Message/Symptom FRU/Action″Insert a Diskette″ icon appears with aknown-good diagnostics diskette in the first3.5-inch diskette drive.1. System Board2. Diskette Drive Cable3. Riser card4. Network AdapterIntensity or color varies from left to right ofcharacters and color bars 1. Display2. System BoardNo power or fan not running 1. See “Power Supply Errors” on page 71.Non-system disk or disk error-type messagewith a known-good diagnostic diskette. 1. Diskette Drive2. System Board3. Diskette Drive Cable4. Riser cardOther display symptoms not listed above(including blank or illegible display) 1. Display2. System BoardPower-on indicator or hard disk drive in-uselight not on, but computer works correctly 1. Power Supply2. System Board3. LED CablesPrinter problems 1. PrinterProgram loads from the hard disk with aknown-good diagnostics diskette in the first3.5-inch diskette drive1. Run Setup2. Diskette Drive3. Diskette Drive Cable4. System Board5. Riser card6. Power SupplyRPL computer cannot access programs fromits own hard disk. 1. If network administrator is usingLCCM Hybrid RPL, check startupsequence:a. First device - networkb. Second device - hard disk2. Hard disk driveRPL computer does not RPL from server 1. Check startup sequence2. Check the network adapter LED statusSerial or parallel port device failure (systemboard port) 1. External Device Self-Test OK?2. External Device3. Cable4. System BoardSerial or parallel port device failure (adapterport) 1. External Device Self-Test OK?2. External Device3. Cable4. Alternate Adapter5. System Board108 Hardware Maintenance Manual
