Message/Symptom FRU/ActionNon-system disk or disk error-type messagewith a known-good diagnostic diskette. 1. Diskette Drive2. System Board3. Diskette Drive CableOther 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 switch/LED assembly2. System BoardPrinter problems 1. Printer2. System BoardProgram loads from the hard disk with aknown-good diagnostics diskette in the first3.5-inch diskette drive1. Run Setup and check Startup sequence.2. Diskette Drive3. Diskette Drive Cable4. System Board5. 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 BoardSome or all keys on the keyboard do notwork 1. Keyboard2. Keyboard Cable3. System BoardUndetermined problemsIf this computer has a parallel ATA hard disk drive, make sure that the hard diskdrive is jumpered as a master and the optical drive is jumpered as a slave.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 adapters80 Hardware Maintenance Manual
