Most candidates attempted this question and performance was poor. This is largely due to non availability of qualified teachers and lack of practical exposure. Another likely factor is due to non-availability of text books. For instance in question 1(e) some candidates mistook music (mp 3) player for the ultrasonic cleaner.
The expected answers are:
Item A
(a) SIM Socket/bed/house/contact/slot/seater
(b) SIM card
(c) For phone to read and recognize a SIM card/to enable phone subscribers connect to a network exchange (e.g. receive/call, message, etc)
(d) When the SIM card is damaged e.g. broken/gold foil line scratched
SIM bed is damaged; Line bus is broken; Component(s) serving SIM bed is bad; SIM IC is bad
(e) Item B = Ultrasonic electronic cleaner
(f) To clean PCB
(g) Precautions
Any correct 2
e.g. - ensure the use of recommended cleaning fluid
- do not repeat cleaning procedure more than twice until after
10 minutes
- do not operate the device without a fluid in it
- unplug device when not in use
(h) Item C = PCB (Printed Circuit Board)
(i) Any correct 4
e.g. - Resistor
- Coil/inductor - SIM bed
- Capacitor - RAM
- Diode - ROM
- Transistor - Vibrator
- IC - Camera(lens)
(j) Any correct 2
e.g. - (mobile) rework station
- tweezers
- soldering iron |
