QSC PLX Series Technical & Service Manual Download Page 43

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PLX 2402 PCB ASSEMBLY (230V) Cont’d

Part Number

Description

Reference

Part Number

Description

Reference

MS-I
PC-000531 -00

PL-000128-00

PL-000135-00

0000-CR

QD-000053-00

QD-000054-00
QD-000062-10

QD-000063-10

QD-000076-00
QD-000077-00

QD-000105-30

QD-000106-30

DUAL OP AMP 5532

HEAT SINK,

TO-220

FUSE

3AG FAST CER

F l

PCB MAIN PLX
INSULATOR, TO-220, PLX

INSULATOR,

PLX

INSULATOR, TO-247, PLX

SPRING, SEAT, PLX
SPACER, LED,

INSULATOR, MICA

X 1.75”

RES VAR IT 250 20%

CAR

RES VAR IT

20%

W/DE

DIODE TO220 ULTRAFAST 200V

1 OV ZENER 1 W

FET NCHAN TO220 60V

Q86

DIODE RECT ULTRAFAST 400V 3

LED GRN T-l

LED YEL T-l

LED RED T-l
XISTOR NPN TO-92 40V

1 5

XISTOR PNP TO-92 40V

XISTOR NPN TO-220 250V
XISTOR PNP TO-220 250V

DIODE SW IN4148 SMT

XISTOR NPN SMT 40V

XISTOR PNP SMT 40V

XISTOR NPN SMT 300V

XISTOR PNP SMT 300V

DIODE SMT SWITCH 200V

QD-000110-30
QD-000113-30
QD-000115-30

QD-000116-30

DIODE ZNR

SMT

DIODE ZNR

SMT

D66

DIODE SMT RECT 600V IA

DIODE RECT SMT 200V IA

QD-000152-10 DIODE ZNR

RECT TO247 UFAST 400V 3

D85

QD-000154-00

QD-000155-00

QD-000169-00
QD-000170-00

XISTOR NPN TO-220 230V
XISTOR PNP TO-220 230V

XISTOR PNP TO-220

3A 40

XISTOR

TO-247AC 600V

DIODE BRIDGE RECT 600V

DIODE ZNR

TESTED

XISTOR PNP TO-3P 200V

XISTOR NPN TO-3P 200V

QD-003281 -NP XISTOR NPN TO-3P 200V

QD-004744.ZA DIODE ZNR

DIODE RECT DO27 200V 3A

D45

RES MOFP

5% 2W MINI

R l l l - 1 1 4 ,

RE-.

RES MOFP 1.5 5% 2W MINI

R269

RES MOFP 5.6 5% 2W MINI

R373

RE-001003-30

THERMISTOR NTC

CUR

R324

THERMISTOR NTC

RES SMT 10 OHM 5%

1206

RES MOFP

5% 2W MINI

R368

RE-003921-30

RES SMT 39.2 OHM 1%

120

RE-004752.30

RES SMT47.5 1%

RE-005606-10
RE-007502-30

RES MOFP 56 5% 2W MINI

R372

RES SMT 75 1%

R194

Summary of Contents for PLX Series

Page 1: ...Technical Service Manual PLX Series PLX 1202 PLX 1602 PLX 2402 PLX 3002 TD 000078 00 TD 000078 00 ...

Page 2: ... PLX 1202 PLX 1602 PLX 2402 PLX 3002 ...

Page 3: ...02 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 com ...

Page 4: ...230V 28 PLX 1602 PCB Assembly 120V 28 PLX 1602 PCB Assembly 230V 31 PLX 1602 Chassis Assembly 120V 34 PLX 1602 Chassis Assembly 230V 34 PLX 2402 PCB Assembly 120V 35 PLX 2402 PCB Assembly 230V 38 PLX 2402 Chassis Assembly 120V 41 PLX 2402 Chassis Assembly 230V 41 PLX 3002 PCB Assembly 120V 42 PLX 3002 PCB Assembly 230V 45 PLX 3002 Chassis Assembly 120V 48 PLX 3002 Chassis Assembly 230V 49 50 53 PL...

Page 5: ...OkHz 0 1 THD Voltage Gain dB Sensitivity for rated power 8 ohms Distortion Frequency Response LF Switched Off Damping Factor 1 kHz and Below Noise Input Impedance Dimensions FaceplateWidth FaceplateHeight ChassisDepth Weight Net Lbs kg 700 iatts 1100 watts 1500 watts 32 32 32 1 00vrms 1 20 Vrms 1 50 Vrms SMPTE IM Less than 0 01 2OHz to 2OkHz I 0 2dB 8Hz to 5OkHz Ol 3dB Greater than 500 106dB below...

Page 6: ...matics Equivalent Parts Although many of the electronic components used in this product may be available from electronic suppliers some components are specially tested and approved by WC A product repaired with non WC supplied components may not meet factory specifications Repairs performed using non QSC parts may void the product warranty men in doubt you may contact QSC Technical Services for as...

Page 7: ...t the amplifier has achieved stable operation during idle Remove AC power from the amplifier and disconnect the series resistor for normal operation Continue with the test calibration process I Slowly raise the variac voltage and watch for excessive current draw line current greater than 0 5A a c at 60 Volts This is slightly less for 240V Pause at 9OVAC 2OOVAC European for three seconds until the ...

Page 8: ...an 13A ac This is with a 120 volt AC service to the amplifier Current may be lower if AC line voltage is lower 3 Remove the short from each channel and verify that the channels recover in to 2 ohm loads The output should not experience any hang up and a full sinewave should be present just as it was before a short was applied for this test 4 If the amplifier does not pass any of the above steps tr...

Page 9: ...sition 1 on 10 on all others off 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 Connect a dual channel oscilloscope to the following test points Chl a 1 OX vertical sensitivity 2V cm scope probe to the channel speaker output Ch2 a IX scope probe vertical sensitivity O lV cm to the distortion analy...

Page 10: ...ce on the oscilloscope It will be necessary to have the oscilloscope measure unfiltered distortion from the amplifier in order to see the crossover spike It is necessary to 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 an...

Page 11: ...l shutdown after an extended period 5 When thermal shutdown occurs verify AC idle current of less that 0 90 amperes 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 inversio...

Page 12: ... protect circuit disengages Continue to 12OVAC 24OV European 2 Verify that the fan is operating at low speed 3 Turn the power switch off and on a few times to verify the 3 second power up muting delay l CHANNEL OUTPUT I 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 gener...

Page 13: ...EQUENCY RESPONSE 1 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 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 ...

Page 14: ... clockwise and turn on power switch 6 Connect the output of the signal generator to the input terminals of the amplifier and select an output of 1 70 VRMS 1 kHz sine wave 7 Plug the amplifier into a variac and set up an AC line current monitor POWER UP 8 MUTE DELAY TEST CAUTION To avoid damage to the main printed circuit board place a 50 ohm 225W resistor 100 ohm 240VAC in series with the high lea...

Page 15: ...fier 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 SHORT CIRCUIT CURRENT 1 Select a 2 ohm load and apply a 1 3Vrms sinewave 1 kHz input signal to both channels of the amplifier Ensure that power is on and that the gain controls are fully up 2 While the amplifier is producing power into the ...

Page 16: ... E S T 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 114 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 l OUTPUT NOISE 1 Set the amplifier gain controls all the way up with a 1 kHz ...

Page 17: ... usual cause of failure is when both IGBT s turn on at once shorting Pri Hi to Pri Lo This occurs when something causes the drive signal to one part to remain on when the other part is supposed to turn on Shorts from solder or debris are one obvious cause SHORTS IN THE LOAD Although there is peak current shutdown shorts in the power amplifier transistors or secondary side supply components can cau...

Page 18: ...g the net voltage at Ul6 feedback pin 4 to about 5 lV Ul6 uses this feedback to adjust the on time at pin 5 in order toraise or lower the flyback voltage charging Cl38 and thus maintain regulation of the 16V and 18V supplies C142 R356 and R349 form a closed loop stability circuit which prevents the regulated voltage from hunting Q99 and associated R374 reduce the voltage of the Bias supply by 33 w...

Page 19: ...ositive Ql9 R381 Q20 R70 DIO D14 Negative Q22 R382 Q21 R71 Dl I D12 Ch 2 Positive Q64 R383 Q65 Rl93 D35 D39 Negative Q67 R384 Q66 Rl94 D36 D37 CONSTANT PREMATURE CLIPPING WORSE AT LOW IMPEDANCES First check the clamping voltages on C21 Ch I C22 Ch I C56 Ch 2 C57 Ch 2 as shown in table below At idle all four voltages should all be similar If one is out check parts according to the following table C...

Page 20: ... seconds If both channels of the amplifier fail to cut back after about 3 seconds 2 ohms both channels driven the cutback signal is probably missing CAUTION Prolonged operation under these conditions could blow IGBT or burn out Cl44 Test for 6 10 seconds maximum Check the output secondary side pins of U17 sh 4 Confirm presence of 6V on pin 5 Pin 4 should normally be at about OV and go high I 5V af...

Page 21: ...andoff which protrudes into the hole so this should not occur if care is taken while installing the heatsink If shorted to the heat sink the amplifier output voltage is coupled to the NTC If the short is to the grounded lead of the NTC it may not damage anything If to the other end a large voltage is put across the NTC which will probably damage it SHORT FROM LIVE END OF NTC TO HEAT SINK Replace a...

Page 22: ... than most instabilities It will be more visible at low frequencies 2OOHz and at lower impedances Missing jumper at R224 Missing Cl29 134 on output board Grounds not connected to chassis at output board and front chassis mounting screw FEEDBACK PROBLEMS GAIN INCORRECT Gain of output stage set by R23 31 147 153 Gain of Ch 1 volume control buffer stage set by RI 1 16 Gain of Ch 2 volume control buff...

Page 23: ...pe probing of the switched waveform will help determine the cause of excess step distortion The step should switch when the output voltage is within IO 12 volts of its respective rail This switching margin should be fairly constant from20 20kHz The switching event itself should be a fairly uniform up and down ramp moving at about 25 volts us therefore taking about 2us to complete its transition St...

Page 24: ... circuit from the step FET back via gate drive to drive circuit to locate cracks missing part etc Check DC power on step driver 14V on EACH positive step drivers 12V on BOTH negative drivers Check voltage of PosRef 20V below 65V rail or Negref 17 5V above 65V rail Look for severe mismatches of the comparator resistor ladders STEP STUCK ON Switched Rail Voltage Stuck On Full If the positive step is...

Page 25: ...ource of the false signal must be found Be sure the output is checked with a DC coupled scope in order to confirm absence of an actual DC offset The circuit will trip on DC offsets exceeding about 4V The optocoupler s input can be safely disabled by shorted Ul5 pins I 2 together This will indicate if false triggering is before or after Ul5 The output of UlO l pin 1 should be monitored If it goes l...

Page 26: ...led 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 22 ...

Page 27: ... 822200 AE CAP LYTIC RL 22OOUF 20 200V Cl 32 133 CH 000102 00 HEATSINK AUDIO PLX CH 000103 00 SPRING CLAMP 2 HOLE CH 000104 00 HEATSINK PS PLX CH 0001 1 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 POSITION J13 CO 000162 00 BNDG POST A DUAL SLOT PLX CO 000163 00 BNDG POST...

Page 28: ... 47 5 2W MINI RlO3 107 R108 111 RI 12 114 R211 212 R214 215 R225 226 R230 231 R234 237 Raasa9 91 R92 102 RE 56002 10 RES MOFP 5 6 5 2W MINI R203 221 R354 355 R373 R80 98 RE 120002 30 RES SMT 2 OOK 1 l l OW IOOV RE 122103 30 RES SMT2 2lK 1 IIIOW 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 I 1 4W 25PPM RE 000210 NR THERMISTOR NTC 15A CUR L...

Page 29: ...ACK El2A 2C REF SPEAKER WIRE WHITE E9A 9C REF SPEAKER WIRE GREY EllA IIC REF SPEAKER WIRE BLACK EIOA IOC WC 000118 00 WIRE ASSY BLK LONG EHI EH2 REF WC 000118 01 WIRE ASSY RED SHORT ELI EIZOA WC 0001 18 01 WIRE ASSY RED SHORT REF XF 000005 00 BEAD FERRITE WI2OAWG LEAD L9 lO XF 000023 00 CHOKE COMMON MODE 2 2MH L3 4 XF 000061 00 INDUCTOR TORIOD 1 9UH 13GA L6 XF 000064 00 XFMR AMP HOUSEKEPPING PLC T...

Page 30: ...200V 2A 50 Dl3 16 3 IC 000024 00 IC 000047 30 tc 000048 30 IC 00005 I 00 IC 000053 30 IC 000054 30 IC 000073 30 IC 000134 00 IC 000135 00 IC 005532 OP MS 000048 HS MS l 50250 FU PC 000531 00 PL 000114 00 PL 000126 00 000128 00 D41 61 68 D78 79 IC REG PWM 40V O lA SG3525A Ul9 IC LIN DUAL COMP LM393 so a UIO IC LIN DUAL OP AMP MC33078 Ul 6 IC OPTO IS0 MOC8101 u15 17 IC LIN SMT DUAL TIMER LM556 Ul4 I...

Page 31: ...R48 72 75t R240 264 R265 267 R3472348 R47 170 R251 Rll l7 Rl25 126 Rl31 137 RI 38 253 R3 4 10 R327 330 R362 RE 156001 10 RES 5 6OK I 1 4W 25PPM RE 159002 30 RES SMT 5 9OK 1 l l OW 1 OOV RE 175002 30 RES SMT 7 5OK 1 l lOW 1 OOV RE 178701 30 RE 190902 30 RES SMT 7 87K 1 l lOW 1 OOV RES SMT 9 09K 1 1 I OW 1 OOV RE 210003 30 RES SMT lO OK 1 l lOW IOOV RE 212702 30 RES SMT 12 7K 1 l lOW IOOV RE 215002 ...

Page 32: ... 2OAWG LEAD L9 lO CHOKE COMMON MODE 2 2MH L3 4 INDUCTOR TORIOD 1 9UH 13GA L6 XFMR AMP HOUSEKEPPING PLC Tl XFMR PLXl202 2402 T2 INDUCTOR 2UH 14AWG VERT M Ll 2 PLX 1202 CHASSIS ASSEMBLY 12OV Part Number Description Reference CH 000097 00 CH 000100 00 CH 000112 00 LB 000052 00 LB 000053 00 LB 000077 00 LB 00021 5 00 LB 000236 00 LB I 60226 05 NW 380801 IL PL 000003 CP PL 000040 PL PL 000044 PL PL 000...

Page 33: ... IC LIN DUAL OP AMP LMl3600 U3 IC 000134 00 IC CMOS HV DRVR lR2110 u l a IC 000135 00 IC LIN PWM SWITCH TOP 210 U16 IC 005532 OP IC LIN DUAL OP AMP 5532 EX MP U2 7 MS 000048 HS HEAT SINK ISOL TO 220 REF Q91 Part Number Description Reference MS 0001 12 00 FUSE 25A 125V 3AG FAST CER Fl PC 000531 00 PCB MAIN PLX PL 000114 00 INSULATOR lGBT RECT HS PLX PL 000126 00 SPRING SEAT PLX PL 000128 00 SPACER ...

Page 34: ... R367 368 R85 87190 R93 208 RE 156001 10 RES 5 6OK I 1 4W 25PPM Rl3 129 Rl30 135 RI36 R8 9 12 RE 159002 30 RES SMT 5 9OK 1 l l OW 1 OOV RI 52 R29 122 RE 163402 30 6 34K l l OW 1 1 OOV SMT Rl82 185 R59 62 RE 003921 30 RES SMT 39 2 OHM 1 1 8W 120 R246 249 RE 175002 30 RES SMT7 5OK 1 l lOW IOOV Rl20 132 Rl40 161 Rl5 38 RE 005606 10 RES MOFP 56 5 2W MINI RE 007502 30 RES SMT 75 1 l l OW 1 OOV RE 01000...

Page 35: ...LXl602 12OV T2 XF 000086 00 XFMR PWR PLXl602 IOOV T2 XF 000064 00 XFMR AMP HOUSEKEPPING PLC Tl XF 200014 CR INDUCTOR 2UH 14AWG VERT M Ll 2 Part Number Description Reference CA 010002 30 CAP 1 OPF 5 5OV 0805 SMT c14 49 CA 015002 10 CAP CER 15PF 10 500V SL Cl6 50 CA l 10002 30 CAP CER 1 OOPF 5 50V NPO SM C40 41 43 C5 6 9 18 c53 CA l 33001 10 CAP SM 330PF 5 500V Cl45 146 CA l 47003 30 CAP 470PF 5 50V...

Page 36: ... XISTOR NPN TO 92 40V 0 2A 1 5 QD 000063 10 XISTOR PNP TO 92 40V 0 2A 1 5 QD 000076 00 XISTOR NPN TO 220 250V QD 000077 00 XISTOR PNP TO 220 250V QD 000102 30 DIODE SW 1 N4148 SMT 75V 75M QD 000103 30 XISTOR NPN SMT 40V 2A 2W VR43 166 VR2 121 D74 75 80 D81 D70 71 LD2 3 4 7 LD8 9 11 LDI 6 LD5 lO Q20 65 Q21 66 Q27372 Q26 71 Dl 5 8 9 DIO 12 14 D23 30 33 D34 37 39 D48 51 55 D59 63 65 D67 69 89 D90 91 ...

Page 37: ...65 R232 250 R252 369 RlOl lO9 Rl47 154 Rl57 15a Rl62 164 R23 32 34 R2701273 R35 39 41 Rl95 19a R72 75 RI71 R4a l27 R240 264 R265 267j R347 34a R47 170 R251 Rll l7 Rl25 126 Rl31 137 RI 3a 253 R3 4 10 R327 330 R362 Rl3 129 Rl30 135 RI36 Ra 9 12 RI52 R29 122 Rla2 la5 R59 62 RE 210003 30 RES SMT 1 O OK 1 l lOW 1 OOV R336 33a R363 366 R3752376 RE 212702 30 RES SMT 12 7K 1 l lOW IOOV RlO6 133 Rl34 139 R...

Page 38: ...CORD PROTECTOR PL 000040 PL POT COVERS PL 000044 PL BUSHING STRAIN RELIEF PL 000054 00 KNOB FAB PL 000066 00 CLIP XMAS TREE SLG HEAD FASTEX PL 000095 00 FAN INTERFACE PLX PL 000096 00 lNSULATOR FAN DUCT PLX SC 025000 PP SCREW M2 5 X 6MM TYPE 1 PH BLK SC 060060 PS SCREW 6 32 X 375 SEMS EXTL ZC SC 082051 PL SCREW TAP PAN PH 8X5 16 B BK SW 000016 S SPST SNAP IN POWER SWITCH WC 0001 14 00 AC CORD ASSY...

Page 39: ...CA 710004 10 CAP LYTIC RL IOOUF 20 25V Cl38 149 Cl50 CA 747001 10 CAP LYTIC RL 470UF 20 16V C73 74976 c77 131 CA 747004 00 CAP LYTIC RL 470UF 20 1 OOV Cl 52 153 Cl59 160 Cl65 166 CA 747004 00 CAP LYTIC RL 470UF 20 IOOV Cl69 170 c173 174 CA 747063 AE CAP LYTIC RL 470UF 20 63V c151 154 C 58 161 Cl64 167 Cl68 171 Cl72 175 CA 822200 AE CAP LYTIC RL 2200UF 20 200V Cl 32 133 Cl36 137 CH 000102 00 HEATSI...

Page 40: ...353 356 R358 359 RE 001502 10 RES MOFP 15 5 2W MINI R209 210 R213 216 R350_3679 R368 R85 8739Ov R93 208 RE 003921 30 RES SMT 39 2 OHM 1 1 8W 120 R246 249 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 0001IO 30 DIODE ZNR 6 2V 5 3W SMT D56 QD 000113 30 DIODE ZNR IOV 5 3W SMT D66 QD 00...

Page 41: ...ference R245 259 R329 337 R36 45 46 R65 104 RE 215002 30 RES SMT 15 OK 1 l lOW IOOV R25 148 R262 365 RE 216501 CM RES MF 16 5K 1 1 2W R31 153 RE 220002 30 RES SMT 2O OK 1 l lOW 1 OOV Rl8 141 R229 242 R244 271 R331 346 RE 224901 30 RES SMT 24 QK 1 l l OW 1 OOV R325 RE 230002 10 RES MOFP 30K 5 2W MINI R351 352 RE 230102 30 RES SMT 3O lK 1 1 8W 1206 Rl72 173 R49 50 RE 239202 30 RES SMT 39 2K 1 l lOW ...

Page 42: ...0 5OVX7R SMT Cll6 125 c135 155 Cl62 163 Cl77 178 Cl79 180 CA 410011 00 CA 422001 10 CA 447001 00 CA 447003 00 CA 51 0005 30 CA 510006 00 CA 61 0002 10 CA 647001 10 CA 647002 10 CA 710002 10 CA 710002 10 CA 710004 10 CA 747001 10 CA 747004 00 CA 747063 AE CA 822200 AE CH 000102 00 CH 000103 00 CH 000104 00 CH 0001 1 I 00 CH 000114 00 Cl83 185 Cl89 190 c19 39 54 Cl91 CAP MMYL lUF 10 400V ClO7 123 CA...

Page 43: ...2 14 23 Q24 31 33 Q42 43 44 Q45 48 51 Q55 57 59 Q68 69 76 Q78 87 88y Q94 98 99 XISTOR NPN SMT 300V 2A 2W Ql6 61 XISTOR PNP SMT 300V 2A 2W Ql7 62 DIODE SMT SWITCH 200V 2A 50 Dl3 16 38 QD 000110 30 QD 000113 30 QD 000115 30 QD 000116 30 DIODE ZNR 6 2V 5 3W SMT D56 DIODE ZNR IOV 5 3W SMT D66 DIODE SMT RECT 600V IA D58 60 86 DIODE RECT SMT 200V IA D62 76 77 D82 83 QD 000152 10 QD 000153 00 DIODE ZNR 1...

Page 44: ...28 R251 R96 105 Rll l7 Rl25 126 Rl31 137 Rl38 178 Rl79 182 Rl85 186 Rl87 253 R3 4 10 R327 330 R362 R55 56 59 R62 64 Rl3 129 Rl30 135 RI36 R8 9 12 Rl22 152 R201 206 R29 78 83 RE 175002 30 RES SMT 7 5OK 1 l lOW IOOV Rl20 132 Rl40 161 Rl5 383 RE 178701 30 RES SMT 7 87K 1 l lOW IOOV R360 RE 190902 30 RES SMT 9 09K 1 l lOW IOOV R258 266 R272 RE 210003 30 RES SMT 1 O OK 1 l lOW 1 OOV R336 338 R363 366 R...

Page 45: ...00096 00 SC 025000 PP SC 060060 PS SC 082051 PL SW 000016 S WC 000114 00 WP 000057 00 WP 002403 00 CHASSIS PLX HANDLE EAR CASTING PLX SHIELD AC PLX LABEL cUL APPROVAL LBL FRENCH FUSE REPLACEMENT LABEL WARNlNG HlGH ENERGY LABEL INPUT OUTPUT PLX LABEL FACEPLATE PLX 2402 LABEL FUSE UL CAUT 25A 125V 3 8 INTERNAL TOOTH LOCKWASHER AC CORD PROTECTOR POT COVERS BUSHING STRAIN RELIEF KNOB FAB CLIP XMAS TRE...

Page 46: ...6 C57 89 CA 710002 10 CAP LYTIC RL IOOUF 20 25V c102 104 ClO5 106 c139 142 Cl43 Cl5 32 51 C67v72t78s c79 33 CA 710004 10 CAP LYTIC RL 1 OOUF 20 25V Cl38 149 CA 710004 10 CAP LYTIC RL 1 OOUF 20 25V Cl50 CA 722001 10 CAP LYTIC RL 220UF 20 IOV N C91 92 CA 747001 10 CAP LYTIC RL 470UF 20 16V Cl31 C73374776 C77n82783 CA 747004 00 CAP LYTIC RL 470UF 20 1 OOV Cl 52 153 Cl59 160 Cl65 166 Cl69 170 c173 174...

Page 47: ...001IO 30 DIODE ZNR 6 2V 5 3W SMT D56 92 QD 000113 30 DIODE ZNR 1OV 5 3W SMT D66 QD 000115 30 DIODE SMT RECT 600V 1A D58 60166 QD 000116 30 DIODE RECT SMT 200V IA D62 76 77 D82 83 QD 000152 10 DIODE ZNR 12V 5 1 W 1 N4742A D57 Part Number Description Reference QD 000153 00 DIOD RECT TO247 UFAST 400V 3 D72 73 84 D85 QD 000154 00 XISTOR NPN TO 220 230V Ql9 64 QD 000155 00 XISTOR PNP TO 220 230V Q22 67...

Page 48: ... 228 R251 R96 105 Rll l7 40 Rl25 126 Rl31 137 Rl38 163 Rl66 178 Rl79 182 Rl85 I 87 R253 315 R3 4 10 R316 318 R327 330 R362 RE 156001 10 RES 5 6OK I 1 4W 25PPM R55 56 59 R62 64 Rl3 129 Rl30 135 RI36 RE 156001 10 RES 5 6OK I 1 4W 25PPM R8 9 12 RE 159002 30 RES SMT 5 9OK 1 l lOW IOOV Rl22 152 R201 206 R29 78 83 RE 175002 30 RES SMT 7 5OK 1 l lOW IOOV Rl20 132 Rl40 161 Rl5 38 RE 178701 30 RES SMT 7 87...

Page 49: ... CA 047002 30 CAP CER 47PF 5 50V NPO SMT Cl93 C29 30 64 c65 la7 CA l 10001 10 CAP SM 1 OOPF 5 500V Cl47 CA 110002 30 CAP CER 1 OOPF 5 50V NPO SM C40 41 43 C5 6 9 1 a c53 99 100 CA l 33001 10 CAP SM 330PF 5 500V Cl45 146 CA 147003 30 CAP 47OPF 5 5OV 1206 SMT Cl 2 4 17 Part Number Description Reference c119 121 c14a iai cia2 ia6 ciaa C26 36 37 C52 61 CA 16aOO3 30 CAP CER 6aOPF 5 50V NPO SM C25 60 6a...

Page 50: ...G SEAT PLX PL 00012a 00 SPACER LED 276 LD2 11 Rl55 LDl REF R30 PL 000135 00 INSULATOR MICA 1 25 X 1 75 REF Q96 97 PL 905156 SP SPACER ROUND NYLON 6 0 155 REF Ll 2 P f l 25000 AT RES VAR IT 250 20 0 15W CAR VR43 166 PT 310000 CR RES VAR IT IOK 20 0 2W W DE VR2 121 QD 000014 QD DIODE TO220 ULTRAFAST 200V D21 22 46 D47 74 75 Dao ai Part Number Description Reference QD 000021 QD 1 N4740 I OV ZENER 1 W...

Page 51: ...01003 30 RES SMT 10 OHM 5 IBW 1206 R314 353 R356 358 R359 RE 001502 10 RES MOFP 15 5 2W MINI R209 210 R213 216 R350 367 R368 Ra5 a7 90 R93 208 RE 122103 30 RES SM r 2 2lK 1 IIIOW IOOV RE 130102 30 RES SMT 3 OlK 1 l lOW 1OOV RE I 39002 10 RES MOFP 3 9K 5 2W MINI RE 003921 30 RES SMT 39 2 OHM 1 IBW 120 R246 249 R2543255 R44 167 R274 277 R279_280 Rl51 160 R28 37 R291 r294 R22 146 R361 s374 R370 R257 ...

Page 52: ...WITCH WIRE RED SHORT REF ESl TO SWITCH SPEAKER WIRE BLACK El 2A 12C REF SPEAKER WIRE WHITE E9A 9C REF SPEAKER WIRE GREY EIIA IlC REF SPEAKER WIRE BLACK EIOA IOC REF WIRE ASSY BLK LONG EHI EH2 REF BEAD FERRITE W 2OAWG LEAD L7 12 CHOKE COMMON MODE 2 2MH L3 4 XFMR PWR PLX3002 T2 INDUCTOR TORIOD 1 9UH 13GA L6 XFMR AMP HOUSEKEPPING PLC Tl INDUCTOR AIR 2UH 14122GA Ll 2 PLX 3002 CHASSIS ASSEMBLY 12OV RE ...

Page 53: ...TH LOCKWASHER PL 000003 CP AC CORD PROTECTOR PL 000024 00 STRAIN RELlEF LiQ TlGHT HEYCO PL 000040 PL POT COVERS PL 000054 00 KNOB FAB PL 000055 00 EXPORT BINDING POST PLUG RED PL 000056 00 EXPORT BINDING POST PLUG BLK PL 000066 00 CLIP XMAS TREE SLG HEAD FASTEX PL 000095 00 FAN INTERFACE PLX PL 000096 00 lNSULATOR FAN DUCT PLX SC 025000 PP SCREW M2 5 X 6MM TYPE 1 PH BLK SC 060060 PS SCREW 6 32 X 3...

Page 54: ...eries Semiconductor Identification TMOS FET lRFZ44 TMOS Power Field Effect Transistor OP AMP TL072 SMALL SIGNAL TRANSISTORS Dual Operational Amplifier 2N3904 NPN I2N3906 PNP DRIVER TRANSISTORS 2SC4793 NPN I2SAl837 PNP BCE POWER TRANSISTORS 2SC3281 NPN I2SAl302 PNP l C E C 50 ...

Page 55: ...M PWM Switch PWM MOSFET Gate Driver TOP21 0 OP AMP LMI 3600 OP AMP MC33078 Dual Transconductance Operational Amplifier Dual Low Noise Operational Amplifier COMPARATOR Voltage Comparator LM311 OPTO ISOLATOR Moc8lol Gallium Arsenide LED Coupled to Phototransistor 51 ...

Page 56: ...2 PLXl602 Insulated Gate Bipolar Transistor c clx k n channel G 2 E HIGH LOW SIDE DRIVER lR2110 High Speed MOSFET I IGBT Driver IGBTDRIVER VDD SD HIN LIN vss LO VB COM HO v s v c c Lo it lfo shutdown Low side o l Logjc input low side Logic supply Lognc ground Low side return Lcmic imul hiah side High s defloatingsupply High side output High side floating supply Low side sumlv COMPARATOR SOIC Quad ...

Page 57: ...EAR 2 REDO KNOB J 2 REW FACEPLATE LABEL CHASSIS ASSEMBLY MEW A A l H E X N U T NW 3BOBO3 HN PART OF 1 4 PHONE JACK ON ITEM 39 PCB ASSY 1 THIS DRAMNG USED IN CONJUNCTION lTH SCHEMATIC DWGs MAIN PCB ASSY SH 000541 00 WRING DIAGRAM SH 000540 00 AND FINAL ASSY FG 000540 XX ...

Page 58: ...H z _ _ _ _ Fi G g u ...

Page 59: ...Q 55 ...

Page 60: ...PLX MAIN MOOULE ASSEMBLY smm 6 20 Y 5 r I_ 1 w ...

Page 61: ...NTROL SHEET 4 SHUTDOWN TRIGGERS EMI FILTER SUPPORT AND PROTECTION CIRCUITS FAN SPEED TO MUTE CONTROL THERMAL SHUTDOWN DC FAULT SHUTDOWN POWER SUPPLY BLEEDERS OP AMP SUPPLIES 2 COMPONENTS WITH VALUE PREFIXED WITH A REPRESENT SMT COMPONENTS NOTES UNLESS OTHERWISE SPECIFIED CLIP LIMITING LED DISPLAY FILTER INPUT GAIN POT POSITIVE OUTPUTS NEGATIVE OUTPUTS THERMAL SENSING LOOP GAIN FEEDBACK CURRENT SPL...

Page 62: ...VIC C5 100pF 50V 5 C_0805 C8 1 5 C12 1 5 A1 R5 75 R_0805 N4 N5 N7 N8 N12 3 J4 3 2 J4 2 N1 N10 2 J3 2 3 J3 3 R9 5 60K 1 R12 5 60K 1 POSREF N13 N17 N54 R25 15 0K R_0805 10K RE 230 R30 N44 R101 1 50K R_0805 N45 P R41 1 50K R_0805 C15 100 25V N473 CW CCW W VR43 250 D3 D_SOT 23 4148 N47 NTCBUS N46 N21 5 6 7 U1 2 MC33078 SMT AMP LOOP GAIN 32DB REVISION USE SAME VALUE AS PLC 2 SIGNAL POLARITY INVERTED N5...

Page 63: ...00pF 50V 5 C_0805 C42 47 10NP 10 D25 4148 D_SOT 23 R140 7 50K R_0805 N157 N179 N182 N183 12 7K R_0805 R134 N188 IN_DPB IN_CH B IN_CH B 14VIC R123 75 R_0805 N151 N152 C40 100pF 50V 5 C_0805 A1 C44 1 5 N155 18 J4 18 19 J4 19 N475 19 J3 19 18 J3 18 R129 5 60K 1 R135 5 60K 1 POSREF POS STEP DRIVER N156 N165 N158 5 6 7 U6 2 MC33078 SMT C47 1 5 R148 15 0K R_0805 10K RE 230 R155 R109 1 50K R_0805 C33 100...

Page 64: ... 15V C76 470 16V C73 470 16V 13VCL MID RAIL HI RAIL 14VIC 11V N283 N286 N287 N282 R256 470 2W 15NTC POSREF P1 N468 JUMPER D87 C191 1 50V C_1206 A1 MID RAIL DP STBY N285 14VIC 11V N284 MID RAIL N288 NEGREF P1 N469 JUMPER D88 R276 470 2W R277 470 2W R278 470 2W HI RAIL V NEGSTEP N322 L Z_A1 OUTER COIL 6T CH A V MON I MON N323 N324 D TH SUBC A I MON CH A WITH SEPARATE CH A THERMAL SUBCODE N327 11V N3...

Page 65: ...0 25V 105C C138 N117 4148 D_SOT 23 D65 4148 D_SOT 23 D64 4148 D_SOT 23 D63 D62 MURS120T3 S3 S4 T1 2 N429 N430 D74 200V 15A D71 MUR440 200V 2A 50NS D_SOT 23 D79 N392 R355 5 6 2W N389 C146 330p 500V C113 0033 R372 56 2W N472 G C E Q97 IRG4PC40 1 LO 7 HO 2 COM 3 VCC 5 VS 6 VB 9 VDD 10 HIN 11 SD 12 LIN 13 VSS 14 8 4 U18 IR2110 PRI_LO R358 R_1206 10 0 N393 N395 1 2 L9 6UH BEAD N435 N436 N437 47 400V C1...

Page 66: ...TDOWN POWER SUPPLY BLEEDERS OP AMP SUPPLIES 1 THIS DRAWING USED IN CONJUNCTION WITH ASSEMBLY WP 000516 00 2 COMPONENTS WITH VALUE PREFIXED WITH A REPRESENT SMT COMPONENTS NOTES UNLESS OTHERWISE SPECIFIED LED DISPLAY FILTER INPUT GAIN POT POSITIVE OUTPUTS NEGATIVE OUTPUTS THERMAL SENSING CURRENT SPLITTER LOOP GAIN FEEDBACK CLIP LIMITING SPKR OUTPUT INPUT BR MONO ROUTING LED DISPLAY FILTER GAIN POT ...

Page 67: ...N7 N8 N12 3 J4 3 2 J4 2 N1 N10 2 J3 2 3 J3 3 R9 5 60K 1 R12 5 60K 1 IN_CH A IN_CH A IN_DPA SH 4 EURO INPUTS N13 N17 N54 R25 15 0K R_0805 N473 C15 100 25V R41 1 50K R_0805 P N45 R101 1 50K R_0805 N44 10K RE 230 R30 R36 9 09K R_0805 NTCBUS 5 6 7 U1 2 MC33078 SMT N21 N46 N47 D3 D_SOT 23 4148 N230 N51 C21 47 50V Q14 3906 Q_BJTP_SOT 23 N48 N49 N64 N50 P R45 15 0K R_0805 R51 150K R_1206 D10 4148 D_SOT 2...

Page 68: ...DP BR F SH 4 INPUT AND FILTER SECTION CH B R123 75 R_0805 N151 N152 C40 100pF 50V 5 C_0805 A1 C44 1 5 N155 18 J4 18 19 J4 19 N475 19 J3 19 18 J3 18 R129 5 60K 1 R135 5 60K 1 IN_CH B IN_CH B IN_DPB SH 4 EURO INPUTS N156 N165 N158 5 6 7 U6 2 MC33078 SMT C47 1 5 R148 15 0K R_0805 A1 P N203 C33 100 25V R109 1 50K R_0805 10K RE 230 R155 R159 9 09K R_0805 NTCBUS 14 J4 14 N160 R149 47 5K R_0805 4148 D_SO...

Page 69: ...24 L Z_A1 D N327 N326 N69 TH SUBC A SEE SH 2 N328 N325 D N329 D N289 N290 N291 N292 P1 DP PAR F SPKR A 11V SH 2 SH 3 V MON CH A NEW BMF SUBCODE 0 2V 0 5V BITS INJECT V DC POST OPAMP NO GAIN SCALING BMF VOLTAGE SCHEME BINARY CODING 2 BITS SOURCE VOLTAGE 13V NOM 11V 14 5V UNREG STEREO NORMAL BINARY 0 0 0V OUT INPUTS PARALLEL BINARY 0 1 5V NOM 42 575 BR MONO BINARY 1 0 1 0V NOM 85 1 15 BR MONO PAR BI...

Page 70: ...20T3 S3 S4 T1 2 18V 16V N429 N430 D74 200V 15A D71 MUR440 200V 2A 50NS D_SOT 23 D79 N392 R355 5 6 2W N389 C146 330p 500V C113 0033 R372 56 2W N472 G C E Q97 IRG4PC40 1 LO 7 HO 2 COM 3 VCC 5 VS 6 VB 9 VDD 10 HIN 11 SD 12 LIN 13 VSS 14 8 4 U18 IR2110 N393 N395 1 2 L9 6UH BEAD N435 N436 N437 200V 2A 50NS D_SOT 23 D78 R354 5 6 2W N388 D70 MUR440 N387 C145 330p 500V N386 47 400V C144 G C E Q96 IRG4PC40...

Page 71: ...Y CONTROL SHEET 4 SHUTDOWN TRIGGERS EMI FILTER SUPPORT AND PROTECTION CIRCUITS FAN SPEED TO MUTE CONTROL THERMAL SHUTDOWN DC FAULT SHUTDOWN POWER SUPPLY BLEEDERS OP AMP SUPPLIES 2 COMPONENTS WITH VALUE PREFIXED WITH A REPRESENT SMT COMPONENTS NOTES UNLESS OTHERWISE SPECIFIED THERMAL SENSING NEGATIVE OUTPUTS POSITIVE OUTPUTS GAIN POT INPUT FILTER LED DISPLAY CURRENT SPLITTER LOOP GAIN FEEDBACK CLIP...

Page 72: ... 2 MC33078 SMT N46 NTCBUS N47 N51 R56 4 75K R_0805 TH SUBC A C21 47 50V R54 150K R_1206 N48 15NTC N49 N64 Q14 3906 Q_BJTP_SOT 23 R45 12 7K R_0805 N50 P R51 100K R_1206 D10 4148 D_SOT 23 D14 4148 D_SOT 23 D16 D_SOT 23 200V 2A 50NS Q_BJTN_SOT 23 3904 Q18 2N3904 Q20 Q_BJTP_SOT 23 Q24 3906 R73 100K R_1206 N78 N83 4148 D9 D_SOT 23 N79 R60 39 2K R_0805 2SC4793 Q19 N65 15NTC C179 1 50V C_1206 P R381 100 ...

Page 73: ...DIP 10 SW1 9 C56 47 50V Q59 3906 Q_BJTP_SOT 23 N204 N205 TH SUBC B 15NTC N207 R164 1 50K R_0805 R168 12 7K R_0805 N206 P R174 100K R_1206 N150 CW CCW W VR166 250 Q_BJTN_SOT 23 3904 Q63 R196 100K R_1206 N210 N222 4148 D34 D_SOT 23 R183 39 2K R_0805 2SC4793 Q64 N211 N224 N225 2N3904 Q65 C189 1 50V C_1206 P 15NTC R_0805 100 R383 N479 R182 4 75K R_0805 Q_BJTP_SOT 23 Q69 3906 36W at full clip R195 2 21...

Page 74: ...IC 11V N283 1 250V C87 N286 N287 R269 1 5 2W R274 470 2W R275 470 2W N282 N468 R257 820 2W R256 150 2W 1N4744A D87 P1 POSREF C84 1 250V 15NTC N284 11V 14VIC N285 MID RAIL A1 C191 1 50V C_1206 P1 NEGREF C90 1 250V N288 MID RAIL D88 10V 1N4740A R276 470 2W R277 470 2W N469 HI RAIL V NEGSTEP N322 C67 100 25V D57 12V 1W 1N4742A R279 470 2W R280 0 7 JUMPER L Z_A1 OUTER COIL 6T CH A V MON I MON N323 N32...

Page 75: ... 15A 200V D71 MUR440 200V 2A 50NS D_SOT 23 D79 N392 R355 5 6 2W N389 C146 330p 500V C113 0033 R372 56 2W N472 G C E Q97 IRG4PC50U 1 LO 7 HO 2 COM 3 VCC 5 VS 6 VB 9 VDD 10 HIN 11 SD 12 LIN 13 VSS 14 8 4 U18 IR2110 PRI_LO N395 R358 R_1206 10 0 C162 1 50V 10 C_1206 C151 470 63V C158 470 63V C164 470 63V C168 470 63V 1 2 L7 6UH BEAD 1 2 L8 6UH BEAD 1 2 L9 6UH BEAD N435 N436 N437 200V 2A 50NS D_SOT 23 ...

Page 76: ...PARTS LIST VENDOR 5 OF 1 C PAT QUILTER Wed Dec 09 1998 1 C SHUTDOWN TRIGGERS EMI FILTER SUPPORT AND PROTECTION CIRCUITS FAN SPEED TO MUTE CONTROL THERMAL SHUTDOWN DC FAULT SHUTDOWN POWER SUPPLY BLEEDERS OP AMP SUPPLIES SHEET 4 RELAY CONTROL INRUSH RELAY NEGATIVE OUTPUTS POSITIVE OUTPUTS NEG STEP LOOP GAIN FEEDBACK GAIN POT INPUT FILTER CLIP LIMITING LED DISPLAY POS STEP CURRENT SPLITTER THERMAL SE...

Page 77: ... N47 D3 D_SOT 23 4148 N230 NTCBUS N51 C21 47 50V Q14 3906 Q_BJTP_SOT 23 R54 150K R_1206 R56 4 75K R_0805 N49 N64 N48 R45 12 7K R_0805 N50 P R51 100K R_1206 D10 4148 D_SOT 23 D14 4148 D_SOT 23 D16 D_SOT 23 200V 2A 50NS Q_BJTN_SOT 23 3904 Q18 2N3904 Q20 Q_BJTP_SOT 23 Q24 3906 R73 100K R_1206 N78 N83 4148 D9 D_SOT 23 N79 R60 39 2K R_0805 2SC4793 Q19 N65 C179 1 50V C_1206 P R381 100 R_0805 N477 15NTC ...

Page 78: ...5K R_0805 4148 D_SOT 23 D28 N159 14 J3 14 9 19 DIP 10 SW1 9 NTCBUS C56 47 50V Q59 3906 Q_BJTP_SOT 23 N204 N205 N207 R164 1 50K R_0805 R168 12 7K R_0805 N206 P R174 100K R_1206 N150 CW CCW W VR166 250 Q_BJTN_SOT 23 3904 Q63 R196 100K R_1206 N210 N222 4148 D34 D_SOT 23 R183 39 2K R_0805 2SC4793 Q64 N211 N224 N225 2N3904 Q65 C189 1 50V C_1206 P R_0805 100 R383 N479 R190 274 R_0805 10V 1N4740A D32 R18...

Page 79: ...279 470 2W R280 470 2W HI RAIL D N323 N324 L Z_A1 D N327 N326 N69 TH SUBC A SEE SH 2 N329 N328 N325 D N330 D N289 N290 N291 N292 P1 DP PAR F SPKR A 11V SH 2 SH 3 V MON CH A NEW BMF SUBCODE 0 2V 0 5V BITS INJECT V DC POST OPAMP NO GAIN SCALING BMF VOLTAGE SCHEME BINARY CODING 2 BITS SOURCE VOLTAGE 13V NOM 11V 14 5V UNREG STEREO NORMAL BINARY 0 0 0V OUT INPUTS PARALLEL BINARY 0 1 5V NOM 42 575 BR MO...

Page 80: ...55 5 6 2W N389 C146 330p 500V C113 0033 R372 56 2W N472 G C E Q97 IRG4PC50U N395 PRI_LO USE THRU HOLE HIGHER WATTAGE C162 1 50V 10 C_1206 1 LO 7 HO 2 COM 3 VCC 5 VS 6 VB 9 VDD 10 HIN 11 SD 12 LIN 13 VSS 14 8 4 U18 IR2110 C151 470 63V C158 470 63V C164 470 63V C168 470 63V 1 2 L7 6UH BEAD 1 2 L8 6UH BEAD 1 2 L9 6UH BEAD N435 N436 N437 200V 2A 50NS D_SOT 23 D78 R354 5 6 2W N388 D70 MUR440 N387 C145 ...

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Page 83: ... QSC andtheQSClogoareregisteredtrademarksofQSCAudioProducts Inc 1675MacArthurBlvd CostaMesa CA92626 800 772 2834 FAX 714 754 6173 www qscaudio com ...

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