Ibm 6648 Manuale Utente Scaricare il pdf (Pagina 44)

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.

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.

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

6649

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Ibm 6648 Manuale Utente Pagina 44