v Follow the suggested actions in the order in which they are listed in the Action column until the problemis solved.v See Chapter 3, “Parts listing, System x3500 Type 7977,” on page 41 to determine which components arecustomer replaceable units (CRU) and which components are field replaceable units (FRU).v If an action step is preceded by “(Trained service technician only),” that step must be performed only by atrained service technician.Error code Description Action151 Real-time clock error. 1. Reseat the battery.2. Clear CMOS memory. See “System-board internalconnectors and switches” on page 8 forinformation about how to clear CMOS memory.3. Replace the following components, one at a time,in the order shown, restarting the server eachtime:a. Batteryb. (Trained service technician only) Systemboard161 Real-time clock battery error. 1. Reseat the battery.2. Clear CMOS memory. See “System-board internalconnectors and switches” on page 8 forinformation about how to clear CMOS memory.3. Replace the following components, one at a time,in the order shown, restarting the server eachtime:a. Batteryb. (Trained service technician only) Systemboard162 A device configuration has changed 1. Run the Configuration/Setup Utility program,select Load Default Settings, and save thesettings.2. Clear CMOS memory. See “System-board internalconnectors and switches” on page 8 forinformation about how to clear CMOS memory.3. Reseat the following components:a. Batteryb. Failing device4. Replace the following components, one at a time,in the order shown, restarting the server eachtime:a. Batteryb. Failing devicec. (Trained service technician only) SystemboardChapter 5. Diagnostics 103
