Lenovo ThinkPad Edge 13 – How to test the AC adapter – How to check the battery pack - How to check the Backup battery

Lenovo ThinkPad Edge 13:  Power system checkout
To verify a symptom, do the following:
1. Turn off the computer.
2. Remove the battery pack.
3. Connect the AC adapter.
4. Check that power is supplied when you turn on the computer.
5. Turn off the computer.
6. Disconnect the AC adapter and install the charged battery pack.
7. Check that the battery pack supplies power when you turn on the computer.
If you suspect a power problem, see the appropriate one of the following power supply checkouts:
“Checking the AC adapter”
“Checking operational charging”
“Checking the battery pack”
“Checking the backup battery”
Checking the AC adapter
You are here because the computer fails only when the AC adapter is used.
If the power-on indicator does not turn on, check the power cord of the AC adapter for correct continuity and installation.
To check the AC adapter, do the following:
1. Unplug the AC adapter cable from the computer.
2. Measure the output voltage at the plug of the AC adapter cable. See the following figure

Note: Output voltage of pin no.2 of the AC adapter may different from the one you are servicing.

3. If the voltage is not correct, replace the AC adapter.
4. If the voltage is acceptable, do the following:
Replace the system board.
Note: Noise from the AC adapter does not always indicate a defect.

Checking operational charging
To check whether the battery charges properly during operation, use a discharged battery pack or a battery pack that has less than 50% of the total power remaining when installed in the computer. Perform operational charging. If the battery status indicator or icon does not turn on, remove the battery
pack and let it return to room temperature. Reinstall the battery pack. If the charge indicator or icons till does not turn on, replace the battery pack.
If the charge indicator still does not turn on, replace the system board. Then reinstall the battery pack. If it is
still not charged, go to the next section.
Checking the battery pack
Battery charging does not start until the Power Manager Battery Gauge shows that less than 96% of the total power remains; under this condition the battery pack can charge to 100% of its capacity. This protects the battery pack from being overcharged or from having a shortened life. To check your battery, move your cursor to the Power Manager Battery Gauge icon in the icon tray of the Windows taskbar and wait for a moment (but do not click), and the percentage of battery power remaining
is displayed. To get detailed information about the battery, double-click the Power Manager Battery Gauge icon.
Note: If the battery pack become shot, it may not be able to charge. Remove it from the computer and leave it at room temperature for a while. After it cools down, reinstall and recharge it.
To check the battery pack, do the following
1. Power off the computer.
2. Remove the battery pack and measure the voltage between battery terminals 1 (+) and 7 (-). See the above figure:
Note: ThinkVantage Toolbox through the "System Health" or through Diagnostics" features will proactively determine if the replacement of battery pack is required. A "POOR" condition indicates battery replacement is required for proper operation.

3. If the voltage is less than +11.0 V dc, the battery pack has been discharged.

Note: Recharging will take at least 3 hours, even if the indicator does not turn on. If the voltage is still less than +11.0 V dc after recharging, replace the battery.
4. If the voltage is more than +11.0 V dc, measure the resistance between battery terminals 5 and 7. The resistance must be 4 to 30 K Ω. If the resistance is not correct, replace the battery pack. If the resistance is correct, replace the system board.
Checking the backup battery
Do the following:
1. Power off the computer, and unplug the AC adapter from it.
2. Turn the computer upside down.
3. Remove the battery pack
4. Remove the backup battery
5. Measure the voltage of the backup battery. See the following figure.

If the voltage is correct, replace the system board.

If the voltage is not correct, replace the backup battery.
If the backup battery discharges quickly after replacement, replace the system board.

Samsung Galaxy Note – Disassembling procedure – How to replace the Speaker – How to remove the case

DISASSEMBLING PROCEDURE 

Grasp the cap of the stylus and remove it from its slot in the midframe.

Pry with a plastic opening tool, or your fingernail, in the divot to the right of the rear-facing camera, near the volume rocker.

Lift and remove the rear case from the phone.

Battery removal 

Insert your finger in the notch of the battery compartment. Press the battery toward the rear facing camera while pulling outward.

Use the flat end of a spudger, or your fingernail, to press the microSD card slightly deeper into its slot until you hear a click.

After the click, release the card and it will pop out of its slot.

For reassembly, push the microSD card into the slot until it clicks in place.

Remove the microSD card from its slot in the midframe.

Use a plastic opening tool, or your fingernail, to push the SIM card out of its compartment.

Slide the SIM card out the rest of the way with your thumb and remove it from the device.

Remove the nine 3.4 mm Phillips #00 screws securing the midframe to the display assembly.

Insert your plastic opening tool to the left of the power button between the midframe and the front panel assembly and pry.

Slide the plastic opening tool down the seam.

Insert your plastic opening tool to the left of the headphone jack between the midframe and the display assembly. Slide the opening tool along the top edge of the phone. Continue to run the plastic opening tool around the perimeter of the phone until the midframe is separated.

Remove the midframe from the display assembly.

Remove the three 3 mm Phillips #00 screws securing the speaker enclosure to the front panel assembly.

Remove the speaker enclosure from the display assembly.

Apple iPhone: user tips - How to turn LTE off to save battery

This will save some battery life when you’re in a pinch.
Start by going to Settings, then tap Cellular. The second option is a toggle for “Enable LTE.” When you need to save some battery and can spare Internet speed, switch this option off

Lock your screen orientation

To lock your screen orientation (such as keeping it in Portrait mode) do the following when on the home screen: swipe the screen up from the bottom. You’ll see a new menu (it’s called the Control Center) with a gray circle with an arrow and lock in the upper right corner of the menu. Tap that one time and a lock will appear. When you turn your phone sideways the orientation will stay. To change it back, repeat these same step.

Set an alphanumeric passcode

Setting an alphanumeric password can add an extra layer of protection to your phone, to protect the kids.

To enable, first head to Settings. Next, tap General, navigate to the middle of the page, and select Passcode lock. Turn “Simple Passcode” off and you will be prompted to enter an alphanumeric password.

Tweet a photo directly from your Camera Roll

Go to your camera roll and select a photo. In the bottom left-hand corner, you’ll see an arrow icon. Tap that and a menu will come up.
Choose “Twitter” in the middle row and a menu will come up with the photo attached in the top right corner. Type your tweet, tap Send, and you’re done.

Make the iPod app stop playing after a set amount of time

This tip is handy if you ever fall asleep listening to music. After you’ve selected a song in the Music app, go to the Clock app.
Select the timer option in the bottom right hand corner and set a specific time. Below the time, there is an option that says, “When Timer Ends ...” tap that. At the very bottom of the list is an option for “Stop Playing.” Select this and when the timer is up it will stop the iPod from playing.

Automatically download new apps directly on your iPhone

This is a handy feature if you have a lot of Apple devices. You can make it so that apps and music automatically download on all your devices.

Go to Settings and navigate to the middle of the page. Find and select the “iTunes & App Store” option. Once inside, scroll a little to “Automatic Downloads,” and switch on the options for Music, Apps, Updates, or all
three.

Take a screenshot of your screen

If you want to take a picture of any screen or picture on your device, just go to that screen or picture and hold the Power button while clicking the Home button. The picture will be stored in your Camera Roll.

Find things fast with Spotlight
If you want to search your device for a name, phone number, or other text, go to the home screen and slowly swipe down in the middle of the screen. The Search bar and keyboard will appear. Type what you want to find.

Speed up your phone by selecting what Spotlight indexes

Spotlight is a useful tool for finding stuff on your phone, but if you’ve set it to search your entire phone for every single item present then it can take some time. Have it only search items you care about by starting at Settings, then select General, and finally choose Spotlight search. You can select what your phone indexes and speed up the interface.

Get your draft emails

If you want to get back to a email draft quickly, when in the Mailbox screen, touch and hold the Compose button to see a list of draft emails.

Get more from your PDFs

From a Mail message or a web page, touch and hold the PDF icon or link, then choose from Message, Mail, Print, Look, and other options.

Change your phone’s name
You couldn’t do this in previous iOS versions, but iOS 5 allows you to change your phone’s name directly on the device. Before that, you had to do this through iTunes.
Changing your phone’s name can give it personality. Go to Settings, General, and then About. At the top of the page you’ll see your iPhone’s name - tap it and you can change it to whatever you like.

View websites in full screen

This one’s easy... while browsing a web site in Safari, turn your iPhone to the side (landscape) and it now will adjust to full-screen mode automatically.

Create custom sounds.
You can select a custom sound for your ringtone, texts, voicemails, new mails, tweets, Facebook posts, calendar alerts, and more. To do this one, go to Settings, then tap Sounds. You’ll be able to select custom sounds for each item

Enable Safe Browsing for Safari
When browsing the web in Safari, if you wish to block pop-ups, cookies, or be warned about fraudulent web pages, go to Settings, then Safari, and adjust these settings. Start in Settings, then Safari, and in the middle of the page switch Private Browsing on.

Use Emoticons to give emails and texts some flair
To enable the Emoji keyboard, go to Settings. Tap General, tap Keyboards, then select Add New Keyboard. Find Emoji and select it. Exit by hitting the Home button. Now, when composing a text or email, click on the globe icon at the bottom left of the alphanumeric keyboard to toggle over to the Emoji keyboard. From there you’ll want to select, “Add new keyboard,” once inside that menu you’ll scroll down until you see “Emoji”. Select Emoji. Leave out of settings by pressing the home button and head to a text, note, or new email message.
Start typing and you’ll see a globe icon in the bottom left corner tap that once to toggle between the alpha-numeric keyboard and the Emoji keyboard.

Take advantage of the ‘Do Not Disturb’ feature

Just inside the Settings menu is Do Not Disturb. You can switch this on at night or anytime you don¹t want to be disturbed by emails, calls, or texts, etc. Go to Settings, then Do Not Disturb. You can set it manually anytime, or schedule it at night, for example, by providing a time range. Other options include having calls screened to only allow Favorites or to block everyone. If someone calls you twice within three minutes, the call will not be silenced. Optional settings for Do Not Disturb:
Scheduled: Automatically enable Do Not Disturb between the hours you specify.
Allow Calls From: Allow calls from everyone, no one, your favorites, or specific contact groups.
Repeated Calls: If someone calls you twice within three minutes, the call will not be silenced.

Use the Notification Center
If you want to see quick notifications from your calendar, social networks, weather or stock updates, and more, swipe down from the top of the home screen to view the Notification Center. To change the settings for Notification Center, go to Settings, then Notification Center. In this menu, you can choose from which functions or apps you want to get notifications.

Use Siri discreetly
In case you don’t want to yell out your question to Siri and have her broadcast it back… Go to Settings, then General, then Siri. The last option in the list will be “Raise to Speak.” Switch that on and the next time you raise your phone to your ear Siri will activate.

Use Siri to set location-based reminders
Siri can be used to set a reminder, like saying “Siri, remind me to call mom at 4pm today.” But did you know you can set location-based reminders on your iPhone? Say “Remind me to call mom when I leave here” or “Remind me to call mom when I get home” and you’ll be notified accordingly.