Installing the Drive
Chapter 4
Technical Reference Manual
Page 35
Setting the Bus Termination - CFP4207S
This drive provides on-board Alternative 2 active termination for the SCSI bus.
The termination resistors, which are contained in two Single Inline Packs (SIPs)
should be removed from the drive unless it is a SCSI device at the physical end
of the bus. Figure 4-4 shows the location of the terminator resistors.
Figure 4-4
Terminator Resistor Locations
J3
J1
J4
J2
E8
SS
LED
J5
Remove to
Disable TERMPWR
Input/Output
SCSI Terminators.
Remove in all but the last
drive in the chain
2107_4_4
F1
TERMPWR
Fuse
J7
NOTE: The TERMPWR output of the drive is protected by a 1.5 Ampere fuse.
If external terminators are being powered from the drive and SCSI bus
problems are suspected, verify that the fuse is still operational using a
meter.
