Cisco UCS C890 M5, Инструкция по эксплуатации

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Contents Page 81
CMOS Clear
JBT1 is used to clear the CMOS. Instead of pins, this "jumper" consists of contact pads to
prevent the accidental clearing of the CMOS. To clear the CMOS, use a metal object such as a
small screwdriver to touch both pads at the same time to short the connection. Always remove
the AC power cord from the system before clearing the CMOS.
Note 1: For an ATX power supply, you must completely shut down the system, remove the AC
power cord, and then short JBT1 to clear the CMOS.
Note 2: Be sure to remove the onboard CMOS Battery before you short JBT1 to clear the
CMOS. Clearing the CMOS will also clear any passwords.
Do not use the PW_ON connector to clear CMOS.
Manufacturer Mode Select
Close pin 2 and pin 3 of Jumper JPME1 to bypass SPI flash security and force the system to
operate in the Manufacturer mode, allowing the user to flash the system firmware from a
host server for system-setting modifications. Refer to the table below for jumper settings.
ME Mode Select Jumper Settings
Jumper Setting Definition
1-2 Normal (Default)
2-3 Manufacturer Mode
Watch Dog Enable/Disable
Watch Dog (JWD1) is a system monitor that can reset the system when a software application
hangs. Close pins 1-2 to reset the system if an application hangs. Close pins 2-3 to generate a
non-maskable interrupt signal for the application that hangs. Refer to the table on the below
for jumper settings. Watch Dog must also be enabled in the BIOS.
Watch Dog Jumper Settings
Jumper Setting Definition
Pins 1-2 Reset (Default)
Pins 2-3 NMI
Open Disabled