Dell Precision DCD0 Service Manual

Dell Precision™ T7500 Service Manual Working on Your ComputerAdding and Replacing PartsSpecificationsDiagnosticsAbout MemoryAbout Your System BoardSys

DiagnosticsDell Precision™ T7500 Service Manual Dell Diagnostics Power Button Light Codes Diagnostic Light Codes Pre-POST Diagnostic Light Pattern

8. Disconnect the rear fan cable.9. Disconnect the front panel audio cable.

10. Disconnect the intrusion switch cable.11. Disconnect the 1394 cable.

12. Disconnect the floppy cable.13. Disconnect the I/O panel cable.

14. Disconnect the hard drive fan cable.15. Disconnect any hard drive data cables.

16. Disconnect the power supply cable.17. Disconnect the optical drive data cable.

18. Disconnect the power supply data cable.19. Remove the nine screws securing the system board.

20. Slide the system board toward the front of the computer.21. Lift the system board up at an angle towards the bottom of the computer.

22. Remove the system board from the chassis.

6. Select Run the 32 Bit Dell Diagnostics from the numbered list. If multiple versions are listed, select the versionappropriate for your computer. 7

the power supply is fine. Look at the diagnostic lights for further information.BlinkingGreenSystem is in a low power state, either S1 or S3. Look at

Pb61- Off2- Green3- Green4- Off- Reserved ReservedPb71- Off2- Blink3- Blink4- BlinkACPI S0,hand off toBIOS controlSystem on. BIOS not execution. This

S23- Solid4- OffCPU CPUfailure was detected.S31- Off2- Off3- Solid4- SolidMEM MemoryMemory subsystem configuration activity is in progress.Appropriate

System Beep CodesBeepCodeDescriptionBeepCodeDescription1-1-2 CPU register test in progress 2-4-3 1st 64 K RAM chip or data line failure - bit E1-1-3 C

About MemoryDell Precision™ T7500 Service Manual Memory Modules Supported Memory Configurations Memory Subsystem Memory Slots Memory Population R

Dual Processor Memory ConfigurationsSize(GB)DIMMRanksMBDIMM1MBDIMM2MBDIMM3MBDIMM4MBDIMM5MBDIMM6RiserDIMM1RiserDIMM2RiserDIMM3RiserDIMM4RiserDIMM5Riser

In addition, the dual-processor riser features six additional memory slots. The slots are numbered DIMM1 through DIMM6. DIMM1 isfurthest from the proc

NOTE: If any DIMMs are >30mm tall (possible early 16GB DIMMs), they must be installed on the system board only.

Working on Your ComputerDell Precision™ T7500 Service Manual Before Working Inside Your Computer Recommended Tools Turning Off Your Computer After

About Your System BoardDell Precision™ T7500 Service Manual System Board Schematic Clearing Forgotten Passwords Clearing CMOS Settings System Board

5 Password Jumper (PSWD) 22 CPU Riser 1 (CPU_RSR1)6Hard Drive Fan Connector(FAN_HDD2)23 Primary Processor Connector (CPU1)7 Floppy Drive (DSKT) 24 Pow

WARNING: Before working inside your computer, read the safety information that shipped with yourcomputer. For additional safety best practices informa

System SetupDell Precision™ T7500 Service Manual POST Keystrokes Boot Menu Entering System Setup System Setup Navigation Keystrokes POST Keystroke

The system setup screens display the current setup information and settings for your computer, such as:System configurationBoot orderBoot (start-up) c

CoverDell Precision™ T7500 Service ManualWARNING: Before working inside your computer, read the safety information that shipped with yourcomputer. For

3. Pull the cover away from the computer.4. Remove the cover from the computer.

BatteryDell Precision™ T7500 Service ManualWARNING: Before working inside your computer, read the safety information that shipped with yourcomputer. F

5. Remove the coin-cell battery from the computer.

Phillips screwdriverSmall plastic scribeFlash BIOS update program CD (see the Dell Support website at support.dell.com)Turning Off Your ComputerCAUTIO

Hard DrivesDell Precision™ T7500 Service ManualWARNING: Before working inside your computer, read the safety information that shipped with yourcompute

3. Disconnect the data cable and power cable from the first hard drive.4. Squeeze together the blue hard drive assembly release tabs and hold.

5. Remove the first hard drive assembly from the hard drive cage.6. Remove the first hard drive assembly from the computer, then repeat for any othe

Hard-drive CageDell Precision™ T7500 Service ManualWARNING: Before working inside your computer, read the safety information that shipped with yourcom

4. Remove the screws securing the first hard-drive cage to the chassis.5. Remove the first hard-drive cage.

6. Repeat the process for the second hard-drive cage.

Front Fan AssemblyDell Precision™ T7500 Service ManualWARNING: Before working inside your computer, read the safety information that shipped with your

Adding and Replacing PartsDell Precision™ T7500 Service Manual Cover Battery Hard Drive Hard-drive Cage Front Fan Assembly Memory Shroud Expans

5. Remove the two screws securing the front fan assembly.6. Rotate the fan assembly towards the center of the computer.

7. Remove the fan assembly from the computer.

Memory ShroudDell Precision™ T7500 Service ManualWARNING: Before working inside your computer, read the safety information that shipped with yourcompu

3. Remove the memory shroud from the computer.

Expansion CardsDell Precision™ T7500 Service ManualWARNING: Before working inside your computer, read the safety information that shipped with yourcom

3. Lift the expansion card retention clip away from the chassis.4. Pull back the expansion card retention clip and remove the expansion card.

Processor FanDell Precision™ T7500 Service ManualWARNING: Before working inside your computer, read the safety information that shipped with yourcompu

4. Disconnect the processor fan cable from the system board.5. Release the metal retention clip from the system board on one end.

SpecificationsDell Precision™ T7500/T7500n Service Manual Processors System Information Memory Video Audio Expansion Bus Drives Connectors Co

6. Remove the chipset fan from the computer.

Dual Processor Riser GuideDell Precision™ T7500 Service ManualWARNING: Before working inside your computer, read the safety information that shipped w

3. Use a long phillips head screw driver to remove the first screw located towards the center of the computer.4. Remove the second screw using the p

5. Remove the last screw that securies the riser guide to the computer.6. Remove the riser guide from the computer.

Power SupplyDell Precision™ T7500 Service ManualWARNING: Before working inside your computer, read the safety information that shipped with yourcomput

3. Disconnect the power supply cable from the back of the power supply.4. Remove the four screws that secure the power supply to the computer.

5. Slide the power supply toward the inside of the computer.6. Remove the power supply from the computer at an angle.

Expansion Bus Bus type PCI Express 2.0PCI 2.3PCI-X 2.0ASATA 1.0 and 2.0eSATA 2.0SASUSB 2.0Bus speed 133 MB/s (PCI)x1-slot bidirectional speed - 500 MB

Chassis Intrusion SwitchDell Precision™ T7500 Service ManualWARNING: Before working inside your computer, read the safety information that shipped wit

3. Disconnect the intrusion switch cable from the system board.4. Remove the intrusion switch cable from the retaining clip.

5. Slide the intrusion switch toward the center of the computer.6. Remove the intrusion switch from the computer.

Hard-drive BezelDell Precision™ T7500 Service ManualWARNING: Before working inside your computer, read the safety information that shipped with yourco

3. Press the sliding-plate lever toward the base of the computer and release the drive bezel.4. Remove the drive bezel.

Hard Drive FanDell Precision™ T7500 Service ManualWARNING: Before working inside your computer, read the safety information that shipped with yourcomp

4. Disconnect the sata cable to allow the hard drive fan to slide out.5. Depress the fan release tab and slide the hard drive fan down toward the sy

Network adapter RJ-45 connector USB USB 2.0 compliantTwo internal connectorsTwo in the frontSix in the back Serial One 9-pin connector; 16550C-com

Optical DriveDell Precision™ T7500 Service ManualWARNING: Before working inside your computer, read the safety information that shipped with yourcompu

3. Disconnect the data cable and power cable from the back of the optical drive.4. Press down on the sliding-plate lever and hold.

5. Slide the optical drive out of the front of the chassis, and remove the optical drive from the computer.

5.

Rear FanDell Precision™ T7500 Service ManualWARNING: Before working inside your computer, read the safety information that shipped with yourcomputer.

3. Disconnect the rear memory fan cable from the system board.4. From the outside of the computer, pull each of the four black rubber holders to rel

5. Remove the fan from the computer.

MemoryDell Precision™ T7500 Service ManualWARNING: Before working inside your computer, read the safety information that shipped with yourcomputer. Fo

4. Press out on the securing clips at each end of the memory module connector.5. Lift the memory module straight up and remove from the computer.

state; solid green for power-on state Drive activity light Green light — A blinking green lightindicates the computer is reading datafrom or writing

Heat Sink and ProcessorDell Precision™ T7500 Service ManualWARNING: Before working inside your computer, read the safety information that shipped with

4. Loosen the four captive screws on the heat sink.5. Remove the heat sink from the computer.

6. Press down and out on the processor holder arm to release it.7. Lift the processor cover.

8. Remove the processor from the computer.

Dual Processor Riser (Optional)Dell Precision™ T7500 Service ManualWARNING: Before working inside your computer, read the safety information that ship

4. Carefully slide the dual processor riser halfway out.5. Disconnect the power cable from the dual processor board.

6. Remove the dual processor riser completely from the computer chassis.View of computer after dual processor removal.

7. Disconnect the dual processor fan cable from the dual processor board.8. While pressing on the blue release tab, remove the dual processor fan as

Operating -15.2 to 3048 m (-50 to 10,000 ft) Storage -15.2 to 10,668 m (-50 to 35,000 ft)Airborne contaminant level G2 or lower as defined by ISA-S

9. Gently press down on the memory module release tabs to release the first dual processor memory module from theconnector.12. Remove the first memo

13. Disconnect the dual processor heat sink fan cable from the dual processor board.14. Loosen the four captive screws on the dual processor heat si

15. Remove the dual processor heat sink fan assembly from the dual processor board.16. Release the dual processor cover by pressing down and out on

17. Open the dual processor cover.18. Remove the dual processor from the dual processor board.

I/O PanelDell Precision™ T7500 Service ManualWARNING: Before working inside your computer, read the safety information that shipped with yourcomputer.

5. Disconnect the data cable.6. Disconnect the USB cable.

7. Remove the screws securing the I/O panel to the computer chassis.8. Remove the I/O panel from the computer.

System BoardDell Precision™ T7500 Service ManualWARNING: Before working inside your computer, read the safety information that shipped with yourcomput