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puters when a SCSI host adapter card is as shown in Figure 1-1. 1-2 Dell WorkStation 400 Systems Service Manual When following new and/or advanced features: • Dual-processor capability. • Advanced combination ISA and PCI expansion subsystem. • Plug and Play capability. • ...
puters when a SCSI host adapter card is as shown in Figure 1-1. 1-2 Dell WorkStation 400 Systems Service Manual When following new and/or advanced features: • Dual-processor capability. • Advanced combination ISA and PCI expansion subsystem. • Plug and Play capability. • ...
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power button power indicator reset button hard-disk drive access indicator Midsize Computer diskette-drive access indicator diskette-drive access indicator power button reset button power indicator hard-disk drive access indicator Mini Tower Computer Figure 1-2. Front-Panel Features 1-4 Dell WorkStation 400 Systems Service Manual
power button power indicator reset button hard-disk drive access indicator Midsize Computer diskette-drive access indicator diskette-drive access indicator power button reset button power indicator hard-disk drive access indicator Mini Tower Computer Figure 1-2. Front-Panel Features 1-4 Dell WorkStation 400 Systems Service Manual
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... (called legacy cards), Plug and Play ISA expansion cards, and PCI expansion cards. Advanced Expansion Subsystem The Dell WorkStation 400 systems offer advanced expansion subsystems that might arise from such an arrangement. 1-6 Dell WorkStation 400 Systems Service Manual power supply AC power receptacle security cable slot parallel port connector serial port 1 connector keyboard connector mouse connector...
... (called legacy cards), Plug and Play ISA expansion cards, and PCI expansion cards. Advanced Expansion Subsystem The Dell WorkStation 400 systems offer advanced expansion subsystems that might arise from such an arrangement. 1-6 Dell WorkStation 400 Systems Service Manual power supply AC power receptacle security cable slot parallel port connector serial port 1 connector keyboard connector mouse connector...
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....3-MHz PCI local bus rather than to the 8.33-MHz ISA-compatible system bus, communication between the video subsystem and the microprocessor is much faster. 1-8 Dell WorkStation 400 Systems Service Manual
....3-MHz PCI local bus rather than to the 8.33-MHz ISA-compatible system bus, communication between the video subsystem and the microprocessor is much faster. 1-8 Dell WorkStation 400 Systems Service Manual
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... operate from an AC power source of 115 VAC at 60 Hz or 230 VAC at the back (wire side) of the connectors. 1-10 Dell WorkStation 400 Systems Service Manual The system power supply provides the DC operating voltages and currents listed in Table 1-1. Figures 1-6, 1-7, and 1-8 show the wire side of the connectors without...
... operate from an AC power source of 115 VAC at 60 Hz or 230 VAC at the back (wire side) of the connectors. 1-10 Dell WorkStation 400 Systems Service Manual The system power supply provides the DC operating voltages and currents listed in Table 1-1. Figures 1-6, 1-7, and 1-8 show the wire side of the connectors without...
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P7 1 2 34 5 6 +3.3 VDC (blue/white) +3.3 VDC (blue/white) +3.3 VDC (blue/white) common (black) common (black) common (black) Figure 1-8. DC Power Cables 1-12 Dell WorkStation 400 Systems Service Manual DC Power Connector P7 DC Power Distribution Figures 1-9 and 1-10 provide the following information about DC power distribution: • Power-supply connector identification • Power cable connections for diskette, tape, CD-ROM, and hard-disk drives • Power distribution to sockets and connectors on the system board P1 P6 P4 P5 P7 P9 P3 P2 Figure 1-9.
P7 1 2 34 5 6 +3.3 VDC (blue/white) +3.3 VDC (blue/white) +3.3 VDC (blue/white) common (black) common (black) common (black) Figure 1-8. DC Power Cables 1-12 Dell WorkStation 400 Systems Service Manual DC Power Connector P7 DC Power Distribution Figures 1-9 and 1-10 provide the following information about DC power distribution: • Power-supply connector identification • Power cable connections for diskette, tape, CD-ROM, and hard-disk drives • Power distribution to sockets and connectors on the system board P1 P6 P4 P5 P7 P9 P3 P2 Figure 1-9.
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... of 16-, 32-, 64-, and 128-MB DIMMs up to contain DIMMs of the same size. DIMMs may be left between installed DIMMs. Dell recommends populating the sockets in order from A to D. • DIMM sockets do not have to a total memory capacity of computer diskette/tape... line-out jack line-in any order. System Board Components Main Memory The four DIMM sockets on removing and replacing DIMMs. 1-14 Dell WorkStation 400 Systems Service Manual System Board The subsections that provide ECC functionality when used in Chapter 4 or Chapter 5 for information on the system board can be...
... of 16-, 32-, 64-, and 128-MB DIMMs up to contain DIMMs of the same size. DIMMs may be left between installed DIMMs. Dell recommends populating the sockets in order from A to D. • DIMM sockets do not have to a total memory capacity of computer diskette/tape... line-out jack line-in any order. System Board Components Main Memory The four DIMM sockets on removing and replacing DIMMs. 1-14 Dell WorkStation 400 Systems Service Manual System Board The subsections that provide ECC functionality when used in Chapter 4 or Chapter 5 for information on the system board can be...
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Installed if the microprocessor's internal speed is 266 MHz. Not installed (reserved, do not change ). Installed (password features enabled). 1-16 Dell WorkStation 400 Systems Service Manual Not installed (reserved, do not change ). Reserved. Jumper Descriptions Description Default Setting Chassis identification. Microprocessor speed. Not installed (reserved, do not change ). Installed if the ...
Installed if the microprocessor's internal speed is 266 MHz. Not installed (reserved, do not change ). Installed (password features enabled). 1-16 Dell WorkStation 400 Systems Service Manual Not installed (reserved, do not change ). Reserved. Jumper Descriptions Description Default Setting Chassis identification. Microprocessor speed. Not installed (reserved, do not change ). Installed if the ...
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DREQ Line Assignments DREQ Line Used By/Available DREQ0 Available DREQ1 Available DREQ2 Generated by super I/O controller to initiate DMA cycle for attached diskette drive DREQ3 Available DREQ4 Generated by bus controller chip to activate second DMA controller DREQ5 Available DREQ6 Available DREQ7 Available NOTE: The integrated audio controller is assigned one or two DMA channels automatically during system start-up. 1-18 Dell WorkStation 400 Systems Service Manual DMA Channel Assignments Table 1-4.
DREQ Line Assignments DREQ Line Used By/Available DREQ0 Available DREQ1 Available DREQ2 Generated by super I/O controller to initiate DMA cycle for attached diskette drive DREQ3 Available DREQ4 Generated by bus controller chip to activate second DMA controller DREQ5 Available DREQ6 Available DREQ7 Available NOTE: The integrated audio controller is assigned one or two DMA channels automatically during system start-up. 1-18 Dell WorkStation 400 Systems Service Manual DMA Channel Assignments Table 1-4.
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... for half-height diskette drives, tape drives, or CD-ROM drives Mini tower computer. . . . . . two 5.25-inch bays for a third SCSI hard-disk drive 1-20 Dell WorkStation 400 Systems Service Manual
... for half-height diskette drives, tape drives, or CD-ROM drives Mini tower computer. . . . . . two 5.25-inch bays for a third SCSI hard-disk drive 1-20 Dell WorkStation 400 Systems Service Manual
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... lb) Mini tower computer: Height 44.4 cm (17.5 inches) Width 20.6 cm (8.1 inches) Depth 43.7 cm (17.2 inches) Weight (minimum 14.3 kg (33 lb) 1-22 Dell WorkStation 400 Systems Service Manual
... lb) Mini tower computer: Height 44.4 cm (17.5 inches) Width 20.6 cm (8.1 inches) Depth 43.7 cm (17.2 inches) Weight (minimum 14.3 kg (33 lb) 1-22 Dell WorkStation 400 Systems Service Manual
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... these steps: 1. For a PS/2-compatible mouse, the keyboard and mouse interface cable connectors are sticking, it may be secure enough to replace the keyboard. 2-2 Dell WorkStation 400 Systems Service Manual The captive screws that the keyboard and mouse interface cables are sticking. For proper settings of the monitor controls, see the documentation for any...
... these steps: 1. For a PS/2-compatible mouse, the keyboard and mouse interface cable connectors are sticking, it may be secure enough to replace the keyboard. 2-2 Dell WorkStation 400 Systems Service Manual The captive screws that the keyboard and mouse interface cables are sticking. For proper settings of the monitor controls, see the documentation for any...
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... sources. 2. Does the Diagnostics Menu appear? Turn off the system, including any of these steps: 1. See "Running the Dell Diagnostics" found later in response to data being transferred to light up in this chapter. If either of the following: •...system emits a beep code, see Table 3-2. 5. Proceed to the next section, "Internal Visual Inspection." Remove the computer cover. 2-4 Dell WorkStation 400 Systems Service Manual Internal Visual Inspection CAUTION: Before you perform the visual inspection, refer to "System Features" in Chapter 1 to the source of a ...
... sources. 2. Does the Diagnostics Menu appear? Turn off the system, including any of these steps: 1. See "Running the Dell Diagnostics" found later in response to data being transferred to light up in this chapter. If either of the following: •...system emits a beep code, see Table 3-2. 5. Proceed to the next section, "Internal Visual Inspection." Remove the computer cover. 2-4 Dell WorkStation 400 Systems Service Manual Internal Visual Inspection CAUTION: Before you perform the visual inspection, refer to "System Features" in Chapter 1 to the source of a ...
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... this chapter or the tests in troubleshooting all tests for loading the diagnostics. If no errors are found in the Diagnostics and Troubleshooting Guide. 2-6 Dell WorkStation 400 Systems Service Manual If a RAM error is loading. CAUTION: To prevent damage to the original diagnostics diskette, always use a backup copy of the computer system. Before the...
... this chapter or the tests in troubleshooting all tests for loading the diagnostics. If no errors are found in the Diagnostics and Troubleshooting Guide. 2-6 Dell WorkStation 400 Systems Service Manual If a RAM error is loading. CAUTION: To prevent damage to the original diagnostics diskette, always use a backup copy of the computer system. Before the...
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... KB of main memory Slave DMA-register failure Defective system board 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 Dell WorkStation 400 Systems Service Manual Table 3-1.
... KB of main memory Slave DMA-register failure Defective system board 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 Dell WorkStation 400 Systems Service Manual Table 3-1.
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... a fatal error: • Bad error-correction code (ECC) on the monitor screen. The system will power off • Warning: Previous shutdown due to fan failure 3-4 Dell WorkStation 400 Systems Service Manual When a fatal error occurs, the system usually cannot be rebooted until an appropriate hardware change has been made. Some of a problem.
... a fatal error: • Bad error-correction code (ECC) on the monitor screen. The system will power off • Warning: Previous shutdown due to fan failure 3-4 Dell WorkStation 400 Systems Service Manual When a fatal error occurs, the system usually cannot be rebooted until an appropriate hardware change has been made. Some of a problem.
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... disk controller failure Hard disk drive read failure Hard disk failure Hard-disk drive failed to initialize. Defective keyboard/ mouse controller (defective system board). 3-6 Dell WorkStation 400 Systems Service Manual Keyboard clock line failure Keyboard failure Keyboard data line failure System cannot communicate with keyboard. feature activated. Table 3-2. Invalid configuration information please run SETUP...
... disk controller failure Hard disk drive read failure Hard disk failure Hard-disk drive failed to initialize. Defective keyboard/ mouse controller (defective system board). 3-6 Dell WorkStation 400 Systems Service Manual Keyboard clock line failure Keyboard failure Keyboard data line failure System cannot communicate with keyboard. feature activated. Table 3-2. Invalid configuration information please run SETUP...
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... and Play Configuration Error Read fault Requested sector not found Reset failed Sector not found No operating system on diskette or hard-disk drive. 3-8 Dell WorkStation 400 Systems Service Manual System could not find particular sector on diskette or hard-disk drive. MS-DOS unable to boot. Faulty diskette, diskette/ tape drive subsystem, hard...
... and Play Configuration Error Read fault Requested sector not found Reset failed Sector not found No operating system on diskette or hard-disk drive. 3-8 Dell WorkStation 400 Systems Service Manual System could not find particular sector on diskette or hard-disk drive. MS-DOS unable to boot. Faulty diskette, diskette/ tape drive subsystem, hard...
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...off POST queried fan status. Processor fan failed during the previous operating session. Faulty diskette or harddisk drive. 3-10 Dell WorkStation 400 Systems Service Manual Table 3-2. POST queried EIDE drive for status. Warning: Fan failure. It is operating outside of normal specifications. ... replace your hard-disk drive by calling your support desk or Dell Computer Corporation. Faulty or missing processor fan. System Error Messages (continued) Message Definition Probable Causes WARNING: Dell's Disk Monitoring System has detected that drive [0/1] on selected drive...
...off POST queried fan status. Processor fan failed during the previous operating session. Faulty diskette or harddisk drive. 3-10 Dell WorkStation 400 Systems Service Manual Table 3-2. POST queried EIDE drive for status. Warning: Fan failure. It is operating outside of normal specifications. ... replace your hard-disk drive by calling your support desk or Dell Computer Corporation. Faulty or missing processor fan. System Error Messages (continued) Message Definition Probable Causes WARNING: Dell's Disk Monitoring System has detected that drive [0/1] on selected drive...