User manual ACER ASPIRE 1642 SERVICE MANUAL

[. . . ] 8 Cleaning the Cooling Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Step 1 ­ Undo 2 screws, and remove a third . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Step 2 ­ Remove Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Removing the battery isn't actually critical to any of the following steps, but it's always safer if there is no power through the machine when you are working on it. Step 2 ­ Remove top cover We need to remove 3 screws on the back of the laptop (Circled). 2 After removing the screws turn the laptop over and open up the screen until it is flat with the laptop. You can now lift up the top plastic cover which has the power and Acer buttons embedded in it. 3 Step 3 ­ Removing the Keyboard Now we need to remove the keyboard. After this it is a case of manipulating the keyboard tray until it come out. The tray has tabs that hold it in place along the bottom, and also half way up along the sides. 4 While you are removing the keyboard tray it will probably feel as if you are pulling against something holding it down. This will be the adhesive that is between the underside of the tray and the laptop body. Don't worry about the adhesive not re-sticking afterwards, the screws you have just removed do the job just fine. When the keyboard finally comes loose there is a ribbon cable attaching it to the laptop body, so make sure you don't pull it too hard and damage this cable. I left it plugged in, as you can easily turn the keyboard upside-down and rest it on the laptop body. If you need to replace the keyboard, now is the time to do it. Fig. 5 shows the laptop with the keyboard resting on it. Step 4 ­ Remove the CD/DVD tray retaining screw The retaining screw is circled in Fig. 5. This step is as simple as removing that screw. Step 5 ­ Sliding out the CD/DVD tray Sliding sounds quite easy, this in fact was quite secure on my laptop. The best way I found was to push towards the edge of the laptop through the hole shown in Fig. 6, while simultaneously getting my fingernails in behind the gap underneath the laptop, where the CD/DVD tray slots in. Fig. 6 Step 6 ­ Removing CD/DVD tray support So now you have the CD/DVD tray out you can either put in a new one, or repair the one you have. If you are putting in a new drive you will need to take off the black plastic that surrounds the CD/DVD tray, as this acts as the support. [. . . ] I found the best way to do this is to run a finger along under the edge of the cover. Once these are released it is quite easy to slip the cover out. Step 3 ­ Under the Cover In the laptop there will be either one or two RAM modules. 17 Step 4 ­ Removing the RAM To remove the RAM you need to push the two retaining clips away from the RAM module. [. . . ]