Wednesday, May 11, 2016

Apple iPhone 4S – How to replace the camra of Apple iPhone 4S – Mobiles and Smartphones Repair and Service

Category: Mobiles and Laptops Repair and Servcie 

Contents of this article 

  • How to remove the case 
  • How to disconnect the battery 
  • How to replace the Camera 

Apple iPhone 4

Before disassembling your iPhone, be sure it is powered off. Remove the two 3.6 mm Pentalobe P2 screws next to the dock connector. During reassembly, we recommend you replace the 5-point screws with equivalent Phillips screws.
Push the rear panel toward the top edge of the iPhone. The panel will move about 2 mm.
Pull the rear panel away from the back of the iPhone, being careful not to damage the plastic clips attached to the rear panel.
Remove the rear panel from the iPhone.

Remove the following screws securing the battery connector to the logic board:
One 1.7 mm Phillips screw
One 1.5 mm Phillips screw. Use a plastic opening tool to gently detach the battery connector from the socket on the device. Start lifting off the connector from the bottom side, by placing the tip of the tool between the loudspeaker enclosure and the metal cover of the connector.
The battery connector comes off vertically from the logic board. Do not apply force sideways.
Pay attention to the pressure contact underneath the top screw of the battery connector. This may come loose while prying the battery connector from its socket.

Use a plastic opening tool to pull the pressure contact from underneath the battery connector.
When reinstalling the pressure contact, be sure to clean it with a degreaser such as windex or isopropyl alcohol. The oils on your fingers have the potential to create wireless interference.
Take notice of the position of the small black ground clip on the upper screw of the battery connector. This clip is attached only by the upper screw. When reinstalling, it must be aligned so the gold contact point will press against the back cover.
Be careful not to rip off the battery connector socket soldered on the logic board. There are 4 very small soldering points awaiting this mistake!

Insert the edge of a plastic opening tool between the battery and the outer case near the bottom of the iPhone. Run the plastic opening tool along the right edge of the battery and pry up at several points to completely separate it from the adhesive securing it to the outer case.
Use the exposed clear plastic pull tab to peel the battery off the adhesive securing it to the iPhone. Remove the battery.
Be careful not to pull the plastic pull tab too hard as it can be ripped off very easily.
 Be wary of the outer plastic ring located on top of the rear camera's flash assembly. It can be easily displaced if not removed during disassembly. You can use tweezers, a plastic opening tool, or a spudger to remove the outer plastic ring.
Remove the following four screws securing the cable cover to the logic board:
One 2.7 mm Phillips screw
One 2.6 mm Phillips screw
One 1.3 mm Phillips screw
One 1.2 mm Phillips screw

 
Use the edge of a plastic opening tool to pry the cable cover tabs out of their slots cut into the EMI shield on the logic board. Lift the cable cover from its edge nearest the top and remove it from the iPhone.
Use the edge of a plastic opening tool to pry the rear camera connector up from its socket on the logic board.
Be careful not to break any components off the surrounding area on the logic board as you pry upwards.
Remove the rear camera from the iPhone. There is a small rubber gasket that sits underneath the rear-facing camera. Make sure that it is properly seated before reassembly

Nokia Lumia 625 – Disassembling procedure – How to replace the battrye – How to replace the broken Touch screen glass – Mobiles and smartphones repair and service

Category: Mobiles and Smartphones Repair and Servcie 

Contents of this article 

  • How to remove the case 
  • How to replace the battery
  • How to replace the touch screen 

Nokia Lumia 625

How to replace the battery 
Turn off the phone and remove the back cover.
Remove any installed SIM or memory card.
Use a screwdriver Torx T4 and remove the 8x black screws.
At the top and bottom of the phone you'll see two grooves.
Use a plastic tool and start the separating the rear bezel from here.
Disconnect the battery connector.
Use a plastic tool and unstuck the battery.
Look at the picture to see where is the battery adhesive sticker.
Touch Screen Digitizer Glass Replacement
Turn off the phone and remove the back cover.
Remove any installed SIM or memory card.
Use a screwdriver Torx T4 and remove the 8x black screws.
At the top and bottom of the phone you'll see two grooves.
Use a plastic tool and start the separating the rear bezel from here.
Disconnect the battery and the touch screen flex cables.
Now is the moment for test the new spare part.
Finally, disconnect the battery again and remove the new touch screen.
Put some scotch tape to prevent the glass from shattering and yourself from injury.
Use a hair dryer and warm the glass to make adhesive soften.
With a cutter separate the glass a little bit to make a room for the plastic pick or other
plastic tool.
Be careful for the LCD. You can use a hair dryer again to rewarm the glass.
Clean the frame of the old adhesive tape and install new.
Check the LCD for dust and install the new touch screen glass.
Now reassemble the phone.

Benq projector - Benq MS506 - MS3081 - MS504A – How to replace the projector lamp – How to reset lamp hour timers – Lamp information – Projector Repair and Service


Lamp information
Getting to know the lamp hour
When the projector is in operation, the duration (in hours) of lamp usage is automatically calculated by the built-in timer.
Total (equivalent) lamp hour = 2.5 x (hours used in Normal mode) + 1.67 x (hours used in Economic mode) + 1.54 x (hours used in SmartEco mode) + 1.00 x (hours used in
LampSave mode).
To obtain the lamp hour information:
1. Press MENU/EXIT and then press LEFT/RIGH to highlight the SYSTEM SETUP: Advanced menu.
2. Press DOWN to highlight Lamp Settings and press MODE/ENTER. The Lamp Settings page appears.
3. Select Lamp Timer to display lamp usage information.
4. To leave the menu, press MENU/EXIT.
You can also get the lamp hour information on the INFORMATION menu.
The LAMP indicator light and TEMPerature warning light will light up if the lamp becomes too hot. Turn the power off and let the projector cool for 45 minutes. If the Lamp or Temp indicator still lights up after turning the power back on.
Replacing the lamp
1.Turn the power off and disconnect the projector from the power outlet. If the lamp is hot, avoid burns by waiting for approximately 45 minutes until the lamp has cooled.
2. Loosen the screw(s) that secures the lamp cover on the side of the projector until the lamp cover loosens.
3. Open the lamp cover.
4. Remove the lamp cover from the projector.
# Do not turn the power on with the lamp cover removed.
# Do not insert your fingers between the lamp and the projector. The sharp edges inside the projector may cause injuries.

5. Disconnect the lamp connector from the projector as illustrated.
6. Loosen the screw that secures the lamp.
7. Lift the handle so that it stands up.
8. Use the handle to slowly pull the lamp out of the projector.
# Pulling it too quickly may cause the lamp to break and scatter broken glass in the projector.
# Do not place the lamp in locations where water might splash on it, children can reach it, or near flammable materials.
# Do not insert your hands into the projector after the lamp is removed. If you touch the optical components inside, it could cause color unevenness and distortion of the projected images.
9. As shown in the figure, lower the new lamp.
10. Tighten the screw that secures the lamp.
11. Ensure the handle is fully laid flat and locked in place.
12. Reconnect the lamp connector.
# Loose screw may cause a bad connection, which could result in malfunction.
# Do not over tighten the screw.
13. Replace the lamp cover on the projector.
14. Close the lamp cover.
15. Tighten the screw(s) that secures the lamp cover.
# Loose screw may cause a bad connection, which could result in malfunction.
# Do not over tighten the screw.
16. Connect the power and restart the projector. Do not turn the power on with the lamp cover removed.
Resetting the lamp timer
17. After the startup logo, open the On-Screen Display (OSD) menu. Go to the SYSTEM SETUP: Advanced > Lamp Settings menu. Press MODE/ENTER. The Lamp Settings page appears. Highlight Reset Lamp Timer. A warning message appears asking if you want to reset the lamp timer. Highlight Reset and press MODE/ENTER. The lamp time will be reset to “0”. Do not reset if the lamp is not new or replaced as this could cause damage.

Apple MacBook Air 13 – How to replace the Solid state Drive of apple MacBook – How to replace the Airport Card – Laptop repair and service

Category: Laptop Repair and Servcie 

Contents of this article 

  • How to remove the case 
  • How to replace the SSD
  • How to replace the airport/Bluetooth card 

Apple MacBook Air 13

AirPort Card Replacement
Before proceeding, close your computer and lay it on a soft surface top-side down. Remove the following ten screws: Two 9 mm 5-point Pentalobe screws
Eight 2.6 mm 5-point Pentalobe screws
The special screwdriver needed to remove the eight 5-point Pentalobe screws.
Wedge your fingers between the display and the lower case and pull upward to pop the lower case off the Air. Remove the lower case and set it aside.
For precautionary purposes, we advise that you disconnect the battery connector from the logic board to avoid any electrical discharge. This step is optional and is not required. Grab the clear plastic pull tab attached to the battery connector and pull it toward the front edge of the Air to disconnect the battery from the logic board. Do not lift upward on the connector as you disconnect it.
Use the flat end of a spudger to pry both antenna connectors up from their sockets on the AirPort/Bluetooth card.
Remove the single 2.9 mm T5 Torx screw securing the AirPort/Bluetooth card to the logic board.
Slightly lift the free end of the AirPort/Bluetooth board and pull it out of its socket on the logic board. Remove the AirPort/Bluetooth board from the Air.
Solid-State Drive Replacement
Remove the single 2.9 mm T5 Torx screw securing the SSD to the logic board.
Do not lift the end of the SSD excessively. Slightly lift up the end of the SSD and pull it straight out of its socket on the logic board.
When reinstalling the SSD, be sure it is properly seated before reinstalling its retaining screw.

HP Slate 7 Tablet – Disassembling procedure – How to remove the case – How to remove the battery – How to remove the Antenna – Tablets Repair and Service

Category: Tablets Repair and Servcie 

Contents of this article 

  • How to remove the cover
  • How to remove the battery 
  • How to remove the Antenna 

HP Slate 7 Tablet

DISASSEMBLING PROCEDURE 
How to remove the Tablet cover
Before removing the disassembling the tablet, follow these steps:
1. Turn off the tablet. If you are unsure whether the tablet is off or in Hibernation, turn the tablet on, and then shut it down through the operating system.
2. Disconnect the power from the tablet by unplugging the power cord from the tablet.
3. Disconnect all external devices from the tablet.
Remove the tablet cover:
1. Position the tablet with the display panel down and the right side toward you.
2. Carefully insert a thin plastic tool (1) between the tablet cover and the display panel assembly, separating the two components.
3. Continue to work the tool away from the top edge of the tablet until the bottom edge of the tablet cover (4) is completely separated from the display panel assembly.
4. Remove the tablet cover (5)
How to remove the Battery
Before removing the battery, follow these steps:
1. Turn off the tablet. If you are unsure whether the tablet is off or in Hibernation, turn the tablet on, and then shut it down through the operating system.
2. Disconnect the power from the tablet by unplugging the power cord from the tablet.
3. Disconnect all external devices from the tablet.
4. Remove the tablet cover (see Tablet cover on page 12).
Remove the battery:
1. Disconnect the battery cables (1) from the system board.
2. Insert a thin, plastic tool (2) between the left side of the battery and the display panel assembly and detach the battery from the display panel assembly. (The battery is attached to the display panel assembly with double-sided adhesive.)
3. Remove the battery (3).
How to remove the Front-facing webcamera
Before removing the front-facing webcamera, follow these steps:
1. Turn off the tablet. If you are unsure whether the tablet is off or in Hibernation, turn the tablet on, and then shut it down through the operating system.
2. Disconnect the power from the tablet by unplugging the power cord from the tablet.
3. Disconnect all external devices from the tablet.
4. Remove the tablet cover
5. Disconnect the battery cable from the system board
Remove the front-facing webcamera:
1. Release the zero insertion force (ZIF) connector (1) to which the front-facing webcamera cable is attached, and then disconnect the front-facing webcamera cable from the system board.
2. Remove the front-facing webcamera (2) and cable.
How to remove the Rear-facing webcamera
Before removing the rear-facing webcamera, follow these steps:
1. Turn off the tablet. If you are unsure whether the tablet is off or in Hibernation, turn the tablet on, and then shut it down through the operating system.
2. Disconnect the power from the tablet by unplugging the power cord from the tablet.
3. Disconnect all external devices from the tablet.
4. Remove the tablet cover
5. Disconnect the battery cable from the system board
Remove the rear-facing webcamera:
1. Release the ZIF connector (1) to which the rear-facing webcamera cable is attached, and then disconnect the rear-facing webcamera cable from the system board.
2. Remove the rear-facing webcamera (2) and cable.
How to remove the Antenna
Before removing the antenna, follow these steps:
1. Turn off the tablet. If you are unsure whether the tablet is off or in Hibernation, turn the tablet on, and then shut it down through the operating system.
2. Disconnect the power from the tablet by unplugging the power cord from the tablet.
3. Disconnect all external devices from the tablet.
4. Remove the tablet cover
5. Disconnect the battery cable from the system board
Remove the antenna:
1. Disconnect the wireless antenna cable (1) from the system board.
2. Insert a thin, plastic tool (2) under the left side of the wireless antenna transceiver and detach the transceiver (3) from the display panel assembly. (The wireless antenna transceiver is attached to the display panel assembly with double-sided adhesive.)
3. Disconnect the GPS antenna cable (1) from the system board.
4. Insert a thin, plastic tool (2) under the left side of the GPS antenna transceiver and detach the transceiver (3) from the display panel assembly. (The GPS antenna transceiver is attached to the display panel assembly with double-sided adhesive.)