Message/Symptom FRU/ActionProgram loads from the hard disk with a known-gooddiagnostics diskette in the first 3.5-inch diskette drive1. Run the Setup Utility program and check Startupsequence.2. Diskette Drive3. Diskette Drive Cable4. System Board5. Power SupplyRPL computer cannot access programs from its own harddisk.1. If network administrator is using LCCM Hybrid RPL,check startup sequence:a. First device - networkb. Second device - hard disk2. Hard disk driveRPL computer does not RPL from server 1. Check startup sequence.2. Check the network adapter LED status.Serial or parallel connector device failure (system boardconnector)1. External Device Self-Test OK?2. External Device3. Cable4. System BoardSerial or parallel connector device failure (adapterconnector)1. External Device Self-Test OK?2. External Device3. Cable4. Alternate Adapter5. System BoardSome or all keys on the keyboard do not work 1. Keyboard2. Keyboard Cable3. System BoardUndetermined problemsThis section provides instructions on how to find out the failing devices or adapters.1. Power-off the computer.2. Remove or disconnect the following components (if installed) one at a time.a. External devices (modem, printer, or mouse)b. Any adaptersc. Memory modulesd. Extended video memorye. External Cachef. External Cache RAMg. Hard disk driveh. Diskette drive3. Power-on the computer to re-test the system.4. Repeat steps 1 through 3 until you find the failing device or adapter.If all devices and adapters have been removed, and the problem continues, replace the system board. See“System board” on page 173.Chapter 8. Service checkout and symptom-to-FRU index 97
