Acer Extensa 390 Service Guide

xiList  of  Tables
1-1CPU Mounting Reference Table...........................................................................1-5
1-2SW1 Switch Settings...........................................................................................1-8
1-3Memory Address Map..........................................................................................1-9
1-4Interrupt Channel Map.........................................................................................1-9
1-5DMA Channel...

xii1-35Hard Disk Standby Mode Conditions and Descriptions........................................1-28
1-36Location of Drivers in the System Utility CD........................................................1-29
1-37Location of Applications in the System Utility CD................................................1-30
1-38Environmental Requirements..............................................................................1-33
1-39Mechanical...

C  h  a  p  t  e  r        1 C  h  a  p  t  e  r        1
System IntroductionSystem Introduction1-11.1 Overview
This computer combines high-performance, versatility, power management features and
multimedia capabilities with unique style and ergonomic design.  This computer was designed with
the user in mind.  Here are just a few of its many features:
· Performance
· Intel Pentium® processor with MMX™ technology
· 64-bit main memory and external (L2) cache memory
· Large LCD display and PCI local bus...

1-2Service Guide1.2 System Board Layout
1.2.1 MainboardFigure 1-1PCB No. 96183-1A Mainboard Layout (Top) 

System Introduction1-3Figure 1-2PCB No. 96183-1A Mainboard Layout (Bottom) 

1-4Service Guide1.2.2 CPU BoardFigure 1-3PCB No. 96534-SE CPU Board Layout (Top)Figure 1-4PCB No. 96534-SE CPU Board Layout (Bottom) 

System Introduction1-5 The following table is a reference when mounting1
 the CPU.
Table 1-1CPU Mounting Reference Table
Volt.Ext FreqRatioCPUVoltFreqR4R6R8R11R20R22R24R26RX14RY1RX6RX9RX11RX12UX2UX3P55C-133MHz2.5V133=66x2VXVXVXXVVXVXXXXXP55C-150MHz2.5V150=60x2.5VXVVXXVVVXVXXXXXP55C-166MHz2.5V166=66x2.5VXVXXXVVVXVXXXXXTLMK-200MHz1.8V200=66x3XXVXXVVXVXXVVVVVTLMK-233MHz1.8V233=66x3.5XXVXVVXXVXXVVVVVTLMK-266MHz2.0V266=66x4XVVXXXVVXVXVVVVV1.2.3 Audio BoardFigure 1-5PCB No. 97355-1 Audio Board
1.2.4 Battery...

1-6Service Guide1.2.5 Keyboard/Touchpad BoardFigure 1-7PCB No. 97349-1 Keyboard/Touchpad Board (Top View)Figure 1-8PCB No. 97349-1 Keyboard/Touchpad Board (Bottom View) 

System Introduction1-7 1.3 Jumpers and Connectors
TOP VIEW  CN1USB portCN14Audio board cable connector
CN2Parallel portCN15Internal speaker connector (right)
CN3Serial portCN16PCMCIA socket connector
CN4VGA portCN17FDD/CD-ROM connector
CN5Port replicator portCN18Internal keyboard/touchpad connector
CN6RJ-11 phone jackCN19HDD connector
CN7DC-DC connector CN20CD-ROM connector
CN8Inverter connector CN21CPU board connector
CN9LCD connectorCN22Battery connector
CN10Charger connectorGF1Golden finger for debug...

1-8Service GuideBOTTOM VIEWCN23 Modem connector
CN24 Modem connector
DIMMDIMM sockets
Figure 1-10Jumpers and Connectors (Bottom View)
The following tables list the switch settings for SW1.
Table 1-2SW1 Switch SettingsONOFFSwitch 1 (Logo Screen)OEMAcerSwitch 2 (Password)BypassCheckGermanyU.S.JapaneseSwitch 3 (KB Language)OnOffOffSwitch 4 (KB Language)OffOffOnCN24
CN23
DIMM