IBM Aptiva 2187 Service Manual

2-9NOTES:If an error message and incorrect audio response occur, diagnose the errormessage first.If you cannot run the diagnostics program tests but did receive a POST errorcode, diagnose the POST error message.If you did not receive any error message, look for a description of your errorsymptoms in “Error Symptoms List” in table 2-3.Check all power supply voltages, switch, and jumper settings before youreplace the system board. Also check the power supply voltages if you havea “system no-power” condition. (See “Power Supply Cable ConnectorSpecifications” on page 5-7 and "Aptiva Type 2187 System Board Layout" onpage 5-3.)If you are unable to correct the problem by using the “BIOS Error Codes,Messages, And Beeps List” table and “Error Symptoms List” table, go to"Undetermined Problems” on page 2-40.Table 2-1 BIOS Error Codes, Messages, and Beeps ListBIOS Error Codes,Messages, beepsAction/FRUNOTE: To diagnose a problem, first find the BIOS error messages, codes,or beeps in left column. If directed to a check procedure, replace the FRUindicated in the check procedure. If no check procedure is indicated, the firstAction/FRU listed in right column is the most likely cause.POST Error Codes and Messages161CMOS battery failedLoad default settings in Setup and reboot thesystem.CMOS battery.System board.162CMOS checksum errorMake sure the equipment (diskette drive,hard disk drive, keyboard, mouse, etc.) areconnected properly and are set correctly inBIOS Setup.Load default settings in setup.CMOS battery should be replaced.System board.164Memory size errorMake sure the DIMMs are inserted properly.System board.