User manual ACER ALTOS EASYSTORE M2

[. . . ] The Pentium II CPU incorporates the first-level cache and boasts a new generation of power. The board comes with four DRAM banks composed of four 168-pin dual-inline memory module (DIMM) sockets that accommodate both fast-page mode and EDO (extended data output) DIMMs. [. . . ] Designed to work with Intel 440FX PCIset, the board includes the PCI bridge/memory controller (PMC) and the data bus accelerator (DBX) chipsets. The PMC provides bus control signals and address paths for transfers between the host bus, PCI bus, and the main memory. The DBX supports multiple-bit error detection and single-bit error correction through the ECC/parity feature. CPU Board 2-1 2. 1 Layout CPU Voltage Regulators DIMM Sockets Pentium II CPU Socket 1 Pentium II CPU Socket 2 Figure 2-1 CPU Board Layout 2. 2 Jumper Locations Figure 2-2 Pentium II CPU Board Jumper Locations 2-2 User's Guide 2. 3 Table 2-1 Jumper Settings Settings for CPU Core/Bus Frequency Ratio (JP1) JP1 Settings 1-2 1 1 1 1 1 3-4 1 1 1 1 0 5-6 1 0 1 0 0 1 - Pins Closed 7-8 1 1 0 0 1 CPU Core/Bus Freq. 2 3 4 2. 5 3. 5* 0 - Pins open Table 2-2 JP2 1-2 1 0 0 - Pins open ITP Debug Port (JP2) 2-3 0 1 1 - Pins closed ITP CPU 1* CPU 2 Table 2-3 JP5 1-2 1 0 0 - Pins open Clock Settings (JP5) CPU 2-3 0 1 1 - Pins closed Clock Speed 66 MHz* 60 MHz * Default setting CPU Board 2-3 2. 4 Memory Upgrade The system board comes with eight 168-pin sockets, labeled DIMM1 to DIMM4, that accommodate single-density and double-density DIMMs. The sockets support both the fast-page mode and EDO DIMMs for a total of 512-MB system memory using 128-MB DIMMs. Table 2-4 lists some possible memory configurations. 2. 4. 1 Table 2-4 DIMM1 32 MB 32 MB 32 MB 32 MB 32 MB 64 MB 64 MB 64 MB 64 MB 64 MB 128 MB 128 MB 128 MB 128 MB Memory Configurations Memory Configurations DIMM2 DIMM3 DIMM4 Total Memory 32 MB 32 MB 32 MB 32 MB 32 MB 64 MB 64 MB 64 MB 64 MB 128 MB 128 MB 128 MB 128 MB 128 MB 128 MB 64 MB 64 MB 128 MB 64 MB 128 MB 32 MB 32 MB 64 MB 32 MB 64 MB 64 MB 96 MB 128 MB 192 MB 64 MB 128 MB 192 MB 256 MB 384 MB 128 MB 256 MB 384 MB 512 MB The above configurations are only some of the available memory combinations. When upgrading memory, simply install DIMMs into any of the empty sockets. 2-4 User's Guide 2. 4. 2 Installing a DIMM To install a DIMM, align it with the socket and press it down until the holding clips secure the DIMM in place. The DIMM socket is slotted to ensure proper installation. See Figures 7 and 8 for the illustration of this step. CPU Board 2-9 Figure 2-7 Locking a Wide Clip End Figure 2-8 4. Locking a Narrow Clip End Repeat step 3 to lock the other clip. 2-10 User's Guide 2. 6 Installing a Pentium II Processor Follow these steps to install the Pentium II processor to the socket on the CPU board. Place the retention mechanism over the processor socket on the CPU board. Secure it with the screws that came with the package. Figure 2-9 2. Installing the Pentium II Retention Mechanism With the processor module golden fingers pointing downward, align the processor to the posts of the retention mechanism then lower it down. See Figure 2-10. The golden fingers of the Pentium II module is slotted such that it only fits in one direction. Make sure that module groove matches the one on the processor socket. CPU Board 2-11 3. Press down the processor module until the golden fingers completely fit into the socket. Figure 2-10 4. Installing a Pentium II Processor Press the latches on the sides to lock the processor module into place. Figure 2-11 Securing the Pentium II Processor 2-12 User's Guide 2. 7 Removing a Pentium II Processor Follow these steps to remove the Pentium II CPU module from the slot. Unlock the latches the secure that processor module. Figure 2-12 2. Unlocking the Module Latches Firmly hold the processor module and pull it out of the socket. Figure 2-13 Removing the Pentium II Processor CPU Board 2-13 2. 8 CPU Board Installation After setting the jumpers and installing memory modules and CPUs, install the CPU board into the CPU board slot on the system board. Follow these steps to install the CPU board: 1. [. . . ] Unlock the latches the secure that processor module. Figure 2-12 2. Unlocking the Module Latches Firmly hold the processor module and pull it out of the socket. Figure 2-13 Removing the Pentium II Processor CPU Board 2-13 2. 8 CPU Board Installation After setting the jumpers and installing memory modules and CPUs, install the CPU board into the CPU board slot on the system board. Follow these steps to install the CPU board: 1. [. . . ]