ncr/doc/Old Models/Technical Manuals/7453_... - Alsys Data

Chapter 2: POST Diagnostics 2-5Beeps Error Message Corrective Action4-4-3-1 02F8: CPU over temperatureerror4-4-3-2 02FA: Cannot read CPUtemperature4-4-3-3 02FA: Cannot read CPUtemperature4-4-3-4 02FB: Cannot read SystemtemperatureCheck/replace Fan,Check air vents, etcCheck/replace Fan,Check air vents, etc.Replace MotherboardReplace Motherboard4-4-4-1 02FC: SMB Connect Failed Replace Motherboard4-4-4-2 02FD: SMB clock chipinitialization failedReplace Motherboard4-4-4-3 02FE: Battery not installed Install BatteryTerminal POST ErrorsThe BIOS also can issue the following beep codes during POST:• One long tone followed by three short tones if the videoconfiguration fails.• One long tone followed by two short tones if an external ROMmodule does not properly checksum to zero.An external ROM module (LAN or Video board) can also issue audibleerrors, usually consisting of one long tone followed by a series of shorttones.There are several POST routines that issue a POST Terminal Error andshut down the system if they fail. Before shutting down the system, theterminal-error handler issues a beep code signifying the test pointerror, then writes the error to port 80h and attempts to initialize thevideo. The handler writes the error in the upper left corner of thescreen (using both mono and color adapters). The routine derives thebeep code from the test point error as follows: