IBM 8488 Hardware Maintenance Manual - Page 135
Temperature-related, system, shutdown, drive, checkout
UPC - 000435695277
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Note: See "System replaceable units" on page 131 to determine which components should be replaced by a field service technician. Message Action System shutoff due to x V under voltage 1. Check the power-supply connectors. (level-critical; system shutoff due to x supply under voltage) 2. Power supply. 3. Power cage assembly, if installed. System shutoff due to VRM x over voltage v Replace VRM x. System shutoff due to excessive (< 240 1. See "Power checkout" on page 21. VA) loading 2. Cycle ac on/off. Temperature-related system shutdown Note: See "System replaceable units" on page 131 to determine which components should be replaced by a field service technician. Message Action System shutoff due to board over temperature (level-critical; board is over temperature) 1. Ensure that the system is being properly cooled; see "System reliability guidelines" on page 25. 2. Replace board. System shutoff due to CPU x over temperature (level-critical; CPU x is over temperature) 1. Ensure that the system is being properly cooled; see "System reliability guidelines" on page 25. 2. Replace microprocessor x. System shutoff due to CPU x under temperature (level-critical; CPU x is under temperature) v Ambient temperature must be within normal operating specifications; see "Features and specifications" on page 3. System shutoff due to DASD temperature (sensor x) (level-critical; DASD area reported temperature outside recommended operating range) v Ensure that the system is being properly cooled; see "System reliability guidelines" on page 25. System shutoff due to high ambient temperature (level-critical; high ambient temperature) v 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) v Ambient temperature must be within normal operating specifications; see "Features and specifications" on page 3. Hard disk drive checkout Note: See "System replaceable units" on page 131 to determine which components should be replaced by a field service technician. Message Action Hard drive x removal detected (level-critical; hard drive x has been removed) v Information only; take action as appropriate. Chapter 6. Symptom-to-FRU index 125