How to replace the battery of Apple iPhone – Apple iPhone 3GS Removal and replacement

Apple iPhone 3GS: Step by Step battery replacement procedure 

Remove the two 3.7mm Phillips #00 screws from the dock-connector end of the iPhone.

Remove the metal handle from the suction cup. It's easier and safer to grip the suction cup's base instead of the metal handle. Be very careful when opening the iPhone so that the cables under the display are not severed. There is a rubber gasket between the silver front bezel and black display assembly. A bit of force is required in this step to separate the iPhone's display assembly. It may help to rock the suction cup back and forth to remove the display assembly. Use a small suction cup near the Home button to gently pull up the bottom portion of the iPhone's display assembly. If the display assembly is too damaged to allow the suction cup to adhere, tape with a strong adhesive such as duct tape or packing tape may be used.

The display assembly is still connected to the iPhone by several cables, so don't try to remove it entirely just yet. Rotate the display assembly up until it is at an angle of approximately 45 degrees.

Continue to hold the display assembly with one hand, and use your other hand and a spudger to disconnect the black ribbon cable labeled "1". (Cable 1 is for the display)

Be careful to insert the spudger from the left, as shown in the picture (UNDER THE RIBBON). If you try to pry up the ribbon from the right, you could damage the ribbon connector and need to replace the display!

Al l connectors except the ribbon connector mentioned in step 7 release upwards.

Rotate the display assembly up until it is roughly vertical. This will allow easier access for disconnecting the remaining cables. Use a spudger to disconnect the black ribbon cable labeled "2". (Cable 2 is for the capacitative touch panel)

Please note: You may find on some non-American (Chinese, European) versions of the 3G that the flip up plastic tab does not exist. In this case you would slide the ribbon cable towards the screen until it is removed. When you assemble it, you would apply pressure to the ribbon to insert it back into the ribbon "socket." Some iPhones may have the connector colors reversed (black plastic tab, white connector) for connector "3". Make sure you're flipping up the tab properly, otherwise you may damage the connector. Use a spudger to flip up the white plastic tab holding the ribbon cable "3" in place. The white tab will rotate up 90 degrees, releasing the ribbon cable. Slide the black ribbon cable out of its connector, and remove the display assembly from the iPhone.

Insert your SIM eject tool or a paper clip into the hole next to the headphone jack. Press down on the tool until the SIM card tray pops out. Grasp the SIM card tray and slide it out of the iPhone. Use a spudger to disconnect the ribbon cable labeled "4."

Use a spudger to disconnect the ribbon cable labeled "5."

Use a spudger to disconnect the ribbon cable labeled "6." If you have an iPhone 3GS, refer to the second picture and use a spudger to disconnect the ribbon cable labeled "7." Be certain that the connectors on the ribbon cables are perfectly aligned with the sockets on the mother board before applying pressure. This may require a magnifying glass or jewelers' loupe.

Remove the following 8 screws: Five 2.3 mm Phillips #00 screws with partial threads securing the logic board to the rear case.

Two 2.3 mm Phillips #00 screws with full threads securing the logic board and camera.
One 2.9 mm Phillips #00 screw from beneath the "Do not remove" sticker.
N ote for re-assembly: The screw that goes next to the camera (bottom right orange highlighted screw) also has a metal strip that holds the camera in place.
Remember to put this strip back in place before you insert the 2.3 mm Phillips #00 screws with full thread next to the camera

Use a spudger to gently pry the camera up and out of its housing in the rear case. The camera cannot be removed entirely yet because it's connected to the bottom of the logic board. Use a spudger to gently pry up the end of the logic board closest to the dock connector. There is a small golden grounding tab on logic board adjacent to the 'do not remove sticker'. Be VERY careful this does not snag on the side of the case when prying up the logic board; it breaks easily. If you have signal problems after removing the logic board, check this ground tab. If the board won't lift up, double check to make sure all the screws securing the logic board have been removed.

Slide the logic board towards the dock connector and out of the iPhone. When replacing the logic board after installing battery, connect the camera to the logic board before inserting it into the case. Then make sure to set the top section of the logic board (where the SIM tray is) in place before settling the rest of the board in place. This is important, as sometimes the SIM card slot will not align into place. Once the top section is in place, the bottom section can be maneuvered into place. You will know the logic board is correctly installed when the SIM tray is aligned with the opening in the iPhone case and the camera module seats neatly into its place.

Use a spudger to pry the battery up from the rear case. The battery is attached with an adhesive strip around the perimeter of the battery. To prevent the battery from bending during the removal process, we recommend against using just the plastic pull-tab . *Note: Removing the battery is NOT necessary for replacing the GPS antenna. It merely gives you more space for removing the headphone assembly (which is also unnecessary to completely remove). The iPhone's battery is attached to the rear case with a mild adhesive. This adhesive usually comes out attached to the battery. If your replacement battery already includes an adhesive backing, you're all set. If your replacement battery doesn't have an adhesive backing, you'll want to transfer the adhesive from your old battery to the new one.

You can use a hair dryer or heat gun on its lowest setting to heat the back of the case. This will help loosen the adhesive bond before using the spudger to separate the battery from the case back.

How to calibrate Vela ventilator

Operational Verification and Calibration

Prior to using the Vela ventilator on a new patient the following checks should be carried out to ensure optimum performance. Verification testing should always be performed “off patient”.

Note: If any portion of the following performance check fails, and you are unable to correct the problem, contact your VIASYS Healthcare Certified Service Technician.

First perform the User Verification Tests (UVTs). To access the UVTs, do the following’
1. After disconnecting the patient, turn the ventilator OFF (i.e., STANDBY).
2. Press and hold the Accept button.
3. While holding the Accept button, turn the ventilator ON. Continue to hold the button until the ventilator completes the Power On Self Tests (POST).
4. Release the Accept button when the UVT menu appears in the screen. The Audible Alarm sounds. Press Alarm Reset button to clear.

5. Press the Patient Removed touch screen icon, the UVT test selection screen displays.

6. Press the appropriate touch screen icon to begin a test.

Lamp Test
Run this test to check the front lamps to make sure they are functioning properly.
1. Press the LampTest touch screen icon to start the test. The ventilator illuminates all front panel LEDs.
2. Press the LampTest touch screen icon again to turn the LEDs off and exit the test.
Switch Test

Run this test to check the front panel membrane switches to make sure they are working properly.
1. Press the SWITCH TEST icon.
2. Press each membrane switch control in turn. Watch for the name of the control to appear in the message bar at the bottom left of the touch screen as follows:

3. Press the SWITCH TEST icon again to exit the test.

Alarm Test
Run this test to check the audible alarm.
1. Press the Alarm Test touch screen icon to start the test. The audible alarm sounds.
2. Press the Alarm Test touch screen icon again to silence the audible alarm and exit the test.
Filter Test
Run this test to check the differential pressure across the turbine inlet filter. A high differential pressure may indicate a dirty or occluded filter.
1. Press the Filter Test touch screen icon. The turbine accelerates flow to 140 lpm and checks the differential pressure to make sure it is within range. At the end of the test, the ventilator displays a pass or fail message. If the test passes, the following message appears:

x.x Passed

where x.x is the average turbine differential pressure and P indicates the test passed. If the test fails, the following message appears:

x.x Failed

where x.x is the average turbine differential pressure and F indicates the test failed:

2. If the test fails, check the rotation of the turbine inlet filter to make sure that the seam is horizontally oriented and run the test again. If the test fails again, contact a Bird Certified Service Technician.

Leak Test

Note:This test should be performed with all circuit accessories installed (e.g., humidifier, water traps, and so on.) Make sure al connections are secure and all openings occluded before beginning the test.

Run this test to make sure the patient breathing circuit is not leaking.
1. Attach a one-liter test lung (P/N 33754) at the patient breathing circuit wye.
2. Press the Leak Test touch screen icon to run the test. The test begins by increasing the pressure in the patient breathing circuit to 60 cmH2O. The ventilator then displays the following messages in sequence:

Leak test requested
Leak test in progress

3. The ventilator then waits 10 seconds and measures the circuit pressure again. If the difference between the starting and ending measurements is less than or equal to 6 cmH2O, the test passes and the ventilator displays the following message:

xx.x Passed

where xx.x is the ending measurement.
4. Otherwise, if the difference is more than 6 cmH2O, the test fails and the ventilator displays the following message:
xx.x Failed

5. If the test fails, check all connections to make sure there are no leaks and repeat the test.
Exit
To exit the UVTs press the EXIT touch screen icon.

HP ENVY 8 Note 5000 Tablet – Disassembling procedure

HP ENVY 8 Note 5000 Tablet – Disassembling procedure – How to remove the back cover – how to remove the battery – How to remove the frame

How to remove White back cover

Before removing the white back cover, follow these steps:
1. Turn off the tablet. If you are unsure whether the tablet is off, turn the tablet on, and then shut it down through the operating system.
2. Disconnect the power from the tablet by unplugging the power adapter cord from the tablet.
3. Disconnect all external devices from the tablet.
Remove the white back cover:

1. Place the tablet on a flat surface, display panel side down.

2. Insert a thin tool (2) at the bottom right edge of the white cover, and use the tool to release the cover from the clips and adhesive holding it to the tablet.
3. Lift the cover (3) away from the tablet.

How to remove Black back cover

Before removing the black back cover, follow these steps:
1. Turn off the tablet. If you are unsure whether the tablet is off turn the tablet on, and then shut it down through the operating system.
2. Disconnect the power from the tablet by unplugging the power adapter cord from the tablet.
3. Disconnect all external devices from the tablet.
4. Remove the white back cover
Remove the black back cover:

1. Place the tablet on a flat surface, display panel side down

2. Using a heat gun, gently heat a small portion the black back cover to loosen the adhesive. Keep the heat away from the camera.

3. Insert a thin tool (1) at the inside edge of the black cover.

4. Lift the cover (2) and peel to remove.

How to remove Middle frame

Before removing the middle frame, follow these steps

1. Turn off the tablet. If you are unsure whether the tablet is off  turn the tablet on, and then shut it down through the operating system.
2. Disconnect the power from the tablet by unplugging the power adapter cord from the tablet.
3. Disconnect all external devices from the tablet.
4. Remove the following components:
a. Micro SIM/microSD card tray
b. White back cover
c. Black back cover
Remove the middle frame:
1. Place the tablet on a flat surface, display panel side down.
2. Remove the 4 larger 4 mm P0 Phillips head screws from the middle frame.

3. Remove the remaining fourteen 2 mm P0 Phillips head screws that secure the middle frame to the tablet.

4. Insert a thin tool (1) where the display is connected to the frame, and then slide the tool around the frame to separate the frame from the display.

5. Remove the frame (2).

How to remove Side key buttons

Before removing the side key buttons, follow these steps:
1. Turn off the tablet. If you are unsure whether the tablet is off turn the tablet on, and then shut it down through the operating system.
2. Disconnect the power from the tablet by unplugging the power adapter cord from the tablet.
3. Disconnect all external devices from the tablet.
4. Remove the following components:
a. Micro SIM/microSD card tray
b. White back cover
c. Black back cover
d. Middle frame
Remove the side key buttons:
1. Place the tablet on a flat surface, display panel side down.

2. Push in on the side key buttons, and then remove the button tray up away from the tablet.

How to remove Battery

Before removing the battery, follow these steps:
1. Turn off  the tablet. If you are unsure whether the tablet is off turn the tablet on, and then shut it down through the operating system.
2. Disconnect the power from the tablet by unplugging the power adapter cord from the tablet.
3. Disconnect all external devices from the tablet.
4. Remove the following components:

a. Micro SIM/microSD card tray
b. White back cover
c. Black back cover
d. Middle frame
Remove the battery:
1. Lift the black plastic thermal pad (1) up and away from the battery.
2. Disconnect the battery cable (2) from the system board.

3. Grasp the pull-tab on one of the 3 strips of tape and then carefully and slowly pull straight away, parallel with the tablet, until the entire strip has been removed. After releasing the 3 stretch-release tapes, carefully remove the battery (3) from the tablet.

HP Chromebook 14 – Disassembling procedure

Disassembling procedure – How to remove the key board – How to remove the Battery – How to detach the display unit - HP Chromebook 14

HP Chromebook 14: disassembling procedure 

How to remove Keyboard/top cover

Before removing the disassembling the computer, follow these steps:
1. Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
Remove the keyboard/top cover:
1. Close the computer.
2. Turn the computer upside down, with the front toward you.

3. Remove the thirteen Phillips PM2.5×6.5 screws that secure the keyboard/top cover to
the computer.

4. Lift the front end of the keyboard/top cover (1) and swing it up and back until the left and right edges detach from the base enclosure.

5. Lift the keyboard/top cover (2) until the back edge detaches from the base enclosure.
6. Slide the keyboard/top cover (3) forward until the keyboard and TouchPad ribbon cables
are accessible

7. Release the zero insertion force (ZIF) connector (1) to which the keyboard cable is attached, and then disconnect the keyboard cable (2) from the system board.

8. Release the ZIF connector (3) to which the TouchPad cable is attached, and then disconnect the TouchPad cable (4) from the system board.

How to remove Battery

Before removing the battery, follow these steps:

1. Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the keyboard/top cover
5. Remove the speakers

Remove the battery:
1. Disconnect the battery cable from the system board.

2. Remove the Phillips PM2.5×4.5 screw (1) that secures the battery to the base enclosure.

3. Lift the left side of the battery (2) until the battery is clear of the alignment post (3) in the middle of the battery.
4. Release the battery (4) by sliding it to the left.

5. Remove the battery (5) by sliding it forward.

How to remove Display assembly

Before removing the display assembly, follow these steps:
1. Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the keyboard/top cover
5. Disconnect the battery cable from the system board

Remove the display assembly:
1. Disconnect the display panel cable (1) from the system board.
2. Disconnect the WLAN antenna cables (2) from the terminals on the WLAN module.

3. Release the WLAN antenna cables from the routing channel (3) built into the base enclosure.
4. Disconnect the WWAN antenna cables (4) from the terminals on the WWAN module.

5. Release the WWAN antenna cables from the routing channel (5) built into the base enclosure.

6. Remove the two Phillips PM2.5×5.5 screws (1) that secure the display assembly to the

base enclosure.

7. Remove the display assembly (2).

Apple iPhone speaker replacement procedure – Apple iPhone 6 Earpiece Speaker removal and replacement Apple iPhone 6

Disassembling procedure 

Power off your iPhone before beginning disassembly. Remove the two 3.6 mm Pentalobe screws next to the Lightning connector.

The next three steps demonstrate using the iSclack, a great tool for safely opening the iPhone 6 that we recommend for anyone doing more than one repair. If you aren't using the iSclack, skip to Step 5. If the plastic depth gauge is attached at the center of the iSclack, remove it now it's not needed for larger phones like the iPhone 6. Close the handle on the iSclack, opening the suction-cup jaws.

Place the bottom of your iPhone in between the suction cups. Position the iSclack's upper suction cup against the display, just above (but not covering) the home button.

Open the handles to close the jaws of the iSclack. Center the suction cups and press them firmly onto the top and bottom of the iPhone

Hold onto your iPhone securely and close the handle of the iSclack to separate the suction cups, pulling the front panel up from the rear case. The iSclack is designed to safely open your iPhone just enough to separate the pieces, but not enough to damage the display cables. Peel the two suction cups off your iPhone.

If you don't have an iSclack, use a single suction cup to lift the front panel: Press a suction cup onto the screen, just above the home button.

Be sure the cup is pressed securely onto the screen to get a tight seal.

While holding the iPhone down with one hand, pull up on the suction cup to slightly separate the front panel assembly from the rear case. Take your time and apply firm, constant force. The display assembly is a much tighter fit than most devices.
Using a plastic opening tool, begin to gently pry the rear case down, away from the display assembly, while continuing to pull up with the suction cup. There are several clips holding the front panel assembly to the rear case, so you may need to use a combination of the suction cup and plastic opening tool to free the front panel assembly.

Pull the plastic nub to release the vacuum seal on the suction cup. Remove the suction cup from the display assembly.

Pull the home button end of the front panel assembly away from the rear case, using the top of the phone as a hinge.

Keep the front panel supported at a 90º angle in relation to the rear case until you remove it allowing it to fall flat will strain the display cables and their connections on the logic board

Several clips along the top edge of the front panel form a partial hinge, allowing the front panel assembly to swing open like a book. During reassembly, align the clips just below the top edge of the rear case. Then, slide the ront panel upward until its top edge is flush with that of the rear case.

Remove the following five Phillips screws securing the front panel assembly cable bracket:

Three 1.2 mm screws

 One 1.7 mm screw
One 3.1 mm screw

Remove the front panel assembly cable bracket from the logic board.

In the next four steps, take care to pry up only on the cable connectors, and not on their sockets on the logic board. Use the flat end of a spudger to disconnect the front-facing camera and sensor cable connector.

Use the flat end of a spudger to disconnect the home button cable connector.

Use the flat end of a spudger to disconnect the display data cable connector. When reassembling your phone, the display data cable may pop off its connector. This can result in white lines or a blank screen when powering your phone back on. If that happens, simply reconnect the cable and power cycle your phone. The best way to power cycle your phone is to disconnect and reconnect the battery connector.

Use the flat end of a spudger to disconnect the digitizer cable connector.

Remove the front panel assembly from the rear case.

Remove the following Phillips #00 screws from the earpiece speaker/front-facing camera bracket:
One 2.3 mm screw
One 3.0 mm screw
One 2.2 mm screw

Remove the earpiece speaker/front-facing camera bracket from the front panel.

Lift the front-facing camera out of its recess in the front panel.

Holding the front-facing camera out of the way, remove the earpiece speaker from the front panel. Be careful not to touch any of the contacts on the speaker or the cable, oils can damage them and interrupt the connection.

How to replace the display of Sony Xperia Z - How to replace the display of Sony Xperia Z3

Sony Xperia display replacement procedure –Sony Xperia Z Display replacement procedure 

Warm the Battery cover before disassemble it.

Carefully' warm the battery and remove it. Be sure not to overheat the battery

Unscrew 4x screws and disconnect 3x flex cables in case to free the mother board.

Remove the mother board

Remove main Camera, front Camera and antenna wire Flex cable.

Remove The Headphone connector and the Ringer / Cover / Signal Antenna module.

Disconnect the LCD light flex cable by lifting up the black plastic and removing the flex

cable from the right side and we are ready to go.

Remove the touch panel . Warm the Touch screen before you start to disassemble it.

Sony Xperia Z3 Display replacement procedure 

Remove back cover. Slightly warm up the cover before removal

Then remove the back frame

Release LCD screen connector.

Remove the Digitizer and display after  Slightly warming up 

Heat up for 3 minutes, cut the sticker with much more effort and take the screen with earpiece on carefully

Remove the earpiece from screen. And need to put it back when place the new screen.

HP ENVY Sleekbook 6 – Disassembling procedure – How to remove the keyboard – How to remove the top cover – How to replace the battery

HP ENVY Sleekbook 6: disassembling procedure 

How to remove Base enclosure

Before disassembling the computer, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adaptor from the computer.
Remove the base enclosure:
1. Turn the computer face down, and then remove the 12 Phillips PM 7.5 millimeter long screws.

2. Remove the bottom enclosure.

How to remove Battery

Before removing the battery, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adaptor from the computer.

4. Remove the base enclosure 
Remove the battery:
1. Turn the computer right-side up, with the front toward you.

2. Disconnect the battery cable.

3. Move the battery cable to the side (1), and then remove the 6 Phillips PM 2.5×4.2 screws (2) that secure the battery to the computer.
4. Remove the battery from the computer (3).

How to remove Hard drive

Before removing the hard drive or SSD, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the base enclosure
5. Disconnect the battery cable
Remove the hard drive:
1. Disconnect the hard drive cable from the system board (1), and then remove the 4 screws (2) securing the hard drive to the top cover.

2. Remove the hard drive (3).

How to remove RTC battery

Before removing the RTC battery, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the base enclosure
5. Disconnect the battery cable 

Remove the RTC battery:
1. Use a thin, non-conductive tool to remove the RTC battery from the socket on the system board.

2. Hold down the media card reader board (2), and remove the RTC battery (3). (The RTC battery is also attached to the system board by foam material rather than double-sided adhesive.)

How to remove TouchPad module

Before removing the TouchPad button board, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the base enclosure
Remove the TouchPad button board and cable:
1. Turn the top cover upside down, with the back edge toward you.
2. Disconnect the cable (1) that secures the TouchPad cable to the system board.
3. Remove the 4 Phillips PM 2.5×3.0 black screws (2) that secure the TouchPad button board to the top cover.
4. Remove the 2 Phillips PM 2.5x3.0 silver screws, and then remove the TouchPad bracket (3).

5. Lift up on the rear edge, slide backwards, and then remove the TouchPad button board and cable (4).

How to remove rhe  Keyboard

Before removing the keyboard, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the base enclosure 

Remove the keyboard:
1. Turn the computer right-side up with the front facing you.
2. Remove the 16 Phillips PM 2x3 screws.

3. Remove the single screw (1), and then release the keyboard and keyboard bracket from the top cover (2).

4. Remove the 1 Phillips PM 2.5x3 screw securing the keyboard to the bracket (1), disconnect the keyboard cable (2) (pushing it through the bracket), and then remove the keyboard from the bracket (3)

How to remove Top cover

Before removing the top cover, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the base enclosure
5. Disconnect the battery cable
Remove the top cover:
1. Turn the computer right-side up, with the front toward you.
2. Open the computer.
3. Remove the 3 screws from each hinge on the top cover (1), and then remove the top cover (2).