Dell 180, 4100, 200 service manual Precautionary Measures, Computer Covers

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Precautionary Measures

Before you perform any of the procedures in this chapter, take a few moments to read the following warning for your personal safety and to prevent damage to the computer system from ESD.

WARNING FOR YOUR PERSONAL SAFETY AND PROTECTION OF THE EQUIPMENT: Only service technicians trained by Dell should perform the following procedures. Before you start to work on the com- puter, perform the following steps in the sequence listed.

1.Turn off the computer and any attached peripherals.

2.Disconnect the computer and any attached peripherals from their power sources to reduce the potential for personal injury.

3.Disconnect any communications cables.

4.Wear a wrist grounding strap, and clip it to an unpainted metal sur- face, such as a part of the back panel, on the computer chassis.

If a wrist grounding strap is not available, touch the fan guard or some other unpainted metal surface on the back of the computer to discharge any static charge from your body.

Computer Covers

screw (6)

Figure 4-1. Computer Covers Removal

4-2 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

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Contents Dell PowerEdge 4100/180 and 4100/200 Systems Page System Features System OverviewPage Computer Orientation Front-Panel Features Front/Left Internal View Back/Right Internal View I/O Panel Integrated Server Management System MemoryAdvanced Expansion Subsystem Scsi Configuration Guidelines Video ControllerIntegrated Scsi Controllers Scsi Hard-Disk DrivesScsi ID Numbers DC Voltage Ranges System Power SupplySystem Unit Power Supply Connectors DC Power Connector J11 P1 DC Power Connectors J12 P2, J13 P3, and J14 P4 Ddbp 12. Power-Supply Paralleling Board Connectors 13. DC Power Connector PWR1 15. DC Power Connector Pwrscsi Ddbp DC Power Distribution Redundant System System Board Layout 18. System Board ComponentsMain Memory Interrupt Assignments Interrupt AssignmentsJumper Descriptions DMA Channel Assignments Dreq Line AssignmentsTechnical Specifications Technical SpecificationsSystem Clocks CD-ROM Power Technical Specifications Basic Troubleshooting Initial User ContactExternal Visual Inspection Observing the Boot Routine Internal Visual Inspection Running the System Diagnostics Eliminating Resource ConflictsGetting Help Post Beep Codes Beep CodesBeep Codes System Error Messages System Error MessagesReal-time clock on Defective micro Wrong microprocessor Replace microprocessor Page Removing and Replacing Parts Recommended ToolsPrecautionary Measures Computer CoversKeylocks on Computer’s Back Panel Front Bezel Front Bezel RemovalDrives Drive HardwareFront-Panel Inserts Front-Panel Insert RemovalExternally Accessible Drives Externally Accessible Drives RemovalDrive-Mounting Rails Removal Hard-Disk Drives Hard-Disk Drive Carrier RemovalHard-Disk Drive Removal Scsi Backplane Board 10. Scsi Backplane Board RemovalPower Supply 11. Power Supply RemovalPower-Supply Paralleling Board 12. Power-Supply Paralleling Board Removal Redundant SystemsPower Connector Panel 13. Power Connector Panel Removal Nonredundant SystemsControl Panel 14. Control Panel RemovalCooling Fans 15. Cooling Fan RemovalSystem Board Components 16. System Board ComponentsExpansion Cards 17. Expansion Card RemovalDIMMs 18. Dimm Removal20. Microprocessor Configuration Microprocessor and Heat Sink21. Microprocessor Securing Clip 23. Pin-1 Identification System Battery 24. System Battery RemovalSystem Board 25. System Board RemovalSystem Setup Screens Screen ConventionsKey Functions Table A-1. Key FunctionsScreen Color Combinations Main MenuTable A-2. Main Menu Categories Boot Options Submenu PostAdvanced Menu Figure A-3. Advanced MenuTable A-4. Advanced Menu Categories Security Menu Figure A-4. Security MenuTable A-5. Security Menu Categories User’s GuideExit Menu Figure A-5. Exit MenuTable A-6. Exit Menu Categories Page Index Dreq line assignments Scsi Key functions, A-2main menu, A-3menus, A-1
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