v For information about power-supply problems, see “Solving power problems”on page 175, “Power problems” on page 166, and “Power-supply LEDs” on page141.v For intermittent problems, check the event log; see “Event logs” on page 146 andAppendix C, “DSA diagnostic test results,” on page 693.Performing the checkout procedureUse this information to perform the checkout procedure.About this taskTo perform the checkout procedure, complete the following steps:Procedure1. Is the server part of a cluster?v No: Go to step 2.v Yes: Shut down all failing servers that are related to the cluster. Go to step 2.2. Complete the following steps:a. Check the power supply LEDs (see “Power-supply LEDs” on page 141).b. Turn off the server and all external devices.c. Check all internal and external devices for compatibility athttp://www.ibm.com/systems/info/x86servers/serverproven/compat/us/.d. Check all cables and power cords.e. Set all display controls to the middle positions.f. Turn on all external devices.g. Turn on the server. If the server does not start, see “Troubleshooting bysymptom” on page 153.h. Check the system-error LED on the operator information panel. If it is lit,check the light path diagnostics LEDs (see “Light path diagnostics” on page134).i. Check for the following results:v Successful completion of POST (see “POST” on page 149 for moreinformation)v Successful completion of startup, which is indicated by a readable displayof the operating-system desktop3. Is there a readable image on the monitor screen?v No: Find the failure symptom in “Troubleshooting by symptom” on page153; if necessary, see “Solving undetermined problems” on page 177.v Yes: Run DSA (see “Running the DSA Preboot diagnostic programs” on page151).– If DSA reports an error, follow the instructions in Appendix C, “DSAdiagnostic test results,” on page 693.– If DSA does not report an error but you still suspect a problem, see“Solving undetermined problems” on page 177.Chapter 4. Troubleshooting 131
