOOV RE-047001-10 RES MOFP 470 5% 2W MINI RE-047502.
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PLX 3002 PCB ASSEMBLY (12OV) Cont’d PLX 3002 PCB ASSEMBLY (230V) Cont’d Part Number Part Number Description Description Reference Reference R335,341, R342,343 R52,54,57, R5a,l75! RE-339201-30 RES SM-r 392K 1% l/lOW IOOV Rl45,la9, RI 92,260, R24,66,69, R263,340 RE-34a702-30 RES MF 4a7K I % 1law I 2 0 6 R321,322, R326,32a RE-375005-BM RES MF 750K 2% 1/2W R339,371 RE-410001-30 R E S SMT 1.
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PLX 3002 PCB ASSEMBLY (230V) Cont’d PLX 3002 PCB ASSEMBLY (230V) Cont’d Part Number Part Number Description Reference Cl.50 C91,92 Cl31 C73,74,76, c771a2>a3t CA-747004-00 CAP LY-rlC RL 470UF 20% 1 OOV Cl 52,153, Cl59,160, Cl65,166, Cl69,170, c173,174 CA-747063-AE CAP LYIC RL 470UF 20% 63V c151.
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PLX 3002 PC6 ASSEMBLY (230V) Cont’d PLX 3002 PCB ASSEMBLY (230V) Cont’d Part Number Part Number Description Reference RE-038301-30 R2543255 R44,167, R274-277> R279_280 Rl51,160, R28,37? R291 r294 R22,146, R361 s374 R370 R257 R282,287 Rlq7542g Rll7,lla, Rl28,165, R232,250, R252,369 RlOl,lO9, Rl47,154, Rl57,158, Rl62,164, R23,32,34, R270>273, R297-300 R35,39,41, R310,311 RI71 R48,127, Rl95,198, R207,240, R264,265, R267,306, R30?,347_ R348 R47~72~75~ R84,170, R79,202 R219,22a, R251 R96,105, Rll,l7,40, Rl
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PLX 3002 PCB ASSEMBLY (230V) Cont’d PLX 3002 PCB ASSEMBLY (230V) Cont’d Part Number Reference Part Number Description Rl20,132, Rl40,161 RI 5j3ab R360 R25a,266, R272 Rl21,305, R336,33a, R363,366, R375j376 RlO6,133, Rl34,139, Rl4,16,19, Rl42,159, Rl6a,l69, Rlaa,227j R241.245, R259,329, R337 R36,45,46, R65,104, R25,14a, R262,365 R31,153 Rla,l41, R229,242, R244,271, R2al,303, R304,331, R346 R325 R351,352 Rl72,173 RE-348702-30 RES Description RE-175002-30 RES SMT 7.
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PLX 3002 CHASSIS ASSEMBLY (230V) Part Number Description Reference CH-000097-00 CHASSIS, PLX CH-000100-00 HANDLE-EAR CASTING PLX CH-000112-00 SHIELD, AC, PLX LB-000053-00 LBL, FRENCH, FUSE REPLACEMENT LB-000077-00 LABEL,WARNlNG,HlGH ENERGY LB-000099-01 LABEL, CE LISTING LB-000213-00 LABEL, FACEPLATE PLX 3002 LB-00021 5-00 LABEL, INPUT/OUTPUT, PLX LB-160226-01 LABEL, FUSE, UL CAUT. 15A 250V NW-380801.IL 3/8” INTERNAL TOOTH LOCKWASHER PL-000003-CP AC CORD PROTECTOR PL-000024-00 STRAIN RELlEF,LiQ.
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PLX Series Semiconductor Identification TMOS FET DRIVER TRANSISTORS , 43 2SC4793 NPN I2SAl837 PNP lRFZ44 TMOS Power Field Effect Transistor ’ G -6 0 lRFZ4l AZ !? BCE G D S OP-AMP NE5532AN Dual Operational Amplifier POWER TRANSISTORS 2SC3281 NPN I2SAl302 PNP l OP-AMP TL072 Dual Operational Amplifier C E SMALL SIGNAL TRANSISTORS 2N3904 NPN I2N3906 PNP C 50
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PLX Series Semiconductor Identification TIMER LM556CM PWM Switch Dual Timer PWM MOSFET Gate Driver OP-AMP OP-AMP LMI 3600 Dual Transconductance Operational Amplifier COMPARATOR Voltage Comparator LM311 TOP21 0 MC33078 Dual Low Noise Operational Amplifier OPTO-ISOLATOR Moc8lol Gallium Arsenide LED Coupled to Phototransistor.
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PLX Series Semiconductor Identification IGBT lRG4PC5OU PLX2402, PLX3002 insulated Gate Bipolar Transistor IGBT lRG4PC4OU PLXI 202, PLXl602 Insulated Gate Bipolar Transistor c c lx k n-channel PWM SG3525AN Regulating Pulse Width Modulator G HIGH/LOW SIDE DRIVER vss IGBT DRIVER LM393NE Low Power Dual Comparators 52 E lR2110 High Speed MOSFET I IGBT Driver VDD HIN SD LIN COMPARATOR ‘2 COMPARATOR SOIC Quad Comparator VB HO vs vcc LO COM Logic supply Lcmic imul hiah side Lo& it-&l fo; shutdo
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,.“..ce,c SCREW, #8 X 5/16’L 7 3 REQD - - - cCREW, #6-32 X RECQ HANDLE-EAR 2 REDO KNOB J 2 REW FACEPLATE LABEL CHASSIS ASSEMBLY l H E X N U T (NW-3BOBO3-HN) P A R T O F 1/4- P H O N E J A C K O N ITEM 3 9 ( P C B A S S Y ) . 1. THIS DRAMNG U S E D I N C O N J U N C T I O N %lTH S C H E M A T I C DWGs M A I N P C B A S S Y S H - 0 0 0 5 4 1 - 0 0 , WRING D I A G R A M S H - 0 0 0 5 4 0 - 0 0 A N D F I N A L A S S Y FG-000540-XX. MEW A-A 3/6* L.
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H z ----------_-_-_-_- Fi G g u
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Q 55
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PLX MAIN MOOULE ASSEMBLY smm, +6-20 Y 5/r I_ 1.
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8 7 6 5 4 3 2 1 THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION WHICH IS THE PROPERTY OF QSC AUDIO PRODUCTS, THAT MAY NOT BE DISCLOSED, REPRODUCED OR USED WITHOUT EXPRESS WRITTEN CONSENT FROM QSC AUDIO PRODUCTS.
PAGE 62
7 6 7 J5:7 N120 J6:7 7 58 7 6 R113 .47-2W 8 PL R111 R107 N76 1N5402 D19 C129 .1-250V N82 2+ J7 FROM CH B SHEET 3 BR-NEG N462 2- E10B 1+ E10A 1- E9B JACK-SPEAKON R93 15-2W 15-2W BR-POS N461 E9A N86 R90 C28 .1-250V R87 470pF ^C_1206 C26 15-2W N466 680pF ^C_0805 C25 100 ^R_0805 N74 R102 N70 N77 N79 D10 P PWR-GND, TO SUPPLY CT P1 E10C 4148 ^D_SOT-23 2SC3281 2SC3281 2SC3281 SH-001203-00 N108 .47-2W 8 PL R103 N105 R92 15-2W R89 N107 N103 DWG NO.
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INPUT AND FILTER SECTION, CH B R149 10 9 P N258 J6:9 N259 7 6 N220 R236 .47-2W 8 PL 1N5402 D44 N219 R234 R230 N218 R225 N217 R214 R208 15-2W R211 R204 274 ^R_0805 N215 R216 2+ N228 J8 2- E12B N464 JACK-SPEAKON E12A 1+ E11B N229 15-2W .1-250V C134 E11A 1- .1-250V R210 15-2W E11C 5.6-2W R213 C63 N467 680pF ^C_0805 15-2W SPKR-B R203 5.6-2W P P1 BR-POS TO CH A SHEET 2 N465 BR-NEG E12C D38 DWG NO. 1N5402 2SC3281 .
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8 7 THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION WHICH IS THE PROPERTY OF QSC AUDIO PRODUCTS, THAT MAY NOT BE DISCLOSED, REPRODUCED OR USED WITHOUT EXPRESS WRITTEN CONSENT FROM QSC AUDIO PRODUCTS. 6 5 4 3 SH 2 +11V N282 P1 N287 PLC-2 USES MID RAILS ONLY +11V +MID-RAIL C76 SPKR-A TO PWR SUPPLY C-T DP - STBY SEE SH 2 CH A V-MON, I-MON NEGREF N324 I-MON CH A (WITH SEPARATE CH A THERMAL SUBCODE) OUTER COIL, 6T D88 JUMPER D L-Z_A1 N469 N69 N323 N327 TO OPTOCOUPLER LED 1.
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VDD 12 9 11 OUTA RT COMP 6 7 8 SFT-SRT SG3525AN PRI_LO N402 5 SHTDWN DISCHG 9 PRI_LO N403 R364 100 ^R_0805 C184 PRI_LO PARALLEL WINDING ON RESONANT INDUCTOR PRI_LO R362 4.75K ^R_0805 R366 LM556-SMT COMP FLIP-FLOP 10.0K ^R_0805 10.0K ^R_0805 R363 C182 C181 470pF-50V-5% ^C_1206 COMP THRESHOLD U14:1 1 DISCHARGE B DWG NO. +15V U17 NC 3 NC V-STBY TO SH 4 6 SH-001203-00 C156 .1-250V 100-25V-105C C149 39.
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8 7 6 5 4 3 2 THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION WHICH IS THE PROPERTY OF QSC AUDIO PRODUCTS, THAT MAY NOT BE DISCLOSED, REPRODUCED OR USED WITHOUT EXPRESS WRITTEN CONSENT FROM QSC AUDIO PRODUCTS. 1 REVISION REV DESCRIPTION EFF.
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7 6 7 J5:7 N120 J6:7 7 7 6 R113 .47-2W 8 PL R111 R107 N76 N74 R97 R102 N73 D19 C129 .1-250V N82 E9C BR-POS 2+ 2- FROM CH B SHEET 3 BR-NEG N462 JACK-SPEAKON E10B 1+ E10A 1- E9B J7 15-2W R93 15-2W EMI_G N461 E9A N86 R90 C28 .1-250V R87 470pF ^C_1206 C26 15-2W N466 680pF ^C_0805 C25 100 ^R_0805 100 ^R_0805 5.6-2W P PWR-GND, TO SUPPLY CT P1 E10C B 2SC3281 2SC3281 2SC3281 2SC3281 .47-2W 8 PL SH-000516-00 N108 R114 N105 R99 R95 R92 R86 DWG NO.
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INPUT AND FILTER SECTION, CH B R149 10 9 P N258 J6:9 N259 -13VCL 64 7 6 1N5402 D44 R216 15-2W J8 2+ E12B N464 JACK-SPEAKON E12A 1+ E11B 2- E11C E11A N229 R213 C63 SPKR-B 5.6-2W .1-250V R210 15-2W EMI_G 1- N228 R221 R368 .1-250V C134 2 R203 5.6-2W P P1 BR-POS TO CH A SHEET 2 N465 BR-NEG E12C 4148 ^D_SOT-23 DWG NO. N248 .
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5 4 3 V-MON CONVERSION SCALES: PLC-2: (sim to 1.4) 30.1K / 2.00K = 15.05 Vout/Vmon PLC-3: (between 1.8, 2.0) 33.2K / 1.5K = 22.13 Vout/Vmon +HI-RAIL +14VIC P1 N287 PLC-2 USES MID RAILS ONLY +11V C76 -15V R276 820-2W R277 820-2W N284 R278 39.2 ^R_1206 R249 -11V 820-2W R224 0.7 JUMPER C191 .1-50V ^C_1206 C77 470-16V C74 39.
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N393 VDD 10 12 9 11 CT OUTA RT COMP .1-50V-10% ^C_1206 6 7 8 SG3525AN PRI_LO N402 5 SFT-SRT PRI_LO N403 R364 100 ^R_0805 PRI_LO PRI_LO 4.75K ^R_0805 R362 -MID-RAIL N433 C182 10.0K ^R_0805 R366 LM556-SMT COMP FLIP-FLOP THRESHOLD U14:1 1 COMP N427 R363 CONTROL_V DISCHARGE 470pF-50V-5% ^C_1206 2 C181 200V-15A RESET B -HI-RAIL U17 NC DWG NO. +15V NC V-STBY TO SH 4 6 SH-000516-00 .1-250V C156 100-25V-105C C149 39.2 ^R_1206 NEW, LO-ESR, 2PL SH .
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8 7 6 5 4 3 2 1 THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION WHICH IS THE PROPERTY OF QSC AUDIO PRODUCTS, THAT MAY NOT BE DISCLOSED, REPRODUCED OR USED WITHOUT EXPRESS WRITTEN CONSENT FROM QSC AUDIO PRODUCTS.
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6 N120 7 N77 D18 C32 100-25V 3.9K-2W R113 .47-2W 8 PL D19 N76 1N5402 N74 R111 R107 R102 R97 C129 .1-250V R93 N82 FROM CH B SHEET 3 BR-NEG N462 2+ J7 15-2W 2- E10B JACK-SPEAKON E10A 1+ E9B N86 15-2W BR-POS N461 E9A 1- .1-250V 15-2W R87 EMI_G E9C 5.6-2W R90 C28 N466 680pF ^C_0805 470pF ^C_1206 C26 75 ^R_0805 R105 3.
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J6:10 11 10 N258 J6:9 9 N259 7 6 N175 D43 C51 100-25V D44 1N5402 R236 .47-2W 8 PL N219 R234 N218 R230 R225 N220 R228 3.9K-2W R219 R220 R217 R208 R214 N217 N228 E12B J8 15-2W R216 15-2W 2+ E12A N229 2- E11B N464 JACK-SPEAKON E11A 1+ E11C 1- .1-250V EMI_G SPKR-B 5.6-2W R213 R210 15-2W R368 .1-250V C134 2 R221 C63 C60 L2 1 2UH-14GA-AIR 15-2W C E10 D N227 P P1 BR-POS TO CH A SHEET 2 N465 BR-NEG E12C D38 4148 ^D_SOT-23 DWG NO. 1.
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8 7 THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION WHICH IS THE PROPERTY OF QSC AUDIO PRODUCTS, THAT MAY NOT BE DISCLOSED, REPRODUCED OR USED WITHOUT EXPRESS WRITTEN CONSENT FROM QSC AUDIO PRODUCTS. 6 5 4 3 SH 2 SEE SH 2 CH A V-MON, I-MON N324 I-MON CH A (WITH SEPARATE CH A THERMAL SUBCODE) OUTER COIL, 6T D88 10V-1N4740A D L-Z_A1 N469 N69 N323 N327 N325 N297 -IN_CH-A N298 +A -A D57 C67 A1 N329 -IN_DPA N293 D 100K ^R_1206 N359 N346 R273 6.2V-.3W ^D_ZEN_SOT-23 2.
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VDD 12 9 11 8 HO CT OUTA RT 6 7 SHTDWN DISCHG 9 COMP 8 SFT-SRT SG3525AN PRI_LO N402 5 N403 R364 100 ^R_0805 C184 PRI_LO PRI_LO 1 U17 NC 6UH-BEAD L12 1 4.75K ^R_0805 R362 R366 10.0K ^R_0805 LM556-SMT COMP FLIP-FLOP CONTROL_V THRESHOLD U14:1 1 DISCHARGE C182 470pF-50V-5% ^C_1206 C181 470pF-50V-5% ^C_1206 470-63V C175 C171 470-63V C167 470-63V 470-63V RESET COMP 7.
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8 7 6 5 4 3 2 1 REVISION THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION WHICH IS THE PROPERTY OF QSC AUDIO PRODUCTS, THAT MAY NOT BE DISCLOSED, REPRODUCED OR USED WITHOUT EXPRESS WRITTEN CONSENT FROM QSC AUDIO PRODUCTS.
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J6:6 6 7 J5:7 N120 J6:7 7 7 6 N77 D18 R104 C32 100-25V R113 .47-2W 8 PL R111 N74 D19 N76 R105 R107 R102 N73 C129 .1-250V N82 2+ FROM CH B SHEET 3 BR-NEG N462 2- J7 15-2W R93 15-2W JACK-SPEAKON E10B BR-POS N461 1+ .1-250V R87 15-2W E10A N86 R90 C28 E9B 1- 4148 ^D_SOT-23 1N5402 N70 N466 680pF ^C_0805 470pF ^C_1206 C26 3.9K-2W R96 3.
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J6:10 11 10 N258 J6:9 9 N259 -13VCL 74 7 6 N175 D43 C51 100-25V 3.9K-2W D44 1N5402 R236 .47-2W 8 PL N219 R234 N218 R230 N220 R228 R219 3.9K-2W R225 R220 N217 R217 R214 R208 15-2W R211 ^R_0805 R204 200 N215 4148 ^D_SOT-23 R227 12.7K ^R_0805 C66 10-35V R216 15-2W J8 N464 JACK-SPEAKON E12B 2+ E12A N229 2- E11B 1+ E11A 1- .1-250V 15-2W E11C 5.6-2W R213 C63 R210 EMI_G SPKR-B N228 R221 4148 ^D_SOT-23 15-2W .1-250V C134 R201 5.
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5 4 3 +HI-RAIL N291 SEE SH 2 CH A V-MON, I-MON NEGREF N324 I-MON CH A (WITH SEPARATE CH A THERMAL SUBCODE) OUTER COIL, 6T D88 10V-1N4740A N327 N325 R279 470-2W D57 C67 R280 100-25V C84 .1-250V R257 820-2W +15NTC N297 -IN_CH-A N298 N293 D 100K ^R_1206 N362 D56 6.2V-.3W ^D_ZEN_SOT-23 Q89 3904 ^Q_BJTN_SOT-23 R271 634 ^R_1206 N363 SET ID- R D FOR 1/8 WATT: 110 MA, 1.
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VB VDD 13 10 12 9 11 8 HO RT .1-50V-10% ^C_1206 7 8 SFT-SRT SG3525AN PRI_LO PRI_LO N403 R364 100 ^R_0805 PRI_LO PRI_LO 1 R362 4.75K ^R_0805 R366 LM556-SMT COMP THRESHOLD U14:1 1 DISCHARGE C182 470pF-50V-5% ^C_1206 C181 470pF-50V-5% ^C_1206 C175 470-63V 470-63V FLIP-FLOP CONTROL_V COMP 7.87K ^R_0805 R360 470-100V C174 470-100V C170 C171 470-63V C167 C161 10.0K ^R_0805 10.
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,
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