JXT6966 / JXTS6966 Technical Reference
BIOS Messages
A-3
CHASSIS PLANS
BIOS Status Codes
As the POST (Power On Self Test) routines are performed during boot-up, test codes are displayed on Port
80 POST code LEDs 0, 1, 2, 3, 4, 5, 6 and 7. These LED are located on the top of the SHB, just above the
board’s battery socket. The POST Code LEDs and are numbered from right (position 1 = LED0) to left
(position 8 – LED7).
The POST code checkpoints are the largest set of checkpoints during the BIOS pre-boot process. The
following chart is a key to interpreting the POST codes displayed on LEDs 0 through 7 on the JXT6966
and JXTS6966 SHBs. Refer to the board layout in the
Specifications
chapter for the exact location of the
POST code LEDs.
The HEX to LED chart in the POST Code LEDs section will serve as a guide to interpreting specific BIOS
status codes.
BIOS Status POST Code LEDs
As the POST (Power On Self Test) routines are performed during boot-up, test codes are displayed on Port
80 POST code LEDs 0, 1, 2, 3, 4, 5, 6 and 7. These LED are located on the top of the SHB, just above the
board’s battery socket. The POST Code LEDs and are numbered from right (position 1 = LED0) to left
(position 8 – LED7).
The POST code checkpoints are the largest set of checkpoints during the BIOS pre-boot process. The
following chart is a key to interpreting the POST codes displayed on LEDs 0 through 7 on the JXT6966
and JXTS6966 SHBs. Refer to the board layout in the
Specifications
chapter for the exact location of the
POST code LEDs.
Upper Nibble (UN)
Lower Nibble (LN)
Hex.
Value
LED7
LED6
LED5
LED4
Hex.
Value
LED3
LED2
LED1
LED0
0
Off
Off
Off
Off
0
Off
Off
Off
Off
1
Off
Off
Off
On
1
Off
Off
Off
On
2
Off
Off
On
Off
2
Off
Off
On
Off
3
Off
Off
On
On
3
Off
Off
On
On
4
Off
On
Off
Off
4
Off
On
Off
Off
5
Off
On
Off
On
5
Off
On
Off
On
6
Off
On
On
Off
6
Off
On
On
Off
7
Off
On
On
On
7
Off
On
On
On
8
On
Off
Off
Off
8
On
Off
Off
Off
9
On
Off
Off
On
9
On
Off
Off
On
A
On
Off
On
Off
A
On
Off
On
Off
B
On
Off
On
On
B
On
Off
On
On
C
On
On
Off
Off
C
On
On
Off
Off
D
On
On
Off
On
D
On
On
Off
On
E
On
On
On
Off
E
On
On
On
Off
F
On
On
On
On
F
On
On
On
On
Lower Nibble
7 6 5 4 3 2 1 0
Upper Nibble
JXT6966 & JXTS6966 POST Code LEDs
Содержание JXT6966
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