CROWND-150A SERIES II POWER AMPLIFIERRev.0SECTION 4:REPAIR AND MAINTENANCENOTE:The information in this section is4.1 Introductionintended for use by a qualified electronicsThis section contains information for propertechnician.We have made no effort to provideservicing of the D-150A II amplifier includingthe general background information that isdisassembly and reassembly procedures,essential for the proper servicing of anyrequired test equipment lists,repair procedures,complex piece of electronic equipment.and basic troubleshooting tips.Two other sections will be of assistance in4.2 Required Test EquipmentD-150A II service:Section 5 covers GeneralRoutine service work on the D-150A II can beCircuit Theory that could aid a technician inperformed with a minimum amount of testinvestigating an unusual problem.Section 6equipment.However,to insure that the unit iscovers Test Procedures that are requiredmaintained in accord with "factoryfollowing component replacement.specifications",we provide the following list ofrequired test equipment.The "Requirements"column provides information for selecting testequipment from various manufacturers.4-1
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