User manual ACER ASPIRE M3640

[. . . ] Do not remove a component from its protective packaging until you are ready to install it. Wear a wrist grounding strap and attach it to a metal part of the system unit before handling components. If a wrist strap is not available, maintain contact with the system unit throughout any procedure requiring ESD protection. 1. 3 Pre-installation Instructions Always observe the following before you install a system component: 1. Turn off the system power and all the peripherals connected to the unit before opening it. [. . . ] Follow these steps to install a 3. 3V Intel Pentium CPU: 1. Insert the CPU, making sure that pin 1 (indicated by a notched corner) of the CPU connects to hole 1 of the socket. Pull down the socket lever to lock the CPU into the socket. Step 1 Step 2 Hole for Pin 1 Step 3 Notched corner Figure 1-3 Installing a 3. 3V Intel Pentium CPU 1-6 User's Guide 1. 4. 1 Installing an OverDriveTM CPU The OverDrive CPU comes with a heatsink already mounted. To maintain proper airflow around the CPU and heatsink, follow the required clearances in Table 1-1. Table 1-1 Clearances for OverDrive CPU and Heatsink Location Minimum Clearance 0. 4 inches 0. 2 inches Above the heatsink Sides of the CPU (at least 3 of 4) Follow these steps to install an OverDrive CPU: 1. Locate the CPU socket and pull up the socket lever. Remove the old CPU carefully from the socket and place it in an antistatic package. Take the upgrade CPU out of its antistatic package. Carefully insert the CPU into the socket such that pin 1 (indicated by a notched corner) of the CPU connects to hole 1 of the socket. System Board 1-7 Notched Corner Figure 1-4 5. Installing an Upgrade CPU Push down the socket lever to lock the CPU into the socket. 1. 5 Post-installation Instructions Observe the following after installing a system component: 1. See to it that the components are installed according to the stepby-step instructions in their respective sections. Make sure you have set all the required jumpers. See section 1. 6 for the correct jumper settings. The socket supports 256-KB pipeline-burst cache. To upgrade, simply insert the memory board into the cache socket. See 1. 5 for the postinstallation instructions. If the board does not have the cache upgrade socket, then the system cache is not upgradable. 1-16 User's Guide 1. 9 Error Messages In the event that you receive an error message, do not continue using the computer. Note the message and take corrective action immediately. This section describes the different types of error messages and suggests corrective measures. There are two general types of error messages: · · Software System 1. 9. 1 Software Error Messages Software error messages are returned by your operating system or application. These messages typically appear after you boot the operating system or when you run your applications. If you receive this type of message, consult your application or operating system manual for help. 1. 9. 2 System Error Messages A system error message indicates a problem with the computer itself. These messages normally appear during the power-on self-test, before the operating system prompt appears. Table 1-9 lists the system error messages in alphabetical order. System Board 1-17 Table 1-9 System Error Messages Corrective Action Replace battery. Check and connect the cable to the diskette drive or controller. [. . . ] Check the fixed disk and replace if necessary. Check the fixed disk and replace if necessary. Check and connect the keyboard to the system unit. Contact your dealer. Error Message Bad CMOS Battery CMOS Checksum Error Diskette Drive Controller Error Diskette Drive Error DRAM Configuration Error Equipment Configuration Error Fixed Disk Controller Error Fixed Disk 0 Error Fixed Disk 1 Error Fixed Disk 0 Extended Type Error Fixed Disk 1 Extended Type Error I/O Parity Error Keyboard Error or No Keyboard Connected Keyboard Interface Error 1-18 User's Guide Table 1-9 System Error Messages (continued) Error Message Corrective Action Unlock the keyboard. [. . . ]