IBM 86655RY Hardware Maintenance Manual - Page 249

Temperature related system shutdown Message Action System shutoff due to board over temperature (levelcritical; processor board is over temperature) 1. Ensure system is being properly cooled, see "Temperature checkout" on page 31. 2. Replace processor board System shutoff due to CPU "X" over temperature (levelcritical; CPU "X" is over temperature) 1. Ensure system is being properly cooled, see "Temperature checkout" on page 31. 2. Replace CPU "X" System shutoff due to CPU "X" under temperature (levelcritical; CPU "X" is under temperature) 1. Ambient temperature must be within normal operating specifications (see "Features and specifications" on page 3. 2. System shutoff due to DASD temperature (sensor X) (level- 1. Ensure system is being properly cooled, see critical; DASD area reported temperature outside "Temperature checkout" on page 31. recommended operating range) System shutoff due to high ambient temperature (levelcritical; high ambient temperature) 1. Ambient temperature must be within normal operating specifications (see "Features and specifications" on page 3. System shutoff due to system board under temperature (level-critical; system board is under temperature) 1. Ambient temperature must be within normal operating specifications (see "Features and specifications" on page 3. DASD checkout Message Hard drive (SCSI ID "X") removal detected (level-critical; hard drive "X" has been removed) Hard drive (SCSI ID "X") fault Action 1. Information only, take action as appropriate. 1. Replace hard drive (SCSI ID "X"). Host Built-In Self Test (BIST) checkout Message Host BIST fail (level-informational; host's built-in self test failed) 1. Reseat CPU 2. Reseat VRM 3. Replace CPU Action I2C bus fault messages Message Failure reading I2C device. Check devices on bus 0. Action 1. Replace I/O Legacy Board Symptom-to-FRU index 239