Power Supply LED Errors

^{IBM-AUSTRIA - PC-HW-Support 30 Aug 1999}

Power Supply LED Errors

Power Supply LED Errors

Use the power supply LED information on the following page to trouble shoot power supply problems.

Note: The minimum configuration required for the DC Good light to come on is.

Power Supply
Power Backplane
Power AC Inlet Box
System Board (With pins 2 and 3 of J32 connected together to bypass the power switch (button). The default is pins 1 and 2.)
Processor Board (Verify that the J10 and J17 connectors are are installed correctly.)
Memory-Module Kits (Minimum requirement = 1 bank of 64 MB DIMMs)

AC Good LED DC Good LED Description FRU / Action Off Off No power to system or AC problem. 1. Check AC power to system 2. Power Supply 3. Power Backplane 4. Power AC Inlet Box On Off Standby mode or DC problem. 1. Verify power supply switch is on 2. Check processor connectors J10 and J17. 3. Move jumper J32 to pins 2-3 to bypass power control. If the DC Good LED comes on, reseat the system power switch (button) assembly cable connector to the system board. 4. Remove the adapters and disconnect the cables and power connectors to all internal and external devices. Power-on the system. If the DC Good LED comes on, replace the adapters and devices one at a time until you isolate the problem. 5. Power Supply 6. Power Backplane 7. System Board 8. Processor Board. On On Power is OK N/A

AC Good LED	DC Good LED	Description	FRU / Action
Off	Off	No power to system or AC problem.	1. Check AC power to system 2. Power Supply 3. Power Backplane 4. Power AC Inlet Box
On	Off	Standby mode or DC problem.	1. Verify power supply switch is on 2. Check processor connectors J10 and J17. 3. Move jumper J32 to pins 2-3 to bypass power control. If the DC Good LED comes on, reseat the system power switch (button) assembly cable connector to the system board. 4. Remove the adapters and disconnect the cables and power connectors to all internal and external devices. Power-on the system. If the DC Good LED comes on, replace the adapters and devices one at a time until you isolate the problem. 5. Power Supply 6. Power Backplane 7. System Board 8. Processor Board.
On	On	Power is OK	N/A

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