NEC POWERMATE PROFESSIONAL 9000 Service Manual page 270

The default logical head number is set to 16 as follows (see Table B-2):
Jumper Position
I G
H
I G
H
I G
H
I G
H
IBM Deskstar 6.4-GB Hard Disk
The default logical head number is set to 16 as follows (see Table B-3):
Jumper Position
I G
H
I G
H
I G
H
I G
H
Table B-2 IBM Deskstar 8.4-GB Logical Head
Number 16 Jumper Settings
E C A
F D B
E C A
F D B
E C A
F D B
E C A
F D B
Table B-3 IBM Deskstar 6.4-GB Logical Head
Number 16 Jumper Settings
E C A
F D B
E C A
F D B
E C A
F D B
E C A
F D B
Jumper Settings
Description
Device 0 (default)
Device 1
Cable select
Device 0 (forcing
device 1 present)
Description
Device 0 (default)
Device 1
Cable select
Device 0 (forcing
device 1 present)
B-7