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Chapter 2
- Hardware Installation
SD170
14
►
Jumper Settings
Clear CMOS
JP4
▲
2-3 On: Clear CMOS
▲
1-2 On: Normal (default)
If any anomaly of the followings is encountered —
a) CMOS data is corrupted;
b) you forgot the supervisor or user password;
c) failure to start the system due to BIOS mis-configuration
— it is suggested that the system be reconfigured with default values stored in the ROM BIOS.
To load the default values stored in the ROM BIOS, please follow the steps below.
1. Power-off the system and unplug the power cord.
2. Put a jumper cap on JP9’s pin 2 and pin 3. Wait for a few seconds and set JP9 back to
its default setting, i.e. jumper cap on pin 1 and pin 2.
3. Plug the power cord and power-on the system.
1
1
3
3
2
2
Two internal COM ports support RS232 with power configured via jumper settings of JP17
(COM 3) and JP24 (COM 4).
Configure the RS232 power select setting by putting the jumper cap on the encircled neighbor-
ing pins to create a short circuit as illustrated below.
▲
Standard RS232 (default)
▲
RS232 with power
1
1
3
3
5
5
2
2
4
4
6
6
RS232 Power Select
Note:
Please refer to the I/O section later in this chapter for more information on the
COM ports.
JP17
JP24
COM 4
COM 3
