更换HOME键教程

Installing iPhone 4 Home Button Author: Walter Galan Tools used in this guide Phillips #00 Screwdriver (1) Plastic Opening Tools (1) Small Flathead Screwdriver (1) Spudger (1) Tweezers (1) iPhone 4 5-Point Pentalobe Screwdriver (1) (if iPhone has external pentalobe screws) iPhone SIM Card Eject Tool (1) Parts relevant to this guide IPhone 4 Home Button Assembly (1) Use this guide to replace a damaged home button to regain use of your iPhone. Installing iPhone 4 Home Button © iFixit — CC BY-NC-SA www.iFixit.com Page 1 of 16 Step 1 — Rear Panel Step 2 Before disassembling your iPhone, be sure it is powered off. Apple has recently substituted the two Phillips screws with 5-Point "Pentalobe" screws. If your iPhone 4 has 5-Point "Pentalobe" screws instead of Phillips, please refer to the second picture. Remove the two 3.6 mm Pentalobe screws next to the dock connector. During reassembly, we recommend you replace the 5-point screws with equivalent Phillips screws. Our Liberation Kit provides the tools and screws needed to replace the Pentalobe screws with Phillips screws. The 5-Point Screwdriver should only be used once, as it has the potential to strip the screws. Push the rear panel toward the top edge of the iPhone. The panel will move about 2 mm. Installing iPhone 4 Home Button © iFixit — CC BY-NC-SA www.iFixit.com Page 2 of 16 Step 3 Step 4 — Battery Step 5 Lift the rear panel away from the iPhone. Remove the single 2.5 mm Phillips screw securing the battery connector to the logic board. Use an iPod opening tool to carefully pry the battery connector up from the ends closest to the top and bottom edges of the iPhone. Do not pry against the contact clip. Remove the contact clip from the iPhone. Installing iPhone 4 Home Button © iFixit — CC BY-NC-SA www.iFixit.com Page 3 of 16 Step 6 Use the clear plastic pull tab to gently lift the battery out of the iPhone. Be careful when removing the battery with the plastic pull tab. On some units, Apple uses an excessive amount of glue, making it virtually impossible to remove the battery in this fashion (with the tab possibly tearing due to excessive force). For batteries that "stick", you could use the iPod opening tool to assist (take extra care whilst doing so). Remove the battery. Before reconnecting the battery connector, be sure the pressure contact (shown in red) is properly positioned next to the battery connector. Before reassembly, be sure to clean all metal-to-metal contact points on the pressure contact as well as its contact point on the rear panel with a de- greaser such as windex. The oils on your fingers have the potential to cause wireless interference issues. Installing iPhone 4 Home Button © iFixit — CC BY-NC-SA www.iFixit.com Page 4 of 16 Step 7 — Logic Board Step 8 Step 9 Use a SIM card eject tool or a paperclip to eject the SIM card and its holder. This may require a significant amount of force. Remove the SIM card and its holder. Remove the following two screws: One 1.2 mm Phillips One 1.6 mm Phillips Remove the thin steel dock connector cable cover from the iPhone. Before reassembly, be sure to clean all metal-to-metal contact points on the dock connector cable cover with a de-greaser such as windex. The oils on your fingers have the potential to cause wireless interference issues. Use an iPod opening tool to gently pry the dock cable connector up off the logic board from both short ends of the connector. Installing iPhone 4 Home Button © iFixit — CC BY-NC-SA www.iFixit.com Page 5 of 16 Step 10 Step 11 Step 12 Carefully peel the dock ribbon cable off the logic board and the lower speaker enclosure. Use an iPod opening tool to pry the lower antenna connector up off its socket on the logic board. Make sure you don't damage the blue inductor while prying the antenna connector. If you end up having no service message, double check that the blue inductor is still there and soldered properly Remove the 1.9 mm Phillips screw securing the bottom of the logic board to the inner case. Installing iPhone 4 Home Button © iFixit — CC BY-NC-SA www.iFixit.com Page 6 of 16 Step 13 Remove the following five screws securing the wi-fi antenna to to the logic board: One 2.3 mm Phillips Two 1.6 mm Phillips One 1.4 mm Phillips One 4.8 mm Phillips When re-assembling, start off with replacing the 4.8 mm Philips screw first, then the 2.3 mm. This is to ensure there is no mix-up, and avoid rendering the LCD and digitizer useless. Also make sure to put the long 4.8 mm Philips back in correctly when reassembling. This is the ground for the Wi-Fi antenna and is often the culprit if you are having bad wi-fi reception after reassembly. Installing iPhone 4 Home Button © iFixit — CC BY-NC-SA www.iFixit.com Page 7 of 16 Step 14 Step 15 Use an iPod opening tool to slightly lift the top edge of the wi-fi antenna away from the logic board. Use the tip of a spudger to pull the wi-fi retaining clips away from the inner frame. Remove the wi-fi antenna from the iPhone. Make sure you don't lose the metal clips on the top of the cover where the 4.8mm screw attaches or the 4.8mm screw. That's the primary reason for abnormal Wi-Fi performance after the reassembly. Before reassembly, be sure to clean all metal-to-metal contact points on the connector cover with a de- greaser such as Windex. The oils on your fingers have the potential to cause wireless interference issues. Do not clean the connectors themselves with Windex. Use an iPod opening tool to carefully lift the rear camera connector up off its socket on the logic board. Remove the rear camera. Installing iPhone 4 Home Button © iFixit — CC BY-NC-SA www.iFixit.com Page 8 of 16 Step 16 Step 17 Step 18 Remove the small circular white sticker (warranty sticker and water indicator) covering the screw near the battery pull tab. Remove the 2.4 mm Phillips screw that was hidden underneath the sticker. Disconnect the following connectors from the top of the logic board: Digitizer cable (From Bottom) LCD cable (From Bottom) Headphone jack/volume button cable (From Top) Top Microphone/sleep button cable (From Top) Front camera cable (From Top) It is helpful to use the edge of an iPod opening tool to gently lift the connectors up and out of their sockets on the logic board. Use a small flathead screwdriver to remove the 4.8 mm standoff near the headphone jack. Installing iPhone 4 Home Button © iFixit — CC BY-NC-SA www.iFixit.com Page 9 of 16 Step 19 Step 20 — Speaker Enclosure Assembly Carefully remove the logic board from the iPhone, minding any cables that may get caught. Note that there is a rubber guard on the edge of the logic board where the Digitizer and LCD ribbon cables bend over the logic board. Make certain it is there before replacing the logic board during reassembly. Remove the single 2.4 mm Phillips screw securing the speaker enclosure to the side of the inner frame. Installing iPhone 4 Home Button © iFixit — CC BY-NC-SA www.iFixit.com Page 10 of 16 Step 21 Step 22 — Display Assembly Remove the speaker enclosure from the iPhone. Before re-fastening the speaker enclosure to the inner frame, be sure the four small EMI fingers rest below the lip of the LCD frame. Before reassembly, be sure to clean all metal-to-metal contact points between the EMI fingers and the internal frame as well as the brass screw mounting point with a de-greaser such as Windex. The oils on your fingers have the potential to cause wireless interference issues. Remove the following two screws securing the vibrator to the inner frame: One 6 mm Phillips One 1.4 mm Phillips Remove the vibrator from the iPhone. Installing iPhone 4 Home Button © iFixit — CC BY-NC-SA www.iFixit.com Page 11 of 16 Step 23 Step 24 Step 25 Remove the 1.5 mm Phillips screw securing the front panel near the headphone jack. Remove the three large-headed 1.5 mm Phillips screws along the volume button side of the iPhone. Keep track of the washers under each of the screws. Tip: It can be tricky, but it is also possible to just loosen the large- headed 1.5 mm Phillips screws slightly, without having to remove and replace the screw-and-washer set. Remove the 1.5 mm Phillips screw near the lower microphone. Installing iPhone 4 Home Button © iFixit — CC BY-NC-SA www.iFixit.com Page 12 of 16 Step 26 Step 27 Remove the 1.5 mm Phillips screw near the dock connector ribbon cable. Remove the three large-headed 1.5 mm Phillips screws along the SIM card side of the iPhone. Keep track of the washers under each of the screws. Tip: It can be tricky, but it is also possible to just loosen the large- headed 1.5 mm Phillips screws slightly, without having to remove and replace the screw-and-washer set. Remove the small-headed 1.5 mm Phillips screw near the sleep button. Installing iPhone 4 Home Button © iFixit — CC BY-NC-SA www.iFixit.com Page 13 of 16 Step 28 Step 29 Carefully insert the edge of an iPod opening tool between the rubber bezel around the front glass panel and the steel inner frame. Do not attempt to insert the tool between the glass and the rubber bezel. Carefully pry the upper edge of the front panel assembly away from the steel inner frame. Slowly and gently lift the top edge of the front panel assembly away from the steel inner frame. Continue to rotate the front panel assembly away from the steel inner frame until it slowly begins to peel off the adhesive applied below the home button area. Carefully pull the lower edge of the front panel assembly away from the steel inner frame. Be careful, if the home button sticks to the front panel you may tear the home button cable. Installing iPhone 4 Home Button © iFixit — CC BY-NC-SA www.iFixit.com Page 14 of 16 Step 30 Step 31 — Home Button De-route the digitizer and LCD cables through the steel inner frame. Before re-fastening the front panel to the steel inner frame, be sure both the LCD and digitizer cables are not folded or pinched between the inner frame and the front panel assembly. This will result in possibly damaging the cables and not having enough slack when reconnecting them to the logic board. When the front panel has been correctly installed both the LCD and digitizer cables should be immediately next to one another and should be the same length and should be just hanging over the steel frame. When replacing the front panel assembly you must remember that you might have to reuse the earpiece grille and the clear plastic ring around the front facing camera from the old/damaged assembly. This will depend on where you buy the replacement part. Use the edge of an iPod opening tool or your fingernail to lift the home button ribbon cable retainer. Be sure you are prying up on the cable retainer, not the socket itself. Installing iPhone 4 Home Button © iFixit — CC BY-NC-SA www.iFixit.com Page 15 of 16 Step 32 Step 33 To reassemble your device, follow these instructions in reverse order. This document was last generated on Dec 14, 2011. Use a pair of tweezers to pull the home button ribbon cable out of its socket. Do not excessively strain the home button ribbon cable, as it is very thin and delicate. De-route the home button ribbon cable through the inner case and remove the home button from the iPhone. Installing iPhone 4 Home Button © iFixit — CC BY-NC-SA www.iFixit.com Page 16 of 16