Classe Audio CA-100-101, Service Manual

Page 1: ...PRO SVR_LEGACY Page 1 of 14 Date August 14 2007 Model Number CA 100 101 Classé Audio Inc Subject Service manual Classé Audio Inc 5070 François Cusson Lachine Québec Canada H8T1B3 www classeaudio com ...

Page 2: ...tments 9 Parts List 10 Updates 11 Fuses 13 Voltage Change 13 Remote Interface Information 14 Schematics 15 The contents of this document as well as the files associated with it contain confidential information that is proprietary to Classé Audio Incorporated and are intended solely for the purpose of servicing product No part of its contents may be used copied disclosed or conveyed to any party in...

Page 3: ...t parts please contact your nearest service center always quoting the unit serial number North America Phone 978 664 2870 E mail classe bwgroupusa com Europe Phone 44 0 1903 221 700 E mail classe bwgroup com Asia Phone 852 2790 8903 E mail classe bwgroup hk Rest of the World Phone 514 636 6384 E mail cservice classeaudio com Important Notes on Servicing 1 ALWAYS observe ESD precautions when handli...

Page 4: ...PRO SVR_LEGACY Page 4 of 14 Block diagrams ...

Page 5: ... are not within specifications return to the troubleshooting guide 7 Slowly raise voltage until you hear relays click this point is around 55Vac Recheck every supply 8 If one or more supply are not within specifications return to the troubleshooting guide 9 Raise voltage to 120Vac Recheck every supply 10 If every supply is within specifications unplug the unit and bypass from the variable transfor...

Page 6: ... would blow the technician will first need to identify and cure the cause of failure please report troubleshooting guide When the cause has been identified disconnect the unit from the system including the AC power Remove the top cover and look for damaged or burned components If no other components than the fuses appear to be damaged the technician can then replace the broken fuses with the same ...

Page 7: ...ircuits positive rail negative rail Mosfet supply No output Check connexions Check output relays Check power supply circuits positive rail negative rail Mosfet supply Check output transistors Unit turn into protection Check for smoked and or burned components Check power supply circuits positive rail negative rail Mosfet supply Check source and load Check protection circuit Check sensor wires betw...

Page 8: ...ase Blown output transistors should be replaced by kits not individually These kits contains matched transistors for both rails of one channel When replacing blown output transistors you must also replace positive and negative Mosfet drivers and bias transistor Carefully inspect 4 7ƻ resistor and 10ƻ soft start resistor and replace if necessary Replace any burnt component or board Pins 1 Base 2 Co...

Page 9: ...nd reconnect the multimeter setted to mV scale to R120 leads Note the reading 7 Connect the multimeter to R120 and R122 leads Note the readings 8 Input the results into this formula 48 mVR120 mVR122 2 mVR120 9 Connect the multimeter to R120 leads and adjust RV102 to match the reading to the formula result 10 Results should be around 24mV DC offset Note DC offset adjustment should be made without a...

Page 10: ... Audio with the part location PCB number and model and serial number of the unit If you need a complete PCB please replace the x in the Classe part number with the revision number printed on the board Parts Description Classe part number B01GX Complete PCB filter B01GXR x B051X Complete PCB main B051XR x B052X Complete PCB supply B052XR x B053X Complete PCB capacitor B053XR x ...

Page 11: ...ll bit drill a hole at this intersection Clean the area for any metal residue 5 Remove two black screws holding the voltage selector PCB 6 Disconnect the wire from N neutral The wire should be yellow or clear Take time to identify each wire in order to reconnect them properly 7 Disconnect wire from L live The wire should be blue or black Identify this wire 8 Gently strip off the black shrink tubin...

Page 12: ...PRO SVR_LEGACY Page 12 of 14 Updates fig 1 ...

Page 13: ... main fuse is located at the back of the unit on the rear panel Rail fuses 4A Classe part number GDB 4A The rail fuses are located on the capacitor boards Voltage Change EXTRA PRECAUTIONS SHOULD BE TAKEN WHEN REPAIRING MODIFYING OR TROUBLESHOOTING IN THE POWER SUPPLY AREA UNIT MUST BE DISCONNECT FROM MAIN SOURCE AND CAPACITORS MUST BE DISCHARGED USING A 100W INCANDESCENT BULB 1 Set the jumper posi...

Page 14: ...PRO SVR_LEGACY Page 14 of 14 Remote Interface Information The CA100 101 can be turned on or off using a simple interface connected to the Remote jack located at the back of the unit ...

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