Message ActionSystem shutdue to excessive (< 240 VA)loading 1. See “Power checkout” on page 19.2. Cycle AC On/Off to enable retryTemperature related system shutdownMessage ActionSystem shutoff due to board overtemperature (level-critical; board is overtemperature)1. Ensure system is being properly cooled, see “Temperaturecheckout” on page 21.2. Replace boardSystem shutoff due to CPU ″X″ overtemperature (level-critical; CPU ″X″ is overtemperature)1. Ensure system is being properly cooled, see “Temperaturecheckout” on page 21.2. Replace CPU ″X″System shutoff due to CPU ″X″ undertemperature (level-critical; CPU ″X″ is undertemperature)1. Ambient temperature must be within normal operatingspecifications, see “Features and specifications” on page 3.2.System shutoff due to DASD temperature(sensor X) (level-critical; DASD areareported temperature outside recommendedoperating range)1. Ensure system is being properly cooled, see “Temperaturecheckout” on page 21.System shutoff due to high ambienttemperature (level-critical; high ambienttemperature)1. Ambient temperature must be within normal operatingspecifications, see “Features and specifications” on page 3.System shutoff due to system board undertemperature (level-critical; system board isunder temperature)1. Ambient temperature must be within normal operatingspecifications, see “Features and specifications” on page 3.DASD checkoutMessage ActionHard drive ″X″ removal detected(level-critical; hard drive ″X″ has beenremoved)1. Information only, take action as appropriate.Host Built-In Self Test (BIST)Message ActionHost fail (level-informational; host’sbuilt-in self test failed) 1. Reseat CPU2. Reseat VRM3. Replace CPUSymptom-to-FRU index 99