Jumper Settings; Lan Jumper Settings; Fan Jumper Settings; Riser Board Jumper Locations - NEC POWERMATE 5100 Service Manual

Jumper Settings

The riser board contains two 3-pin jumper blocks: LAN JP4 and fan JP5. The
following figure shows the locations of the jumpers on the two jumper blocks.
The jumper settings are given in the tables following the figure.
A – LAN Enable/Disable (JP4)

LAN Jumper Settings

The LAN jumper block JP4 enables or disables the onboard 3COM LAN.
Enabling the LAN allows use of the onboard LAN. Disabling the onboard LAN
permits use of an optional network board.
Function
Enable
Disable

Fan Jumper Settings

The fan jumper block (JP5) permits the connection of a two-wire fan or a three-
wire fan. The jumper settings are as follows.
Function
2-Wire
3-Wire

Riser Board Jumper Locations

LAN Jumper Block JP4 Settings

Jumper Pins
1-2
2-3

Fan Jumper Block JP5 Settings

Jumper Pins
1-2
2-3
B –Fan Select (JP5)
Description
Enables onboard LAN (factory default)
Disables onboard LAN
Description
Setting for 2-wire fan (factory default)
Setting for 3-wire fan
Riser Board 5-25