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Troubleshooting Your System
Dell™PowerVault™NX1950SystemsHardwareOwner'sManual
Safety First—For You and Your System
To perform certain procedures in this document, you must remove the system cover and work inside the system. While working inside the system, do not
attempt to service the system except as explained in this guide and elsewhere in your system documentation.
Start-Up Routine
Look and listen during the system's start-up routine for the indications described in Table1-1.
Table 4-1. Start-Up Routine Indications
Checking the Equipment
This section provides troubleshooting procedures for external devices attached to the system, such as the monitor, keyboard, or mouse. Before you perform
any of the procedures, see Troubleshooting External Connections.
Troubleshooting IRQ Assignment Conflicts
MostPCIdevicescanshareanIRQwithanotherdevice,buttheycannotuseanIRQsimultaneously.Toavoidthistypeofconflict,seethedocumentationfor
each PCI device for specific IRQ requirements. Table4-2 lists the IRQ assignments.
Table 4-2.IRQAssignmentDefaults
Safety First—For You and Your System
Start-Up Routine
Checking the Equipment
Troubleshooting Basic I/O Functions
Troubleshooting a NIC
Troubleshooting a Wet System
Troubleshooting a Damaged System
Troubleshooting the System Battery
Troubleshooting Power Supplies
Troubleshooting System Cooling Problems
Troubleshooting System Memory
Troubleshooting an Optical Drive
Troubleshooting a Hard Drive
Troubleshooting a SAS RAID Controller Daughter Card
Troubleshooting Expansion Cards
Troubleshooting the Microprocessors
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system.
Before performing any procedure, see your Product Information Guide for complete information about safety precautions, working inside the
computer and protecting against electrostatic discharge.
Look/listen for:
Action
A status or error message displayed on the front-panelLCD.
See LCD Status Messages.
An error message displayed on the monitor.
See System Messages.
Alert messages from the systems management software.
See the systems management software documentation.
The monitor's power indicator.
See Troubleshooting the Video Subsystem.
The keyboard indicators.
See Troubleshooting the Keyboard.
The USB CD drive activity indicator.
See Troubleshooting a USB Device.
The CD drive activity indicator.
See Troubleshooting an Optical Drive.
The hard-drive activity indicator.
See Troubleshooting a Hard Drive.
An unfamiliar constant scraping or grinding sound when you access a drive.
See Getting Help.
IRQ Line
Assignment
IRQ0
System timer
IRQ1
Keyboard controller
IRQ2
Interrupt controller 1 to enable IRQ8 through IRQ15
IRQ3
Available
IRQ4
Serial port 1 (COM1 and COM3)
- About Your System 2
- Hard-Drive Indicator Codes 3
- Connecting External Devices 4
- Power Indicator Codes 5
- NIC Indicator Codes 5
- LCD Status Messages 6
- Removing LCD Status Messages 8
- System Messages 9
- Warning Messages 11
- Diagnostics Messages 11
- Alert Messages 11
- Getting Help 14
- Problems With Your Order 15
- Product Information 15
- Before You Call 16
- Contacting Dell 16
- Glossary 26
- Recommended Tools 31
- Inside the System 31
- Opening the System 33
- Cooling Fan Modules 34
- Cooling Shrouds 35
- Power Supplies 36
- Replacing a Power Supply 37
- RAID Battery 38
- Expansion Cards 39
- System Memory 40
- Memory Sparing Support 41
- Memory Mirroring Support 41
- Installing Memory Modules 41
- Removing Memory Modules 42
- Processors 43
- Installing a Processor 44
- RAC Card 45
- Optical Drive 46
- Hard Drives 47
- Expansion-Card Riser 49
- Backplane Board 50
- Sideplane Board 51
- System Battery 52
- Removing the Control Panel 53
- Installing the Control Panel 54
- Removing the System Board 55
- Installing the System Board 56
- Jumpers and Connectors 58
- System Board Connectors 59
- System Setup Options 62
- CPU Information Screen 64
- Integrated Devices Screen 64
- System Security Screen 64
- Exit Screen 65
- Using the System Password 65
- Using the Setup Password 67
- BMC Setup Module Options 68
- Start-Up Routine 69
- Checking the Equipment 69
- Troubleshooting the Keyboard 70
- Problem 71
- Troubleshooting a NIC 72
- Troubleshooting a Fan 75
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