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4.1

Introduction To Fault Diagnosis

4.1JEDEC Modification Solder Side of Board4.1Power supply voltages
 Test Equipment4.2JEDEC Modification Component Side of Board4.2Typical voltages
 Modification History  4.3Typical waveforms and voltages
4.2Fault Diagnosis  4.4Coma voltages
 Techniques    
 Power Up    
 Keyboard    
 128k RAM Packs    
4.3Repair    
 General    
 EPROM Substitution