waecE-LEARNING
GSM Phone Maintenance & Repair Paper 2, May/June 2014  
Questions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14   Main
General Comments
Weakness/Remedies
Strength



















Question 13
QUESTION 13

                       
                        (a)        Identify the item A.
                        (b)        Name a device that is inserted into A
                        (c)        What purpose does A serve in a phone?
                        (d)       State one condition for which A would not recognize the device named in                                                 1(b) above.
                                                                                                                                                                                                                                                                          
                        (e)        Identify the item B.
                        (f)        State the function of B in a phone workshop.
                        (g)        State two precautions you would take when using B.
                                                                                   
                        (h)        Identify the item C shown above.
                        (i)         List four components usually found on C.
                        (j)         Name two instruments required to remove a component from C.

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OBSERVATION

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

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