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Question 9
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(a) State the function of electrostatic discharge (ESD) in a mobile phone workshop
(b) A phone was discovered to vibrate only and not ring out. State four causes of this problem.
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This was not a popular question among the candidates. Performance was poor. Most candidates were unable to state the function of the electrostatic discharge (ESD) in a phone workshop. It appears most candidates do not know what ESD is. Part (b) was poorly handled.
The expected answers are:
(a) ESD prevents the technician from receiving electric shock in the workshop when worn
(b) Any correct 4
e.g. - The ringer is bad
- Need to re-align the ringer i.e. bad contact with PCB
- Phone set to silent mode
- Phone set to vibration only
- Phone set to the lowest volume
- Line bus broken
- Component(s) serving the ringer is/are bad/disconnected
- The ringing tone may be empty/corrupt |
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