Dell 180, 4100, 200 service manual Scsi Backplane Board Removal

Page 53

SCSI Backplane Board

hard-disk drive carrier

thumb screw

hook (10)

SCSI backplane board

Figure 4-10. SCSI Backplane Board Removal

To remove the SCSI backplane board, follow these steps:

1.Disconnect the hard-disk drive carrier connectors from the SCSI back- plane board by sliding each carrier toward the front of the computer approximately 1 inch.

2.Disconnect all cables from the SCSI backplane board.

3.Unscrew the thumb screw.

4.Disengage the board from the ten hooks holding the board to the com- puter chassis, and lift the board away from the computer.

An insulator (similar to the one for the power-supply paralleling board in Figure 4-12) is attached to the back of the SCSI backplane board with two adhesive strips.

Removing and Replacing Parts

4-11

Image 53
Contents Dell PowerEdge 4100/180 and 4100/200 Systems Page System Overview System FeaturesPage Computer Orientation Front-Panel Features Front/Left Internal View Back/Right Internal View I/O Panel Integrated Server Management System MemoryAdvanced Expansion Subsystem Video Controller Scsi Configuration GuidelinesIntegrated 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 18. System Board Components System Board LayoutMain Memory Interrupt Assignments Interrupt AssignmentsJumper Descriptions Dreq Line Assignments DMA Channel AssignmentsTechnical Specifications Technical SpecificationsSystem Clocks CD-ROM Power Technical Specifications Initial User Contact Basic TroubleshootingExternal Visual Inspection Observing the Boot Routine Internal Visual Inspection Eliminating Resource Conflicts Running the System DiagnosticsGetting Help Beep Codes Post Beep CodesBeep Codes System Error Messages System Error MessagesReal-time clock on Defective micro Wrong microprocessor Replace microprocessor Page Recommended Tools Removing and Replacing PartsComputer Covers Precautionary MeasuresKeylocks on Computer’s Back Panel Front Bezel Removal Front BezelDrive Hardware DrivesFront-Panel Insert Removal Front-Panel InsertsExternally Accessible Drives Removal Externally Accessible DrivesDrive-Mounting Rails Removal Hard-Disk Drive Carrier Removal Hard-Disk DrivesHard-Disk Drive Removal 10. Scsi Backplane Board Removal Scsi Backplane Board11. Power Supply Removal Power Supply12. Power-Supply Paralleling Board Removal Redundant Systems Power-Supply Paralleling Board13. Power Connector Panel Removal Nonredundant Systems Power Connector Panel14. Control Panel Removal Control Panel15. Cooling Fan Removal Cooling Fans16. System Board Components System Board Components17. Expansion Card Removal Expansion Cards18. Dimm Removal DIMMsMicroprocessor and Heat Sink 20. Microprocessor Configuration21. Microprocessor Securing Clip 23. Pin-1 Identification 24. System Battery Removal System Battery25. System Board Removal System BoardScreen Conventions System Setup ScreensTable A-1. Key Functions Key FunctionsMain Menu Screen Color CombinationsTable A-2. Main Menu Categories Post Boot Options SubmenuFigure A-3. Advanced Menu Advanced MenuTable A-4. Advanced Menu Categories Figure A-4. Security Menu Security MenuUser’s Guide Table A-5. Security Menu CategoriesFigure A-5. Exit Menu 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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