Dell T7500 service manual Clearing Forgotten Passwords, Clearing Cmos Settings

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5 Password Jumper (PSWD)

6Hard Drive Fan Connector (FAN_HDD2)

7 Floppy Drive (DSKT)

8 Front Panel Connector (FRONTPANEL)

9Front Panel 1394 Connector (FP_1394)

10Chassis Intrusion Header (INTRUDER)

11 PCI-X Card Slot (SLOT7)

12PCI Express 2.0 x16 Card Slot, wired as x4 (SLOT6)

13 PCI Card Slot (SLOT5)

14PCI Express 2.0 x16 Card Slot (SLOT4)

15PCI Express 2.0 x16 Card Slot, wired as x8 (SLOT3)

16PCI Express 2.0 x16 Card Slot (SLOT2)

17PCI Express 2.0 x16 Card Slot, wired as x8 (SLOT1)

22 CPU Riser 1 (CPU_RSR1)

23 Primary Processor Connector (CPU1)

24 Power Connector (POWER_CPU1)

25 Front Fan Connector (FAN_FRONT)

26 Card Cage Fan (FAN_CCAG)

27 Memory Module Connectors (DIMM1-6)

28Optional Serial/PS2 Connector (SERIAL2)

29Auxiliary Hard-drive LED Connector (AUX_LED)

30 Battery Socket (BATTERY) 31 Internal Speaker Connector (INT_SPKR)

32 Flexbay USB (INT_USB)

33 RTC Reset Jumper (RTCRST)

WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance.

Clearing Forgotten Passwords

1.Remove the computer cover.

2.Locate the 4-pin password connector (PSWD) on the system board.

3.Remove the 2-pin jumper plug from pins 3 and 4 and set the jumper plug aside.

4.Replace the computer cover.

5.Connect your keyboard and mouse, then connect your computer and monitor to electrical outlets and turn them on.

6.After the operating system loads, turn the computer off.

Ensure that the computer is off and not in a power management mode. If you cannot shut down the computer using the operating system, press and hold the power button for 4 seconds.

NOTE: Ensure that the computer is off and not in a power management mode. If you cannot shut down the computer using the operating system, press and hold the power button for 6 seconds.

7.Disconnect the keyboard and mouse, then disconnect the computer and monitor from their electrical outlets.

8.Press the power button on the computer to ground the system board.

9.Remove the computer cover.

10.Replace the 2-pin jumper plug onto pins 3 and 4 of the password connector (RTCRST_PSWD) on the system board.

NOTE: The password jumper plug must be reinstalled on the password jumper pins in order to enable the password feature.

11. Connect your computer and devices to electrical outlets, and then turn them on.

NOTE: In System Setup, both system and administrator password options appear as Not Set. The password feature is enabled, but a password is not assigned.

Clearing CMOS Settings

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Contents Rev. A01 Before Working Inside Your Computer Working on Your ComputerAfter Working Inside Your Computer Turning Off Your ComputerWindows Vista Windows XP Click Start→ Turn Off Computer→ Turn OffAdding and Replacing Parts System Information ProcessorMemory VideoConnectors Expansion BusDrives Controls and Lights USBPower PhysicalEnvironmental 1985 Dell Diagnostics DiagnosticsPower Button Light Codes Option FunctionTab Function Pre-POST Diagnostic Light Patterns Diagnostic Light CodesPost Diagnostic Light Patterns Beep Codes Beep Description Code System Beep CodesAbout Memory Memory Subsystem Memory Population Rules Page About Your System Board System Board SchematicClearing Cmos Settings Clearing Forgotten PasswordsPage Boot Menu System SetupEntering System Setup Post KeystrokesSystem Setup Navigation Keystrokes Navigation KeystrokesAction Keystroke Removing the Cover CoverPage Page Removing the Battery BatteryRemove the coin-cell battery from the computer Page Removing the Hard Drives Hard DrivesPage Page Page Removing the Hard-drive Cage Hard-drive CagePage Repeat the process for the second hard-drive cage Page Removing the Front Fan Assembly Front Fan AssemblyPage Remove the fan assembly from the computer Page Removing the Memory Shroud Memory ShroudRemove the memory shroud from the computer Removing an Expansion Card Expansion CardsPage Page Removing the Processor Fan Processor FanPage Remove the chipset fan from the computer Page Removing the Dual Processor Riser Guide Dual Processor Riser GuidePage Page Page Removing the Power Supply Power SupplyPage Page Page Removing the Chassis Intrusion Switch Chassis Intrusion SwitchPage Page Page Removing the Hard-drive Bezel Hard-drive BezelPage Page Removing the Hard Drive Fan Hard Drive FanPage Page Removing the Optical Drive Optical DrivePage Page Page Removing the Rear Fan Rear FanPage Remove the fan from the computer Page Removing the Memory Modules MemoryPage Page Removing the Heat Sink and Processor Heat Sink and ProcessorPage Page Remove the processor from the computer Page Removing the Optional Dual Processor Riser Dual Processor Riser OptionalPage Page Page Page Page Page Page Page Removing the I/O Panel PanelDisconnect the data cable Disconnect the USB cable Page Page Removing the System Board System BoardPage Page Disconnect the floppy cable Disconnect the I/O panel cable Page Page Page Page Remove the system board from the chassis
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