
3S
ys
em se
es
initialization
POST
fails
3S-1S-2S
e secon
con
ro
er
failure or re
ister failure
1S-1S-2S Mainboard failure 3S-1S-3S
n
errup
mas
re
ister) failure
1S-1S-3S
o power o
ma
n
oar
battery or CMOS is
broken
3S-2S-4S
ey
oar
mer
a
ure.
Reinstall in CMOS or skip
POST
1S-1S-4S ROM BIOS test failure 3S-3S-4S
sp
ay
a
ure or no
RAM
non-fatal failure
1S-2S-1S System time failure 3S-4S-2S
sp
ay
a
a
ne
oose,
video card not plugged well,
or video card broken
1S-2S-2S
c
anne
n
a
za
on
failure
3S-4S-3S
o
v
eo car
no
found
1S-2S-3S
c
anne
reg
s
er
failure
4S-2S-1S
ys
em rea
-
me c
oc
failure
1S-3S-1S
emory c
anne
re
res
failure (any memory
bank
4S-2S-2S
ys
em s
ar
a
ure,
setting failure or BIOS
broken
1S-3S-2S
Base memory failure
(memory bank broken or
RAM setting failure)
4S-2S-3S
a
e
sw
c
n
ey
oar
controller (8042) failure,
BIOS can not be switched to
rotected mode
1S-3S-3S
ase memory
a
ure
(maybe the memory ban
on the DIMMC slo
broken
4S-2S-4S
Protected mode interrupt
failure
1S-3S-4S
Assistant interrupt mas
register failure
4S-3S-1S
emory
a
ure
memory
bank broken or RAM setting
failure
1S-4S-1S
ome a
ress o
ase
memor
failure
4S-3S-3S
e secon
c
oc
o
sys
em
failure
1S-4S-2S
ar
y c
ec
o
sys
em
base memory (the firs
64k
failure
4S-3S-4S Real-time clock failure
1S-4S-3S EISA BUS timer failure 4S-4S-1S
er
a
por
s
por
,
mouse
ort
failure
1S-4S-4S EISA NMI port failure 4S-4S-2S
ara
e
por
s
or
por
failure
2S-1S-1S
ys
em
ase memory
(the first 64k) chec
failure
4S-4S-3S
g
a
coprocessor
,
80287, 80387, 80487 )
failure
L: Long Beep
S: Short Bee
10. Common Problems & Solutions
1) Failures & Solutions (Note: Make all treatments after shutting down the
power)
Problems Reasons Suggested Solutions
Memory bank
emory
an
no
p
ugge
well
Plug it again
Memory bank broken Try replacing the memory bank
e
o
om o
memory
an
dirt
pe
y ru
er or c
ean
y pure
ethanol
then tr
a
ain
o
ma
c
ng w
o
er
memor
banks
Use matching memory banks
Memory slot Slot dirty and impure Clean the dirt or impurities
29
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