ObjectivesObjectives n Use a four-step troubleshooting model to identify and repair common drop-related problems. n Demonstrate troubleshooting proficiency using: 4 The by-pass technique 4 The divide and conquer method n Use a four-step troubleshooting model to identify and repair common drop-related problems. n Demonstrate troubleshooting proficiency using: 4 The by-pass technique 4 The divide and conquer method Troubleshooting Model Step 1: Analyze the Problem n Ask probing questions. 4 How many TVs are affected? 4 Which channels are affected? 4 What time of day does problem occur? 4 How often does it occur? n Listen and learn from answers. n Ask probing questions. 4 How many TVs are affected? 4 Which channels are affected? 4 What time of day does problem occur? 4 How often does it occur? n Listen and learn from answers. Troubleshooting Step 2: Isolate the Problem n Divide and conquer n Bypass the problem n Divide and conquer n Bypass the problem Troubleshooting Step 3: Fix the Problem n Identify steps needed to repair the problem. n Make sure the fix will eliminate a second service call! n Identify steps needed to repair the problem. n Make sure the fix will eliminate a second service call! Troubleshooting Step 4: Verify the Fix n Reconfirm problem(s) with customer. n Visually check affected TVs and channels. n Make sure there are not other related problems. n Check signal levels. n Check signal leakage. n Reconfirm problem(s) with customer. n Visually check affected TVs and channels. n Make sure there are not other related problems. n Check signal levels. n Check signal leakage. GhostingGhosting Double Image Snowy Picture Hum Modulation Lines or Active Beats Intermodulation Beats Lines or Active Beats Cross Modulation