Cmos Clear; System Board Jumper Block Locations; Cmos Clear Jumper Jp18 Settings - NEC POWERMATE CT 815 Service And Reference Manual

A – CMOS Clear (JP18)
B – BIOS Recovery (JP15)
C – Rear USB Device Wake Up (JP1)
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.
Function
Normal
CMOS Clear
power is on.

System Board Jumper Block Locations

D – PS/2 Keyboard Power On (JP3)
E – Front USB Keyboard Wake Up (JP31)
F – Save to RAM (JP4)
To prevent damage to the system board, do not set jumpers while

CMOS Clear Jumper JP18 Settings

Jumper Pins Description
1-2 Factory setting. Maintains system board configuration in
CMOS RAM with onboard battery.
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
System Configuration 2-5