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PRO-SVR_LEGACY    

 

 

Page 3 of 13 

Introduction

Please read this manual carefully before commencing servicing! 
Only qualified and authorized personnel should attempt to service this product. 

The lightning flash with arrowhead symbol, within an equilateral triangle, is intended 

to alert the user to the presence of uninsulated dangerous voltage within the 
product’s enclosure that may be of sufficient magnitude to constitute a risk of electric 
shock to persons. 

The exclamation point within an equilateral triangle is intended to alert the user to 
the presence of important operating and maintenance (servicing) instructions. 

Classé has a global product support network. For product assistance or to order replacement parts please 
contact your nearest service center always quoting the unit serial number.  

North America 

Phone: (978) 664-2870 E-mail: 

[email protected]

Europe

Phone: 44 (0) 1903 221 700 E-mail: 

[email protected]

Asia

Phone: (852) 2790 8903 E-mail: 

[email protected]

Rest of the World 

Phone: (514) 636-6384 E-mail: 

[email protected]

Important Notes on Servicing 

1.

ALWAYS observe ESD precautions when handling electronic modules or PCBAs.  

2.

NEVER exchange boards with a different revision number, unless authorized by Classé.  

3.

ALWAYS use Classé original replacement parts. The use of generic parts may void the warranty of 

the unit.  

Ordering Replacement Parts 

There may be a delay in processing incomplete requests. Please be sure to include all required information.  
Remember to quote the serial number of the unit on all replacement part orders and the Classé order number 
when returning defective parts for credit.   

Summary of Contents for CAV-500

Page 1: ...PRO SVR_LEGACY Page 1 of 13 Date August 20 2007 Model Number CAV 500 Class Audio Inc Subject Service manual Class Audio Inc 5070 Fran ois Cusson Lachine Qu bec Canada H8T1B3 www classeaudio com...

Page 2: ...ustments 9 Parts List 10 Updates 11 Fuses 12 Voltage Change 12 IR Interface Information 13 Schematics 14 The contents of this document as well as the files associated with it contain confidential info...

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 bwgr...

Page 4: ...PRO SVR_LEGACY Page 4 of 13 Block diagrams...

Page 5: ...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 spe...

Page 6: ...the technician will first need to identify and cure the cause of failure please report to troubleshooting guide When the cause has been identified disconnect the unit from the system including the AC...

Page 7: ...ail negative rail No output Check connexions Check output relays Check power supply circuits positive rail negative rail Check output transistors Unit turn into protection Check for smoked and or burn...

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 rep...

Page 9: ...t warm up for 15 minutes on idle 4 Adjust trimpot R104 to get a 5mV reading 5 Let the amplifier warm up for a 24 hours period with signal and load 6 Remove signal and load and reconnect the multimeter...

Page 10: ...n the board Parts Description Classe part number B1D9X Complete PCB negative sensor B1D9XR x B1DBX Complete PCB positive sensor B1DBXR x B02AX Complete PCB amplifier B02AXR x B1D1X Complete PCB heatsi...

Page 11: ...number A211 1308 6 On board B1D1X and B1D7X 5 PCBs replace R104 with Classe part number 3299X 1 202 7 On chassis install capacitors Classe part number A201 1162 on AC poles of the bridge rectifiers bo...

Page 12: ...the control board B1D5X 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 MU...

Page 13: ...3 Turns on Amplifier 6 J3 J2 J1 J0 ADDRESS RC Button Auto ON Note X X X X 0 Amp1 No QC setting X X X Out 1 Amp2 No X X Out X 2 Amp3 No X X Out Out 3 Amp4 No X Out X X 4 Amp5 No X Out X Out 5 Amp6 No X...

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Page 16: ...B1D2XR01_N sch 1 Thu Jul 26 16 39 02 2007...

Page 17: ...B1D3XR02 sch 1 Thu Jul 26 16 27 07 2007...

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Page 23: ...B1D6XR01 sch 1 Thu Jul 26 16 35 18 2007...

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Page 26: ...B1D9XR02 sch 1 Thu Jul 26 16 25 14 2007...

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Page 28: ...B1DBXR02 sch 1 Thu Jul 26 16 24 55 2007...

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