Dell PowerVault 775N, Installation And Troubleshooting Manual

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persists, see " Getting Help ."
NOTE: For the full name of an abbreviation or acronym used in this table, see " Abbreviations and Acronyms ."
Solving Problems Described by LCD Status Messages
When a single message appears on the status LCD, locate the code in Table 2-9 and perform the suggested corrective action.
The code on the LCD can often specify a very precise fault condition that is easily corrected. For example, if the code
E0280 MISSING VRM 2
appears, you know that a microprocessor is installed in socket 2, but the VRM for that microprocessor
is either improperly installed or missing.
In contrast, you might be able to determine the problem if multiple related errors occur. For example, if you receive a series
of messages indicating multiple voltage faults, you might determine that the problem is a failing power supply.
Removing LCD Status Messages
For faults associated with sensors, such as temperature, voltage, fans, and so on, the LCD message is automatically removed
when that sensor returns to a normal state. For example, if temperature for a component goes out of range, the LCD displays
the fault; when the temperature returns to the acceptable range, the message is removed from the LCD. For other faults, you
must take action to remove the message from the display:
Clear the SEL — You can perform this task remotely, but you will lose the event history for the system.
Chassis intrusion — When you remove the cover, the system assumes that you are servicing the bad component; the
LCD clears when you replace the cover.
Power cycle — Turn off the system and disconnect it from the electrical outlet; wait approximately ten seconds,
reconnect the power cable, and restart the system.
Any of these actions will remove fault messages, and return the status indicators and LCD colors to the normal state.
Messages will reappear under the following conditions:
The sensor returns to a normal state but fails again, resulting in a new SEL entry.
The system is reset and new error events are detected.
A failure is recorded from another source that maps to the same display entry.
System Messages
System messages appear on the console during POST to notify you of a possible problem with the system. If you are
performing console redirection, system messages will appear on the remote console. Table 2-10 lists the system messages
that can occur and the probable cause for each message.
NOTE: If you receive a system message that is not listed in Table 2-10 , check the documentation for the application
program that is running when the message appears or the operating system's documentation for an explanation of the
message and recommended action.
NOTE: Before you perform any procedures described in Table 2-10 , see " Before You Begin " in "Troubleshooting Your
System."
Table 2-10. System Messages
Message Causes Corrective Actions
Address mark not found
Faulty CD/diskette drive
subsystem or hard-drive
subsystem; faulty system
board.
See " Troubleshooting the Diskette Drive ,"
" Troubleshooting a CD Drive ," and
" Troubleshooting Hard Drives " in
"Troubleshooting Your System."
Alert! Current configuration does not
support redundant memory. Redundant
memory is disabled.
Memory modules installed
are not the same type and
Ensure that all banks contain memory modules
of the same type and size and that they are