User manual ACER ASPIRE M1920

[. . . ] (MHz) AMD K5 CPU Type and Frequency Select (continued) S1 JP11 JP14 JP15 switch 4 S1 switch 5 CN23 CN36 PR90 PR100 PR120 PR133 PR166 AMD K6 2-3 2-3 2-3 2-3 2-3 2-3 2-3 2-3 1-3, 2-4 1-3, 2-4 1-3, 2-4 1-3, 2-4 1-3, 2-4 1-3, 2-4 1-3, 2-4 1-3, 2-4 1-3, 2-4 3-5, 4-6 1-3, 2-4 3-5, 4-6 3-5, 4-6 3-5, 4-6 3-5, 4-6 3-5, 4-6 Off Off Off Off On On On Off Off Off On On On On Off Off 1-3, 2-4 1-3, 2-4 1-3, 2-4 1-3, 2-4 1-3, 2-4 3-5, 4-6 3-5, 4-6 3-5, 4-6 9-10 9-10 9-10 9-10 9-10 5-6 5-6 5-6 PR166 PR200 PR233 1. 4. 3 Onboard Connectors Table 1-5 lists the onboard connectors. Table 1-5 Connector CN1 CN2 CN3 CN4 CN6 CN7 Onboard Connectors Function Ethernet connector PS/2 keyboard port PS/2 mouse port COM1 port COM2 port (USB port - optional) Printer port 1-8 User's Guide Table 1-5 Connector CN8 CN9 CN10 CN11 CN12 CN13 CN14 CN15 CN18 CN19 CN22 CN26 CN27 CN28 CN30 CN31 CN32 CN34 CN35 JPA1 2-4 7-8 Onboard Connectors (continued) Function Monitor port USB board connector Standby power connector Power connector Floppy disk drive connector IDE 2 connector IDE 1 connector AIO board connector CD-in connector Line-in connector Two-pin fan connector Modem ring-in connector AMC connector Auxiliary line-in connector (for add-on card) Power LED connector Message-in LED/HDD LED connector Power button connector External speakers connector Reset/Suspend switch connector Turbo LED connector Power button connector (for Aspire 6-pin connector System Board 1-9 1. 5 ESD Precautions Electrostatic discharge (ESD) can damage your processor, disk drives, expansion boards, and other components. Always observe the following precautions before you install a system component. 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. [. . . ] Pin 1 is labeled 1 on both of the DIMM and the socket. Gently push the DIMM until the holding clips lock the DIMM into a vertical position. 1 2 Figure 1-3 Installing a DIMM Be careful when inserting DIMMs. Forcing a DIMM in or out of a socket can damage the socket or the DIMM (or both). 1-12 User's Guide 1. 7. 2 Removing a DIMM To remove a DIMM: 1. Press the holding clips on both sides of the socket outward to release the DIMM. Gently pull the DIMM out of the socket. 2 1 Figure 1-4 Removing a DIMM 1. 7. 3 Reconfiguring the System The system automatically detects the amount of memory installed. Run Setup to view the new value for total system memory and make a note of it. System Board 1-13 1. 8 Second-level Cache The board may come with either 256-KB or 512-KB pipelined-burst second-level cache. Refer to the following table for the possible cache configurations. Table 1-7 Cache Size 256 KB 512 KB Second-level Cache Configurations Data RAM (12 ns) 32K x 32 x 2 pcs. Location U24, U25 U24, U25 Tag RAM (12 ns) 32K x 8 x 1 pc 32K x 8 x 1 pc Cacheable Memory 64 MB 64 MB 1. 9 1. 9. 1 Upgrading the CPU Removing the CPU In case you want to replace or upgrade your CPU, you need to remove the previously installed CPU first. Follow these steps to remove the CPU: 1. Locate the CPU socket with CPU mounted on the system board. The CPU pins will be automatically released from the socket holes. Refer to the software documentation for more details on the Hardware Monitor function. 1. 16 Wake-on Ring-in Function The Wake-on Ring-in function enables the system to resume from suspend mode by monitoring the fax/modem (or any device of similar type) activities. Any signal or activity detected from the Modem ring-in connector automatically returns the system to normal operation. Refer to Figure 1-2 for the location of the Modem ring-in connector on the system board. 1. 17 Wake-on LAN Function The system board comes with a 100Base-TX/10Base-T Ethernet controller with Wake-on LAN support. This special feature allows the system to be turned on via network. Common network functions, such as remote access, file sharing, etc. are also supported. System Board 1-23 1. 18 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. 18. 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. 18. 2 System Error Messages A system error message indicates a problem with the computer itself. [. . . ] Check DIMMs on system board or contact your dealer. 1-26 User's Guide 1. 18. 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. 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. [. . . ]