w w w . d e l l . c o m s u p p o r t . d e l l . c o m

Tab l e 9 - 6 . J 1 3 D i r t y C ac h e L E D P i n ou t

Pin Description

1Signal pulled high

2Dirty cache signal

J14 SCSI Activity LED

J14 is a four-pin connector for an LED mounted on the computer enclosure. Table 9-7 displays the J14 pinout.

Ta b l e 9 - 7 . J1 4 S C S I A c t i v i t y P i n o u t

Pin

Description

 

 

1

VCC

 

 

2

SCSI activity signal

 

 

3

SCSI activity signal

 

 

4

VCC

 

 

J16 and J18 TERMPWR Enable

J16, and J18 are 2-pin connectors that enable termination power to the SCSI bus for each SCSI channel. The default is pins 1 and 2 jumpered. Table 9-8 displays the settings for J16 and J18.

Ta b l e 9 - 8 . J1 6 a n d J1 8 T E R M P W R E n a bl e S e t t i n g s

Jumper

Termination

Settings

 

Power

 

 

Channel

 

 

 

 

J16

0

Short pins 1-2 to have the PCI bus on the host

 

 

computer provide TermPWR. This is the default

 

 

setting. Leave open to let the SCSI bus provide

 

 

TermPWR.

 

 

 

J18

1

Short pins 1-2 to have the PCI bus on the host

 

 

computer provide TermPWR. This is the default

setting. Leave open to let the SCSI bus provide TermPWR.

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PERC 3/DC or PERC 3/DCL Hardware Installation

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Dell manual J14 Scsi Activity LED, J16 and J18 Termpwr Enable, Tab l e 9 6 . J 1 3 D i r t y C ac h e L E D P i n ou t