3.5 Execute and configure mobile device
synchronization
1. If a user wishes to access his contact from his Android
phone. Enable contact sync by setting up his email account on
the phone to provide the most up to date contact information
on the user's phone on a daily basis.
4. Troubleshooting
4.1 Given a scenario, explain the troubleshooting
theory
1. For effective communication, you need to spend roughly
50 percent of time for listening to your customer
2. The customer was obviously concerned when he reported
the matter to you. Appropriate action would be to apologize
to the customer, and assure him that it would not happen again.
You need to report this to the manager, so that necessary action
is taken to educate the technician that misused the office time.
3. The customer would be expecting you at the specified time.
It is appropriate to call the customer over phone, and inform
him that you would be late. Sending an email may not be the
best option, since the customer may not see his/her email often.
Your colleague may not convey the message to your customer appropriately.
4. When attending to the computer maintenance or repair (other
than the monitor), ensure that you work in a static free environment.
Always wear wrist strap. You should not wear clothes/shoes that
produce static charges.
5. When working on computers, use special ESD wrist strap.
Do not directly ground yourself with a piece of wire. An ESD
wrist strap has built-in resistor to prevent electric shock.
Use specially designed grounded ESD mats. Do not wear synthetic
clothing. Place all electronic components into anti static bags.
Anti static bags can be reused. Keep your workplace clean.
6. While doing any hardware up gradation on a laptop (such
as adding more memory, etc), remember to remove the battery
in addition to unplugging of AC mains.
7. You need to take the customer in to confidence, and apologize
to him/her for having lost some important files/folders.
8. You should not give away your login information to anybody
over email. Usually, such emails are not genuine, and intended
for malicious use.
4.2 Given a scenario, troubleshoot common
problems related to motherboards, RAM, CPU and power with appropriate
tools
1. On a personal computer, the general errors and the corresponding
failures are shown below:
-
100-199 : System board failures
-
200-299 : Memory failures
-
300-399 : Key board failures
-
400-499 : Monochrome video problems
-
500-599 : Color video problems
-
600-699 : Floppy disk errors
-
1700-1799: Hard disk problems.
2. Some of the frequently encountered error codes and their
corresponding error messages on a PC are given below:
-
Error Code----Error Message
-
161 - CMOS battery failure: Replace the CMOS battery
-
164 - Memory size error : If the error occurs after memory
upgrade, run SETUP program.
-
201 - Memory test failed : RAM chips failed, one or more
may need to be replace.
-
301 - Keyboard error: You may have to check the key board
3. The IRQ numbers and relevant Standard Device Assignment
are given below. It is important to memorize these values before
going to the exam, as there would be 5-10 questions on IRQs,
and conflicts.
-
IRQ----Standard Device Assignment
-
0-System timer
-
1-Keyboard
-
2-Cascade to IRQ9. Can't be used.
-
3-COM ports 2 and 4
-
4-COM ports 1 and 3
-
5-Parallel Port LPT2. Very often used for sound cards.
-
6-Floppy drive controller
-
7-Parallel Port, LPT1
-
8-Real time clock
-
9-Unassigned (Also redirected from IRQ2)
-
10-Available
-
11-Available. SCSI adapter will usually use this IRQ.
-
12-Mouse or touch pads
-
13-Math co-processor.
-
14-Primary hard-disk IDE controller
-
15-Secondary hard-disk IDE controller.
4. A toner probe is an electronic test instrument to help
trace wires. One part (the tone generator) induces a tone on
a pair of wires, and with the other you part (the tone probe)
you can detect the tone at the other end to trace where the
wires go. You can trace wires through walls using a tone probe,
and determine which pair is carrying the signal you induced
at the other end.
5. A cable tester is used to verify that all of the intended
connections exist and that there are no unintended connections
in the cable being tested. When an intended connection is missing
it is said to be "open". When an unintended connection exists
it is said to be a "short" (as in short circuit). If a connection
"goes to the wrong place" it is said to be "miswired" (the connection
has two faults: it is open to the correct contact and shorted
to an incorrect contact).
6. The main difference between a cable tester and a toner
probe is that in the former, you have access to the both ends
of the cable at the same time, and you normally to Open or Short
testing (to determine right pins are connected), and in the
latter, you dont have simultaneous physical access to both ends
of the cable.
An AT computer will have two interrupt controllers. The second
interrupt controller needs to deliver the interrupts through
the primary interrupt controller. IRQ2 had been identified for
this purpose on the primary and IRQ9 on the secondary interrupt
controllers. In other words, IRQ2 and IRQ9 are cascaded.
7. AT style systems use two power connectors, P8 and P9 to
connect to the motherboard. ATX systems use only one P1 connector
to connect to the motherboard.
8. If you are getting a keyboard error, you need to do one
of the following things:
-
a. Check if the keyboard needs to be cleaned
-
b. Check if the keyboard cable has become loose
-
c. Check if one or more of the keys are stuck
-
d. If required, replace the keyboard.
9. The battery is supposed to provide backup in the event
of any power failure, typically up to 2 hours or more.
10. The best ways to find whether a new hardware is supported
by your Windows OS is to check the manufacturer's documentation
first, and then the Hardware Compatibility List (HCL).
