Table 2-1 (Page 20 of 25). POST and Diagnostics and Utilities Index
for Symptoms, Messages, Error Codes, or Beeps
Symptoms, Messages, Error
Codes, or Beeps
Action/FRU
264 - External cache memory
size error.
“Memory” on page 2-38.
Cache tag address module and RAM
System Board
305 - System board
non-replaceable fuse can be
blown by a defective keyboard,
keyboard cable, or mouse. If you
suspect one of these FRUs,
replace it when you replace the
system board.
“Keyboard” on page 2-40.
Keyboard
Keyboard connection/cable
Mouse
System Board
3XX - Keyboard error. “Keyboard” on page 2-40.
Keyboard connection
Keyboard
System Board
601 - Diskette drive controller
error.
System Board
61X - Diskette drive test error. “Factory-Installed Drive Devices” on
page 2-46.
Diskette drive connection/cable
Diskette drive
System Board
62X - Diskette drive test error. “Factory-Installed Drive Devices” on
page 2-46.
Reformat test diskette
Diskette drive connection/cable
Diskette drive
System Board
662 - Diskette drive configuration
error.
“Factory-Installed Drive Devices” on
page 2-46.
Diskette drive connection/cable
Diskette drive
Power supply
System Board
Check Procedures 2-29
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