SoundCraft CPS2000 technical manual This is Dangerous, Fuse Replacement

Page 27

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

Image 27
Contents Soundcraft CPS2000 EN6 3JN Contents Page Introduction Important Safety Instructions Mains Voltage Selection IntroductionMains Voltage Selector Positions Operating Voltage Range Warranty Recommendations for Installation of the CPS Recommendations for Installation General To Console PSU LinkingDimensions Installation Technical Specification Technical Specification Rated Input Power MaxOperating Temperature Range Ambient Circuit Description Circuit Description +/- 17V RAILS. SC3804+17V Supply. LH PCB Mutual Shutdown System Mains Voltage MeterOvercurrent Protection Temperature Protection System Undervoltage warning-17V Supply. RH PCB +48V Supply +8V SupplyMains Voltage Select PCB. SC3817 Fan Control PCB. SC4032 +/- 17V Rails Faultfinding NotesThis is Dangerous Fuse ReplacementCircuit Description Parts List Spare Parts Main Assemblies CPS2000 RH Module Assy Pcbs CAP Elec Vert 47UF 25V TPD SKP DZ7 RES 4W 470R VTM REG1 Miscellaneous Hardware Fan Control Technical Description CPS2000 Fan Control & PCB SC4032CPS2000 Fan Controller Circuit Diagram Fan Control Technical Drawings Technical Drawings Technical Drawings Technical Drawings Technical Drawings Technical Drawings Technical Drawings Technical Drawings Technical Drawings Technical Drawings