7-2 TroubleshootingThis section provides information to help isolate and repair system malfunctionsat the field level. The system has a built-in program that automatically checks itscomponents when the system is powered on. If there is a problem, the systemdisplays an error message. If this happens, follow any instructions on the screen.If screen messages do not help or an error message does not appear, refer to theinformation in this section to help determine and correct the problem. For themore common problems, refer to “Checklist” for assistance. If the informationin the checklist does not help, refer to “Diagnostics ” for more detailed problemsolving.If disassembly is required, see Section 3, “Disassembly and Reassembly.”Jumper settings are given in Section 2, “System Configuration” and inSection 4, “System Board.”ChecklistCheck the following list for a match to the system problem and the possiblecause and solution.System Problems! No power and power lamp not lit.Check that the power switch is on.Check that the AC power cord is plugged into the AC power adapter.Check that the AC power adapter cable is plugged into the system unitDC power socket.Check that the AC power cord is plugged into a live, properly groundedAC power outlet or surge protector.Check the outlet or surge protector by plugging in a lamp.! Non-System Disk error message displays when the system isstarted.A diskette is in the diskette drive, and the diskette drive is set before thehard drive in boot order. Remove the diskette from drive A and restart thesystem.! Operating system not found error message displays when thesystem is started.If a CD is in the CD-ROM drive, the system may not be able to boot. Tryremoving the CD and rebooting.! System does not boot and error message displayed on screen.Run the Setup utility (see Section 2, “System Configuration”). Check thatthe parameters are set correctly.