Jumper Information; Changing Jumper Settings; Configuring Main Board Jumpers; Table 40. Main Board Jumpers - Dell 3250 Product Manual

Jumper Information

This section provides general information on changing jumper settings as well as specific jumper
configuration for individual boards in the system.

Changing Jumper Settings

To change a jumper setting:
1. Observe the safety and ESD precautions described in Warnings and Cautions.
2. Turn off all connected peripherals.
3. Power down the system by pressing and holding for several seconds the power button on the
front of the chassis.
4. After the server shuts down, unplug both AC power cords to remove standby power from the
server.
5. Open the chassis and access the board with the appropriate jumper. Locate the configuration
jumper blocks on the board. For specific jumper block locations, refer to the remaining
sections in this chapter.
6. Move jumper to pins specified for the required setting. For specific jumper block settings, see
Table 40.
7. Reinstall any boards or components that you removed in order to access jumper blocks.

Configuring Main Board Jumpers

There are nine jumper blocks called out on the main board. See Figure 78. The primary functions
of these jumper blocks are as follows:
Table 40. Main Board Jumpers
Jumper
J1A1
J1A2
J3A3
J3B1
J6G2
J5H4
J5H3
J5H2
J5H1
(RSRL_MODE0) Used to set Serial Port mode. Default is 1-2 on both.
(RSRL_MODE1) Used to set Serial Port mode. Default is 1-2 on both.
(SMM_BB_UNPROT_L) Jumper 2-3 to enable programming of the BMC boot block.
Default is 1-2.
(JTAG chain TDI/TDO) JTAG signal routing. Default is 3-4, 5-6, and 7-8 to include SNC-
M, SIOH (on the PCI Riser board), Processor 2, then Processor 1.
(FWH20_ID1_SWAP_L) Swaps North Bridge FWH ID0 and ID2.
BMC Force Update Pin 1-2 default
Clear CMOS Pin 1-2 default
Clear Password
RCV Boot (Recovery)
Signal / Description
209