Ÿ Record the following information for future reference:
Drive model __________________________________________________
Drive part number _____________________________________________
Drive serial number ____________________________________________
Date of purchase ______________________________________________
Place of Purchase _____________________________________________
Configure the jumper settings
Option jumper blocks
The drive has features that are usually enabled by the use of jumpers. A jumper is a small plastic-
covered electrical conductor that connects a pair of pins on a jumper block, thereby enabling a particular
function in the drive. Jumpers can be purchased at most computer stores. See the illustration below for
the location of the two jumper blocks which are designated as J4 and J6. Jumper pins have a pitch of
2mm.
6
14121081412108
42
13 5 7 9
2
4
1 3
5
7 9 11
1
6
3
+5V
1
Resistor
(150 Ohm)
+5V
ID Bit 3 Reserved
J4
J6
J4 J6
Connected to 5V via Polyswitch
for 68-pin and NC for 80-pin
Disable unit
attention
TI sync negotiation
Disable Parity
Delay start 6/12
Auto start delay
Enable auto spin up
(68-pin models)
Disable auto spin up
(80-pin models)
ID Bit 2
ID Bit 1
ID Bit 0
Force Mode
Term power (SCSI I/F for 68-pin
models NC for 80-pin models)
To LED pin 8 Aux connector
(68-pin models)
To LED out pin 77
(80-pin models)
Resistor
68-pin = 150 Ohm
80-pin = 0 Ohm
To Resistor
IBM storage products
Page 7
IBM Technology Group Support Center 07N5612IG10
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