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Crown Pulse 2X1100 Supplementary Manual

Crown pulse 2x1100: supplementary guide
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Crown Pulse Series Service Documenation
The information furnished in this manual does not include all of the details of design, production, or variations
of the equipment. Nor does it cover every possible situation which may arise during installation, operation or
maintenance. If you need special assistance beyond the scope of this manual, please contact the Crown
Technical Support Group.
TO PREVENT ELECTRIC SHOCK DO
NOT REMOVE TOP OR BOTTOM
COVERS. NO USER SERVICEABLE
PARTS INSIDE. REFER SERVICING
TO QUALIFIED SERVICE
PERSONNEL. DISCONNECT
POWER CORD BEFORE REMOVING
REAR INPUT MODULE TO ACCESS
1718 W. Mishawaka Road Elkhart IN 46517
Phone: (800) 342-6939 / (219) 294-8200
FAX: (219) 294-8301
CAUTION
GAIN SWITCH.
WARNING
TO REDUCE THE RISK OF ELECTRIC
SHOCK, DO NOT EXPOSE THIS
EQUIPMENT TO RAIN OR MOISTURE!
The lightning bolt
triangle is used to
alert the user to the
risk of electric shock.
©2005 Crown Audio, Inc.
AVIS
À PRÉVENIR LE CHOC
ÉLECTRIQUE N'ENLEVEZ
PAS LES COUVERTURES.
RIEN DES PARTIES
UTILES À L'INTÉRIEUR.
DÉBRANCHER LA BORNE
AVANT D'OUVRIR LA
MODULE EN ARRIÈRE.
The exclamation point
triangle is used to alert the
user to important operating
or maintenance instructions.

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  • Page 1 The information furnished in this manual does not include all of the details of design, production, or variations of the equipment. Nor does it cover every possible situation which may arise during installation, operation or maintenance. If you need special assistance beyond the scope of this manual, please contact the Crown Technical Support Group.

  • Page 2: Cautions And Warnings

    Techicians must have approved ESD protection. Proper grounding straps and test equipment are required. Lightning Bolt Symbol: This symbol is used to alert the user to the presence of dangerous voltages and the possible risk of electric shock. © 2002-2005 Crown Audio®, Inc...

  • Page 3: Switch Mode Power Supply

    (TH1) and once the SMPS is running, a relay (RLY1) closes over, shorting out the resistor and PTC and allowing normal operation. The bridge rectifier (BR2) is used with a bank of 6 1800uF/200V capacitors (C28, C29, C33, C34, C42 & C43), to produce 320V DC.

  • Page 4: Output Stage

    Overall voltage feedback of the amplifier is derived through R243 and R241. R242 and C20 provide local feedback around the Class A section only to define the dominant pole of the amplifier. C126 connected in series with R241 gives 100% DC feedback to minimize any DC offset at the output.

  • Page 5: Protection System

    The Fan can run at two speeds, the changeover happening at about 55 ºC. R9 and ZD2 produce a reference voltage of 9.1V at the cathode of ZD2. This is divided by R18 & R19 to give about 5.5V at pin 12, the non-inverting input, which is compared with the temperature signal at pin13, the inverting input.

  • Page 6: Troubleshooting

    Pulse Checkout Procedures Observe all 1 Dissassembly for Service 1.1 Main Module Removal Remove the top cover by removing the two side, two back, and four top screws. Lift up slightly on the rear of the cover, and then pull it toward the back of the amplifier. Remove the eight screws that hold the input connectors to the chassis.
  • Page 7 Otherwise continue. 4. If a failure has occurred anywhere in the output stages, check the bias servo transistor. Any failure associated with bias transistors may result in repeat failure of the affected channel even if all other defective components have been found and replaced.
  • Page 8 Diagram 1. View from solder side of PCB. 3. Use a 60V DC bench supply (current limited). Connect it across C75 with +60V to point B and Gnd to point A (see Diagram 2). Fit a switch (switched off) across pins 4 and 5 of OPTO1 (be very careful, as a spark here will kill it).
  • Page 9 Diagram 4. With your scope Gnd referenced to point D or A, switch on the DC supply. Wait a second and then switch the opto. The current should go up to about 110 mA. If it goes rather high you have a fault. 5.
  • Page 10 6. Move the probe to monitor the waveform at the IGBT's marked E on Diagram 2. You should see a switching waveform similar to that shown below. 7. Some examples of incorrect waveforms are shown below, along with the likely area of failure. The waveform below is commonly caused by faulty ZTX650-ZTX750 transistors in the power supply.
  • Page 11 The waveform below is commonly caused by a faulty PWM transformer TX4. The waveform below is typical of an overdrive fault (2x1100 version only). This may be caused by a faulty IRF540 or in the BC546-BC556-BF422 transistors in the FET drive section. Or it may be a result of breakdown in the BF422 transistors in the driver stage (refer to Tech Note #165.)
  • Page 12 8. All being well, connect another jumper wire from the +60V rail to the PCB point marked C on Diagram 2. Check the waveform from the output of the IGBT. To do this, monitor the middle pin of the IGBT marked F on Diagram 2. You should have a waveform similar to that shown below.
  • Page 13 wave outputs from the transformer at the points shown in green on Diagram 3. Diagram 3. View from solder side of PCB. 10. The waveforms should be similar to those shown below. For ± MT:...
  • Page 14 For ± HT: For ± 15V (Note: the gain on the V/Div has been increased to give a better view):...
  • Page 15 You have now determined that the power supply is running and that there are DC supplies being generated. You should now check the power supply using a mains supply input. 1. Remove all the connections used for the DC bench supply test. Be sure to remove the switch on the opto isolator -- if it's left in position and switched on, the power supply will not power up.
  • Page 16 Diagram 4. Temporary resistor. 8. Replace the power cord and try the power supply again. It should start. You can measure the DC supply rails at the link points. 9. Switch off the unit and bridge the isolating links between the PSU and amplifier stages with solder. Switch on the unit. 10.

  • Page 17: Checkout/Adjustment Procedures

    Now put the amplifier boards back into the chassis. Fit the minimum of screws to ensure good earthing. If there are any further problems, it is very frustrating to have to undo all the fixing screws again. The screw fixings we suggest are The two chassis earth points.

  • Page 18: Initial Conditions

    the checks listed in Section 2. These checks will minimize the possibility of receiving a nasty surprise when turning on the amplifier. 3.1 Initial Conditions The start of each step assumes all switches are pre-set to the following positions: Mode Switch: Normal position. Level Controls: Both up (clockwise) fully.
  • Page 19 3.2.6 10-kHz Square Wave 10-kHz Sq. Wave Slew Rate Test 8-ohm Load With an 8-ohm load on each channel, insert a 10-kHz square wave and adjust amplitude to produce an output 10V below clipping. Observe a 50V/µS (or higher) slew rate. The output waveform should be stable with no ringing or over-shoot. WARNING: Many of the following checks are done by connecting a resistive load to the output of the amplifier.
  • Page 20 Operation Test Pass < 3KVA Leakage Test Pass < 3 mA © 2002-2005 Crown Audio®, Inc.
  • Page 21 Pulse 2x650 Parts List Part Number Description AE0047 MF 1W RES 5% 4R7 PRO1 AE0100 MF 1W RES 5% 10R PRO1 AE10002 RES 47K0 5% 1W MF PRO1 XA01- AE10010 RES 3R3 5% 1W MF PRO1 AE10012 RES 10K 5% 1W MF PRO1 AE10015 MF 2W RES 5% 10R PRO2 AE10018...
  • Page 22 AP1366 MF 0.25W RES 1% 5K1 BL AP1370 MF 0.25W RES 1% 7K5 BL AP1373 MF 0.25W RES 1% 10K BL AP1377 MF 0.25W RES 1% 15K BL AP1380 MF 0.25W RES 1% 20K BL AP1387 MF 0.25W RES 1% 39K BL AP1389 MF 0.25W RES 1% 47K BL AP1397...
  • Page 23 ZTX651 NPN TRANSISTOR BD10043 ZTX751 PNP TRANSISTOR BE0403 TL074CN QUAD OP AMP BE0417 V.REG 7915 -15V 1A BE0428 NE5532P/NJM5532D DUAL OP AMP @ BE0503 TL431 SHUNT REGULATOR BE10012 LM35-DZ ( SRX ) IC BE10030 V.REG 7815 +15V 1A BK10008 IC MICROC PIC16C57-04P XG04-...
  • Page 24 CA0027 M/LAYER CRMC CAP 10N 100V CA0030 M/LAYER CRMC CAP 50V 4N7 CA0038R C/CAP 0.2"TAPED 100V 15PF CA0041R C/CAP 0.2"TAPED 100V 47PF CA0044R C/CAP 0.2"TAPED 100V 100PF CA0045R C/CAP 0.2"TAPED 100V 150PF CA10023 C/CAP 1000V 470PF CC0238 MICRO-BOX 5MM 5% 63V 1N CC0242 MICRO-BOX 5MM 5% 63V 4N7 CC0244...
  • Page 25 PC JUMPER FF10019 BINDING POST ASSY 4MM FF10022 SPADE TAB VERT PC 0.125C FF10030 4 POLE SKT - SPEAKON FF10046 2W 0.1 ST&F/L CONN HDR CA-CO FF10055 SKT 1X12 SIDE ENTRY FF10063 CONN. 34W BOX GOLD FF10073 HEADER 2X17 R/A FF10079...
  • Page 26 INDUCTOR WIRE DETAIL LF0572 H20 NEOPRENE SLEEVES LF0573 H30 X 20 BLACK SLEEVE LF0596 CABLE TIE 8.0 NARROW M-C250A-01 250 & 650 SOFTWARE NA0084 M3X6MM PAN POZI BLK SCREW NA0384 M2.5X6MM PAN POZ BLK TAPTITE NA0392 SCREW PLAS NO8X3/8" BLK NA0397...
  • Page 27 R-C650B-02-AF 650 FRONT PANEL PCB ASSY R-650 R-C650B-02-SC 650 FRONT PANEL PCB -SC R-650 R-C650B-02-SM 650 FRONT PANEL PCB-SM R-650 R-CR650C-01-AF CROWN 650 REAR PANEL PCB ASSY. S-C650A-04 PCB MAIN BOARD P2X650 S-C650B-02 PCB FRONT PANEL BRD.P2X650 S-CR650C-01 PCB CROWN OUTPUT BRD.P2X650...
  • Page 28 20MM S/ENC PCB MNGT FUSEHOLDER ZD10000 FUSE 20MM T200MA ZD10002 FUSE 20MM T500MA ZD10014 !FUSE 6.3 AMP S/D SLOW T CA-EL ZE10007 CER RESONATOR 3.58MHZ ZM10092-01 MANUAL CROWN P2X650 V1.0 ZZ2893R FILTER 100PF RFI TAPED XM01- XM01- XI01- RF1, RF2, RF3, RF4...
  • Page 29 Pulse 2x1100 Parts List Part Number Description AE0047 MF 1W RES 5% 4R7 PRO1 AE0100 MF 1W RES 5% 10R PRO1 AE10002 RES 47K0 5% 1W MF PRO1 XA01- AE10010 RES 3R3 5% 1W MF PRO1 AE10012 RES 10K 5% 1W MF PRO1...
  • Page 30 AP1365 MF 0.25W RES 1% 4K7 BL AP1366 MF 0.25W RES 1% 5K1 BL AP1370 MF 0.25W RES 1% 7K5 BL AP1373 MF 0.25W RES 1% 10K BL AP1375 MF 0.25W RES 1% 12K BL AP1376 MF 0.25W RES 1% 13K BL AP1377 MF 0.25W RES 1% 15K BL AP1380...
  • Page 31 BA0025 DIODE FAST 400V 1.7A BYD73G BA10004 DIODE IN4004 BA10006 ZENER DIODE 500MW 10V BA10008 DIODE SF1600 1A FAST BB0116 ZENER DIODE 1.3W 47V BB10001 ZENER DIODE 20V 400MW BB10002 ZENER DIODE 500MW 2V7 BB10005 ZENER DIODE 500MV 15V BB10007 ZENER DIODE 500MW 4.7V5% CA-DB BB10011 ZENER DIODE 500MW 47V...
  • Page 32 BD10042 ZTX651 NPN TRANSISTOR BD10043 ZTX751 PNP TRANSISTOR BE0403 TL074CN QUAD OP AMP BE0413 JRC DUAL OP AMP 072BDE BE0417 V.REG 7915 -15V 1A BE0428 NE5532P/NJM5532D DUAL OP AMP @ BE0503 TL431 SHUNT REGULATOR BE10012 LM35-DZ ( SRX ) IC BE10030 V.REG 7815 +15V 1A...
  • Page 33 PC JUMPER FF10019 BINDING POST ASSY 4MM FF10022 SPADE TAB VERT PC 0.125C FF10030 4 POLE SKT - SPEAKON FF10046 2W 0.1 ST&F/L CONN HDR CA-CO FF10055 SKT 1X12 SIDE ENTRY FF10063 CONN. 34W BOX GOLD FF10073 HEADER 2X17 R/A FF10079...
  • Page 34 WIRING LOOM-PULSE F\PANEL L-C300E-01 INDUCTOR WIRE DETAIL LF0572 H20 NEOPRENE SLEEVES LF0573 H30 X 20 BLACK SLEEVE LF0596 CABLE TIE 8.0 NARROW M-C250A-01 250 & 650 SOFTWARE XL04- XP01- XV02- 0.16 0.12 0.05 WAS - CN4, CN5 CN7, CN8 CN9, CN10...
  • Page 35 SPACER-NYLON 6.35X3.56X6.35LG. NE0408 M3 SOLDER TAG NZ10000 ADHESVIE BCK MIN SUPPORT CA-EL P-C1100B-01 INSULATOR-CAPACITORS P-C1100D-01 SPRING CLIP P-C1100E-01 BADGE - PULSE 2X1100 P-C300A-02 INSULATOR HEATSINK - 250 XV01- P-C300B-03 INSULATOR BASE TRAY-PULSE P-C300E-01 FRONT PANEL THERM.INSUL. P-C300F-01 HEATSINK-CUT & PUNCH P-C300J-03...
  • Page 36 R-C650B-02-AF 650 FRONT PANEL PCB ASSY R-650 R-C650B-02-SC 650 FRONT PANEL PCB -SC R-650 R-C650B-02-SM 650 FRONT PANEL PCB-SM R-650 R-CR650C-01-AF CROWN 650 REAR PANEL PCB ASSY. S-C1100A-05 PCB MAIN BOARD - P2X1100 S-C650B-02 PCB FRONT PANEL BRD.P2X650 S-CR650C-01 PCB CROWN OUTPUT BRD.P2X650...
  • Page 37 Pulse 4x300 Parts List Part Number Description AE0047 MF 1W RES 5% 4R7 PRO1 AE0100 MF 1W RES 5% 10R PRO1 AE10002 RES 47K0 5% 1W MF PRO1 XA01- AE10010 RES 3R3 5% 1W MF PRO1 AE10012 RES 10K 5% 1W MF PRO1 AE10018 MF RES 2W 5% 33R PRO2 AE10027...
  • Page 38 AP1349 AP 0.25W RES 1% 1K BL AP1361 MF 0.25W RES 1% 3K3 BL AP1365 MF 0.25W RES 1% 4K7 BL AP1366 MF 0.25W RES 1% 5K1 BL AP1369 MF 0.25W RES 1% 6K8 BL AP1370 MF 0.25W RES 1% 7K5 BL AP1373 MF 0.25W RES 1% 10K BL AP1377...
  • Page 39 AS0104R-0805F SM0805 RES 100K 1% 0.1W T200 AS0113R-0805F SM0805 RES 11K 1% 0.1W T200 AS0152R-0805F SM0805 RES 1K5 1% 0.1W T200 AS0432R-0805F SM0805 RES 4K3 1% 0.1W T200 AS0470R-0805F SM0805 RES 47R 1% 0.1W T200 AS0471R-0805F SM0805 RES 470R 1% 0.1W T200 AS0512R-0805F SM0805 RES 5K1 1% 0.1W T200 AS1103R-1206F SM1206-RES 10K 1% 1/8W T200 BA0001...
  • Page 40 ZTX651 NPN TRANSISTOR BD10043 ZTX751 PNP TRANSISTOR BE0403 TL074CN QUAD OP AMP BE0417 V.REG 7915 -15V 1A BE0428 NE5532P/NJM5532D DUAL OP AMP @ BE0503 TL431 SHUNT REGULATOR BE10012 LM35-DZ ( SRX ) IC BE10030 V.REG 7815 +15V 1A BK10008 IC MICROC PIC16C57-04P XG04-...
  • Page 41 BZ10000 (A) PWM CONT SG3525AN BZ10002 !THERMISTOR MAIN VOLTAGE CA-DB CA0026 M/LAYER CAP .1UF 63V CA0027 M/LAYER CRMC CAP 10N 100V CA0030 M/LAYER CRMC CAP 50V 4N7 CA0038R C/CAP 0.2"TAPED 100V 15PF CA0041R C/CAP 0.2"TAPED 100V 47PF CA0044R C/CAP 0.2"TAPED 100V 100PF CA0045R C/CAP 0.2"TAPED 100V 150PF CA10023...
  • Page 42 28WY DIL IC SKT DUAL WIPE TIN FF10003 PC JUMPER FF10022 SPADE TAB VERT PC 0.125C FF10030 4 POLE SKT - SPEAKON FF10046 2W 0.1 ST&F/L CONN HDR CA-CO FF10055 SKT 1X12 SIDE ENTRY FF10063 CONN. 34W BOX GOLD FF10073 HEADER 2X17 R/A FF10083 5 WAY PIN HDR.LATCH TYPE XL04-...
  • Page 43 INDUCTOR WIRE DETAIL LF0572 H20 NEOPRENE SLEEVES LF0573 H30 X 20 BLACK SLEEVE LF0596 CABLE TIE 8.0 NARROW M-C250A-01 250 & 650 SOFTWARE NA0084 M3X6MM PAN POZI BLK SCREW NA0384 M2.5X6MM PAN POZ BLK TAPTITE NA0392 SCREW PLAS NO8X3/8" BLK NA0397...
  • Page 44 BADGE - PULSE 4X300 P-C300E-01 FRONT PANEL THERM.INSUL. P-C300F-01 HEATSINK-CUT & PUNCH P-C300J-03 LID AMPLIFIER - PULSE P-C300M-01 SPACER FAN (CUT) - PULSE P-C300N-01 FAN SPACER FOAM - PULSE P-CR300C-01 BADGE - CROWN CA-FI CA-FI CA-FI XW05- CA-FI XW13- CA-FI XW10- CA-FI P-C11...
  • Page 45 PANEL SPEAKON - PULSE R-C300A-06-PF MAIN PCB ASSY.P4X300 R-C300B-03-AF FRONT PANEL PCB ASSY R-C300B-03-SM FRONT PANEL PCB SM R-CR300C-01- CROWN SPEAKON PCB C300 ASSY. R-CR300D-01- CROWN BINDING POST PCB ASSY. S-C300A-06 PCB C300 MAIN BOARD S-C300B-03 PCB C300 FRONT PANEL S-CR300C-01 PCB C300 CROWN SPEAKON BOARD.
  • Page 46 ZM10091-01 MANUAL CROWN P4X300 V1.0 ZZ2893R FILTER 100PF RFI TAPED RF1, RF2, RF3, RF4, RF5, RF6, RF7, RF8...

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