NAS 7800 User’s Manual
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Jumpers
Jumpers
Jumpers
Jumpers
The mainboard provides jumpers for setting some mainboard functions.
This section will explain how to change the settings of the mainboard
functions using the jumpers.
Clear CMOS Connector: CLEAR_CMOS
The onboard CMOS RAM stores system configuration data and has an
onboard battery power supply. To reset the CMOS settings, set the
jumper on pins 1 and 2 while the system is off. Return the jumper to
pins 2 and 3 afterwards. Setting the jumper while the system is on will
damage the mainboard.
Setting
Setting
Setting
Setting
1
1
1
1
2
2
2
2
3
3
3
3
Normal Operation
ON
ON
OFF
Clear CMOS setting
OFF ON
ON
Caution:
Caution:
Caution:
Caution:
Except when clearing the RTC RAM, never remove the cap on
CLEAR_CMOS jumper default position. Removing the cap will cause
system boot failure. Avoid clearing the CMOS while the system is on;
it will damage the mainboard.
CF Mode Selector: J1
J1 is the working mode selector for CF Type I connector.
Short = Master, Open = Slave.
Setting
Setting
Setting
Setting 1
1
1
1
2
2
2
2
Master
ON
ON
Slave
OFF OFF
COM1 Power Selector: J2
J2 is a VCC selector jumper to determine the input voltage for COM1
connector.
Setting
Setting
Setting
Setting
1
1
1
1
2
2
2
2
3
3
3
3
+5V
ON
ON
OFF
+12V
OFF
ON
ON
Normal
Normal
Normal
Normal
Clear
Clear
Clear
Clear
Slave
Slave
Slave
Slave
Master
Master
Master
Master
+5V
+5V
+5V
+5V
+12V
+12V
+12V
+12V
Summary of Contents for NAS 7800
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Page 30: ...NAS 7800 User s Manual 22 22 22 22...
