Lenovo NetVista Hardware Maintenance Manual (HMM) for NetVista 2251, 6830, and - Page 40
System board jumper settings, Clear CMOS/Flash Boot Block Recovery, Processor Speed Settings
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System board jumper settings The following table contains the jumper setting information. (D) indicates the default setting. Clear CMOS/Flash Boot Block Recovery Use the recovery jumper setting to Clear CMOS or to Flash Boot Block Recover. Jumper CMOS Reset Setting 2-3 1-2 (D) Description CMOS Reset/Flash Recovery Mode Normal Mode Note: The A40/A40P/A40i CMOS clear/recovery jumper pins are numbered as follows: v Pin 1 is the farthest from the battery. v Pins 2 and 3 are below pin 1, as seen in the System Board layout. Processor Speed Settings Processor speed for type 2251/6830/6831 computers are fixed and are determined by the processor. There are no settings required. System board memory The following matrix cross-references the name of the computer (printed on the logo) and the size, speed, and type of memory modules supported in the computer. Installing memory When installing DIMMs, the following rules apply: v Fill each system memory connector sequentially, starting at DIMM 0. v Use 3.3 V, 133 MHz, unbuffered, SDRAM non-parity DIMMs. v Use only 64, 128 or 256 MB DIMMs in any combination. 32 Hardware Maintenance Manual