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3. Explanation of Diagnostics & Stability-Test Card Indicator
LED Name Function Description
3V Power
pec
a
vo
age o
mo
er
oar
s
a
ave
slot. The indicator will be always on when power on.
Part of the motherboards that have PCI slot have no
3.3V voltage, so the indicator is off.
+12V Power
e
n
ca
or w
e a
ways on w
en power on，or
the motherboard does not have -5V voltage or there
is short circuit.
-12V Power
e
n
ca
or w
e a
ways on w
en power on，or
the motherboard does not have -5V voltage or there
is short circuit.
CLK BUS Clock
e
w
e on w
en
ere
s c
oc
s
gna
impulse, and will be off when there is no clock signal
impulse, no matter the current signal stays at high or
low level, which won’t mislead the user that there is
clock si
nal im
ulse.
RESET Reset
s norma
a
e
n
ca
or
g
s on
or a
a
second and then become off when start the
computer or press the RESET button. If the indicator
light is never off, usually it is because the Reset
Contact Pin on the main board is pinned to the
ccelerate Switch or the Rese
Circuit is dama
ed
Unstable
Indicator
Stability
Testin g
Result
Indicator
g
on
n
ca
or o
e
es
compu
er means
instability, potential failure or the accessories not
matchin
with the host.
a
e
Indicator
The test computer is stable, no potential failure.
4.Testing Status
Both Stable and Unstable indicators on -------- Failure analyzing
The Stable and Unstable indicators flash quickly and alternately - stability testing
The Stable and Unstable indicators flash slowly and alternately –internal data
processing of stability test
The Stable indicator on -------------------- stable
The Unstable indicator on ------------------ unstable
5.Notice
(1) Connection of RESET Line
Please make sure that the Reset Line (attached) of Diagnostics & Stability-Test
Card is well connected before usage. Plug the bigger terminal of the line in the
card and the smaller terminal in the RESET contact pin of the testing main board.
Plug the RESET line on the main board in the hole at the other end of this line if
you need to use RESET switch.
If the Reset Line that connect the Diagnostics & Stability-Test Card and main
board is not connected, only failure test will go on, and stability test will not. The
indicator light will mislead the user that the test computer is unstable.
(2) Power Cord of Hard Disk
Please remove the power cord from the hard disk before using Diagnostics &
Stability-Test Card, because the test computer has to be reset to change the test
circuit before starting stability test and avoid damage of data(system files) in the
hard disk caused by restarting. Starting the test without removing the power cord
from the hard disk means abnormal shutdown, and won’t cause any bad results.
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