Question 2
a) List three procedures for troubleshooting a faulty mobile phone.
b) Explain each of the procedures listed in 2(a).
Candidates’ performance was poor. This question required the candidates’ knowledge of troubleshooting faulty phones.
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Observation
The expected answers are:
a. Procedures for Troubleshooting
- visualisation;
-knowledge of the phone status;
-software checking;
-analysis of the circuit board.
b. Explanation of Procedures listed in 2(a)
-Visualisation
- Examine critically the PCB for possible burnt components, corrosion, breakage, dust accumulation etc.
-Knowledge of the Phone status
Ask for the history of the phone from the owner/ user e.g. contact with liquid, frequent falling, wrong insertion/incompatible charger, etc.-Software checking
Use of flashing device to read the logs of the phone.-Analysis of the circuit board
Use of meter to test components.