NEC POWERMATE CT 815 - RELEASE NOTES, Service And Reference Manual, Page: 32 / 155

System Configuration 2-5
System Board Jumper Block Locations
A – CMOS Clear (JP18) D – PS/2 Keyboard Power On (JP3)
B – BIOS Recovery (JP15) E – Front USB Keyboard Wake Up (JP31)
C – Rear USB Device Wake Up (JP1) F – Save to RAM (JP4)
To prevent damage to the system board, do not set jumpers while
power is on.
CMOS Clear
CMOS Clear jumper block JP18 is a three-pin jumper block for restoring the CMOS settings to
the factory state. Descriptions for each JP18 jumper setting are provided in the following table.
CMOS Clear Jumper JP18 Settings
Function Jumper Pins Description
Normal 1-2 Factory setting. Maintains system board configuration in
CMOS RAM with onboard battery.
CMOS Clear 2-3 To clear CMOS, turn off the system, remove the jumper
from pins 1-2, and place the jumper on pins 2-3. Wait 10
seconds. Replace the jumper on pins 1-2 and power on
the system.
To prevent damage to the system board, do not clear CMOS while
power is on.