User manual ACER ASPIRE M3621

[. . . ] 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. 2. 1-4 User's Guide 1. 4 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. Open the system according to the instructions in the housing installation manual. Follow the ESD precautions in section 1. 3 before handling a system component. [. . . ] It is capable of increasing the performance of 32-bit software and multimedia applications The Pentium II processor also supports the following features: · · · · · 64-bit Pentium Pro technology-based CPU running a 233 or 266 MHz MMX technology support for multimedia functions 32-KB internal cache size 256-/512-KB write-back second-level cache size Non-blocking architecture to prevent CPU stalls during cache, memory and I/O accesses 1-6 User's Guide 1. 5. 1 Installing a Pentium II Processor Observe the ESD precautions when installing or removing a system component. Follow these steps to install a Pentium II processor: 1. Place the retention mechanism over the CPU connector on the system board. Secure it with the screws that came with the package. Figure 1-2 2. Installing the Retention Mechanism Remove the Pentium II processor from its protective packaging. Make sure that the latches on the sides of the module are not pressed. With the processor card golden fingers pointing downward, align the processor to the posts of the retention mechanism. Lower the processor into to the CPU connector on the system board until the golden fingers touch the connector. 3. 4. System Board 1-7 5. Press down the processor until the golden fingers completely fit into the connector and the latches on the sides lock the processor into place. Figure 1-3 Installing a Pentium II Processor 1-8 User's Guide 1. 5. 2 Removing a Pentium II Processor Observe the ESD precautions when installing or removing a system component. Follow these steps to remove the Pentium II processor: 1. Press the latches on both sides of the processor to release it from the retention mechanism. You will hear a click sound once the latch is released. Pull the processor to totally detach it from the CPU connector. 2. Figure 1-4 Removing a Pentium II Processor System Board 1-9 1. 6 Jumpers and Connectors Figure 1-5 shows the jumper and connector locations. Figure 1-5 Jumper and Connector Locations The shaded pin indicates pin 1. 1-10 User's Guide Power LED Reset Turbo LED Figure 1-6 CN12 - Reset Sw. , Power LED, and Turbo LED connector locations The following tables list the jumper settings and their corresponding functions: Table 1-1 Switch SW1 Sw2 SW3 System Board Switch Settings Setting On Off On Off On Off 60 MHz 66 MHz* Bypass Password* Check Password OEM BIOS Acer BIOS* Function * Default setting System Board 1-11 Table 1-2 SW5 On Off On Off Core/Bus Pentium Clock Ratio SW6 On On Off On SW7 On On Off Off SW8 On On On On Core/Bus Pentium 2 4 (266 MHz CPU) 3. 5 (233 MHz CPU)* 4. 5 (300 MHz CPU) Table 1-3 Onboard Connectors Function USB Connector Keyboard and Mouse Connector Parallel Port Power Connector Serial Port (Com1 and Com2) Secondary IDE Connector Primary IDE Connector Standby Power Connector LAN Connector Multifunction Connector (see Figure 1-5) Power SW Connector Modem Ring Connector Floppy Connector HDD LED Connector IRDA Board Connector CPU Fan Connector (5 pin) CPU Fan Connector (3 pin) CPU Fan Connector (2 pin) Wake on LAN (WOL) Connector Connector CN1 CN2 CN5 CN6 CN7 CN8 CN9 CN10 CN11 CN12 CN13 CN14 CN15 CN16 CN17 FN1 FN2 FN3 CNx1 1-12 User's Guide 1. 7 Installing Memory The system memory is expandable to 384 MB by adding DIMMs (Dual In-line Memory Modules). See Figure 1-1 for the location of the DIMM sockets. There are two general types of error messages: · · Software System 1. 12. 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. 12. 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 1-5 lists the system error messages in alphabetical order. System Board 1-29 Table 1-5 System Error Messages Corrective Action Replace battery. Check and modify DRAM configuration to agree with Table 1-5. Check and connect the cable to the floppy drive or controller. If not, check the floppy drive and replace if necessary. Check and connect the cable to the hard disk drive or controller. Check the hard disk and replace if necessary. Check the hard disk and replace if necessary. [. . . ] Press or . Error Message Keyboard Interface Error Keyboard Locked Memory Error Memory Size Mismatch Serial 1 Conflict Serial 2 Conflict Parallel Port Conflict Pointing Device Error Pointing Device Interface Error Press F1 key to continue or Ctrl-Alt-Esc for Setup Press Esc to turn off NMI, any key to reboot Protected Mode Test Fail RAM BIOS Error Real Time Clock Error Shadow RAM Fail System Memory Address Error Press to disregard NMI error. Check DIMMs on system board or contact your dealer. 1. 12. 3 Correcting Error Conditions As a general rule, the "Press F1 to continue" error message is caused by a configuration problem which can be easily corrected. An equipment malfunction is more likely to cause a fatal error, i. e. , an error that causes complete system failure. System Board 1-31 Here are some corrective measures for error conditions: 1. You must know the correct configuration values for your system before you enter Setup, which is why you should write these values down when the system is correctly configured. [. . . ]