14. Mobile Devices Flashcards
What should you detach when replacing a wireless network card in a laptop
the antenna
What should you do to ensure that screws are not lots when you remove them from the motherboard and to ensure that the screws are replaced in the appropriate location
Label the screws, and attach them to a piece of tape.
What are the prerequisites for performing a hardware upgrade on a laptop
Disconnect the power and remove the battery
Why will a portable computer prematurely shut down while working on a hotel bed
The bed is not a flat surface and may block much-needed airflow required for cooling
How does a notebook cooler work
A notebook cooler is a pad to rest your portable computer that dissipates heat through fans powered by a USB connection to the computer
If your LCD display is not working on your portable computer, what should you do to test if the LCD screen has failed, or if the video integrated controller on the motherboard has failed?
Test the computer with an external monitor to see if the video integrated controller on the motherboard is working
When the backlight in a portable computer flickers or fails, what component needs to be replaced
the inverter
What are four basic components that can go wron with a portable computer’s video
the video controller, the screen, the backlight, or the inverter
Why should you remove the battery when working on a portable computer
You do not want to accidentally turn on the computer due to a mechanical jolt or a short caused by a screwdriver
Why does a fan on a portable computer stop running shortly after the computer boots up
The fans stops running after the temperature drops to a certain level.
Which feature of a mobile device allows the physical location of the mobile device to be tracked?
the GPS
What is the primary interface used in mobile devices
touch screen
What are the primary touch technologies used in mobile devices
touch flow and multitouch
in which touch technology does finger movement (up, down, left, right) control how the screen scrolls
touch flow
What are wearable technology devices
smart watches, fitness monitors, glasses, and headsets
What is near field communication (NFC)
A short-range high frequency wireless communication technologu that enables the exchange of data between devices over about a 10cm distance
Which feature in a computer or laptop allows you to remove and replace components without reboot?
hot swappable
What is ACPI
Advance Configuration and Power Interface, a technology that configures computers to optimize power consumption
What do you require in order to add expansion cards to a laptop computer
a docking station
What are the compact version of dual inline memory moduels (DIMMS) used in laptops
small outline dual inline memory modules (SO-DIMMs)
Which two types of email servers can be configured as incoming email servers
POP3 or IMAP
Which type of email server can be configured as outgoing email servers
SMTP
Which type of mobile device schronization occurs automatically
push synchronization
Which type of mobile device synchronization must be manually started
pull synchronization
In which touch technologu can more than one finger work with the interface at the same time
multitouch
Which windows features allows you to preserve your portable computer battiers by saving the contents of memory to the disk so they will be available the next time you log in
the hibernate feature
Which keyboard key works like a Shift key to activate the second function of a dual-purpose key
Fn
What does a mirrored display do?
It shows the same desktop as that of the primary display
Card Reader
A small peripheral device that conencts to the mobile device turning it into a point of sale terminal for processing debit or credit card payments
Docking station
a hardware frame and set of electrical connections that allows us to quickly connect and disconnect the mobile device to common desktop computer peripherals
E-reader
a device outwardly similar to a tablet, but with functionality limited to download and reading electronic version of books, magazine, and other documents
Fitness Monitor
a wareable device designed to monitor and track fitness-related infromation, such as distance moved, number of steps, etc
IMAP
Internet Message Access protocol
Internet Message Access Protocol
A protocol that allows users to download messages to their client for offline browings, but retains all messages on the mail server until they delete them
IMEI
Internation Mobile Equipment Identification
Internation Mobile Equipment Identification
A uniqie identifier assigned to your phone by the manufacturer and is used to track stolen device
Phablet
A computer which combines features of a smartphone and a tablet, and is usually intermediate in size between the two
Ways to find one’s IMEI
- Dial *#06#
- check you device back or SIM tray
- on IOS, tap settings -> about
- On Android, tap Settings->about->status
Three types of updates one can make to a mobile device that may add features and increase data speed
- Product Release Instruction
- Preferred Roaming List
- Baseband or radio firmware
PRI
Product Release Instruction
Product Release Instruction (PRI)
contains settings for the device that relate to the cellular network it’s on. This is usually upated in an operating system update
PRL
Prefered Roaming List
Preferred Roaming List (PRL)
contains settings that enable the device to connect to specific cell towers when it’s roaming. This is typically updated during an operating system update
Baseband or Radio Firmware
Names for the component of the wireless device that actually convert radio waves to and from binary data
Install RAM into laptop
- Power down the computer, and disconnect its power cord.
- If the battery is externally accessible, disconnect it. Otherwise, just make sure the computer is off, not just asleep.
- Find and open the memory compartment or, if necessary, open the laptop case.
- If you’re removing an existing module, gently press the metal clips to each side to unlatch and remove it.
- With the new module facing the correct direction, use firm and even pressure to snap it into the memory slot.
- Repeat with any additional memory modules.
- Close and secure the memory compartment or close the laptop case.
- Replace the battery and plug the power cord back into the wall outlet.
- Boot the laptop and verify the system recognizes the new memory.
Replace a laptop system board
- Power down and unplug the computer.
- Remove items which are easily accessible via external compartments.
- Depending on the model, this may include drives, RAM, and the battery.
- Remove all screws from the bottom of the case.
- In most cases, you won’t need to remove the case around the display screen.
- Open the case, being mindful of clips or glue.
- On some models you may begin by removing the bottom cover, while on others you’ll begin with the bezel around the keyboard.
- Remove or disconnect all components blocking full access to the motherboard. Begin with the battery, if possible.
- These may include drives, memory, heat sinks, the wireless card, and its antenna. On some laptops, you will also need to remove the keyboard.
- Disconnect any wires and cards that are connected to the motherboard.
- PCIe cards, display cables, or connectors to external ports.
- Remove motherboard’s mounting screws.
- Remove the old motherboard.
- Use the mounting screws to mount the new motherboard in place.
- Carefully perform each disassembly step in reverse, until the computer is reassembled.
Replace laptop screen
- Power down and unplug the computer.
- Remove the battery as well, if practical.
- Remove the plastic bezel surrounding your display.
- There may be covered screws you have to access and remove. The bezel is usually secured to the back case with plastic snaps. You might also need to gently, but firmly pull it away from the case’s hinges.
- Look for and remove screws holding the screen to the laptop’s lid.
- These will usually be attached to a metal cradle holding the actual screen.
- Gently pry the screen with metal cradle out slightly from the case lid.
- Look for and remove anything securing the screen to the metal cradle.
- This could be side screws, tape, clamps, etc.
- Gently place the detached screen face down on the keyboard and disconnect the display cable from the graphics card.
- There might be tape covering this connection to make sure it stays secure.
- Remove the screen
- Gently place the new screen in the metal cradle and secure them together.
- Repeat all disassembly steps in reverse to reassemble the device, starting by replacing the screen in the lid.
- Double-check all other connections in the display lid before you close it, just in case any were forgotten or dislodged.
- Power on the device to test the display.
Replacing ePCIe cards
- Before beginning, make sure the card is physically compatible with your computer and has drivers for your operating system.
- Cards can be full-height or half-height. You cannot install a full-height card in a slot only sized for half-height devices.
- Some cards have additional connectors such as wireless antennas or display connectors. Make sure your device has a connector compatible with the new card.
- mSATA SSDs use a form factor that’s identical to mini-PCIe, but it isn’t compatible. Make sure you don’t confuse the two, especially on a device which has slots for both.
- Power down and unplug the computer.
- Locate the mini-PCIe card you want to replace.
- Wireless adapters may be accessible from an external panel, while others will require you to open the chassis.
- Mini-PCIe graphics cards will generally be underneath the cooling system, requiring even more disassembly.
- Detach any wires connected to the card, noting locations for later reassembly.
- For wireless cards, gently pry the antenna leads from the terminals with a small flathead screwdriver.
- For other cards, carefully unclip or carefully remove data connectors.
- If the card is secured with screws or clips, remove them.
- Gently slide the card out of the mini-PCIe slot.
- Slide the new card into the slot.
- Use firm, but gentle pressure, making sure you seat the card completely.
- Repeat the disassembly process in reverse, beginning by securing screws and wires to the card.
- Power on the device to install drivers and test functionality.
Replacing laptop keyboards and touchpads
- Power down the computer.
- Unplug the power cable from your laptop.
- Remove the battery.
- You may need to open the chassis to do so.
- Remove the bottom keyboard screw.
- Turn the laptop right-side up.
- Open the notebook so the display is up.
- Access the top keyboard screws.
- If your laptop has a keyboard bezel, unsnap and remove it.
- If your laptop has one, remove the trim piece between the keyboard and the screen.
- The bezel or trim piece might be secured with clips. You should see screws holding the keyboard in place. On some laptops, you might need to remove the entire top panel. Refer to your computer manufacturer’s documentation for specifics.
- Remove any screws holding the keyboard or touchpad to the case.
- On some computers you may need to remove the keyboard to remove the touchpad, or vice-versa.
- Gently lift the device you want to replace up.
- Unplug the keyboard or touchpad ribbon cable from the motherboard.
- The cable typically has a LIF or ZIF connector. Carefully unlatch any latching mechanism. If your computer is backlit, there may also be a power wire for the light.
- Remove the device.
- Plug the new ribbon cable into the motherboard.
- Set the new device in place.
- Repeat all disassembly steps in reverse to reassemble the laptop.
General process for replacing any specific component
- Disassemble the device until the component itself is fully accessible.
- Disconnect any cables.
- Remove any screws or retaining clips.
- Remove the device.
- Install the new device, following the disassembly steps in reverse order.
- Power on the computer to test functions and install software.
