Specifications
JXT6966 / JXTS6966 Technical Reference
CHASSIS PLANS
1-14
Post Code LEDs 0 - 7
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). Refer to the board layout diagram for the exact location of the POST code LEDs.
These POST codes may be helpful as a diagnostic tool. After a normal POST sequence the LEDs are off
(00h) indicating that the SHB’s BIOS has passed control over to the operating system loader typically at
interrupt INT19h. Specific test codes and their meaning along with the following chart are listed in
Appendix A and can be used to interpret the LEDs into hexadecimal format during POST.
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
System BIOS Setup Utility
The JXT6966 and JXTS6966 feature the Aptio® 4.x BIOS from American Megatrends, Inc. (AMI) with a
ROM-resident setup utility called the Aptio Text Setup Environment or TSE. The TSE setup utility allows
you to select to the following categories of options:
Main Menu
Advanced Setup
Boot Setup
Security Setup
Chipset Setup
Exit
Each of these options allows you to review and/or change various setup features of your system. Details of
the Aptio TSE are provided in the separate
JXT6966 / JXTS6966 BIOS Technical Reference
manual. The
BIOS and hardware technical reference manuals are available under the
Downloads
tab on the JXT6966 or
JXTS6966 web pages.
Lower Nibble
7 6 5 4 3 2 1 0
Upper Nibble
JXT6966 & JXTS6966 POST Code LEDs
Содержание JXT6966
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