IBM 887022X Maintenance Manual - Page 216
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Note: See Chapter 8, "Parts listing, Type 8870," on page 249 to determine which components are replaceable by the customer, and which components should be replaced by an IBM field service technician. Service Processor message FRU/action System Power Good Fault 1. Refer to previous log entries. 2. Verify that the Light Path card indicates a power supply error. 3. Verify that the ac/dc lights on the power supplies are ON. 4. Verify that the system power present indicator is ON (see "Center plane connectors, jumpers and LEDs" on page 159). 5. If the system power present indicator is OFF: a. Power backplane b. Power supplies 6. Failing component indicated by Light Path. 7. VRMs on failing board indicated by the Light Path. System shutoff due to +12V over voltage 1. Power backplane 2. Power supplies System shutoff due to +2.5V over voltage 1. Center plane VRM 2. VRM (J28) on Lower SMP Module 3. VRM (J28) on Upper SMP Module System shutoff due to +2.5V under voltage 1. Failing component indicated by Light Path 2. Center plane VRM 3. VRM (J28) on Lower SMP Module 4. VRM (J28) on Upper SMP Module System shutoff due to 1.8V CPU over voltage 1. Failing component indicated by Light Path 2. Failing microprocessor VRM 3. Microprocessor System shutoff due to 1.8V CPU under voltage 1. Failing component indicated by Light Path 2. Failing microprocessor VRM 3. Microprocessor System shutoff due to 12V under voltage 1. Power backplane 2. Power supplies System shutoff due to 3.3V PCI over voltage 1. Remove PCI adapters and reinstall one at a time, restarting the server each time, to isolate failing adapter. 2. PCI-X VRM. 3. PCI-X Board. 4. I/O Board VRM. 5. I/O Board. System shutoff due to 3.3V PCI under voltage 1. Remove PCI adapters and reinstall one at a time, restarting the server each time, to isolate failing adapter. 2. PCI-X VRM. 3. PCI-X Board. 206 xSeries 445 Type 8870: Hardware Maintenance Manual and Troubleshooting Guide
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