General Memory Module Installation Guidelines

55

Mode-Specific Guidelines

56

Sample Memory Configurations

57

Removing Memory Modules

61

Installing Memory Modules

62

NVRAM Backup Battery

63

Replacing The NVRAM Backup Battery

63

Storage Controller Card/PCIe Extender Card

64

Removing The Storage Controller Card/PCIe Extender Card

65

Installing The Storage Controller Card/PCIe Extender Card

67

4 Troubleshooting Your System

68

Safety First—For You and Your System

68

Troubleshooting System Memory

68

Troubleshooting Hard Drives

69

Troubleshooting USB Devices

69

Troubleshooting An Internal SD Card

70

Troubleshooting Processors

70

Troubleshooting The Blade System Board

71

Troubleshooting The NVRAM Backup Battery

71

5 Using System Diagnostics

72

Dell Online Diagnostics

72

Dell Embedded System Diagnostics

72

When To Use The Embedded System Diagnostics

72

Running The Embedded System Diagnostics

73

System Diagnostic Controls

73

6 Jumpers And Connectors

74

System Board Jumper Settings

74

System Board Connectors

75

Disabling A Forgotten Password

76

7 Technical Specifications

78

8 System Messages

81

LCD Status Messages

81

Viewing LCD Messages

81

Removing LCD Messages

81

System Error Messages

81

Warning Messages

154

Diagnostic Messages

154

Page 5
Image 5
Dell M820 owner manual Troubleshooting Your System, Using System Diagnostics, Jumpers And Connectors