User manual ACER V35LAN

[. . . ] NEVER touch the heatsink with any metal or with your hands. System Board 1-3 1. 2 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. [. . . ] If you slip in a SIMM but would not completely fit, you may have inserted it the wrong way. Reverse the orientation of the SIMM. 2. Gently push the SIMM to a vertical position until the pegs of the socket slip into the holes on the SIMM, and the holding clips lock the SIMM into position. The SIMM should be at a 90° angle when installed. 1 2 Peg Pin 1 Indicator (curved edge) Hole Figure 1-5 Installing a SIMM 1-14 User's Guide See section 1. 11 for the post-installation instructions. 1. 6. 2 Removing a SIMM Follow these steps to remove a SIMM: 1. Press the holding clips on both sides of the SIMM outward to release it. Pull the SIMM out of the socket. Holding Clip 3 1 2 Figure 1-6 Removing a SIMM 1. 6. 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 1-15 1. 7 Second-level Cache The board may come without cache or with 256-KB or 512-KB pipelined-burst second-level cache. Refer to the following table for the possible cache configurations that your board might have. Table 1-9 Cache Size 256 KB 512 KB 512 KB Second-level Cache Configurations Data RAM (9 ns) 32K x 32 x 2 pcs 32K x 32 x 4 pcs 64K x 32 x 2 pcs Location U15, U22 or U14, U21 U14, U15, U21, U22 U15, U22 or U14, U21 Tag RAM (15 ns - U39) 32K x 8 x 1 pc 32K x 8 x 1 pc 32K x 8 x 1 pc Cacheable Memory 64 MB 64 MB 64 MB 1. 8 Video Function The onboard video controller and MPEG decoder enable the system to support video functions, as well as enhance the video display. An AMC feature connector is also incorporated in the board design for full hardware MPEG support. 1. 8. 1 Upgrading the VGA Memory Observe the ESD precautions when installing components. See section 1. 2. The 1-MB onboard VGA memory is upgradable to 2 MB. The additional memory allows your VGA to display higher resolutions and more colors when appropriate VGA driver is used. 1-16 User's Guide Follow these steps to upgrade the VGA RAM: 1. Locate the VGA memory expansion sockets on the system board. The sockets are marked U26 and U27 on the board. Gently but firmly insert a 514260 DRAM (256 Kb x 16, 60-ns SOJ) chip into each of the VGA memory expansion sockets. 1. 8. 2 Supported Video Resolutions The following table lists the video resolutions that the system supports: Table 1-10 Video Resolutions Refresh Rate 60 72 75 90 100 48 int. 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. 5 for the correct jumper settings. Replace any expansion boards or peripherals that you removed earlier. [. . . ] Remove the system cover according to the directions in the system housing installation guide. Check that the system board and any expansion boards are set correctly. If you cannot access a new disk, it may be because your disk is not physically formatted. [. . . ]