Lenovo NetVista Hardware Maintenance Manual for NetVista 6018, 6058, 6059, 626 - Page 122
Power supply, the computer will not power-off, use the following procedures.
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If the printer self-test does not run correctly, the problem is in the printer. Refer to the printer service manual. 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 Verify that the voltage-selector switch is set for the Correct the voltage-selector switch setting correct voltage. Check the following for proper installation. 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 Reseat 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. 108 Hardware Maintenance Manual: IBM NetVista Computer Types 6058, 6059, 6269, 6568, 6569, 6578, 6579, 6648, 6649