IBM PC 300 Maintenance Service Manual page 63

Table 2-3 Error Symptoms List
Error Symptoms Action/FRU
NOTE: To diagnose a problem, first find the error symptom in the left column. If
directed to a check procedure, replace the FRU indicated in the check
procedure. If no check procedure is indicated, the first Action/FRU listed in right
column is the most likely cause.
Blinking cursor only; "Start" on page 55.
system does not
Diskette/IDE drive connection/cables
work.
Diskette/IDE disk drives
"Undetermined Problems" on page 80.
System board
Diskette Drive
NOTE: Ensure that the diskette drive is configured correctly in BIOS Setup and
its read/write head is clean before diagnosing any diskette drive problems.
Media and drive Make sure that the diskette drive is configured correctly in
are mismatched. the Disk Drives of BIOS Setup.
Make sure that the diskette drive is correctly formatted.
Diskette drive connection/cable
Diskette drive
System board
Diskette drive does Make sure that the diskette drive is not set to [None] in the
not work. "Standard CMOS Setup" of BIOS Setup.
Diskette drive power
Diskette drive connection/cable
Diskette drive
System board
Diskette drive test Diskette
failed.
Diskette drive
Diskette drive cable
System board
Hard Disk Drive
NOTE: Ensure hard disk drive is configured correctly in BIOS Setup,
cable/jumper are set correctly before diagnosing any hard disk drive problems.
Hard disk drive test Load default settings.
failed.
Hard disk drive cable.
Hard disk drive.
System board.
Load default settings.
Hard disk drive
format error.
Hard disk drive cable.
Hard disk drive.
System board.
Hard disk drive Load default settings.
write error.
Hard disk drive.
Hard disk drive With the system power on, measure the voltage of hard
LED fails to light, disk LED connector (Please refer to Parts/Test Point
but system Locations obn page 111).
operates normally.
CD-ROM Drive
63