L1-14B.09 – Poor Troubleshooting Techniques “Shotgun” approach – change out components until the problem goes away “Curing the symptom” – not correcting what caused the problem in the first place Failure to replace outdated components or technology...
L1-14B.08 – Powered Devices Make sure voltage to powered devices is within the manufacturers range: On AC Power And on Battery power Does the site have frequent power...
L1-14B.07 – Use Common Sense “Nothing works”; check: power supply, fuse, transformer or circuit breaker? If the key pad or other components are working…its not auxiliary...
L1-14B.06 – Use Process of Elimination Use process of elimination Substitute good parts for suspected bad parts Bridge or jump out sections of a circuit Cool or heat a component to restore to normal operation or reveal abnormal operation Note...
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