Acer M1640, M5640 manual Parameter Description Optio, Dimm/Pci Clk

Page 51

The following table describes the parameters found in this menu:

Parameter

Description

Optio

 

 

ns

Auto Detect

This option allows you to enable/disable the feature of

Enabled

DIMM/PCI CLK

auto detecting the clock frequency of the installed PCI

Disabled

 

bus.

 

 

 

 

Manufacturer

This item specifies CPU Manufacturer

Intel

 

 

 

CPU frequency

This item specifies CPU frequency

266MHz

 

 

 

Spread

When the motherboard’s clock generator pulses, the

Enabled

Spectrum

extreme values (spikes) of the pulses create EMI

 

 

(Electromagnetic Interference). The spread Spectrum

 

 

function reduces the EMI generated by modulating

 

 

the pulses so that the spikes of the pulses are reduced

 

 

to flatter curves. If you do not have any EMI problem,

 

 

leave the setting at Disabled for optimal system

 

 

stability and performance. But if you are plagued by

 

 

EMI, setting to Enabled for EMI reduction.

 

 

Remember to disable Spread Spectrum if you are

 

 

overlooking because even a slight jitter can introduce

 

 

a temporary boost in clock speed which may just

 

 

cause your over lock ed processor to lock up.

 

 

 

 

45

Image 51
Contents Aspire M5640 Aspire M3640 Aspire M1640 Service Guide Revision History Disclaimer CopyrightMessages ConventionsPreface Troubleshooting Jumper and Connector Information System Specifications FeaturesNV MCP73PV/S & NV MCP73VE HDD/CD-ROM/CD-RW/DVD-ROM/DVD-RW/DVD+ IDELAN Bios Power Supply Page Main board Placement Block Diagram Label Description Aspire M5640 Front PanelLabel Description Aspire M5640 Rear PanelAspire M3640 Front Panel Aspire M3640 Rear Panel Aspire M1640 Front Panel Aspire M1640 Rear Panel Hardware Specifications and Configurations FSBYES DDR2 Main Board Major ChipsSystem Memory NV MCP73PV/S &NV MCP73VESata X Audio InterfaceSata Interface ALC888SIRQ5 Floppy disk drive InterfaceParallel Port USB PortRCT Power ManagementEnvironmental Requirements PMESystem Utilities Entering Setup Parameter Description Product Information Standard Cmos Setup Options CPU Parameter Description OptionsAdvanced Setup A.R.T HDDAdvanced Chipset Setup SSE/SSE2 Integrated Peripherals Integrated Peripherals-IDE Function Setup IDE DMA IDEPIO UdmaSata Port Integrated Peripherals-Onboard Device SetupROM MAC LANIntegrated Peripherals -Onboard I/O Chip SetupEPP, EPP+ECP Power Management S3/STR S1/POSWOL Power onPower PWR/BTTNPCI/PnP Setup PCI 1/2 IRQ PCI/VGAPC Health Status CPU/SYSTEM FAN Frequency/Voltage ControlDIMM/PCI CLK Parameter Description OptioLoad Default Settings Set Supervisor/User Password Enter Password Save & Exit Setup Exit Without Saving Machine Disassembly and Replacement General Information Before You Begin Disassembly Procedure Aspire M3640 Aspire M5640 Remove CPU fan pipe Remove side cover ProcessRemove Cards Remove HDD Data Cables Remove ODD Data cable Remove HDD power cableRemove Cables Remove HDD Process Remove card reader Remove ODD power cableRemove FDD Cable Remove ODD PANEL1 Remove System FAN Remove mother board Remove memory Remove CPU coolerRemove I/O shielding Remove CPUTroubleshooting Chapter Page COM PsonCOM PWR OK 5VSB Page Page Page Pin Signal Name Page Page FRU Field Replaceable Unit List Description Exploded DiagramAM30-MAIN-BEZEL FAN AM10MAINBEZEL FAN
Related manuals
Manual 80 pages 1.8 Kb