Clear Cmos Procedures - Biostar TZ77A Setup Manual

Motherboard Manual
JCMOS1: Clear CMOS Header
Placing the jumper on pin2-3 allows user to restore the BIOS safe setting and
the CMOS data. Please carefully follow the procedures to avoid damaging the
motherboard.

※ Clear CMOS Procedures:

1. Remove AC power line.
2. Set the jumper to "Pin 2-3 close".
3. Wait for five seconds.
4. Set the jumper to "Pin 1-2 close".
5. Power on the AC.
6. Reset your desired password or clear the CMOS data.
J_COM1: Serial Port Connector
The motherboard has a Serial Port Connector for connecting RS-232 Port.
18
1
Pin 1-2 Close:
Normal Operation (default).
1
Pin 2-3 Close:
1 3
Clear CMOS data.
Pin
1
2
3
4
5
6
7
2 1 0
8
9
10
1 9
3
3
Assignment
Carrier detect
Received data
Transmitted data
Data terminal ready
Signal ground
Data set ready
Request to send
Clear to send
Ring indicator
NC