User Manual
Page 10
... blue light indicates that the computer is reading data from or writing data to the power connector (at support.dell.com/ manuals. Diagnostic lights Four lights located on the diagnostic lights, see the Service Manual at the back of the power system by pressing the test button. AC power must be connected to the...
... blue light indicates that the computer is reading data from or writing data to the power connector (at support.dell.com/ manuals. Diagnostic lights Four lights located on the diagnostic lights, see the Service Manual at the back of the power system by pressing the test button. AC power must be connected to the...