Classe Audio CAV-75 Servisní příručka

PRO-SVR_LEGACY Page 1 of 13 Date:August 20, 2007 Model Number: CAV-75 Classé Audio Inc.Subject:Service manual Classé Audio, Inc. 5070 François

PRO-SVR_LEGACY Page 10 of 13 Parts ListThis is not a detailed part list. It is a list of major chassis parts and PCBs. If you need to order a

PRO-SVR_LEGACY Page 11 of 13 Updates1. On board B0D1X (3 PCBs), replace R110 and R210 with Classe part number A211-1308.

PRO-SVR_LEGACY Page 12 of 13 FusesEXTRA PRECAUTIONS SHOULD BE TAKEN WHEN REPAIRING, MODIFYING, ORTROUBLESHOOTING IN THE POWER SUPPLY AREA. UNI

PRO-SVR_LEGACY Page 13 of 13 Remote Interface InformationThe CAV75 can be turned on or off using an simple interface connected to the Remote j

PRO-SVR_LEGACY Page 2 of 13 Table of ContentsIntroduction 3Important Notes on Servicing 3Ordering Replacement Parts 3Block Diagrams 4Start up Pr

PRO-SVR_LEGACY Page 3 of 13 IntroductionPlease read this manual carefully before commencing servicing! Only qualified and authorized personnel

PRO-SVR_LEGACY Page 4 of 13 Block diagrams

PRO-SVR_LEGACY Page 5 of 13 Start Up ProcedureWhen receiving a unit, an assiduous visual inspection must be performed. Do not connect the unit

PRO-SVR_LEGACY Page 6 of 13 Protection Modes and IndicatorsThe front LED shows the status of the amplifier (ON or OFF). Unlike other Classé am

PRO-SVR_LEGACY Page 7 of 13 Troubleshooting GuideSymptom Possible cause Unit won’t turn on Check connections; Check fuses; Check relays; Chec

PRO-SVR_LEGACY Page 8 of 13 Output Transistors Testing and ReplacementPLEASE NOTE THAT THESE TESTS ARE ONLY EFFECTIVE ON BIPOLAR TRANSISTORS.

PRO-SVR_LEGACY Page 9 of 13 Calibrations and AdjustmentsBias adjustment: Note: Bias adjustment should be made without any load connected to th