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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Step 3 ­Remove fan cover screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] The tray has tabs that hold it in place along the bottom, and also half way up along the sides. 4. Alignment Tabs Ribbon Cable Fig. 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. You have a choice of unplugging the cable or leaving it in. 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. It took a good bit of pushing and pulling to remove the tray. 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. These are shown in Figs, 7, 8 and 9. Fig. 8 are larger than the other four, so be sure to keep them separate. Once this is off you can take off the front "bezel". This is the plastic cover on the part of the tray that slides out. This is just held on with clips, so you can lever it off from either end. If you are replacing your drive with a new one, you can now attach the plastic support and bezel to the new tray, and follow the steps backwards. [. . . ] Once these have been pushed away the RAM module will pop up slightly and you will be able to slide it out. Fig. 18 The RAM module retaining clips are circled in Fig. The left pair are for the top module, and the right pair are for the bottom module. Step 5 ­ Inserting New RAM To install new RAM slide the contacts into the RAM slot, with the RAM angled slightly upwards. Press down until the retaining clips spring into place. [. . . ]