Dell R 420 Manual

5.If SD card 1 has failed, remove the card from SD card slot 1. If SD card 2 has failed, install a new SD card in SD card slot 2 and proceed to step 7.
6.Remove the card present in SD card slot 2 and insert it into SD card slot 1.
7.Insert the new SD card into SD card slot 2.
8.Close the system.
9.Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.
10.Enter the System Setup and ensure that the Internal SD Card Port and Internal SD Card Redundancy mode...

6.Run the appropriate diagnostics test.
If you cannot resolve the problem, see Getting Help.
Troubleshooting A Hard Drive
CAUTION: Many repairs may only be done by a certified service technician. You should only perform 
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or 
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your 
warranty. Read and follow the safety instructions that came...

9.Open the system.
10.Remove all expansion cards installed in the system.
11.Close the system.
12.Reconnect the system to the electrical outlet, and turn on the system and attached peripherals.
13.Run the appropriate diagnostic test. For more information, see Using System Diagnostics. If the tests fail, see Getting Help.
14.For each expansion card you removed in step 10, perform the following steps:
a.Turn off the system and attached peripherals, and disconnect the system from the electrical outlet....

Troubleshooting Processors
CAUTION: Many repairs may only be done by a certified service technician. You should only perform 
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or 
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your 
warranty. Read and follow the safety instructions that came with the product.
1.Run the appropriate diagnostics test.
2.Turn off the system and attached...

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Using System Diagnostics
If you experience a problem with your system, run the system diagnostics before contacting Dell for technical assistance. The purpose of running system diagnostics is to test your system hardware without requiring additional  equipment or risking data loss. If you are unable to fix the problem yourself, service and support personnel can use the 
diagnostics results to help you solve the problem.
Dell Online Diagnostics
Dell Online Diagnostics, a stand-alone suite of diagnostic...

The ePSA Pre-boot System Assessment window is displayed, listing all devices detected in the system. The 
diagnostics starts executing the tests on all the detected devices.
System Diagnostic Controls
MenuDescriptionConfigurationDisplays the configuration and status information of all detected devices.ResultsDisplays the results of all tests that are executed.System HealthProvides the current overview of the system performance.Event LogDisplays a time-stamped log of the results of all tests run on the...

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Jumpers And Connectors
System Board Jumper Settings
For information on resetting the password jumper to disable a password, see Disabling A Forgotten Password.
Table 5. System Board Jumper SettingsJumperSettingDescriptionPWRD_EN
 (default)
The password feature is enabled (pins 2–4).The password feature is disabled (pins 4–6). iDRAC local 
access is unlocked at the next AC power cycle.NVRAM_CLR
 (default)
The configuration settings are retained at system boot 
(pins 3–5).The configuration settings are...

System Board Connectors
Figure 61. System Board Jumpers and Connectors
ItemConnectorDescription1INT_STORAGEStorage controller card connector2ID_BTNSystem identification button3CMA_JACKSystem identification connector4USB 2USB connector5USB 1USB connector6IO_RISER2Riser 2 connector7NIC2Network connector8NIC1Network connector9VGAVideo connector10COMSerial connector11IO_RISER1Riser 1 connector12CPU2Processor socket 213FAN6Cooling fan connector14FAN5Cooling fan connector118 

ItemConnectorDescription15B1, B4, B2, B5, B3, B6Memory module sockets16FAN4Cooling fan connector17FAN3Cooling fan connector18PWR_CONN_18-pin power connector19FAN2Cooling fan connector20A1, A4, A2, A5, A3, A6Memory module sockets21BP_SIGBackplane signal connector22PWR_CONN_224-pin power connector23CPU1Processor socket 124PDB_CONNPower distribution board connector25BATTERYBattery connector26CTRL_PNL_MBControl panel interface connector27SATA_A-DSATA connector A-D28SATA_ESATA connector E29SAS_ASAS connector...

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