Unit 1: HEALTH AND SAFETY - INFOTECH 100



SPOT VALLEY HIGH SCHOOLINFORMATION TECHNOLOGY WORKBOOKGRADE 9Term 1D WatkisUnit 1: HEALTH AND SAFETYObjectives:Students will:● Investigate and resolve basic computer hardware problemsHealth and SafetyWhat is troubleshooting?Troubleshooting is the process of identifying, planning and resolving a problem, error or fault within a software or computer system. It enables the repair and restoration of a computer or software when it becomes faulty, unresponsive or acts in an abnormal way.What is Computer hardware?Computer hardware refers to the physical parts of a computer and related devices. Internal hardware devices include motherboards, hard drives, and RAM.What is a checklist?a list of items required, things to be done, or points to be considered, used as a reminder.Preventative maintenanceThis is maintenance that is regularly performed on a piece of equipment to lessen the likelihood of it failing. It is performed while the equipment is still workingTroubleshooting common computer hardware devicesPrinter issueThe printer is not responding after you have sent a document to it for printing.Basic Printer Troubleshooting ChecklistIf you run into a printer issue that can’t be fixed with this checklist, it is something that will need serious attention.1. Turn off the printer, turn it back on2. Turn off the computer, turn it back on3. Check the connections4. Check the statusIn some instances, the printer will tell you exactly what is wrong with it. Go to the Control Panel and select Devices and Printers. Click on the printer that is having problems. It will usually tell you what is wrong.5. Check the print queueMake sure someone else hasn’t clogged the queue with a bunch of print jobs. If you have permissions, clearing problematic print jobs can get the printer back up and running.6. Invest in a new printerMouse IssueThe mouse pointer isn’t responding when the mouse is movedThere is no light being emitted from the bottom of the device (where you are using a laser based device)Basic Mouse Troubleshooting ChecklistTry the following:The USB connection may be loose. Try unplugging the mouse and plugging it back in.Plug the mouse into a different USB port.If your mouse is plugged into a USB hub or USB switch box, try removing it and plugging it directly into the computer.Unplug other USB devices that are not in use.Try the mouse on another computer to verify it is not defective.If you are using a wireless mouse:Reset the power to the deviceIf your device has a power switch, turn the device off.If your device has removable batteries, remove the batteries and reinstall them. Make sure that they are positioned correctly.If your device has a power switch, turn the device on.Check the batteries (rechargeable)Try charging the device. It may take an hour or more to fully charge your device. See the documentation that is included with the device.Check the batteries (non-rechargeable)Make sure that you have installed the correct type of batteries in the device. For information about the batteries, see the documentation that was included with the device.Replace all the batteries with new batteriesTroubleshoot wired keyboards that don't respond or that type wrong charactersProblems:The keyboard is not detected.The keys on the keyboard do not work.Wrong characters are typed.The keyboard shortcuts do not work.Wired keyboard Troubleshooting checklistStep 1: Verify the connectionTo connect or to disconnect the keyboard to a PS/2 port, follow these steps:Shut down the computer.Plug your device into the correct port. Make sure that the plug is pushed securely into the connector on the computer.Restart the computer. Microsoft Windows detects the change, and then installs the drivers on the new port automatically.Step 2: Download and install the latest keyboard softwareStep 3: Manually reinstall the driversThe keys do not strike correctlyIf the keys do not strike correctly, make sure that the keyboard is free of dust, dirt, and foreign matter.Turn the keyboard upside down to allow for any foreign debris, such as hair, food particles, or dust, to fall out.periodically use compressed air to blow dust out of the hard-to-clean crevices in the keyboard.Troubleshooting wireless and Bluetooth keyboard issuesKeyboard issueThe keyboard isn’t respondingBasic wireless keyboard Troubleshooting ChecklistCheck the batteries (non-rechargeable)Make sure that you have installed the correct type of batteries in the device. For information about the batteries, see the documentation that was included with the device.Replace all the batteries with new batteries.?NoteIf you still receive warnings after replacing the batteries, continue with the other solutions provided in this article.Reset the power to the deviceIf your device has a power switch, turn the device off.If your device has removable batteries, remove the batteries and reinstall them. Make sure that they are positioned correctly.If your device has a power switch, turn the device on.Check for software updates Check for updatesOn Windows 7 and Windows 8.1, press the Windows logo +R, type Control Panel, select OK, select System and Security, and then select Windows Update.Download and install any high-priority updates, and custom updates, especially those related to hardware.? NoteFor Windows 10, the system will install important updates automatically.Check the USB connection between the computer and the transceiver Unplug and re-plug the transceiverUnplug the wireless transceiver and then plug it in again.If the wireless transceiver is plugged into a USB hub, unplug the hub and then plug it in again.Connect the wireless transceiver to another port on the same computerIf you have multiple USB ports, plug the wireless transceiver into a different USB port on the same computer.If the wireless transceiver is plugged into a USB hub:?? Plug the hub into a different USB port on the same computer.Make sure that you are using a powered hub that is appropriate for high-powered USB devices.Try plugging the wireless transceiver directly into a USB port on the computer.Refresh the wireless connection Connect all other Microsoft wireless devicesPress the button on the wireless transceiver.Press the Connect button on the underside of the device.Optimize the signal Check the placement of the wireless deviceThe wireless transceiver and device must be situated correctly. Try the following solutions:Place the wireless device closer to the wireless transceiver.If you have a mouse and keyboard and they are both wireless, place them at an equal distance from the transceiver.Turn the transceiver on its side or upside down.Some wireless and non-wireless objects can cause interference with your wireless device. To prevent transceiver interference, avoid using your device near objects such as:Wireless networking devicesCordless and cellular telephonesRemote control toysMicrowave ovensCables running parallel to the wireless transceiver cablesMetallic surfaces in contact with the deviceOther wireless pointing devices and transceiversSetting up a Bluetooth device You can use the following information to help troubleshoot a problem with your Bluetooth wireless device (keyboard or mouse).Check the connection between your computer and the Bluetooth transceiverMake sure Bluetooth is on.?If you are connecting your device by using an internal Bluetooth connection, make sure wireless connections are active. Many portable computers have a switch, a key, or a keyboard shortcut that activates the wireless connections.Turn on Bluetooth on your computer if your mouse or keyboard does not have its own transceiver.If your mouse or keyboard does not include its own transceiver, your desktop, notebook, or portable computer must have a transceiver built into the computer or you must use a non-Microsoft external transceiver. How the mouse or keyboard will connect to the computer by Bluetooth, and how to turn on Bluetooth, varies depending on how it is implemented on the computer. You may have to contact the computer manufacturer or the manufacturer of the Bluetooth transceiver to find out how to turn on Bluetooth on the computer and how to add a device to it.Refresh the wireless connection to your Bluetooth devicePair your Bluetooth device to your computer.Re-establish a wireless link if your computer does not detect a Bluetooth-enabled Microsoft device.If you try to use a Bluetooth-enabled Microsoft wireless keyboard or mouse and the input device does not work, it may be because your computer does not detect the device. To resolve this issue on a Windows computer, re-establish the wireless link with the computerResolve a connection failure when the setup software cannot connect to a Bluetooth-enabled Microsoft device During the installation process, if the setup software fails to connect to the device through a Bluetooth connection, you must change the transceiver to use a hardware-managed Bluetooth mode.Open the Bluetooth program There are several versions of Bluetooth programs that help you connect your device to your Bluetooth wireless transceiver. See the documentation that was included with your computer or contact the computer manufacturer for information on how to use their program.HardwareBluetooth software locationFor some computers that have Windows 10Select Start ? > Settings ?> Devices ?> Bluetooth.For some computers that have Windows 8.1Open Charm > Settings > Change PC settings > PC and devices > Bluetooth.For some computers that have Windows 7Select Start > Control Panel > Hardware and Sound > Bluetooth Devices.For some Toshiba computersClick Start > All Programs > Toshiba > Bluetooth > Bluetooth Settings.Other computersSee the documentation that was included with your computer or contact the computer manufacturer.NoteIf your computer cannot detect a Bluetooth transceiver, the Bluetooth software will not be available in the Windows menus.Establish a Bluetooth connection when a device is unresponsiveIf the Bluetooth connection cannot be established, you may have to remove the unresponsive device from the system and then add it back.On your computer, open the Bluetooth program. The Bluetooth program is usually found either in Control Panel or in the Settings app.If the unresponsive Bluetooth device is listed, select it and then select Remove device.To reconnect the device to your computer, press and hold the Connect button on the underside of the device for a few seconds. When the light on top of the device blinks red and green, the device is discoverable to other Bluetooth devices for 2 minutes.In the Bluetooth program, wait until the Bluetooth device shows up in the list, select the device, and then use the option to add a new device.Why there is a delay before a Bluetooth mouse responds after it has been inactive To extend battery life, Bluetooth devices go into hibernation after 8-10 minutes of inactivity. It can take several seconds for the Bluetooth mouse to reconnect when you resume using it after this period of hibernation. As a result, you may notice a delay between the time that you use the mouse and the response on the screen.Use other Bluetooth devices with the Microsoft Wireless Transceiver for Bluetooth Bluetooth wireless technology lets you connect multiple compliant devices to your computer. You may be able to use other Bluetooth devices with the Microsoft Wireless Transceiver for Bluetooth, but this connectivity is not always supported by Microsoft.For newer devices, download the latest version of the software from the Hardware Download Software Web page.Connecting the Wedge Mobile Keyboard to a tablet PC By default, the Bluetooth Wedge Mobile Keyboard pairs with most tablet PCs through secure simple pairing (SSP) with a passkey. Some tablets, however, may not support SSP well with a passkey.In order to successfully pair your Wedge Mobile Keyboard to such a tablet, use the following alternative pairing mode.Pair your keyboard through SSP without a passkey Press and hold the Fn key at the same time as you press and hold the Connect button located under the keyboard. After 3 to 5 seconds, a small light on the top of the keyboard will blink green and red alternately. This means that your keyboard is discoverable to your tablet within 6 minutes.On your tablet PC, in the search box on the taskbar, type Control Panel, select Control Panel from the search results,?and in Category view, locate Hardware and Sound.Select Add a device.When the keyboard is listed, select it, and follow the instructions to successfully pair your Wedge Keyboard with your tablet.? NoteIf you want to pair your keyboard with a tablet or other computer that supports SSP with a passkey, press and hold the Connect button only.?Bluetooth Disconnection issue If Bluetooth disconnects:Select the Start??button > Device Manager.In Device Manager, select the arrow next to Bluetooth, and then double-click the Bluetooth device.Select the Power Management tab and then clear the Allow the computer to turn off this device to save power?check box.A Bluetooth mouse or keyboard fails to reconnect after being left idle After not using your Bluetooth mouse or keyboard for some time, you may not be able to use the device again without rebooting the system or turning your Bluetooth radio off and back on.ActivityExamine the image below then answer the related questions that follow. ................
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