Soundcraft Cps2000 Users Manual Corel Ventura COVERPG.CHP
CPS2000 to the manual bdc22507-5466-4d8f-85d7-e0719bf9e738
2015-02-02
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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. © Harman International Industries Ltd. 1997, 2005 All rights reserved Parts of the design of this product may be protected by world-wide patents. Part No. ZM0198-05 Soundcraft is a trading division of Harman International Industries Ltd. 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. No part of this manual may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, electrical, mechanical, optical, chemical, including photocopying and recording, for any purpose without the express written permission of Soundcraft. 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. Harman International Industries Ltd. Cranborne House Cranborne Road Potters Bar Herts. EN6 3JN England Tel: Fax: 01707 665000 01707 660482 www.soundcraft.com Contents Introduction 1 Mains Voltage Selection 2 Operating Voltage Range 4 Replacing Mains Fuse 4 Warranty 5 Recommendations for Installation 7 PSU Linking 10 Dimensions 11 Technical Specification 13 Circuit Description 15 Parts List 25 Fan Control 35 Technical Drawings 39 i ii Introduction Introduction 1 IMPORTANT SAFETY INSTRUCTIONS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 2 Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with a dry cloth. Do not block any ventilation openings. Ventilation should not be impeded by covering the ventilation openings with items such as newspapers, table cloths, curtains etc. Install in accordance with the manufacturer’s instructions. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. Do not defeat the safety purpose of a polarised or grounding type plug. A polarised plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles and the point where they exit from the apparatus. Only use attachments/accessories specified by the manufacturer. Use only with the cart, stand, tripod, bracket or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over. Unplug this apparatus during lightning storms or when unused for long periods of time. 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. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped. No naked flame sources, such as lighted candles, should be placed on the apparatus. WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. Do not expose the apparatus to dripping or splashing and do not place objects filled with liquids, such as vases, on the apparatus. Terminals marked with the lightning symbol are hazardous live and the external wiring connected to these terminals requires installation by an "instructed person" or the use of ready made leads or cords. THIS APPARATUS MUST BE EARTHED. Under no circumstances should the safety earth be disconnected from the mains lead. The mains supply disconnect device is the mains plug. It must remain accessible so as to be readily operable when the apparatus is in use. If any part of the mains cord set is damaged, the complete cord set should be replaced. The following information is for reference only. The wires in the mains lead are coloured in accordance with the following code: Earth (Ground):Green and Yellow (US - Green/Yellow) Neutral:Blue (US - White) Live (Hot):Brown (US - Black) As the colours of the wires in the mains lead may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows: The wire which is coloured Green and Yellow must be connected to the terminal in the plug which is marked with the letter E or by the earth symbol The wire which is coloured Blue must be connected to the terminal in the plug which is marked with the letter N The wire which is coloured Brown must be connected to the terminal in the plug which is marked with the letter L Ensure that these colour codes are followed carefully in the event of the plug being changed This unit is capable of operating over a range of mains voltages as marked on the rear panel. It is important to ensure that the correct mains fuse is fitted before switching on the unit. Introduction Introduction WARNING: THIS APPARATUS MUST BE EARTHED The CPS2000 is a linear power supply which, like other linear supplies, produces DC voltages by rectifying, smoothing and regulating AC voltages from the secondary windings of a mains transformer. Soundcraft mixing consoles employ a number of dc voltage supply levels in their operation and these are all provided at the output of each supply unit. In regulating these voltages there is considerable heat generated, the dissipation of which is achieved through a substantial heat sink on each side of the unit. Two fans are incorporated which draw air over the heatsinks to provide adequate heat dissipation for the regulators and reduce the outer case temperature. 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. LEDs are provided on the front panel to show the operation of the regulating circuits, and a digital voltmeter monitors the mains supply voltage. The CPS2000 may be linked to a second CPS2000 to provide automatic power backup in the event of one of the units failing. MAINS VOLTAGE SELECTION. Special attention should be paid to the following information: Do not change the voltage setting without first turning the unit off and unplugging the mains lead. Ensure that the cover plate over the mains voltage selection switches is replaced after correct voltage selection has been made and that the cover plate is positioned to show the correct mains voltage. This unit is capable of operating over a wide range of mains voltages by means of a comprehensive set of selectable voltage settings. It is important to ensure that the correct voltage setting has been selected for the level of local mains voltage supply, for safe, uninterrupted operation of the unit. There are two mains voltage selection switches behind a cover plate on the front of the unit. Voltage selection is achieved by moving the switches using a screwdriver blade, into the correct positions, as shown by the symbols marked on the front panel. In this way the unit is set up for operation at one of the following ranges of mains supply: NOMINAL VOLTAGE Introduction OPERATING VOLTAGE RANGE Vrms AC Vrms AC 230 200 115 100 195-253 170-220 98-126 85-110 3 Mains Voltage Selector Positions 230V 115V 200V 100V Front and Rear Panel Views ACCESS TO MAINS VOLTAGE SELECTION SWITCHES UNDER COVER PLATE. WARNING: DISPLAY MAINS VOLTAGE SETTING IN SIDE WINDOW WHEN REFITTING COVER PLATE. + 48V WARNING: DO NOT COVER MAINS VOLTAGE ENSURE CORRECT MAINS VOLTAGE SETTING AND CORRECT FUSE BEFORE CONNECTING MAINS SUPPLY. DO NOT SWITCH MAINS VOLTAGE SETTINGS WHILE MAINS SUPPLY IS CONNECTED. ANY VENTILATION SLOTS, AS THIS MAY CAUSE THE EQUIPMENT TO OVERHEAT + 8V HIGH TEMP - 17V +17V 115V 230V 230V CLEAN FAN FILTERS REGULARLY 115V DOTS LIGHT WHEN MAINS LOW MAINS VOLTAGE SELECTION POWER ON 200V 1 100V 200V 100V OFF 0 MAINS FUSE: 100V/230V USE T10.0A/250V CAUTION: TO REDUCE THE RISK OF FIRE, REPLACE WITH SAME TYPE FUSE ONLY. CONSOLE POWER SUPPLY CPS 2000 DC POWER OUT TO CONSOLE DC POWER IN FROM STANDBY SUPPLY WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE DO NOT COVER ANY VENTILATION SLOTS AS THIS MAY CAUSE THE EQUIPMENT TO OVERHEAT NO USER SERVICEABLE PARTS INSIDE ATTENTION: AFIN DE REDUIRE LE RISQUE DE FEU, REMPLACER SEULEMENT AVEC FUSIBLE DE MEME TYPE. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR NO USER SERVICEABLE PARTS INSIDE PIN 1, 2, 3, 4 +17V 16A 5, 6, 7, 8 +0V 9, 10, 11, 12 -17V 16A 13 +48V 0.5A 14, 15 CHASSIS GROUND 16, 17 0V 18 +8V 1.25A 19 NOT USED ( BOTH DC CONNECTORS HAVE IDENTICAL PINOUT ) 4 Introduction OPERATING VOLTAGE RANGE It is very important to use the correct mains voltage selection. A wide operating range of mains voltages is provided to enable the unit to function down to only 85Vrms on the mains supply. This facility is incorporated to overcome the problems that some power supplies have with internal regulation when operating from a poorly regulated mains supply. Do not operate the PSU with a consistently high (above nominal) reading on the mains meter. Operation with the m ai ns hi gher than +1 0% may cause serious damage The mains meter is essentially a peak-reading device, as it is the peak value of the mains waveform which is the most important factor in providing the correct mains voltage to the power supply. For this reason, and because with long power cables it is common for the mains waveform to become distorted, the indication of the meter may not agree with readings taken with the usual types of quasi-RMS reading testmeter. Note that the meter measures the voltage actually available at the PSU, and therefore will indicate any voltage drop on mains supply wiring. REPLACING MAINS FUSE. 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; also check that the voltage selection is correct for the mains supply level before switching the unit ON again. To avoid risk of fire replace only with the correct value fuse, as indicated on the unit. In the event of repeated failure of the mains fuse consult the Soundcraft dealer from where the unit was purchased. This unit contains no user serviceable parts. Refer all servicing to a qualified service engineer, through the appropriate Soundcraft dealer. Introduction 5 Warranty 1 Soundcraft is a trading division of Harman International Industries Ltd. End User means the person who first puts the equipment into regular operation. Dealer means the person other than Soundcraft (if any) from whom the End User purchased the Equipment, provided such a person is authorised for this purpose by Soundcraft or its accredited Distributor. Equipment means the equipment supplied with this manual. 2 If within the period of three years from the date of delivery of the Equipment to the End User it shall prove defective by reason only of faulty materials and/or workmanship to such an extent that the effectiveness and/or usability thereof is materially affected the Equipment or the defective component should be returned to the Dealer or to Soundcraft and subject to the following conditions the Dealer or Soundcraft will repair or replace the defective components. Any components replaced will become the property of Soundcraft. 3 Any Equipment or component returned will be at the risk of the End User whilst in transit (both to and from the Dealer or Soundcraft) and postage must be prepaid. 4 This warranty shall only be available if: a) the 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; and d) the End User has used the Equipment only for such purposes as Soundcraft recommends, with only such operating supplies as meet Soundcraft’s specifications and otherwise in all respects in accordance Soundcraft’s recommendations. 5 Defects arising as a result of the following are not covered by this Warranty: faulty or negligent handling, chemical or electro-chemical or electrical influences, accidental damage, Acts of God, neglect, deficiency in electrical power, air-conditioning or humidity control. 6. The benefit of this Warranty may not be assigned by the End User. 7. End Users who are consumers should note their rights under this Warranty are in addition to and do not affect any other rights to which they may be entitled against the seller of the Equipment. 6 Introduction Recommendations for Installation of the CPS 2000 Installation 7 Recommendations for Installation The CPS2000 power supply is provided with front panel fixing holes for 19" rack-mounting and will occupy 4U of rack space. Rear support should be provided when fitted in a 19" rack. The CPS2000 is a heavy unit (30kg,) and should be regarded as a two-man lift. Take suitable precautions when lifting As with any power supply that contains a large mains-voltage transformer, it is preferable to provide a degree of physical isolation of the unit from other electronic equipment, particularly that which carries low level audio signals, to avoid any possible hum pick-up. For this reason the unit is used with a long (6.5 metres) output cable to enable it to be positioned away from the mixing console. 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. The other important consideration when rack-mounting the unit is the need for natural convection of air over the case and an unrestricted air flow through the unit. Note that air is drawn in at the front of the unit and expelled through the rear panel. Good ventilation BELOW the unit, in the floor or back of the rack, and similarly ABOVE the unit, at the top of the rack, will ensure a path for continuous air flow. Other equipment in the rack which is known NOT to produce a significant amount of heat should be mounted BELOW the unit. Equipment that also relies on good air flow within the rack (ie. most power amplifiers and other power supplies) should be given due consideration and some space should be provided between such units and between these and the CPS2000 unit. Forced convection, by means of a fan-tray, may be desirable in this situation. The CPS2000 will operate as a free-standing unit without requiring any special cooling arrangement, but should not be allowed to be accidentally or deliberately covered over in any way. Do not operate the unit with the top cover removed as this exposes hazardous voltages. The filters on the cooling fans must be inspected regularly and cleaned if necessary to maintain good airflow through the unit. This will be particularly important if the unit is used in a dusty environment. 8 Installation 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. When rack-mounting the CPS2000(and any other Soundcraft power supply units) care should be taken to avoid any possible ‘ground loops’ in the system which would introduce audible hum to otherwise clean audio signals. Ground loops may occur where signal processing equipment, patched to the console, has its signal earth commoned to the equipment chassis. The ground loop is formed if this chassis and the power supply chassis are in electrical contact through the fixing rails they share in the rack. To avoid this situation, standard isolating washers may be employed when fixing the power supply (or supplies) or any other unit into the rack. W A R N I N G : THIS APPARATUS MUST BE EARTHED. Under no circumstances should the mains earth be disconnected from the CPS2000 power supply unit. GENERAL As with all electrical/electronic equipment care should be taken when handling this unit. Avoid general mishandling and do not drop. Avoid storage and operation in dusty locations and do not expose to corrosive atmospheres. To avoid risk of fire do not expose this unit to rain or moisture. Retain all packaging for transportation in the event of the unit requiring servicing. Retain this manual safely, along with all other relevant documents. For touring/mobile transportation it is advisable to install the CPS2000 in a flight case to provide mechanical protection. Refer to your Soundcraft dealer for a suitable case. Where the CPS2000 is enclosed in a touring case, provision must be made for adequate ventilation to the rear of the unit to ensure unrestricted supply of air for the cooling fan. Use only the 16 Amp mains lead supplied, no other type is to be used. Use only the DC output lead supplied, no other type is to be used. Installation 9 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. To Console DC POWER OUT TO CONSOLE DC POWER IN FROM STANDBY SUPPLY WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN DO NOT COVER ANY VENTILATION SLOTS AS THIS MAY CAUSE THE EQUIPMENT TO OVERHEAT AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR NO USER SERVICEABLE PARTS INSIDE NO USER SERVICEABLE PARTS INSIDE PIN 1, 2, 3, 4 +17V 16A 5, 6, 7, 8 +0V 9, 10, 11, 12 -17V 16A 13 +48V 0.5A 14, 15 CHASSIS GROUND 16, 17 0V 18 +8V 1.25A 19 NOT USED ( BOTH DC CONNECTORS HAVE IDENTICAL PINOUT ) DC POWER OUT TO CONSOLE DC POWER IN FROM STANDBY SUPPLY WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE DO NOT COVER ANY VENTILATION SLOTS AS THIS MAY CAUSE THE EQUIPMENT TO OVERHEAT NO USER SERVICEABLE PARTS INSIDE CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR NO USER SERVICEABLE PARTS INSIDE PIN 1, 2, 3, 4 +17V 16A 5, 6, 7, 8 +0V 9, 10, 11, 12 -17V 16A 13 +48V 0.5A 14, 15 CHASSIS GROUND 16, 17 0V 18 +8V 1.25A 19 NOT USED ( BOTH DC CONNECTORS HAVE IDENTICAL PINOUT ) 10 Installation Dimensions All dimensions in millimeters Installation 11 12 Installation Technical Specification Technical Specification 13 Technical Specification MAINS INPUT VOLTAGE RANGE: 230/200/115/100 V AC +10% / -15% @ 50/60Hz RATED INPUT POWER (Max): 980 WATTS MAINS FUSE RATING: Use T10AL/250V (slow-blow). OUTPUTS DC. VOLTAGE RAIL MAX. OUTPUT CURRENT +17V -17V 16.00 AMPS 16.00 AMPS +48V 0.30 AMPS +8V 1.25 AMPS All voltage and current measurements are to be taken at the console-end of the power supply cable. OPERATING TEMPERATURE RANGE (Ambient): -10 TO +40°C. HUMIDITY: Similar unit tested at 0-90% RH non-condensing +/-5% Relative Humidity at 40 °C for 16 hours. Load switched between 20% and 100% at regular 30 minute intervals. OVERALL DIMENSIONS: HEIGHT: WIDTH: 177.00mm. (4U) Chassis Front panel DEPTH: (excl. handles) 440.00mm. 482.60mm. 436.00mm. WEIGHT: (Excl. packing): 30Kg 14 Technical Specification Circuit Description CAUTION:THE FOLLOWING SECTIONS ARE FOR USE BY QUALIFIED SERVICE PERSONNEL ONLY. TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT PERFORM ANY SERVICING, OTHER THAN THAT CONTAINED IN PREVIOUS SECTIONS, UNLESS YOU ARE QUALIFIED TO DO SO. Circuit Description 15 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. THE +/- 17V RAILS. SC3804 This consists of two identical +17V supplies connected together to give +/-17V. Each 17V supply is a linear regulator with conventional fullwave rectification and a large (100,000uF) reservoir capacitor. This is combined with a second power supply that powers the driver transistors, the cooling fan, and the digital mains meter. The main series pass elements are 250W discrete bipolar transistors connected in parallel with suitable current-sharing precautions and mounted on a fan-cooled heatsink. The voltage reference and servo control amplifier is provided by a 723 regulator IC. The circuitry of the +17V regulator is described in detail below: The +17V Supply. (LH PCB) The transformer secondary is fused by means of 32 Amp Safeclip (BS88) fuses mounted in holders on the floor of the chassis. They are NOT intended for customer replacement. A spare fuse will be provided, but it is stressed that these fuses will only blow in the event of catastrophic failure, such as a major short in the wiring or a failed bridge rectifier. The fullwave bridge rectifier is mounted on the heatsink, at the hottest end as it is the most heat-tolerant of the semiconductors. The reservoir capacitors are mounted by clips on the floor of the chassis. For safety reasons, the reservoir capacitor is discharged by bleeder resistor R9 at switchoff; this takes about 30 seconds. A red warning LED on the PCB is on whenever the capacitor is charged. The unregulated DC is approx +26 to +29V. The 723 IC contains a 7.15V nominal Zener diode, defining the voltage that appears at Pin 6. Zener references generate appreciable noise, and this, plus any ripple, is filtered out by R10,C10. R10 is in series with the positive input of the servo opamp (Pin 5) and is made roughly equal in resistance to the feedback divider R16,17 etc to minimise bias-current offsets. The feedback divider R16,17,18 & PR1 derives a fraction of the output voltage and delivers it to the negative input of the servo opamp. (Pin 4) The negative feedback keeps this point also at 17.15V, so the actual output voltage is determined by the feedback divider ratio, which is trimmed over a narrow range by PR3. The output of the servo opamp controls the output through TR8, which is an emitter follower driving the parallel pass devices TR4,5,6. R41 is included for diagnostic purposes, so that the current being supplied by the 723 (only a few mA) can be measured. The power supply to TR8 is taken from the +12V supply. This has its 0V side connected to the positive unregulated DC supply of 26 - 29V, (at nominal mains) giving a total voltage of approx 38 - 41V for the driver; this also powers the 723 IC. This subrail markedly reduces the minimum drop across the pass elements and therefore increases the efficiency. 16 Circuit Description 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. The current through the pass devices TR4-7 is shared equally due to the current-sharing resistors R35-45. The drop across these at full load is approx 200mV which is more than enough to swamp Vbe differences in the main transistors. 50 Amp Schottky diode D7 on the output allows supplies to be paralleled for redundancy. The Mains Voltage Meter. The incoming mains voltage is continuously indicated on the front panel by a 3.5 Digit Panel Meter. (DPM) This is powered from a +5V supply derived from the +12V subrail by 7805 regulator REG2. The +5V supply is reduced to +2.5V by R30,31, and buffered by IC2-A to generate a half-rail for the DPM input. The incoming mains is monitored by differential amplifier IC1-A, which looks at the voltage between Live and Neutral; this avoids problems with having one side of the meter connected to Earth, which is often not at quite the same potential as Neutral. The Voltage is picked off via two special BSI safety-approved 680K resistors on the voltage select PCB (SC3817) which connect to CN3. The circuitry around IC1-A (R21-24) gives unity gain, but the presence of the 680K resistors on the input gives suitable scaling of the 50Hz signal. The signal is applied to precision full-wave rectifier IC1-B, IC2-B via DC-blocking cap C5; this circuit is biased by the +2.5V halfrail. The rectified output is smoothed by C6 and scaled by R39 and PR1 before applying it to the DPM input on CN1 Pin 8. (IN HI) Note the DPM has a differential input, so the cold side (IN LO, Pin 7) is connected to the +2.5V halfrail. The Mutual Shutdown System. Equipment containing some kinds of op-amp is vulnerable to damage when only one of the +/-17V rails fails, as in this case excessive supply currents can be drawn, damaging fuse resistors on the modules. When both 17V supplies are working normally, current flows through DZ8, OPTO1, and across to the RH PCB. OPTO1 is on so the base drive to TR22 is shunted away and the 723 works normally. Likewise, TR24 is kept on via R100, and ensures TR28 stays off. If either supply fails there is insufficent voltage to keep DZ8 conducting, and current flow ceases in the mutual shutdown line. TR22 is turned via the special supply generated by D13, C26, and the internal node of the 723 IC3 is pulled down to ground, turning it off. Likewise, in the -17V supply, TR28 is turned via the special supply generated by D14, C25, and the internal node of IC4 is pulled down to ground, turning it off. C27,30 delay the action of mutual shutdown sufficiently to allow the supplies to start, as they may not rise to working voltage at exactly the same rate. Circuit Description 17 When shutdown has ocurred, the supply is reset by turning the mains briefly off and on. R100 discharges C25 so that the circuit is ready for use at the next switch-on. The special supplies generated by D13, C26, and D14, C25, are designed to discharge very quickly at power-off, and it should not be necessary to turn the PSU off for more than a second to reset it. Overcurrent Protection. The simplest form of overcurrent protection is the constant-current system; when an attempt is made to draw excessive current, the output voltage is reduced so that no more than a fixed maximum can be drawn. The high current capability of this PSU means that constant current protection alone is not practical as the dissipation in the pass devices is too high for the cooling system to deal with, and in the long term they will overheat. The standard answer to this problem is foldback current-limiting. Once again the output voltage is reduced to prevent excessive current flow, but it is more severely reduced so that the current flowing is not limited to a fixed maximum, but to a value lower than that which triggered the protection originally. This greatly reduces the dissipation in the supply in protection mode. This system accomplishes its task, but can give trouble as the supply may work perfectly into a resistive test load but not start into a real console load. The problem is that a mixing console is essentially a constant-current load; as the supply voltage is increased, almost the full current is drawn when only 2 or 3 volts are applied. There are thus two stable states, with rails normal and the full current drawn, or with the supply shut down to the few volts that will cause the foldback current to flow. 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; the -17V supply operates identically. The first part of the problem is to measure the output current without dropping 0.6V across a resistor to turn on a protection transistor. At 16 Amps the losses in this drop would be unacceptable. Therefore supply current is measured by the voltage drop across 0.05R resistors (R35,36 in parallel) which carry a quarter of the output current and so drop 200 mV at full load. This is compared with a 200mV reference voltage across R86, derived from bands-gap reference IC8 which sits on the output rail, by differential amplifier TR18,19. When the input to TR19 exceeds the 200mV applied to TR18, TR19 conducts and pulls down the internal 723 node at pin 13, reducing the output voltage. This causes current to cease in the mutual shutdown line, as described above, and after a brief delay caused by C27,30, both 17V supplies are shut down. ISSUE 8 operates exactly as above. The only difference is that the differential amplifier TR18,19 has its tail fed from a negative subrail at approx -26V. This subrail is generated from the AC input to the PCB by charge-pump C41,42,D22,23. The resulting negative voltage is stabilised by 8V2 Zener DZ10, and applied to R73. This keeps the tail current of TR18,19 more constant, and so maintains the transconductance (current out for voltage in) at a higher level, giving closer feedback control of current-limiting under extreme conditions. The RH PCB operates identically. 18 Circuit Description 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; when this voltage falls too low, TR3 turns off, turning off TR1. TR1 collector is then pulled up to +40V by R26, charging C7 through D5, and so turning on TR2. This connects the DPM decimal point connections to the local 0V (actually +26 TO +29V above supply 0V) via current-limiting resistors R32-34. The peak-hold action of D5/C7 is required as the voltage across the pass transistors includes a large ripple content that would leave the decimal points rather dim if they were being strobed at 100 Hz. An identical circuit (TR9, TR10) monitors headroom in the -17V supply. The voltage across the pass transistors is monitored by TR10. When this voltage falls too low, TR10 turns off, turning off TR9. TR9 collector is connected to the LH PCB via connectors CN8-CN7, and the cessation of current drawn indicates low headroom. On the LH PCB, when this current ceases D12 anode is pulled high by R78, and TR2 turns on, illuminating the decimal points on the meter. The -17V Supply. (RH PCB) The actual 17V section of this is identical to that in the +17V section. The +12V subrail circuitry is much simpler as it only provides power for the driver TR11, the 723, and the fan. There is no mains meter circuitry here. The Temperature Protection System. This is designed to protect the +/-17V rails only. The +48V and +8V regulators incorporate internal thermal protection, and in any case, their heat dissipation is very small compared with the heatsink size. The +/-17V rails, however are vulnerable to blocked cooling vents or fan failure, so protection is provided that shuts down the 17V rails if the TO3 device cans exceed 100 degC. The thermal sensor on the RH heatsink is LM35DZ TR31. It outputs 10mV per degreeC above freezing point (0 degC) and applies it to IC5-B non-inverting input. IC5-B is used as a comparator, with R114,106 giving a small amount of hysteresis to prevent dither or oscillation. IC reference TR29 produces a stable 1.237V which is reduced to 1.00V by R104,112. This is applied to the inverting inputs of IC5-A,B as the shutdown temperature reference, and represents 90 degC at the TO3 can top*. TR27 senses the temperature of the LH heatsink. * Temperature shutdown takes place at 100 degC on some earlier issue PCB’s. If either heat sensor exceeds 100 degC the output of the associated op-amp goes high, applying voltage to the top of R109, and enabling the relaxation LED-flashing oscillator IC6-B. LED7 flashes at approx 2 Hz. If JMP2 is fitted in the "ON" position, shutdown of the +/-17V rails is also implemented. TR30 is turned on via R117, which turns on TR28, and shuts down the -17V supply. The mutual shutdown system then also shuts down +17V. If JMP2 is in the "OFF" position, only the LED flashing occurs. Circuit Description 19 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. The TL783C maintains a fixed 1.27 V between its ADJ and OUT pins, so the adjustable voltage-divider R1-PR2-R2 gives an output of approx 48V. This can be finely adjusted by PR2. The divider current is also used to power the rail indicator LED3, minimising the current wasted inside the regulator circuit. An output current of 0.5A and a wide (+10/-20%) mains range means that a TL783C alone is only marginally capable of handling the power dissipation. Therefore preregulator TR16,17, working as an emitter-follower biased from the +48V output by zener DZ5, absorbs some of the voltage drop, so that only approx 62V appears on the TL783C input. C28 ensures HF stability of REG1. Two protection diodes are included. D1 protects the regulator from reverse voltage if there is a charged capacitor across the output but the voltage on C1,24 has collapsed. D2 prevents the ADJ pin from rising above the OUT pin (due to the charge on C2) if the output is shorted. Conventional diode D6 on the output allows supplies to be paralleled for redundancy. The +8V Supply. Max current rating 1.25 Amps. This supply is primarily intended for powering console internal computers; it will be regulated down to +5V inside the console. The AC input is fused by F4 and fullwave rectified by BR4. The unregulated DC is about +15V on nominal mains. The LM317T regulator maintains a fixed 1.25V between its ADJ and OUT pins, so fixed voltage-divider R68,69 gives an output of approx 8.4 V. C23 reduces output ripple from 1 mV to approx 180 uV at full load. Two protection diodes are included. D9 protects the regulator from reverse voltage if there is a charged capacitor across the output but the voltage on C20,21 has collapsed. D10 prevents the ADJ pin from rising above the OUT pin (due to the charge on C23) if the output is shorted. Conventional diode D11 on the output allows supplies to be paralleled for redundancy. Mains Voltage Select PCB. SC3817 This PCB (SC3817) carries the inrush suppressor and two DPCO switches that select the transformer primary connections to suit the incoming mains voltage. The first switch A selects between EUROPE and USA/JAPAN settings. The second switch B selects high and low variations on this: 20 Mains Mains Nominal Dropout Dropout Switch A Switch B Mains Voltage Voltage Circuit Description Setting Setting Voltage Spec’d Measured EUROPE 230/115 230 195 186 EUROPE 200/100 200 170 164 USA/JAPN 230/115 115 98 95 USA/JAPN 200/100 100 85 85 Note that the dropout voltages in the rightmost column were measured on a CPS2000, and are significantly lower than the guaranteed dropout specification of -15%. Fan Control PCB. SC4032. Thermostatic fan control was fitted to the CPS2000 from February 1999. The controller is a separate 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. The PCB (with associated mounting bracket) may be retrofitted to existing CPS2000 units. The servo circuit consists of opamp IC1-A, temperature sensor IC5, shunt regulator IC4, and fan control devices TR7,TR10. IC4 maintains 2.50V between its "anode" and "cathode"; this is the precise voltage that drives the reference chain R53,55. TR8 also uses this voltage to set its emitter at 4.4V above ground; this keeps IC1’s inputs within their common-mode range. Thus both ends of the voltage divider R53-R55 are fixed at defined voltages. LM35DZ temperature sensor IC5 outputs 10mV per degreeC above freezing point (0 degC) and applies it to IC1-A non-inverting input. The desired heatsink temperature is set at the junction of R53,55, which sits at +5.0V approx. This is 600mV above the +4.4V rail, and so represents 60 degC. R52,57 set the servo loop gain. This is designed to be safely below the level at which slow thermal oscillations would occur. R56,D19 increase the loop gain when IC1-A output is below 4V. This prevents the fan sitting for long periods in a not-quite-running state where it consumes current but does not rotate. The voltage range 1-4V where this occurs is thus skipped over quickly. The fan is driven through feedback amplifier TR7,10, which has a voltage gain of 1.3 times. This allows the fan to be driven over its full operating voltage range despite the output saturation limits of IC1-A. This gives improved cooling at high temperatures and mains voltages. The CPS2000 thermal shutdown system is quite separate and has no connection with this PCB. Circuit Description 21 FAULTFINDING NOTES. SAFETY: These safety notes are directed to those testing and repairing this power supply. Legal requirements mean that we must not encourage untrained personnel to take the lid off. +/- 17V RAILS. 1) A convenient position for attaching a test meter to 0V is the top leg of bleeder resistor R9 (top leg of R47 on RH PCB) Remember these resistors run hot. 2) If one side of the +/-17V supply is not working, the mutual shutdown system will close down both sides of the supply. This makes faultfinding difficult as it is often not obvious which side has failed. The mutual shutdown can be disabled by putting on jumpers JMP1 & JMP3 on PCBs at Issue 6 and above. IT IS ESSENTIAL THAT THESE JUMPERS ARE REMOVED AFTER SERVICING IS COMPLETED! FAILURE TO DO THIS MAY CAUSE SEVERE CONSOLE DAMAGE IF ONLY ONE 17V RAIL SHUTS DOWN. 3) If the wireform connecting the two PCBs is disconnected, the mutual shutdown will close down both sides of the supply. The Headroom Alarm dots will also show on the DPM as an active low from the RH PCB is required to suppress them, and this is now missing. 4) If there is no power to the 723 IC (eg if R11 or R48 is open-circuit) the output will remain low, but no damage occurs. 5) It is possible to swop over the two 2-pin connections on the LH PCB in error. The fan will not run, but no circuit damage occurs. +48V SUPPLY. 1) If TR17 fails short-circuit, the regulator will appear to work, but since all voltage is dropped across the TL783 regulator, this will overheat and shut down at high currents. The TL783 should not be damaged if this is the only fault present. 2) If zener DZ5 fails short-circuit, the regulator will not turn on, and there will be only 300 mV approx at the output. 3) As usual, the unregulated supply to the +48V regulator can reach +90V, and should be treated with some respect. +8V SUPPLY. 1) This is a completely standard IC regulator circuit. The regulator REG3 is the only part that is likely to fail. 2) This supply contains mains voltages on the voltage select PCB, the mains switch, etc, and the usual precautions must be taken. 3) The main reservoir capacitors have a capacity of one tenth of a Farad, and are charged to +26V. 22 Circuit Description THIS IS DANGEROUS. The danger lies not in the voltage, but in the enormous currents that will flow if the capacitor terminals are shorted. A small screwdriver will simply disappear in a violent explosion. The main bodily danger is from metal watchstraps, etc. Serious burns are very likely if these contact the capacitor. For safety reasons, the reservoir capacitors are discharged at switchoff by bleeder resistors R9 and R47; this takes about 30 seconds. Red warning LEDs on the PCB are ON when the capacitors are charged. 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. Circuit Description 23 24 Circuit Description Parts List Parts List 25 Spare Parts Notes: 1) The ‘Module/PCB Assemblies’ section is indented to show those items which are part of another, higher level, item. 2) Some of the descriptions are preceded by one of the following 3 symbols: # - STATIC SENSITIVE. Anti-static precautions must be taken whilst handling this part. ! - SAFETY CRITICAL PART. A part of a different type may not be substituted. @ - A part from a specific Manufacturer. Using an equivalent from another manufacturer may lead to loss of performance. Top-Level Structures CPS2000 POWER SUPPLY Description RW8009 . . . . . . . . . . . . . . . . . . . . . Part Number !CPS2000 WIRED TESTED PSU CHAS . . . . . . . . RY8009 !5X20MM T2A/250V AS FUSE . . . . . . . . . . ZD8110 !5X20MM T12.5A/250V AS FUSE . . . . . . . . . . ZD8112 !CPS2000 FUSE 32A BS88 CPS2000 USER&TECH GUIDE 26 . . . . . . . . . . . ZD8102 !5X20MM T10A/250V AS FUSE . . . . . . . . . . . . ZD8900 . . . . . . . . . . ZM0198 Parts List MAIN ASSEMBLIES ! CPS2000 WIRED TESTED PSU CHAS Ident . . . . . . . . . . . . . . . . . . . . . . . . . . Description RY8009 . . . . . . . . . . . . . . . . . Part Number —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80MM FAN FILTER ASSY . . . . . . . . HZ2211 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 PSU CVR PLATE —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 LID . . . . . . . PB0720-02 . . . . . . . . . . . PH1402-03 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 FRONT PNL . . . . . . . . PJ1508-04 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 WIRED CHASSIS ASSY . . . . . RS5978 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 TEMP SENSOR WFM. . . . . . . . RV3952 CPS2000 WIRED CHASSIS ASSY Ident . . . . . . . . . . . . . . . . . . . . . . . . . . Description RS5978 . . . . . . . . . . . . . . . . . Part Number —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 PSU TRANS CLAMP PLATE . . . . PF0646-01 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 TX GUARD PLATE . . . . . . PK2563-01 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 LH MODULE ASSY . . . . . . RS5974 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 RH MODULE ASSY . . . . . . RS5975 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 FRONT SUB PNL ASSY —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 CHASSIS ASSY . . . . . RS5976 . . . . . . . RS5977 pcb . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 STAR POINT PCB . . . . . . . SC4066-01 W/Form . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 TX WFM ASSY . . . . . . . . RV3656 W/Form . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 MNS INLT TO MNS SWT WM. . . . RV3657 W/Form . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 MNS TO VOL SEL PCB WFM . . . RV3659 W/Form . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 MAINS METER WFM W/Form . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 LH/RH PCB LINKING WFM . . . . RV3661 W/Form . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 DC OUTPUT WFM W/Form . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 OV LINK WFM W/Form . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 RESERVR CAP TO PCB WFM . . . RV3664 W/Form . . . . . . . . . . . . . . . . . . . . . . . . CHASSIS EARTH WFM 600MM . . . . . . RV3660 . . . . . . RV3662 . . . . . . . . RV3663 . . . . . RV3695-600 CPS2000 LH MODULE ASSY Ident . . . . . . . . . . . . . . . . . . . . . . . . . . Description RS5974 . . . . . . . . . . . . . . . . . Part Number —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2WY MTHD .1" FML . . . . . . . . . FF0585 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . PAPST 12V 2.4W 80MM FAN . . . . . . . HD0005 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 EXTRUDED HEATSINK —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 PSU PCB ASSY . . . . . PN1260-03 . . . . . . . RI3804 or RJ3804 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30CMX30CM THERMALLY CNDCTV SHT . . ZC0223 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . TO-220 SIL PAD SELF ADHESIVE . . . . . ZC0250 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . SIL PAD 900 .009"THK ADH BACKE . . . . . ZC0251 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . TO3 INSULATING WASHER D7 (on SC3804-09) . . . . . . . ZC10029 . . . . . . . . . . . . . . . . . DIODE MBR5025L 50A 25V SCK . . . . . . BA0023 D7 (on SC3804-10) . . . . . . . . . . . . . . . . . . . DIODE MBR6045WT. . . . . . . . . . . . . . BA10018 REG1 . . . . . . . . . . . . . . . . . . . . . . . . . VOLTAGE REG TL783CKC REG2 . . . . . . . . . . . . . . . . . . . . . . . . . V.REG LM7805 +5V 1A . . . . . . . BE0455 . . . . . . . . . BE0424 TR4 . . . . . . . . . . . . . . . . . . . . . . . . . . MJ15024 NPN POWER TRANS TO3 . . . . . BD0373 TR5 . . . . . . . . . . . . . . . . . . . . . . . . . . MJ15024 NPN POWER TRANS TO3 . . . . . BD0373 TR6 . . . . . . . . . . . . . . . . . . . . . . . . . . MJ15024 NPN POWER TRANS TO3 . . . . . BD0373 TR7 . . . . . . . . . . . . . . . . . . . . . . . . . . MJ15024 NPN POWER TRANS TO3 . . . . . BD0373 TR8 . . . . . . . . . . . . . . . . . . . . . . . . . . MJL3281A DRIVER TRANSISTOR . . . . . BD0399 . . . . . . . . . . . . . . . . . . . . . . . . . MJL3281A DRIVER TRANSISTOR . . . . . BD0399 TR17 W/Form . . . . . . . . . . . . . . . . . . . . . . . . LINK WFM(FREE ENDS)100MM . . . . . RV4084-100 pcb ass . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 FAN CONTROL PCB ASSY . . . . RA4032 Parts List 27 CPS2000 RH MODULE ASSY Ident . . . . . . . . . . . . . . . . . . . . . . . . . . Description RS5975 . . . . . . . . . . . . . . . . . Part Number —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2WY MTHD .1" FML . . . . . . . . . FF0585 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . PAPST 12V 2.4W 80MM FAN . . . . . . . HD0005 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 EXTRUDED HEATSINK —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 PSU PCB ASSY . . . . . PN1260-03 . . . . . . . RI3804 or RJ3804 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30CMX30CM THERMALLY CNDCTV SHT . . ZC0223 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . TO-220 SIL PAD SELF ADHESIVE . . . . . ZC0250 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . SIL PAD 900 .009"THK ADH BACKE . . . . . ZC0251 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . TO3 INSULATING WASHER D8 (on SC3804-09) . . . . . . . ZC10029 . . . . . . . . . . . . . . . . . DIODE MBR5025L 50A 25V SCK . . . . . . BA0023 D8 (on SC3804-10) . . . . . . . . . . . . . . . . . . . DIODE MBR6045WT. . . . . . . . . . . . . . BA10018 REG3 . . . . . . . . . . . . . . . . . . . . . . . . . V.REG +1.2/37V 1.5A (LM317T) TR11 . . . . . . . . . . . . . . . . . . . . . . . . . MJL3281A DRIVER TRANSISTOR TR12 . . . . . . . . . . . . . . . . . . . . . . . . . MJ15024 NPN POWER TRANS TO3 . . . . . BD0373 TR13 . . . . . . . . . . . . . . . . . . . . . . . . . MJ15024 NPN POWER TRANS TO3 . . . . . BD0373 TR14 . . . . . . . . . . . . . . . . . . . . . . . . . MJ15024 NPN POWER TRANS TO3 . . . . . BD0373 TR15 . . . . . . . . . . . . . . . . . . . . . . . . . MJ15024 NPN POWER TRANS TO3 . . . . . BD0373 W/Form . . . . . . . BE0430 . . . . . BD0399 . . . . . . . . . . . . . . . . . . . . . . . . LINK WFM(FREE ENDS)100MM . . . . . RV4084-100 pcb ass . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 FAN CONTROL PCB ASSY . . . . RA4032 CPS2000 FRONT SUB PNL ASSY Ident . . . . . . . . . . . . . . . . . . . . . . . . . . Description RS5976 . . . . . . . . . . . . . . . . . Part Number —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . ! C1350AA HIGH INRUSH NON ILLUM . . . . DL8003 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . LED 3.5DIGIT PANEL METER . . . . . . . JE0418 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 FRONT SUB-PNL —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 MTR BRKT . . . . . . . PF0648-04 . . . . . . . . . PF0653-02 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . ! SCHRTR FUSEHOLDER . . . . . . . ZD8014 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . ! SCHRTR FUSE CARRIER . . . . . . . ZD8015 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . ! SCHRTR FUSEHOLDER INSULATOR . . . ZD8016 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . ! 5X20MM T10A/250V AS FUSE W/Form . . . . . . ZD8110 . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 MNS SWT TO VOLT SEL WM . . . RV3658 pcb ass . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 VOLTAGE SEL PCB ASSY CPS2000 CHASSIS ASSY Ident . . . . . . . . . . . . . . . . . . . . . . . . . . Description . . . . RD3817 RS5977 . . . . . . . . . . . . . . . . . Part Number —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 10,000UF 40V DC . . . . . CE0507 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . ! IEC INLET SKT 16A PNL MNT . . . . . . FJ8010 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 REAR LH BRACKET . . . . . . PG1301-01 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 REAR RH BRACKET —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 BASE PANEL . . . . . . PG1302-01 . . . . . . . . PJ1507-04 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . PSU EARTH SYMBOL SLF-ADH 28 . . . . . ZA0078 Parts List PCBS CPS2000 FAN CONTROL PCB ASSY Ident . . . . . . . . . . . . . . . . . . . . . . . . . . Description RA4032 . . . . . . . . . . . . . . . . . Part Number —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 HEATSINK BRACKET . . . . . PF0655-02 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . TO-220 SIL PAD SELF ADHESIVE . . . . . ZC0250 pcb . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 FAN CONTROL PCB . . . . . . SC4032-01 C1 . . . . . . . . . . . . . . . . . . . . . . . . . . POLY-CAP 5MM 5% 63V 100N . . . . . . CC0252 CN1 . . . . . . . . . . . . . . . . . . . . . . . . . . 2WY MTHD.1"R/A LCKG ML HDR S12 . . . . FF0648 D19 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4148 IC1 . . . . . . . . . . . . . . . . . . . . . . . . . . JRC DUAL OP AMP 072BDE . . . . . . . . . . . BA0001 IC4 . . . . . . . . . . . . . . . . . . . . . . . . . . TL431 SHUNT REGULATOR . . . . . . BE0503 IC5 . . . . . . . . . . . . . . . . . . . . . . . . . . LM35DZ THERMAL SENSOR . . . . . . BE0477 P1 . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 FAN CONTROL WFM P2 . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 FAN CONTROL WFM R32 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 680R BL . . . . . . . AP1345 R33 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 9K1 BL . . . . . . . AP1372 R35 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 10K BL . . . . . . . AP1373 R36 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 390R BL . . . . . . . AP1339 R38 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 120R BL . . . . . . . AP1327 R52 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 4K7 BL . . . . . . . AP1365 R53 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 3K9 BL R55 . . . . . . . . . . . . . . . . . . . . . . . . . . AP 0.25W RES 1% 1K BL R56 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 100K BL R57 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 1M BL R58 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 10K BL TR7 . . . . . . . . . . . . . . . . . . . . . . . . . . NPN TRANS 2SC2240BL(TAPED) TR8 . . . . . . . . . . . . . . . . . . . . . . . . . . PNP TRANS 2SA970GR (TAPED)TOSH . . . BD0301 . . . . . . BE0413 . . . . . RV4016-140 . . . . . RV4016-140 . . . . . . . AP1363 . . . . . . . . AP1349 . . . . . . . AP1397 . . . . . . . . AP1421 . . . . . . . AP1373 . . . . . BD0302 TR10 . . . . . . . . . . . . . . . . . . . . . . . . . BD680 TRANS TR10 . . . . . . . . . . . . . . . . . . . . . . . . . TO126 CLIP-ON H/SNK RDPT PF730. . . . . PN1235 . . . . . . . . . . BD0368 CPS2000 VOLTAGE SEL PCB ASSY Ident . . . . . . . . . . . . . . . . . . . . . . . . . . Description RD3817 . . . . . . . . . . . . . . . . . Part Number —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . ! FUSE COVER SCHURTER 853-9561 . . . . ZD8013 —- . . . . . . . . . . . . . . . . . . . . . . . . . . . . ! 5X20MM T12.5A/250V AS FUSE . . . . . . ZD8112 pcb . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 PSU VOLTAGE SEL PCB . . . . . SC3817-04 CN1 . . . . . . . . . . . . . . . . . . . . . . . . . . 2WY MTHD.1"R/A LCKG ML HDR S12 . . . . FF0648 F1 . . . . . . . . . . . . . . . . . . . . . . . . . . ! SCHURTER FUSE CLIP 10A/250V . . . . . ZD0317 R1 . . . . . . . . . . . . . . . . . . . . . . . . . . ! RES MF 10M 5% 0.5W VR37 . . . . . . . AD8107 R2 . . . . . . . . . . . . . . . . . . . . . . . . . . ! RES MF 10M 5% 0.5W VR37 . . . . . . . AD8107 SW1 . . . . . . . . . . . . . . . . . . . . . . . . . ! TW VOLTAGE SELECTOR SWT . . . . . DJ8000 SW2 . . . . . . . . . . . . . . . . . . . . . . . . . ! TW VOLTAGE SELECTOR SWT . . . . . DJ8000 TH1 . . . . . . . . . . . . . . . . . . . . . . . . . . INRUSH SUPPRESSOR 20SP0R7 . . . . . AZ2265 CPS2000 PSU PCB ASSY Ident . . . . . . . . . . . . . . . . . . . . . . . . . . Description RI3804 . . . . . . . . . . . . . . . . . Part Number pcb . . . . . . . . . . . . . . . . . . . . . . . . . . . CPS2000 PSU PCB . . . . . . . . . SC3804-09 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . or SC3804-10 BR1 . . . . . . . . . . . . . . . . . . . . . . . . . . BDG RECT BR22 2A . . . . . . . . . BC0212 BR2 . . . . . . . . . . . . . . . . . . . . . . . . . . BDG RECT 6A 200V . . . . . . . . . BC0209 BR3 . . . . . . . . . . . . . . . . . . . . . . . . . . BDG RECT BR22 2A . . . . . . . . . BC0212 BR4 . . . . . . . . . . . . . . . . . . . . . . . . . . BDG RECT 6A 200V . . . . . . . . . BC0209 C1 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 470UF 100V O/D S . . . . . CE0436 C2 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 47UF 63V SKP 0.2 . . . . . CE0402 C3 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 47UF 63V SKP 0.2 . . . . . CE0402 Parts List 29 C4 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 47UF 25V TPD SKP . . . . CE0401 C5 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 2.2UF 50V TPD SS . . . . . CE0416 C6 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC TANT 2.2UF 16V . . . . . . . . . CF0504 C7 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 2.2UF 50V TPD SS . . . . . CE0416 C8 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP CER 470P 100V PRF TPD (N47 . . . . . CA0008 C9 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 100UF 63V SKP 5M . . . . CE0430 C10 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 220UF 25V SKP C11 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 47UF 25V TPD SKP . . . . CE0401 C12 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC RAD 2200UF 35V SKR . . . . . CE0443 C13 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC RAD 2200UF 35V SKR . . . . . CE0443 C14 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC RAD 2200UF 35V SKR . . . . . CE0443 C15 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC RAD 2200UF 35V SKR . . . . . CE0443 C16 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 100UF 63V SKP 5M . . . . CE0430 C17 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 220UF 25V SKP C18 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP CER 470P 100V PRF TPD (N47 . . . . . CA0008 C19 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 47UF 25V TPD SKP . . . . CE0401 C20 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC RAD 2200UF 35V SKR . . . . . CE0443 C21 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC RAD 2200UF 35V SKR . . . . . CE0443 C22 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 47UF 63V SKP 0.2 . . . . . CE0402 C23 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 47UF 63V SKP 0.2 . . . . . CE0402 C24 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 470UF 100V O/D S . . . . . CE0436 C25 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 2.2UF 50V TPD SS . . . . . CE0416 C26 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 2.2UF 50V TPD SS . . . . . CE0416 C27 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 330MF 6.3V SKP 6 . . . . . CE0455 C28 . . . . . . . . . . . . . . . . . . . . . . . . . . MICRO-BOX 5MM 5% 100V 220N C29 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 2.2UF 50V TPD SS . . . . . CE0416 C30 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC VERT 330MF 6.3V SKP 6 . . . . . CE0455 C31 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP CER ML 10N 100V 5MM C32 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC RAD 470UF 63V SKR . . . . . CE0442 C33 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC RAD 470UF 63V SKR . . . . . CE0442 C41 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC RAD 470UF 63V SKR . . . . . CE0442 C42 . . . . . . . . . . . . . . . . . . . . . . . . . . CAP ELEC RAD 470UF 63V SKR . . . . . CE0442 CN1 . . . . . . . . . . . . . . . . . . . . . . . . . . 16WY G80 IDC VERT ML LTCH HDR CN2 . . . . . . . . . . . . . . . . . . . . . . . . . . 2WY MTHD .1" VERT LCKNG ML HDR. . . . FF0641 CN3 . . . . . . . . . . . . . . . . . . . . . . . . . . 2WY MTHD .1" VERT LCKNG ML HDR. . . . FF0641 CN4 . . . . . . . . . . . . . . . . . . . . . . . . . . 4WY MLX ML HDR . . . . . . . . . FF0862 CN5 . . . . . . . . . . . . . . . . . . . . . . . . . . 4WY MLX ML HDR . . . . . . . . . FF0862 CN6 . . . . . . . . . . . . . . . . . . . . . . . . . . 2WY MTHD .1" VERT LCKNG ML HDR. . . . FF0641 CN7 . . . . . . . . . . . . . . . . . . . . . . . . . . 6WY MTHD .1" VERT LCKG ML HDR . . . . FF0649 CN8 . . . . . . . . . . . . . . . . . . . . . . . . . . 6WY MTHD .1" VERT LCKG ML HDR . . . . FF0649 CN10 CN11 30 . . . . . CE0422 . . . . . CE0422 . . . . . CC0251 . . . . . . . CA0027 . . . . FA0092 . . . . . . . . . . . . . . . . . . . . . . . . . 2WY MTHD .1" VERT LCKNG ML HDR. . . . FF0641 . . . . . . . . . . . . . . . . . . . . . . . . . 2WY MTHD .1" VERT LCKNG ML HDR. . . . FF0641 D1 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4001 . . . . . . . . . . . BA0005 D2 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4001 . . . . . . . . . . . BA0005 D3 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4148 . . . . . . . . . . . BA0001 D4 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4148 . . . . . . . . . . . BA0001 D5 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4148 . . . . . . . . . . . BA0001 D6 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4001 . . . . . . . . . . . BA0005 D9 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4001 . . . . . . . . . . . BA0005 D10 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4001 . . . . . . . . . . . BA0005 D11 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE SCHOTTKY 3A 20V IN5820 D12 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4148 . . . . . . . . . . . BA0001 D13 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4001 . . . . . . . . . . . BA0005 D14 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4001 . . . . . . . . . . . BA0005 D16 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4148 . . . . . . . . . . . BA0001 D17 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4148 . . . . . . . . . . . BA0001 D19 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4148 . . . . . . . . . . . BA0001 D20 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4148 . . . . . . . . . . . BA0001 D21 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4148 . . . . . . . . . . . BA0001 D22 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4001 . . . . . . . . . . . BA0005 . . . . . BA0028 Parts List D23 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4001 . . . . . . . . . . . BA0005 D24 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4001 . . . . . . . . . . . BA0005 D25 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4001 . . . . . . . . . . . BA0005 D26 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4148 . . . . . . . . . . . BA0001 D27 . . . . . . . . . . . . . . . . . . . . . . . . . . DIODE 1N4148 . . . . . . . . . . . BA0001 DZ7 . . . . . . . . . . . . . . . . . . . . . . . . . . ZENER DIODE 400MW 4.7V . . . . . . . BB0111 DZ8 . . . . . . . . . . . . . . . . . . . . . . . . . . ZENER DIODE 500MW 27V . . . . . . . BB0128 DZ1 . . . . . . . . . . . . . . . . . . . . . . . . . . ZENER DIODE 1.3W 18V BZX85 . . . . . . BB0142 DZ2 . . . . . . . . . . . . . . . . . . . . . . . . . . ZENER DIODE 1.3W 18V BZX85 . . . . . . BB0142 DZ3 . . . . . . . . . . . . . . . . . . . . . . . . . . ZENER DIODE 1.3W 18V BZX85 . . . . . . BB0142 DZ4 . . . . . . . . . . . . . . . . . . . . . . . . . . ZENER DIODE 1.3W 18V BZX85 DZ5 . . . . . . . . . . . . . . . . . . . . . . . . . . ZENER DIODE 400MW 11V . . . . . . . BB0106 DZ10 . . . . . . . . . . . . . . . . . . . . . . . . . ZENER DIODE 400MW 8.2V . . . . . . . BB0113 DZ11 . . . . . . . . . . . . . . . . . . . . . . . . . ZENER DIODE 400MW 8.2V . . . . . . . BB0113 DZ18 . . . . . . . . . . . . . . . . . . . . . . . . . ZENER DIODE 400MW 3.3V . . . . . . . BB0101 . . . . . . BB0142 F1 . . . . . . . . . . . . . . . . . . . . . . . . . . ! SCHURTER FUSE CLIP 10A/250V . . . . . ZD0317 F1 . . . . . . . . . . . . . . . . . . . . . . . . . . ! FUSE COVER SCHURTER 853-9561 . . . . ZD8013 F1 . . . . . . . . . . . . . . . . . . . . . . . . . . ! 5X20MM T3.15A/250V AS FUSE . . . . . . ZD8103 F2 . . . . . . . . . . . . . . . . . . . . . . . . . . ! SCHURTER FUSE CLIP 10A/250V . . . . . ZD0317 F2 . . . . . . . . . . . . . . . . . . . . . . . . . . ! FUSE COVER SCHURTER 853-9561 . . . . ZD8013 F2 . . . . . . . . . . . . . . . . . . . . . . . . . . ! 5X20MM T2A/250V AS FUSE F3 . . . . . . . . . . . . . . . . . . . . . . . . . . ! SCHURTER FUSE CLIP 10A/250V . . . . . ZD0317 F3 . . . . . . . . . . . . . . . . . . . . . . . . . . ! FUSE COVER SCHURTER 853-9561 . . . . ZD8013 F3 . . . . . . . . . . . . . . . . . . . . . . . . . . ! 5X20MM T3.15A/250V AS FUSE . . . . . . ZD8103 F4 . . . . . . . . . . . . . . . . . . . . . . . . . . ! SCHURTER FUSE CLIP 10A/250V . . . . . ZD0317 F4 . . . . . . . . . . . . . . . . . . . . . . . . . . ! FUSE COVER SCHURTER 853-9561 . . . . ZD8013 . . . . . . ZD8102 F4 . . . . . . . . . . . . . . . . . . . . . . . . . . ! 5X20MM T2A/250V AS FUSE IC1 . . . . . . . . . . . . . . . . . . . . . . . . . . OP297 OP AMP 8PIN DIP . . . . . . . . BE0546 . . . . . . ZD8102 IC2 . . . . . . . . . . . . . . . . . . . . . . . . . . OP297 OP AMP 8PIN DIP . . . . . . . . BE0546 IC3 . . . . . . . . . . . . . . . . . . . . . . . . . . LM723J/883 V.REG MIL SPEC . . . . . . . BE0544 IC4 . . . . . . . . . . . . . . . . . . . . . . . . . . LM723J/883 V.REG MIL SPEC . . . . . . . BE0544 IC5 . . . . . . . . . . . . . . . . . . . . . . . . . . JRC DUAL OP AMP 072BDE . . . . . . BE0413 IC6 . . . . . . . . . . . . . . . . . . . . . . . . . . JRC DUAL OP AMP 072BDE . . . . . . BE0413 IC7 . . . . . . . . . . . . . . . . . . . . . . . . . . LM385 VOLTAGE REFERENCE . . . . . BE0531 JMP1 . . . . . . . . . . . . . . . . . . . . . . . . . 2WY HONDA .1" SIL HDR (GOLD) . . . . . FF0613 JMP2 . . . . . . . . . . . . . . . . . . . . . . . . . 2WY HONDA .1" JUMPER (GOLD) . . . . . FF0614 JMP2 . . . . . . . . . . . . . . . . . . . . . . . . . 3WY .1" SIL HDR(GLD)2.54MM PIN . . . . . FF0637 JMP3 . . . . . . . . . . . . . . . . . . . . . . . . . 2WY HONDA .1" SIL HDR (GOLD) . . . . . FF0613 LED1 . . . . . . . . . . . . . . . . . . . . . . . . . LED 3MM RED S/B PRE 3/4 TP/RL . . . . . JA0167R LED2 . . . . . . . . . . . . . . . . . . . . . . . . . T1 3/4 5MM LED GREEN . . . . . . . . JA0034 LED3 . . . . . . . . . . . . . . . . . . . . . . . . . T1 3/4 5MM LED GREEN . . . . . . . . JA0034 LED4 . . . . . . . . . . . . . . . . . . . . . . . . . LED 3MM RED S/B PRE 3/4 TP/RL LED5 . . . . . . . . . . . . . . . . . . . . . . . . . T1 3/4 5MM LED GREEN LED6 . . . . . . . . . . . . . . . . . . . . . . . . . T1 3/4 5MM LED GREEN LED7 . . . . . . . . . . . . . . . . . . . . . . . . . T1 3/4 5MM LED RED OPTO1 . . . . . . . . . . . . . . . . . . . . . . . . . CNY17-1 OPTO-COUPLER . . . . . JA0167R . . . . . . . . JA0034 . . . . . . . . JA0034 . . . . . . . . . JA0033 . . . . . . . BD0348 PR1 . . . . . . . . . . . . . . . . . . . . . . . . . . CERMIT TRIMMER HORIZ 2K . . . . . . DE0483 PR2 . . . . . . . . . . . . . . . . . . . . . . . . . . CERMIT TRIMMER HORIZ 1K . . . . . . DE0482 PR3 . . . . . . . . . . . . . . . . . . . . . . . . . . CERMIT TRIMMER HORIZ 2K . . . . . . DE0483 PR4 . . . . . . . . . . . . . . . . . . . . . . . . . . CERMIT MULTI TRIMMER 5K SD/ADJ . . . . DE0516 PR5 . . . . . . . . . . . . . . . . . . . . . . . . . . CERMIT MULTI TRIMMER 5K SD/ADJ . . . . DE0516 R1 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 120R BL . . . . . . . AP1327 R2 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 3K9 BL . . . . . . . AP1363 R3 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 100R BL . . . . . . . AP1325 R4 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 33K BL . . . . . . . AP1385 R5 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 2K4 BL . . . . . . . AP1358 R6 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 33K BL . . . . . . . AP1385 R7 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 2K4 BL R9 . . . . . . . . . . . . . . . . . . . . . . . . . . W/W RES 4W 470R VTM R10 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 2K2 BL Parts List . . . . . . . AP1358 . . . . . . . . AH0744 . . . . . . . AP1357 31 32 R11 . . . . . . . . . . . . . . . . . . . . . . . . . . CF RES 1/2W 5% 330R R12 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 22K BL . . . . . . . . . AF0537 . . . . . . . AP1381 R13 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 10K BL . . . . . . . AP1373 R14 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 10K BL . . . . . . . AP1373 R15 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 10K BL . . . . . . . AP1373 R16 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 4K7 BL . . . . . . . AP1365 R17 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 5K6 BL . . . . . . . AP1367 R18 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 6K2 BL . . . . . . . AP1368 R19 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 100R BL . . . . . . . AP1325 R20 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 1K6 BL . . . . . . . AP1354 R21 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 10K BL . . . . . . . AP1373 R22 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 10K BL . . . . . . . AP1373 R23 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 47K BL . . . . . . . AP1389 R24 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 47K BL . . . . . . . AP1389 R25 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 33K BL . . . . . . . AP1385 R26 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 10K BL . . . . . . . AP1373 R26 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 33K BL . . . . . . . AP1385 R27 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 10K BL . . . . . . . AP1373 R28 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 47K BL . . . . . . . AP1389 R29 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 47K BL . . . . . . . AP1389 R30 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 47K BL . . . . . . . AP1389 R31 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 82K BL . . . . . . . AP1395 R32 . . . . . . . . . . . . . . . . . . . . . . . . . . AF 0.25W RES 1% 330R BL . . . . . . . AP1337 R33 . . . . . . . . . . . . . . . . . . . . . . . . . . AF 0.25W RES 1% 330R BL . . . . . . . AP1337 R34 . . . . . . . . . . . . . . . . . . . . . . . . . . AF 0.25W RES 1% 330R BL R35 . . . . . . . . . . . . . . . . . . . . . . . . . . W/W RES 2W 10% OR1 . . . . . . . . AG0654 R36 . . . . . . . . . . . . . . . . . . . . . . . . . . W/W RES 2W 10% OR1 . . . . . . . . AG0654 R37 . . . . . . . . . . . . . . . . . . . . . . . . . . W/W RES 2W 10% OR1 . . . . . . . . AG0654 R38 . . . . . . . . . . . . . . . . . . . . . . . . . . W/W RES 2W 10% OR1 . . . . . . . . AG0654 R39 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 470K BL R41 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 10R BL R42 . . . . . . . . . . . . . . . . . . . . . . . . . . W/W RES 2W 10% OR1 . . . . . . . . AG0654 R43 . . . . . . . . . . . . . . . . . . . . . . . . . . W/W RES 2W 10% OR1 . . . . . . . . AG0654 R44 . . . . . . . . . . . . . . . . . . . . . . . . . . W/W RES 2W 10% OR1 . . . . . . . . AG0654 R45 . . . . . . . . . . . . . . . . . . . . . . . . . . W/W RES 2W 10% OR1 . . . . . . . . AG0654 R46 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 2K2 BL R47 . . . . . . . . . . . . . . . . . . . . . . . . . . W/W RES 4W 470R VTM R48 . . . . . . . . . . . . . . . . . . . . . . . . . . CF RES 1/2W 5% 330R R49 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 2K2 BL . . . . . . . AP1357 R50 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 10R BL . . . . . . . AP1301 R51 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 10K BL . . . . . . . AP1373 R52 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 10K BL . . . . . . . AP1373 R53 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 22K BL . . . . . . . AP1381 R54 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 10K BL . . . . . . . AP1373 R55 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 100R BL R56 . . . . . . . . . . . . . . . . . . . . . . . . . . W/W RES 2W 10% OR1 . . . . . . . . AG0654 R57 . . . . . . . . . . . . . . . . . . . . . . . . . . W/W RES 2W 10% OR1 . . . . . . . . AG0654 R58 . . . . . . . . . . . . . . . . . . . . . . . . . . W/W RES 2W 10% OR1 . . . . . . . . AG0654 R59 . . . . . . . . . . . . . . . . . . . . . . . . . . W/W RES 2W 10% OR1 . . . . . . . . AG0654 R60 . . . . . . . . . . . . . . . . . . . . . . . . . . W/W RES 2W 10% OR1 . . . . . . . . AG0654 R61 . . . . . . . . . . . . . . . . . . . . . . . . . . W/W RES 2W 10% OR1 . . . . . . . . AG0654 R62 . . . . . . . . . . . . . . . . . . . . . . . . . . W/W RES 2W 10% OR1 . . . . . . . . AG0654 R63 . . . . . . . . . . . . . . . . . . . . . . . . . . W/W RES 2W 10% OR1 . . . . . . . . AG0654 R64 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 4K7 BL . . . . . . . AP1365 R65 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 5K6 BL . . . . . . . AP1367 R66 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 6K2 BL . . . . . . . AP1368 R67 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 1K6 BL . . . . . . . AP1354 R68 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 180R BL . . . . . . . AP1331 R69 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 1K1 BL . . . . . . . AP1350 R70 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 680R BL . . . . . . . AP1345 . . . . . . . AP1337 . . . . . . . AP1413 . . . . . . . AP1301 . . . . . . . AP1357 . . . . . . . . AH0744 . . . . . . . . . AF0537 . . . . . . . AP1325 Parts List R71 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 10K BL . . . . . . . AP1373 R72 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 22K BL . . . . . . . AP1381 R73 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 7K5 BL . . . . . . . AP1370 R74 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 47K BL . . . . . . . AP1389 R75 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 100K BL . . . . . . . AP1397 R76 . . . . . . . . . . . . . . . . . . . . . . . . . . ZERO OHM RESISTOR (METAL SLUG) . . . AZ2222 R78 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 10K BL . . . . . . . AP1373 R79 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 8K2 BL . . . . . . . AP1371 R80 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 6K8 BL . . . . . . . AP1369 R81 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 2K2 BL . . . . . . . AP1357 R82 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 6K8 BL . . . . . . . AP1369 R83 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 2K2 BL . . . . . . . AP1357 R84 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 30K BL . . . . . . . AP1384 R85 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 2K4 BL . . . . . . . AP1358 R87 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 1K8 BL . . . . . . . AP1355 R88 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 47K BL . . . . . . . AP1389 R89 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 100K BL . . . . . . . AP1397 R90 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 2K2 BL . . . . . . . AP1357 R92 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 30K BL . . . . . . . AP1384 R93 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 2K4 BL . . . . . . . AP1358 R94 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 7K5 BL . . . . . . . AP1370 R97 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 6K8 BL . . . . . . . AP1369 R98 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 4K3 BL . . . . . . . AP1364 R99 . . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 8K2 BL . . . . . . . AP1371 R100 . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 100K BL R101 . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 47K BL R102 . . . . . . . . . . . . . . . . . . . . . . . . . AP 0.25W RES 1% 1K BL R103 . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 220K BL R104 . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 47K BL . . . . . . . AP1389 R105 . . . . . . . . . . . . . . . . . . . . . . . . . ! RES MF 10M 5% 0.5W VR37 . . . . . . . AD8107 R107 . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 4K7 BL . . . . . . . AP1365 R108 . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 4K7 BL . . . . . . . AP1365 R109 . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 220K BL . . . . . . . AP1405 R110 . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 100K BL . . . . . . . AP1397 R111 . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 680K BL . . . . . . . AP1417 R112 . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 100K BL . . . . . . . AP1397 R113 . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 100K BL . . . . . . . AP1397 R114 . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 100K BL . . . . . . . AP1397 R115 . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 47K BL . . . . . . . AP1389 R116 . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 6K8 BL . . . . . . . AP1369 R117 . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 100K BL . . . . . . . AP1397 R118 . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 22K BL . . . . . . . AP1381 R119 . . . . . . . . . . . . . . . . . . . . . . . . . ZERO OHM RESISTOR (METAL SLUG) . . . AZ2222 R120 . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 10K BL . . . . . . . AP1373 R121 . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 10K BL . . . . . . . AP1373 R122 . . . . . . . . . . . . . . . . . . . . . . . . . MF 0.25W RES 1% 5K1 BL . . . . . . . AP1366 R106 . . . . . . . . . . . . . . . . . . . . . . . . . ! RES MF 10M 5% 0.5W VR37 . . . . . . . AD8107 REG1 . . . . . . . . . . . . . . . . . . . . . . . . . 3WY MTHD 0.1" R/A ML . . . . . . . . FD0309 REG2 . . . . . . . . . . . . . . . . . . . . . . . . . 3WY MTHD 0.1" R/A ML . . . . . . . . FD0309 . . . . . . . . . . . . . . . . . . . . . . . . . 3WY MTHD 0.1" R/A ML . . . . . . . . FD0309 REG3 . . . . . . . AP1397 . . . . . . . AP1389 . . . . . . . . AP1349 . . . . . . . AP1405 TR2 . . . . . . . . . . . . . . . . . . . . . . . . . . NPN TRANS 2SC2240BL(TAPED) . . . . . BD0302 TR8 . . . . . . . . . . . . . . . . . . . . . . . . . . LM385 VOLTAGE REFERENCE . . . . . BE0531 TR9 . . . . . . . . . . . . . . . . . . . . . . . . . . NPN TRANS 2SC2240BL(TAPED) . . . . . BD0302 TR10 . . . . . . . . . . . . . . . . . . . . . . . . . PNP TRANS 2SA970GR (TAPED)TOSH . . . BD0301 TR16 . . . . . . . . . . . . . . . . . . . . . . . . . MPSA42 NPN TRANS TR18 . . . . . . . . . . . . . . . . . . . . . . . . . NPN TRANS 2SC2240BL(TAPED) . . . . . BD0302 TR19 . . . . . . . . . . . . . . . . . . . . . . . . . NPN TRANS 2SC2240BL(TAPED) . . . . . BD0302 TR20 . . . . . . . . . . . . . . . . . . . . . . . . . PNP TRANS 2SA970GR (TAPED)TOSH . . . BD0301 TR21 . . . . . . . . . . . . . . . . . . . . . . . . . NPN TRANS 2SC2240BL(TAPED) . . . . . BD0302 TR22 . . . . . . . . . . . . . . . . . . . . . . . . . NPN TRANS 2SC2240BL(TAPED) . . . . . BD0302 Parts List . . . . . . . . BD0369 33 TR23 . . . . . . . . . . . . . . . . . . . . . . . . . NPN TRANS 2SC2240BL(TAPED) . . . . . BD0302 TR24 . . . . . . . . . . . . . . . . . . . . . . . . . NPN TRANS 2SC2240BL(TAPED) . . . . . BD0302 TR25 . . . . . . . . . . . . . . . . . . . . . . . . . NPN TRANS 2SC2240BL(TAPED) TR27 . . . . . . . . . . . . . . . . . . . . . . . . . LM35DZ THERMAL SENSOR TR28 . . . . . . . . . . . . . . . . . . . . . . . . . NPN TRANS 2SC2240BL(TAPED) . . . . . BD0302 TR29 . . . . . . . . . . . . . . . . . . . . . . . . . LM385 VOLTAGE REFERENCE . . . . . BE0531 TR30 . . . . . . . . . . . . . . . . . . . . . . . . . PNP TRANS 2SA970GR (TAPED)TOSH . . . BD0301 TR31 . . . . . . . . . . . . . . . . . . . . . . . . . LM35DZ THERMAL SENSOR . . . . . BD0302 . . . . . . BE0477 . . . . . . BE0477 MISCELLANEOUS HARDWARE Description . . . . . . . . . . . . . . . . . . . . . Part Number . . . . . . . . . Used in: (part number) 2BA VIBRATION RESIST.SOLDR TAG . . . . . . . . NE0409 . . . . . . . . . RV3656, RV3662 6/32 UNCX10/16"PCB STUD . . . . . . . . . . . . . NZ2317 . . . . . . . . . RI3804 CAPACITOR MOUNTONG BRKT VERT . . . . . . . . NZ2356 . . . . . . . . . RS5977 CPS2000 TO3P MOUNTING CLIP . . . . . . . . . . . NZ2354 . . . . . . . . . RS5974, RS5975 FAN GASKET 80.00MM . . . . . . . . . . . . . . . . NZ2357-02 HANDLE 120MM STAINLESS STEEL . . . . . . . . . NZ2362 34 . . . . . . . . RS5974, RS5975 . . . . . . . . . RY8009 M3 BARB NUT . . . . . . . . . . . . . . . . . . . . . NB0175 . . . . . . . . . RA4032 M3 NYLON INSERT NUT ZINC . . . . . . . . . . . . NB0113 . . . . . . . . . RS5976, RS5977, RS5978 M3 S/PROOF WASHER ZINC . . . . . . . . . . . . . NC0221 . . . . . . . . . RS5974, RS5975 M3.5 NYLON BUSH . . . . . . . . . . . . . . . . . . ND0392 . . . . . . . . . RS5974, RS5975 M3X10 SPACER + STUD 6MM LG HTS . . . . . . . . ND0419 . . . . . . . . . RS5974, RS5975 M3X10MM CSK POZI SCR BLK ISO . . . . . . . . . NA0115 . . . . . . . . . RS5977 M3X12MM PAN POZI SCR BLK ISO. . . . . . . . . . NA0237 . . . . . . . . . RS5978 M3X6 PN PZI W/CAPT WASHER ZNC . . . . . . . . NA0401 . . . . . . . . . RA4032 M3X8MM PAN POZI BLK SCR ISO . . . . . . . . . . NA0130 . . . . . . . . . RS5974, RS5975, RY8009 M4 CRINKLE WSHR BERYLLIUM COPP . . . . . . . NC0278 . . . . . . . . . RS5977, RY8009 M4 NYLON INSERT NUT TYPE T ZIN . . . . . . . . . NB0127 . . . . . . . . . RS5977, RS5978, RY8009 M4 PLAIN STL WSHR ZNC CLR 9MM . . . . . . . . NC0249 . . . . . . . . . RS5978 M4 SPIRE NUT SNU1218-17-40 ZNC . . . . . . . . . NB0156 . . . . . . . . . RS5978 M4X10MM PAN POZI STL SCR BLK I . . . . . . . . . NA0146 . . . . . . . . . RS5977, RS5978, RY8009 M4X16MM PAN POZI SCR ZINC ISO . . . . . . . . . NA0125 . . . . . . . . . RS5974, RS5975 M4X20 PAN POZI ZINC . . . . . . . . . . . . . . . . NA0422 . . . . . . . . . RS5977 M4X9 1MM THICK RUBBER WASHER . . . . . . . . NC0293 . . . . . . . . . RS5974, RS5975 M5 CRINKLE WSHR BERRYLLIUM COP . . . . . . . NC0303 . . . . . . . . . RS5978 M5 NYLON INSERT NUT ZINC . . . . . . . . . . . . NB0116 . . . . . . . . . RS5974, RS5975 M5 STAR SOLDER TAG . . . . . . . . . . . . . . . . NE0418 . . . . . . . . . RS5978 M5X12 SKT CAP HD ST/STEEL . . . . . . . . . . . . NA0449 . . . . . . . . . RY8009 M5X12MM CSK POZI BLK SCR ISO . . . . . . . . . NA0091 . . . . . . . . . RS5978, RY8009 M5X30MM PAN POZI SCR ZINC ISO . . . . . . . . . NA0094 . . . . . . . . . RS5974, RS5975 M6 NYLON INSERT NUT ZINC . . . . . . . . . . . . NB0117 . . . . . . . . . RS5978 M6X20MM PAN POZI CLR SCR . . . . . . . . . . . . NA0317 . . . . . . . . . RS5978 NO.4X3/4"PAN POZI BLK S/T . . . . . . . . . . . . . NA0129 . . . . . . . . . RS5976 NO.4X7.90 RET SPACER RICHCO . . . . . . . . . . ND0454 . . . . . . . . . RS5976 NO.6 PLASTIC WASHER 1.58MM . . . . . . . . . . . NC0295 . . . . . . . . . RA4032, RS5974, RS5975 NO.6X1/2"TYPE B CSK POZI BLACK . . . . . . . . . NA0073 . . . . . . . . . RY8009 NO.8X3/8"PAN POZI B BLACK SCR . . . . . . . . . NA0372 . . . . . . . . . RS5978 NO6X5/8"TYPE B PAN POZI BLK . . . . . . . . . . . NA0258 . . . . . . . . . RS5974, RS5975 NYLOCK NUT ZINC 6-32 UNIFIED . . . . . . . . . . NB0173 . . . . . . . . . RS5974, RS5975 PLASTIC SNAP RIVET. . . . . . . . . . . . . . . . . NZ2332 . . . . . . . . . RA4032 RICHO SCREW ON PLASTIC FEET. . . . . . . . . . ZZ2541 . . . . . . . . . RS5977 VIB RES CRIMP TAG V5 TIN PLT . . . . . . . . . . . NE0416 . . . . . . . . . RV3657, RV3695-600 Parts List Fan Control Fan Control 35 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; the exception being 10% high mains and maximum current drawn, which naturally sets the fan to full speed. The PCB (with associated mounting bracket) may be retrofitted to existing CPS2000 units. The servo circuit consists of opamp IC1-A, temperature sensor IC5, shunt regulator IC4, and fan control devices TR7,TR10. IC4 maintains 2.50V between its "anode" and "cathode"; this is the precise voltage that drives the reference chain R53,55. TR8 also uses this voltage to set its emitter at 4.4V above ground; this keeps IC1’s inputs within their common-mode range. Thus both ends of the voltage divider R53-R55 are fixed at defined voltages. LM35DZ temperature sensor IC5 outputs 10mV per degreeC above freezing point (0 degC) and applies it to IC1-A non-inverting input. The desired heatsink temperature is set at the junction of R53,55, which sits at +5.0V approx. This is 600mV above the +4.4V rail, and so represents 60 degC. R52,57 set the servo loop gain. This is designed to be safely below the level at which slow thermal oscillations would occur. R56,D19 increase the loop gain when IC1-A output is below 4V. This prevents the fan sitting for long periods in a not-quite-running state where it consumes current but does not rotate. The voltage range 1-4V where this occurs is thus skipped over quickly. The fan is driven through feedback amplifier TR7,10, which has a voltage gain of 1.3 times. This allows the fan to be driven over its full operating voltage range despite the output saturation limits of IC1-A. This gives improved cooling at high temperatures and mains voltages. The CPS2000 thermal shutdown system is quite separate and has no connection with this PCB. 36 Fan Control CPS2000 Fan Controller Circuit Diagram Fan Control 37 38 Fan Control Technical Drawings Circuit Diagrams ED3804A ED3804B ED3804A ED3804B ED3817 Issue 9 Issue 9 Issue 10 Issue 10 Issue 4 PCB Layouts SC3804 SC3804 SC3817 Technical Drawings Issue 9 Issue 10 Issue 4 39 40 Technical Drawings Technical Drawings 41 42 Technical Drawings Technical Drawings 43 44 Technical Drawings Technical Drawings 45 46 Technical Drawings Technical Drawings 47 48 Technical Drawings
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