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Compaq 4125D, 4130T, 4150T, 4140T, 4131T, 4200, 4125T, 4160T SLIMLINE, 4120, 4115 System Memory Map

Models: 4130T 4200 4115 4150 4131T 4125T 4160T 4140T 4150T 4110D 4120T 4160T SLIMLINE 4120 4125D

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6.12 System Memory Map

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6.12 System Memory Map

				Table 6-15

	Size	Memory Address		System Function

640	K	00000000 - 0009FFFF		Base Memory

128	K	000A0000 - 000BFFFF		Video Memory

48	K	000C0000 - 000CBFFF		Video BIOS

160	K	000C8000 - 000E7FFF		Unused

64	K	000E8000 - 000FFFFF		System BIOS

15	M	00100000	- 00FFFFFF	Extended Memory

58	M	01000000	- 047FFFFF	Super Extended Memory

58	M	04800000	- 07FFFFFF	Unused

2	M	08000000	- 080FFFFF	Video Memory (Direct Access)

4	G	08200000	- FFFEFFFF	Unused

64	K	FFFF0000 - FFFFFFFF		System BIOS ("SHADOW")

6-22 Specifications

Image 178

Compaq 4125D, 4130T, 4150T, 4140T, 4131T, 4200, 4125T, 4160T SLIMLINE, 4115, 4120T, 4110D manual System Memory Map

Contents

Compaq Armada 4100 and 4200 Families of Personal Computers Maintenance and Service GuideCompaq Computer Corporation Chapter ContentsProduct Description Chapter Removal and Replacement PreliminariesIllustrated Parts Chapter5.3.4 DualBay Battery Pack and Devices Chapter Removal and Replacement ProceduresChapter Specifications 5.5.3 Lithium Real Time Clock BatteryBattery Packs Appendix AAppendix B External Power SuppliesTechnician Notes SymbolsPreface PrefaceLaser Safety CDRH RegulationsCompaq Service Quick Reference Guide Locating Additional InformationQuick Setup Reference Guide Introducing Microsoft Windows Compaq Service Advisories and Bulletins Compaq QuickFindProduct Description 1.1 Computer Features and ModelsChapter 1.2 Models 4200 Family of Personal Computers1.3 Standard Features Compaq Armada 4100 Family of Personal Computers1-4 Product Description 1.3.3 Power Management 1.3.2 Security Features1.3.1 Software Fulfillment 1.4 Options 1.4.1 System Memory Options1.4.4 Mobile CD Expansion Unit 1.4.2 Display Options1.4.3 Secondary Cache 1.4.5 Convenience Base1.4.7 AC Adapter 1.4.9 Lithium Ion Battery Pack1.4.10 External Battery Charger 1.4.8 Automobile AdapterP50 Color P70 Color P110 Color P1610 Color TFT500 Flat Panel 1.4.13 Compaq Mouse1.4.14 Trackball Pointing Device The computer supports a PS/2 mouse or other external pointing device1.5 External Computer Components 1.5.1 Front and Left Side Components5 AC power connector 6 User programmable keys 1.5.2 Front and Right Side Components1 Pointing device 2 DualBay module 3 Speaker 4 DualBay eject button 1.5.3 Rear Components Figure 1-4. Rear Components1 DualBay 2 Pointing device 3 Memory compartment 4 Expansion slot 1.5.4 Bottom Components5 Hard drive compartment 1.5.5 Status Panel Lights 1 Power/Suspend 2 Battery charge 3 Caps Lock 4 Scroll Lock 5 Num Lock1.6 Mobile CD Expansion Unit Components 1 Stereo speakers 2 CD-ROM drive6 Unlocking lever 7 Expansion posts 1 Battery bay 2 MIDI/game device 3 AC adapter connector4 Convenience Base expansion connector 5 Computer expansion connector Figure 1-8. Right and Rear Components1.7 Convenience Base Connectors 1.8.1 System Unit 1.8 Design Overview - Computer1.8.2 System Board 1.8.5 System Memory 1.8.3 Processor Board1.8.4 Processor 1.8.6 Cache1.8.7 Local Bus Video Troubleshooting Chapter2.1 Preliminary Steps 2.2 Clearing the Power-On and Setup Passwords 2.3 Power-On Self Test POST 2.4 POST Error MessagesMessage Warning MessagesDescription page registers starting at location 80 Hex failed Fatal Error MessagesFatal Error Beep Codes bit 4 Refresh Detect failed to toggle within an2.5.1 Running Computer Setup 2.5 Compaq Utilities2.5.2 Running Computer Checkup TEST 2-8 TroubleshootingComputer Checkup Computer Checkup TEST Error Codes 2.5.3 View System Information INSPECT2.6 Diagnostic Error Codes Processor Test Error CodesKeyboard Test Error Codes Memory Test Error CodesParallel Printer Test Error Codes Diskette Drive Test 2.Check and/or replace the diskette power and signalHard drive conditional format test failed The following apply to error codes 501-xx through Video Test Error CodesThe following steps apply to error codes 320 × 200 graphics 256 color mode test The following applies to error codes 2458-xx throughECG/VGC monochrome graphics mode test Error Pointing Device Interface Test Error CodesCD-ROM Test Error Codes ErrorSolving Audio Problems 2.7 Troubleshooting Without Diagnostics2.7.1 Solving Minor Problems Solving Audio ProblemsSolving Battery and Battery Gauge Problems Solving Battery and Battery Gauge ProblemsRecharge the battery. Discharge the battery Battery charge does not lastRecharge the battery pack Set a power management level in ComputerSolving Diskette and Diskette Drive Problems Solving Diskette and Diskette Drive ProblemsSolving Hard Drive Problems Solving Hard Drive ProblemsSolving CD-ROM Drive Problems Solving CD-ROM Drive ProblemsSolving Hardware Installation Problems Solving Hardware Installation ProblemsSolving Infrared Connection Problems Solving Infrared Connection ProblemsSolving Keyboard/Numeric Keypad Problems Solving Keyboard/Numeric Keypad ProblemsSolving Pointing Device Problems Solving Pointing Device Problemserror occurs during operation Solving Memory ProblemsSolving Memory Problems the computer, or is defectiveSolving PC Card Problems Solving PC Card ProblemsTable 2-25 Continued ProblemSolutions Probable CauseSolving Power Problems Solving Power ProblemsSolving Screen Problems Solving Printer ProblemsSolving Printer Problems Solving Screen Problems Solving Software Application Problems Solving Software Application ProblemsDocking Problems and Solutions Solving Convenience Base ProblemsDisplay Problems and Solutions Undocking Problems and SolutionsKeyboard Problems and Solutions External Device Installation Problems and SolutionsMouse Problems and Solutions Solving Network Problems Solving Ethernet Network Problemsconnector on the Ethernet connected to the networkChapter Illustrated PartsIllustrated Parts 3.1 System Unit Figure 3-1. System UnitSystem Unit CPU cover Latin American Spanish258626-001 Figure 3-2. System Unit continued Illustrated Parts3.2 Mass Storage Devices Figure 3-3. Mass Storage DevicesMass Storage Devices 3.3 Cables and Power Cords Figure 3-4. CablesCables and Power Cords AC Power cord Australia/New Zealand3.4 Standard and Optional Boards Figure 3-5. Standard and Optional BoardsProcessor board, 120-MHz CPU with L2 Standard and Optional BoardsProcessor board, 100-MHz CPU with L2 Processor board, 133-MHz CPU with L23.5 Display Assembly Figure 3-6. Display Assembly11.3-inch CSTN display assembly Display Assembly10.4-inch CSTN display assembly 11.8-inch CTFT display assembly3.6 Options Figure 3-7. OptionsDescription OptionsSpares Part Number 3.8 Miscellaneous Parts Figure 3-8. Miscellaneous PartsTool kit includes connector removal tool Miscellaneous PartsScrew kit For 5 units. See table 3-8 for 3.8 Shipping Boxes Miscellaneous Screw Kit Contents and UseShipping Boxes Armada 4200 Family Quick Setup poster 3.9 DocumentationArmada 4100 Family Quick Setup poster DocumentationChapter Illustrated Parts4.1.1 Generating Static Removal and Replacement Preliminaries4.1 Electrostatic Discharge Typical Electrostatic Voltages4.1.3 Removing Batteries 4.1.2 Preventing Electrostatic Damage to Equipment4-2 Removal and Replacement Preliminaries 4.1.4 Preventing Damage to Drives 4.1.5 Grounding Methods4.1.6 Grounding Workstations 4.1.7 Grounding Equipment4.1.8 Recommended Materials and Equipment 4.3 Serial Number 4.2 Service Considerations4.2.2 Cables and Connectors 4.2.1 Tool Requirements5.1 Serial Number Removal and Replacement ProceduresChapter 5.2 Disassembly Sequence Chart Figure 5-2. Computer Disassembly Chart5.3 Preparing the Computer for Disassembly 5.3.1 Disconnecting the AC Power and External Diskette Drive Bay 5.3.2 Undocking the Computer Convenience BaseFigure 5-4. Disconnecting the Convenience Base from the Adapter 6. Grasp the MCD and the convenience base, then pull apartReverse the above procedure to dock the convenience base and the MCD Removal and Replacement ProceduresConvenience Adapter Base Figure 5-6. Undocking the Computer from the Adapter BaseMobile CD Expansion Unit 2. Turn the computer and MCD over, top side up Figure 5-8. Detaching the Computer from the MCD4. Close the expansion slot cover on the bottom of the computer Reverse the above procedures to attach the computer to the MCDRemoval and Replacement Procedures Figure 5-9. Closing the Expansion Slot Cover5.3.3 Battery Packs Figure 5-11. Inserting a Battery Pack into the Handle Removal and Replacement Procedures5.3.4 DualBay Battery Pack and Devices To install the DualBay device, complete the following steps 5.3.4 Pointing Devices Figure 5-14. Removing the Pointing Device TouchpadTo install the pointing device, complete the following steps 5.3.5 Hard Drive Figure 5-16. Removing the Hard Drive5.3.6 PC Card 5.4 External Computer Components 5.4.1 Computer Logo5.4.2 Computer Feet 5.4.3 Handle 4. Tighten the thumbscrews on the handle by turning them clockwise To remove the handle from the computer, follow these steps 4. Lift the handle and remove Removal and Replacement ProceduresFigure 5-23. Removing the Handle „ Lithium real time clock battery 5.5 CPU Base Assembly„ Memory cover „ Memory boards „ CPU base „ Processor board 5.5.1 Memory Cover Figure 5-24. Removing the Memory Cover5.5.2 Memory Boards Figure 5-25. Removing the Memory Board3. Pull the memory board out of the slot 5.5.3 Lithium Real Time Clock Battery 5.5.4 CPU Base Cover Figure 5-28. Removing the Four Screws from the CPU Base5-32 Removal and Replacement Procedures 8. Lift up the base cover slightly 2 to clear the frame10. Lift the base cover 2 from the magnesium frame 5.5.5 Processor Shield and Board Figure 5-31. Removing the Processor Board5.5.6 CPU Cover and Keyboard Assembly Figure 5-32 Removing the Screws from the Bottom of the CPU5-36 Removal and Replacement Procedures Figure 5-33. Removing the Screws Near the Memory Compartment OpeningFigure 5-34. Removing the CPU Cover and Keyboard Assembly 2. Screw 2 must be tightened next to firm up the keyboard location 5.6 Display Assembly Figure 5-39. Disconnecting the Ground Cable from the Magnesium Frame5-40 Removal and Replacement Procedures CAUTION Do not pull on the flat cable as it is easily damaged8. Remove the four clutch screws at the back of the display assembly To install the display assembly, complete the following procedures 5.7 Clutch Assembly Components 5.7.1 Clutch CoverReverse the procedure to install the clutch cover 5.7.2 Clutches Figure 5-44. Removing the Clutches5.8 System Board Components 5.8.1 System BoardFigure 5-45. Removing the Expansion Connector Nuts Removal and Replacement Procedures5-48 Removal and Replacement Procedures Figure 5-46. Removing the Screws from the System BoardFigure 5-47. Removing the Screwlocks from the System Board To replace the system board, complete the following procedures 5.8.2 Ensuring ESD Protection 5.8.3 Heatsink and Video Chip Heatpipe14. Remove the screw that secures the heatsink to the system board To install the heatsink, reverse the procedures15. Slide the heatsink out and away from the system board To install the video chip heatpipe 5.9 Frame Components 5.9.1 Upper PCMCIA DoorRemoval and Replacement Procedures Figure 5-51. Removing the Upper PCMCIA Door5-56 Removal and Replacement Procedures Figure 5-52. Replacing the Upper PCMCIA Door and Spring5.9.2 Lower PCMCIA Door 5-58 Removal and Replacement Procedures Removal and Replacement Procedures Figure 5-54. Replacing the lower PCMCIA Door and Spring5.9.3 DualBay Eject Assembly 5-60 Removal and Replacement Procedures13. Lift the eject button 1 out of the magnesium frame 5.9.5 PCMCIA Assembly 5-62 Removal and Replacement ProceduresRemoval and Replacement Procedures Figure 5-56. Removing the PCMCIA Retaining ScrewsTo reinstall the PCMCIA assembly, reverse the procedure Figure 5-57. Removing the PCMCIA Assembly from the System Board5.9.6 PCMCIA Ejector Buttons To install the PCMCIA ejector buttons, reverse the procedure 5.9.7 Display Ground Bracket 13. Unclip the display ground bracket from the magnesium frame To install the display ground bracket, reverse the procedureFigure 5-59. Removing the Display Ground Bracket Specifications Chapter6.1 Computer Computer12.1-Inch CSTN, SVGA Display 6.2 Displays12.1-Inch CTFT, SVGA Display Metric 11.8-Inch CTFT, SVGA Display11.3-Inch CSTN, SVGA Display Metric10.4-Inch CSTN, SVGA Display Metric3-GB Hard DrivesStandard Model Configurations 4-GB1.4 GB Standard Model ConfigurationsTable 6-7 Continued 1.6-GB630-MB Standard Model ConfigurationsTable 6-7 Continued 810-MB6.4 Diskette Drive 6.5 CD-ROM Drives 20X Max CD-ROM Drive8 X CD-ROM Drive Table 4X CD-ROM Drive Lithium Ion Modular Battery Pack 6.6 Battery PacksLithium Ion Handle Battery Pack 6.7 Mobile CD Expansion Unit MCD Expansion Unit6.8 External Power Supplies Automobile AdapterAC Adapter External Battery Charger Hardware IRQ 6.9 System InterruptsSystem Function 6.10 System DMA NOTE PC Card controller can use DMA 1, 2, orSystem Function Shipping Configuration 6.11 System I/O AddressI/O Address Hex Page 6.12 System Memory Map Table A-1 External Keyboard Connector Pin AssignmentsAppendix A Table A-2 PS/2-Compatible MouseExternal Monitor Table A-4Table A-6 Ethernet RJ-45Serial Table A-7 ParallelTable A-8 External Diskette Negative Drive DetectTable A-9 Expansion Connector Audio Signal from CD Drive - Left ChannelTable A-9 Continued Table A-11 Table A-10 Speaker ConnectorInside General Requirements Power Cord Set Requirements3-Conductor Power Cord Set Appendix B3-Conductor Power Cord Set Requirements - By Country Country-Specific RequirementsIndex Page Page recognizing devices, 2-7 running Computer Setup 2-7 software applications, 2-30 solving audio problems 2-17solving minor problems without diagnostics utilities, 2-7, 0-1, 6-1 Computer Checkup TEST 2-8