Diagnostic Lights - Dell Dimension K0004 Owner's Manual

60
Advanced Troubleshooting

Diagnostic Lights

To help you troubleshoot a problem, your computer is equipped with four
lights on the back panel labeled "A," "B," "C," and "D" (see page 78). These
lights can be yellow or green. When the computer starts normally, the lights
flash. After the computer starts, the lights remain green. If the computer
malfunctions, the color and sequence of the lights identify the problem.
CAUTION: Before you begin any of the procedures in this section,
follow the safety instructions on page 9.
Diagnostic Code Definition
Y Y G G Memory modules
are detected, but
a memory failure
has occurred.
A B C D
Corrective Action
• Remove and reinstall all memory
modules and CRIMMs. Ensure
that all the connector tabs are
locked. Restart the computer.
• Install the memory modules (see
page 93) in memory connectors
RIMM1 (located closest to the
microprocessor) and RIMM2 and
ensure that, if no additional
memory is used, CRIMMs are
installed in memory connectors
RIMM3 and RIMM4.
• If you installed memory modules
in memory connectors RIMM3
and RIMM4 that were not
purchased from Dell, remove the
modules and replace them with
the CRIMMs that were originally
installed in your computer.
• If available, install Dell memory of
the same type into your computer
(see page 93).
• If the problem persists, contact
Dell (see page 120).