IBM Aptiva 2170, Hardware Maintenance Service Manual

Page: 77 / 252

Check Procedures 43
Table 2-2 BIOS Error Beeps List
NOTE:
To diagnose a problem, first find the BIOS error beeps in 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.
BIOS Error Beeps
(L: long beep, S: short beep)
Action/FRU
L-S-L-L
DMA internal register test fail
L-S-S-S
KBC (keyboard controller) self
test is failed or not installed
L-S-S-L
Shutdown byte in RTC/CMOS
read/write test failed
System board
L-S-L-S
System DRAM refresh cycle is
out of specification
L-L-L-S
The first 128KB of base memory
r/w test failed
Insert the memory modules in the DIMM sockets
properly, then reboot the system.
Memory module. See the “Step 005” of “Memory”
on page 61 to replace memory module.
System board
L-L-S-L
The BIOS code in flash ROM is
corrupted See “Flash (BIOS) Update Procedure” on page
12
System board
L-S-S
Video buffer has error Video adapter card
System board
S-S
Console does not exist and
message displayed to terminal Reconnect monitor.
Monitor.
S
User is allowed to enter Setup
after this beep
See “BIOS Setup Utility” on page 14.