IBM 6649, 6578, 6579 Power supply, Check/Verify FRU/Action, Reseat, Power Cord, Power-on Switch

If the printer self-test runs correctly, install a wrap plug in the parallel port and run the diagnostic tests to determine which FRU failed.

If the diagnostic tests (with the wrap plug installed) do not detect a failure, replace the printer cable. If that does not correct the problem, replace the system board or adapter connected to the printer cable.

Power supply

If the power-on indicator is not on, the power supply fan is not running, or the computer will not power-off, use the following procedures.

Check/Verify		FRU/Action
Check the following for proper installation.		Reseat
v	Power Cord
v	On/Off Switch connector
v	On/Off Switch Power Supply connector
v	System Board Power Supply connectors
v	Microprocessor(s) connection
Check the power-on switch for continuity.		Power Cord
Check the power-on switch for continuity.		Power-on Switch

If the above are correct, check the following voltages.

30Hardware Maintenance Manual: IBM NetVista Computer Types 6058, 6059, 6269, 6568, 6569, 6578, 6579, 6648,

6649