IBM 8862 Hardware Maintenance Manual - Page 141

Note: See Chapter 7, "Parts listing, Types 8861, 8862," on page 139 to determine which components are replaceable by the customer and which components must be replaced by an IBM field service technician. Power supply LEDs AC DC good good Fan Operator information panel LED Description FRU/action Off Off Off Off No power to system 1. Check ac power to system. or ac problem. 2. Make sure power cord is plugged in to a functioning power source. 3. Isolate by removing one power supply at a time. On Off Off Off DC source power 1. Make sure memory cassette is seated in problem microprocessor tray assembly and that microprocessor tray assembly is connected to power backplane. 2. Isolate by removing one power supply at a time. 3. View service processor error logs through serial connection of remote supervisor adapter. On On Off Off Standby power problem 1. View service processor error logs through serial connection of remote supervisor adapter. 2. If no 3.3vsby, replace power backplane. 3. If no 5vco, isolate by removing one power supply at a time. On On Off Blinking System power-on 1. View service processor error logs through problem serial connection of remote supervisor adapter. 2. Press power button on operator information panel. 3. Use force power-on jumper as debug aid (see "Microprocessor board connectors, jumpers and LEDs" on page 68) to eliminate operator information panel switch and cable. 4. Remove service processor and attempt to turn on the server. On On On On Power supply fan v Replace power supply. fault On On Off On Power is OK. N/A Chapter 6. Symptom-to-FRU index 131