Dell Precision T5400 User's Guide - Page 123
Diagnostic Light Codes During POST, Light Pattern, Problem Description, Suggested Resolution - motherboard
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Diagnostic Lights Power Light amber (blinking) amber (blinking) amber (blinking) amber (blinking) (blinking) amber Problem Description Suggested Resolution A possible system board failure has occurred. Contact Dell for technical assistance (see "Contacting Dell" on page 295). A possible system board failure has occurred. Contact Dell for technical assistance (see "Contacting Dell" on page 295). A possible system board failure has occurred. Contact Dell for technical assistance (see "Contacting Dell" on page 295). A possible system board failure has occurred. Contact Dell for technical assistance (see "Contacting Dell" on page 295). A processor mismatch See "Troubleshooting" on exists. page 107 and then to "Processor" on page 179. (blinking) amber Power supply cables are not properly connected. Verify that both power supply cables are plugged in to the motherboard. Diagnostic Light Codes During POST The power light displays a solid green for diagnostic light codes during POST. Light Pattern Problem Description A possible processor failure has occurred. Suggested Resolution Reinstall the processor (see "Processor" on page 179) and restart the computer. Troubleshooting Tools 123