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Clear CMOS (JP7)
JP7 is used to clear CMOS data. Clearing CMOS will result in the permanent
erasing of previous system configuration settings and the restoration of original
(factory-default) system settings.
Pin 1-2 (Default)
Pin 2-3 (Clear CMOS)
Step 1.
Turn off the system power (PC-> Off).
Step 2.
Remove ATX Power cable from ATX Power connector.
Step 3.
Remove jumper cap from JP7 pins 1-2.
Step 4.
Place the jumper cap on JP7 pin 2-3 for a few seconds.
Step 5.
Return the jumper cap to pin 1-2.
Step 6.
Plug ATX Power cable into ATX Power connector.
Step 7.
Turn on the system power (PC-> On).
BIOS Write Protection (JP5)
JP5 is used to protect BIOS from abnormal writing.
You may choose to place jumper cap on pins 2-3 for BIOS write protection;
however, please place jumper cap on pins 1-2 if you need to reflash BIOS.
To enable reflashing
the BIOS
Pin 1-2 (Default)
BIOS write protection
Pin 2-3
Reflash the BIOS, follow these steps:
Step 1.
Turn off the system power (PC-> Off).
Step 2.
Make sure of place jumper cap on JP5 pin 1-2.
Step 3.
Insert a bootable system floppy disk with AK21 BIOS and
flashutility and then turn on your system to execute flash utility.
A6
A5
1
1
JP 7
1
1
JP 5
1
1
