IBM 5000 manual Changing Jumper Positions, Two-Pin Jumper Blocks

Changing Jumper Positions

Changing Jumper Positions

The DASD backplane, which is the Netfinity 5000 SCSI backplane, contains two jumper blocks, which are behind the daughterboard (SAF-TE) on the DASD backplane. Jumper block J4 controls the addressing of the SCSI hard d hot-swap bays. See “SCSI Jumpers” on page 173 for details.

Two-Pin Jumper Blocks

Covering	both	pins with		a	jumper specifies one function of the jumper
Covering	one	pin	only or	removing the jumper		entirely changes the	functio
jumper	block.	To	change	a	jumper's position	for a two-pin jumper	block:

1. Turn off the server; then disconnect the server power cord.

2. Remove the server cover (see “Preparing to Install Options” on page

3.Locate the jumper block, removing any adapters or components that ma hinder access to the jumper block.

4. Do one of the following:

Ÿ Remove		a	jumper by			performing		either action:
–	Lift	the		jumper		straight off the pin block.
–	Align	one		of	the	holes	in	the bottom	of the	jumper with	one
	on the		pin		block,	and	then	slide the	jumper	onto that pin	only

Ÿ Place	a	jumper	by	aligning	the	holes in the bottom of	the	jumper
two	pins	on the	pin	block,	and	then sliding the jumper	onto	these

5. Replace any components or adapters that you might have removed.

6.Reinstall the server cover and connect the cables (see “Completing t Installation” on page 76 for instructions).

172 Netfinity 5000 Server Hardware Information and Procedures