Dell™ PowerEdge™ 1750 Systems Service Manual System Overview Basic Troubleshooting Indicators, Codes, and Messages Removing and Replacing System Components Jumpers and Connectors Using the System Setup Program Notes, Notices, and Cautions NOTE: A NOTE indicates important information that helps you make better use of your computer. NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.
Back to Contents Page Basic Troubleshooting Dell™ PowerEdge™ 1750 Systems Service Manual Initial User Contact External Visual Inspection Observing the Boot Routine Internal Visual Inspection Running the System Diagnostics Performing basic troubleshooting procedures can often reveal the source of a system problem or indicate a starting point for servicing the system. Perform the following procedures in the order presented.
power supply. If the troubleshooting procedure indicates that the system power supply is working, troubleshoot the memory. See the Installation and Troubleshooting Guide. 3. Observe the power-supply indicators. If the fault indicator(s) is lit, troubleshoot the system power supply. See the Installation and Troubleshooting Guide. Internal Visual Inspection NOTICE: Before proceeding with the internal visual inspection, save all open files and exit all open applications, if possible.
Table 2-1 provides a brief explanation of testing options. Table 2-1. System Diagnostics Testing Options Testing Option Function Quick Tests Performs a quick check of the system. Select Test All Devices and then select Quick Tests. This option runs device tests that do not require user interaction and that run quickly. Use this option to quickly assess the source of your problem. Test One Device Tests a particular device. Extended Tests Performs a more thorough check of the system.
Back to Contents Page Indicators, Codes, and Messages Dell™ PowerEdge™ 1750 Systems Service Manual Indicators on the Optional Bezel System Beep Codes Front-Panel Features System Board LED Codes Back-Panel Features Warning Messages Power-Supply Features Diagnostics Messages System Messages Alert Messages The system, applications, and operating systems can identify problems and alert you to them.
Front-Panel Features Figure 3-2 shows the controls, indicators, and connectors located behind the optional bezel on the system's front panel. Table 3-2 provides a description of each feature. Figure 3-2. Front-Panel Features Table 3-2. Front-Panel LED Indicators, Buttons, and Connectors Indicator, Button, or Connector Icon Description Blue system status indicator The blue system status indicator lights up during normal system operation.
SCSI Hard-Drive Indicator Codes If the optional ROMB card is activated, two indicators on each of the hard-drive carriers provide information about the status of the hard drives. See Figure 3-3 and Table 3-3. The SCSI backplane firmware controls the drive power-on/fault indicator. Figure 3-3. SCSI Hard-Drive Indicators Table 3-3 lists the drive indicator patterns. Different patterns are displayed as drive events occur in the system. For example, if a hard drive fails, the "drive failed" pattern appears.
Power-Supply Features Each hot-pluggable power supply has three indicators, visible when the system covers are open, that indicate whether power is present or whether a power fault has occurred. See Figure 3-5 and Table 3-4 for more information about the indicators. See "System Covers" for information about accessing the inside of the system. Figure 3-5. Power-Supply Features Table 3-4.
Table 3-5. System Messages Message Causes Corrective Actions Address mark not found Faulty diskette/CD drive subsystem or hard-drive subsystem (defective system board). Replace the system board. See "System Board." Amount of available memory limited to 256 MB! OS Install Mode is enabled in the System Setup program. Disable the OS Install Mode. See "Using the System Setup Program." One or more of the installed DIMMs are not supported by the system.
Invalid memory configuration detected. Potential for data corruption exists! Memory modules are not installed in matched pairs. Install memory modules in matched pairs. See "Memory." Invalid NVRAM configuration, resource reallocated System configuration data has been ignored. Check the System Setup configuration settings. See "Using the System Setup Program." I/O card parity interrupt at address Expansion card(s) is improperly installed or faulty. Reinstall the expansion card(s).
Processor 1 internal error Defective microprocessor or system board (reported by the NMI handler). Replace the specified microprocessor. See "Microprocessors." If the problem persists, replace the system board. See "System Board." Two 533-MHz microprocessors are installed. This system supports only Intel® Xeon™ 400-MHz front-side-bus processors. Reboot the system. If you receive beep code 4-4-3 (processor frequency mismatch), replace both processors with Intel Xeon 400-MHz front-side-bus processors.
no utility partition exists on the boot hard drive. Warning: Detected mode change from SCSI to RAID Type of controller has changed since previous system boot. on channel x of the embedded RAID subsystem. "Using the Dell OpenManage Server Assistant CD" in your User's Guide. Back up information on the hard drives before changing the type of controller used with the drives. Warning: Detected missing RAID hardware for the embedded RAID subsystem.
2-1-1 through 2-4-4 Bit failure in the first 64 KB of main memory 3-1-1 Slave DMA-register failure 3-1-2 Master DMA-register failure 3-1-3 Master interrupt-mask register failure 3-1-4 Slave interrupt-mask register failure 3-2-4 Keyboard-controller test failure Check the keyboard cable and connector for proper connection. If the problem persists, replace the keyboard. If the problem persists, replace the system board. See "System Board." 3-3-1 CMOS failure Replace the system board.
A warning message alerts you to a possible problem and asks you to take corrective action before the system continues a task. For example, before you format a diskette, a message may warn you that you may lose all data on the diskette, as a way to protect against inadvertently erasing or writing over the data. These warning messages usually interrupt the procedure and require you to respond by typing y (yes) or n (no).
Back to Contents Page Jumpers and Connectors Dell™ PowerEdge™ 1750 Systems Service Manual Jumpers—A General Explanation System Board Jumpers System Board Connectors SCSI Backplane Board Connectors PCI Card Connectors This section provides specific information about the jumpers on the system board. It also provides some basic information on jumpers and switches and describes the connectors and sockets on the various boards in the system.
Table 5-1. System Board Jumper Settings Jumper Setting Description RSVD_FVS Reserved (do not change). PASSWD (default) The password feature is enabled. The password feature is disabled. NVRAM_CLR (default) The configuration settings are retained at system boot. The configuration settings are cleared at next system boot. (If the configuration settings become corrupted to the point where the system will not boot, install the jumper plug and boot the system.
PROCESSOR 2 Microprocessor socket 2 PS_PWR System board power connector PS_SIG Power supply signal connector RAID Socket for optional ROMB card RAID BAT Backup battery connector for ROMB card SCSI_B External SCSI connector SERIAL Serial port connector USBn USB connector VGA VGA connector SCSI Backplane Board Connectors Figure 5-4 shows the location of the connectors on the top of the SCSI backplane board. Figure 5-4.
Back to Contents Page System Overview Dell™ PowerEdge™ 1750 Systems Service Manual System Features Service Features Supported Operating Systems Software Features Power Protection Devices Other Documents You May Need Technical Specifications System Features The system offers the following features: l One or two Intel® Xeon™ microprocessors with an internal operating speed of at least 1.8 GHz for the 400-MHz processor and 2.
Supported Operating Systems l Microsoft® Windows® 2000 Server and Advanced Server l Microsoft Windows Server 2003 Standard Edition, Enterprise Edition, and Web Edition (when available) l Red Hat® Linux 8.0 and Red Hat Linux Advanced Server 2.1 l Novell® NetWare® 6.0 Software Features The following software is included with your system: l A System Setup program for quickly viewing and changing system configuration information.
Microprocessor Microprocessor type up to two Intel Xeon microprocessors with a minimum internal operating frequency of at least 1.8 GHz for the 400-MHz processor and 2.
Power Power supply: Wattage 320 W (AC) Voltage 100–240 VAC, 50/60 Hz, 3.9–2.0 A Heat dissipation 1026 BTU/hr maximum per power supply Maximum inrush current Under typical line conditions and over the entire system ambient operating range, the inrush current may reach 25 A per power supply for 10 ms or less. System battery 3.0-V lithium ion coin cell Physical Height 4.2 cm (1.67 inches) Width 44.7 cm (17.6 inches) Depth 68.3 cm (26.9 inches) Weight (maximum) 15.
Back to Contents Page Removing and Replacing System Components Dell™ PowerEdge™ 1750 Systems Service Manual Recommended Tools Removing and Replacing Power Supplies Optional Front Bezel Power Distribution Board System Covers System Battery Inside the System SCSI Backplane Board Expansion Cards System Board Memory Internal SCSI Hard Drives Microprocessors External SCSI Hard Drives ROMB Card Configuring the Boot Device Cooling Fans Installing an External SCSI Tape Drive Cooling Fan Bracket
Replacing the Bezel To replace the front bezel, fit the tabs on the bezel into the corresponding slots in the front panel and lock the keylock. System Covers Two covers on the top of the system provide access to the system board and other internal components. Opening the System Covers CAUTION: Only trained service technicians are authorized to open the system covers and access any of the components inside the system.
Inside the System In Figure 4-3, the system covers are open and the bezel is removed to provide an interior view of the system. Figure 4-3. Inside the System The system board can accommodate one or two microprocessors. The PCI riser board assembly accommodates up to two PCI expansion cards. Up to four memory modules may be installed on the system board. The hard-drive bays provide space for up to three 1-inch SCSI hard drives.
CAUTION: Before you perform the following procedure, you must turn off the system and disconnect it from its power source. See the System Information Guide for complete information about safety precautions, working inside the system, and protecting against electrostatic discharge. Installing an Expansion Card 1. Remove the optional front bezel, if present. See "Removing the Bezel." 2. Turn off the system, including any attached peripherals, and disconnect the system from its electrical outlet. 3.
6. Grasp the expansion card by its edges, and remove it from the expansion-card connector. 7. If you are removing the card permanently, install a metal filler bracket over the empty card-slot opening. NOTE: Installing a filler bracket over an empty expansion slot is necessary to maintain Federal Communications Commission (FCC) certification of the system. The brackets also keep dust and dirt out of the system and aid in proper cooling and airflow inside the system. 8.
Performing a Memory Module Upgrade To perform a memory module upgrade to the system board, perform the following steps. CAUTION: Only trained service technicians are authorized to open the system covers and access any of the components inside the system. See the System Information Guide for complete information about safety precautions, working inside the system, and protecting against electrostatic discharge. 1. Remove the optional front bezel, if present. See "Removing the Bezel." 2.
Figure 4-8. Removing Memory Modules Microprocessors Your system contains up to two Intel® Xeon™ 400- or 533-MHz front-side bus microprocessors. The 400-MHz front-side bus processors provide a minimum internal operating frequency of at least 2.0 GHz, with a front-side bus speed of 100 MHz, an address bus speed of 200 MHz (doubled address transfer rate), and a data bus speed of 400 MHz (quadrupled data transfer rate).
Figure 4-9. Retention Clip 5. Remove the heat sink. NOTICE: Be careful not to bend any of the pins when removing the microprocessor. Bending the pins can permanently damage the microprocessor. 6. Remove the microprocessor from the socket by pulling the socket release lever straight up until the processor is released, and then lift the processor out of the socket. See Figure 4-10.
NOTICE: Positioning the microprocessor incorrectly can permanently damage the processor and the system when you turn on the system. 7. Align the pin-1 corner of the microprocessor with the pin-1 corner of the microprocessor socket, which is also identified by a small triangle. See Figure 412. Figure 4-12. Installing the Microprocessor 8. Install the microprocessor in the socket. See Figure 4-12. a. If the release lever on the microprocessor socket is not all the way up, move it to that position now.
12. 13. Close the system covers. See "Closing the System Covers." Reconnect your system and peripherals to their electrical outlets, and turn them on. As the system boots, it detects the presence of the new microprocessor and automatically changes the system configuration information in the System Setup program. 14. 15. Press to enter the System Setup program, and check that the microprocessor categories match the new system configuration. See "Using the System Setup Program" for instructions.
7. Remove the ROMB backup battery. See Figure 4-14. a. Disconnect the ROMB backup battery from the backup battery connector (RAID BAT). b. While pressing the two standoff latches outward, pull the battery assembly up and out of the standoffs. 8. If you removed the SCSI backplane board in step 6, reinstall it now. See "Installing the SCSI Backplane Board." 9. Close the system covers. See "Closing the System Covers." 10. Reconnect the system and peripherals to their power sources, and turn them on.
The five system-board cooling fans and two power-supply cooling fans must be installed and operational at all times. See Figure 4-15. A blinking amber LED next to a fan power connector indicates a faulty fan that needs to be replaced. CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system.
Removing the Fan Bracket 1. Remove the optional front bezel, if present. See "Removing the Bezel." 2. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet. 3. Open the system covers. See "Opening the System Covers." 4. Locate the fan bracket. See Figure 4-16. Figure 4-16. Fan Bracket 5. Remove the fan bracket with the fans intact: a. For each fan mounted in the bracket, disconnect the fan power cable from the system board. b.
5. Remove the cooling fan that is located behind the control panel. See "Removing a Fan." The fan power cable attaches to the control panel flex cable assembly. 6. Loosen the thumbscrew that secures the flex cable assembly to the control panel board (PLANAR), and lift the flex cable assembly up out of its connector. See Figure 4-17. 7. Remove the hex-head Phillips screw that secures the control panel board to the chassis. See Figure 4-17. 8.
Installing a Power Supply 1. To install the replacement power supply, align the stud on the side of the power supply with the corresponding notch in the chassis wall, and then lower the power supply into the chassis. See Figure 4-18. 2. Slide the power supply toward the PDB until the power supply connector is fully seated in the PDB connector. 3. Close the system covers. See "Closing the System Covers.
6. Disconnect the output power cable from the PS_PWR connector on the system board. 7. Disconnect the power signal cable from the PS_SIG connector on the system board. 8. Disconnect both of the input power cables from the top of the PDB. 9. Lift the PDB out of the chassis. Installing a Power Distribution Board 1. Route the PDB's output power cable and power signal cable through the cutout in the side of the power-supply enclosure, and lower the PDB into the chassis. 2.
NOTICE: To avoid damage to the battery connector, you must firmly support the connector while installing or removing a battery. Installing the System Battery 1. Install the new system battery. See Figure 4-20. a. Support the battery connector by pressing down firmly on the positive side of the connector. b. Hold the battery with the "+" facing up, and slide it under the securing tabs at the positive side of the connector. c.
5. Disconnect the diskette-drive interface cable from the FLOPPY connector on the backplane board. See Figure 4-21. 6. Disconnect the CD drive interface cable from the CD_ROM connector on the backplane board. See Figure 4-21. 7. Press the release latch in toward the backplane board and use the handle to pull the board out of its connector and up out of the chassis. Installing the SCSI Backplane Board 1. Insert the SCSI backplane board into the chassis: a. b.
7. Remove all external peripheral cables from their connectors at the back of the system. 8. Remove any installed PCI expansion cards. See "Removing an Expansion Card." 9. Remove the PCI riser board assembly by pulling it straight up out of its connectors. 10. Remove the optional ROMB card and its backup battery, if they are installed. See "Removing a ROMB Card." 11. Remove the optional RAC, if one is installed. See Figure 5-3 for the location of the RAC connector ("EMBEDDED_REMOTE_ASSISTANT").
Internal SCSI Hard Drives The three internal hard-drive bays accommodate up to three 1-inch SCSI hard drives that connect directly to the SCSI backplane board. No drive cables are necessary. Before You Begin SCSI hard drives are supplied in special drive carriers that fit in the hard-drive bays.
If the drive has been online, the green power on/fault indicator will flash as the drive is powered down. When both drive indicators are off, the drive is ready for removal. 4. Open the hard-drive handle to release the drive. 5. Slide the hard drive out until it is free of the drive bay. 6. Replace the optional front bezel, if one was attached. See "Replacing the Bezel.
5. Install the controller card in an expansion slot. See "Installing an Expansion Card." 6. Connect the tape drive's interface/output power cable to the connector on the controller card supplied with the tape drive. 7. Close the system covers. See "Closing the System Covers." 8. Reconnect the system and peripherals to their electrical outlets, and turn them on. 9. Replace the optional front bezel, if applicable. See "Replacing the Bezel." 10.
7. Connect the other end of the ribbon cable to the diskette drive connector on the SCSI backplane. See Figure 5-4. 8. Close the system covers. See "Closing the System Covers." 9. Reconnect the system and peripherals to their electrical outlets and turn them on. 10. Replace the optional front bezel, if applicable. See "Replacing the Bezel." Installing a CD Drive The optional CD drive is installed in a carrier that slides into the peripheral bay.
7. Connect the CD drive data cable to the CD drive and to the CD drive connector on the SCSI backplane. See Figure 5-4. 8. Close the system covers. See "Closing the System Covers." 9. Reconnect the system and peripherals to their electrical outlets and turn them on. 10. Replace the optional front bezel, if applicable. See "Replacing the Bezel.
Back to Contents Page Using the System Setup Program Dell™ PowerEdge™ 1750 Systems Service Manual Entering the System Setup Program System Setup Options System and Setup Password Features Disabling a Forgotten Password After you set up your system, run the System Setup program to familiarize yourself with your system configuration and optional settings. Print the System Setup screens by pressing or record the information for future reference.
Table 6-2 lists the options and descriptions for the information fields that appear on the main System Setup program screen. NOTE: The System Setup program defaults are listed under their respective options, where applicable. Table 6-2. System Setup Program Options Option Description System Time Resets the time on the system's internal clock. System Date Resets the date on the system's internal calendar.
Asset Tag Displays the customer-programmable asset tag number for the system if an asset tag number has been assigned. Integrated Devices Screen Table 6-3 lists the options and descriptions for the information fields that appear on the Integrated Devices screen. Table 6-3. Integrated Devices Screen Options Option Description Embedded RAID Controller Selects between RAID, SCSI, or Off. The configurable options vary, depending on whether the optional ROMB is installed.
Password Status Setting the Setup Password option to Enabled prevents the system password from being changed or disabled at system start-up. To lock the system password, assign a setup password in the Setup Password option and then change the Password Status option to Locked. In this state, you cannot change the system password using the System Password option and cannot be disabled at system start up by pressing .
4. Press . 5. To confirm your password, type it a second time and press . The setting shown for the System Password changes to Enabled. Exit the System Setup program and begin using your system. 6. Either reboot your system now for your password protection to take effect or continue working. NOTE: Password protection does not take effect until you reboot the system.
After you verify the password, the Setup Password setting changes to Enabled. The next time you enter the System Setup program, the system prompts you for the setup password. A change to the Setup Password option becomes effective immediately (restarting the system is not required). Operating With a Setup Password Enabled If Setup Password is set to Enabled, you must enter the correct setup password before you can modify most of the System Setup options.
