Classe Audio CA-150 Service Manual

PRO-SVR_LEGACY Page 1 of 14 Date:August 14, 2007 Model Number: CA-150-151 Classé Audio Inc.Subject:Service manual Classé Audio, Inc. 5070 Fran

PRO-SVR_LEGACY Page 10 of 14 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 14 Updates1. On board B041X, replace R132 and R232 with Classe part number A211-1004. 2. On chassis, install PCB fil

PRO-SVR_LEGACY Page 12 of 14 Updatesfig. 1

PRO-SVR_LEGACY Page 13 of 14 FusesEXTRA PRECAUTIONS SHOULD BE TAKEN WHEN REPAIRING, MODIFYING, ORTROUBLESHOOTING IN THE POWER SUPPLY AREA. UNI

PRO-SVR_LEGACY Page 14 of 14 Remote Interface InformationThe CA150-151 can be turned on or off using a simple interface connected to the Remot

PRO-SVR_LEGACY Page 2 of 14 Table of ContentsIntroduction 3Important Notes on Servicing 3Ordering Replacement Parts 3Block Diagrams 4Start up Pr

PRO-SVR_LEGACY Page 3 of 14 IntroductionPlease read this manual carefully before commencing servicing! Only qualified and authorized personnel

PRO-SVR_LEGACY Page 4 of 14 Block diagrams

PRO-SVR_LEGACY Page 5 of 14 Start Up ProcedureWhen receiving a unit, an assiduous visual inspection must be performed. Do not connect the unit

PRO-SVR_LEGACY Page 6 of 14 Protection Modes and IndicatorsThe front LED shows the status of the amplifier. When starting up normally, the CA1

PRO-SVR_LEGACY Page 7 of 14 Troubleshooting GuideSymptom Possible cause Unit won’t turn on Check connections; Check fuses; Check soft-start c

PRO-SVR_LEGACY Page 8 of 14 Output Transistors Testing and ReplacementPLEASE NOTE THAT THESE TESTS ARE ONLY EFFECTIVE ON BIPOLAR TRANSISTORS.

PRO-SVR_LEGACY Page 9 of 14 Calibrations and AdjustmentsBias adjustment: Note: Bias adjustment should be made without any load connected to th