Dell Inspiron 3700 Reference And Troubleshooting Manual page 160

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4-4-1 Serial port failure.
5-1-2 No usable memory.
NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary in the system Help.
C-10 Dell Inspiron 3700 System Reference and Troubleshooting Guide


 
Run the Serial Ports tests in the Dell Diagnostics. For
instructions, see "Running the Dell Diagnostics" in
Chapter 3.
Run the System Memory tests in the Dell Diagnostics.
For instructions, see "Running the Dell Diagnostics" in
Chapter 3.