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SoundCraft CPS2000 User And Technical Manual

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SOUNDCRAFT CPS2000
Console Power Supply
User and Technical Manual
For your own safety and to avoid invalidation of the
warranty all text marked with these Warning Symbols
should be read carefully.
IMPORTANT: please read this manual carefully before
connecting your Soundcraft console power supply to
the mains for the first time.

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Summary of Contents for SoundCraft CPS2000

  • Page 1 For your own safety and to avoid invalidation of the warranty all text marked with these Warning Symbols should be read carefully. IMPORTANT: please read this manual carefully before connecting your Soundcraft console power supply to the mains for the first time.
  • Page 2 Information in this manual is subject to change without notice and does not represent a commitment on the part of the vendor. Soundcraft shall not be liable for any loss or damage whatsoever arising from the use of information or any error contained in this manual, or through any mis-operation or fault in hardware contained in the product.

  • Page 3: Table Of Contents

    Contents Introduction Mains Voltage Selection Operating Voltage Range Replacing Mains Fuse Warranty Recommendations for Installation PSU Linking Dimensions Technical Specification Circuit Description Parts List Fan Control Technical Drawings...

  • Page 5: Introduction

    Introduction Introduction...
  • Page 6 · Refer all servicing to qualified service personnel. It is recommended that all maintenance and service on the product should be carried out by Soundcraft or its authorised agents. Soundcraft cannot accept any liability whatsoever for any loss or damage caused by service, maintenance or repair by unauthorised personnel.

  • Page 7: Mains Voltage Selection

    The CPS2000 is designed for installation in a 19" rack unit, occupying 4U of rack height. Refer to the section "RECOMMENDATIONS FOR INSTALLATION" on Page 7.
  • Page 8 Mains Voltage Selector Positions 230V 200V Front and Rear Panel Views WARNING: DO NOT COVER ANY VENTILATION SLOTS, AS THIS MAY CAUSE THE EQUIPMENT TO OVERHEAT CLEAN FAN FILTERS REGULARLY CONSOLE POWER SUPPLY DC POWER OUT DC POWER OUT TO CONSOLE TO CONSOLE NO USER SERVICEABLE PARTS INSIDE NO USER SERVICEABLE PARTS INSIDE...

  • Page 9: Operating Voltage Range

    In the event of incorrect switching of the mains voltage selectors, a mains power surge or underrated fuse value, the mains fuse in the front panel will blow and the CPS2000 will not function. Switch the ON/OFF switch to the OFF position. Check the fuse and replace if necessary;...

  • Page 10: Warranty

    Equipment has been properly installed in accordance with instructions contained in Soundcraft’s manual; and b) the End User has notified Soundcraft or the Dealer within 14 days of the defect appearing; and c) no persons other than authorised representatives of Soundcraft or the Dealer have effected any replacement of parts maintenance adjustments or repairs to the Equipment;...
  • Page 11 Recommendations for Installation of the CPS 2000 Installation...

  • Page 12: Recommendations For Installation

    For the same reason, when rack-mounting it is preferable to avoid locating the unit adjacent to signal processing equipment. It should be noted that if a complete rack containing a CPS2000 unit is to be operated from a different mains supply level, then the unit should be withdrawn from the rack in order to reselect the mains voltage setting, at the same time as resetting any other equipment.
  • Page 13 Finally, some consideration should be given to the earthing arrangement of the system at the centre of which are the console and the CPS2000 (and any other Soundcraft power supply units). The console chassis is earthed, through the mains earth, via the power supply.

  • Page 14: Psu Linking

    Link the second PSU to the first as shown in the following diagram. Note that the linking cable is included when a spare CPS2000 is ordered. PSU Linking To Console DC POWER OUT DC POWER OUT TO CONSOLE TO CONSOLE...

  • Page 15: Dimensions

    Dimensions All dimensions in millimeters Installation...
  • Page 16 Installation...

  • Page 17: Technical Specification

    Technical Specification Technical Specification...
  • Page 18 MAINS INPUT VOLTAGE RANGE: RATED INPUT POWER (Max): MAINS FUSE RATING: OUTPUTS All voltage and current measurements are to be taken at the console-end of the power supply cable. OPERATING TEMPERATURE RANGE (Ambient): HUMIDITY: OVERALL DIMENSIONS: WEIGHT: Technical Specification 230/200/115/100 V AC +10% / -15% @ 50/60Hz 980 WATTS Use T10AL/250V (slow-blow).

  • Page 19: Circuit Description

    Circuit Description CAUTION:THE FOLLOWING SECTIONS ARE FOR USE BY QUALIFIED SERVICE PERSONNEL ONLY. REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT P E R F O R M A N Y S E R V I C I N G , O T H E R T H A N T H A T CONTAINED IN PREVIOUS SECTIONS, UNLESS YOU ARE QUALIFIED TO DO SO.
  • Page 20 Circuit Description INTRODUCTION. The CPS2000 power supply provides +/-17V at 16 Amps, +8V at 1.25 Amp, and +48V at 0.3 Amp. The main PCB (SC3804) is in LH and RH halves. The LH PCB carries the +17V and +48V supplies. The RH PCB carries the -17V and +8V supplies. A separate PCB (SC3817) carries the mains voltage selector switches at the front of the unit.
  • Page 21 The 723 IC is powered through R11, which allows ripple filtering by C9, and voltage protection by DZ1,2. These Zeners are not required to reduce ripple; their function is purely protective, preventing the 40V Vmax spec of the 723 being exceeded should the mains voltage rise above nominal.
  • Page 22 When the supply is switched on, it tends to stick in the second of these two states. The CPS2000 avoids this problem by implementing constant-current protection that causes complete shutdown (rather than foldback) after a fixed time delay. This is described for the +17V supply;...
  • Page 23 Undervoltage warning. The supply gives a warning indication when the mains voltage has fallen so low that regulation is about to be lost. The Headroom Indicator subsystem illuminates all the decimal points on the DPM, giving a clear signal that something is amiss. The voltage across the pass transistors is monitored by TR3;...
  • Page 24 The +48V Supply. Max current rating is 0.3 Amps. The +48V phantom supply is based on the high-voltage regulator TL783C. (REG1) The AC input is fused by F4 and fullwave rectified by BR4; C1,24 are the reservoir capacitors. The unregulated DC may rise as high as +85V on high mains.
  • Page 25 PCB (SC4032) mounted on the front heatsink bracket, with a thermal sensor pressed against the top surface of the heatsink. The CPS2000 fan control system adapts the fan speed to the power drawn. This gives a substantial reduction in fan noise under almost all circumstances; the exception being 10% high mains and maximum current drawn, which naturally sets the fan to full speed.
  • Page 26 FAULTFINDING NOTES. SAFETY: These safety notes are directed to those t e s t i n g a n d r e p a i r i n g t h i s p o w e r s u p p l y . L e g a l requirements mean that we must not encourage untrained personnel to take the lid off.
  • Page 27 Fuse Replacement The 32A fuses mounted on either side of the transformer must be replaced with identical parts only. Soundcraft part number ZD8900. F1, located on the voltage selector PCB, must be replaced with an identical part. Soundcraft part number ZD8112.
  • Page 28 Circuit Description...

  • Page 29: Parts List

    Parts List Parts List...
  • Page 30 ..... Part Number !CPS2000 WIRED TESTED PSU CHAS ..RY8009 !5X20MM T2A/250V AS FUSE !5X20MM T10A/250V AS FUSE !5X20MM T12.5A/250V AS FUSE...
  • Page 31 ......CPS2000 TEMP SENSOR WFM..
  • Page 32 ......LINK WFM(FREE ENDS)100MM pcb ass ......CPS2000 FAN CONTROL PCB ASSY ..RA4032 CPS2000 FRONT SUB PNL ASSY Ident .
  • Page 33 —- ......! 5X20MM T12.5A/250V AS FUSE ..ZD8112 pcb ......CPS2000 PSU VOLTAGE SEL PCB ..SC3817-04 .
  • Page 34 ......CAP ELEC VERT 47UF 25V TPD SKP ..CE0401 ......CAP ELEC VERT 2.2UF 50V TPD SS ..CE0416 .
  • Page 35 ......DIODE 1N4001 ......DIODE 1N4001 .
  • Page 36 ......CF RES 1/2W 5% 330R ......MF 0.25W RES 1% 22K BL .
  • Page 37 ......MF 0.25W RES 1% 10K BL ......MF 0.25W RES 1% 22K BL .
  • Page 38 CAPACITOR MOUNTONG BRKT VERT ..NZ2356 CPS2000 TO3P MOUNTING CLIP ... NZ2354 FAN GASKET 80.00MM ....NZ2357-02 HANDLE 120MM STAINLESS STEEL .

  • Page 39: Fan Control

    Fan Control Fan Control...
  • Page 40 CPS2000 Fan Control & PCB SC4032 Technical Description The later models of the CPS2000 are fitted with a fan control servo system that adapts the fan speed to the power drawn. This gives a substantial reduction in fan noise under almost all circumstances;...
  • Page 41 CPS2000 Fan Controller Circuit Diagram Fan Control...
  • Page 42 Fan Control...

  • Page 43: Technical Drawings

    Technical Drawings Technical Drawings Circuit Diagrams ED3804A Issue 9 ED3804B Issue 9 ED3804A Issue 10 ED3804B Issue 10 ED3817 Issue 4 PCB Layouts SC3804 Issue 9 SC3804 Issue 10 SC3817 Issue 4...
  • Page 44 Technical Drawings...
  • Page 45 Technical Drawings...
  • Page 46 Technical Drawings...
  • Page 47 Technical Drawings...
  • Page 48 Technical Drawings...
  • Page 49 Technical Drawings...
  • Page 50 Technical Drawings...
  • Page 51 Technical Drawings...
  • Page 52 Technical Drawings...

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