SMO-F551 Technical Guide and Specifications
17
Sony Corporation 1998
Functional Switch Settings
The functional switch pin header is located in the upper left of the drive as seen from
the rear. These switches are used for setting the SCSI drive ID and other
configurations as shown in the table 2.1.
The drive uses a 2 mm pitch 24 pin (12 pairs) male header socket (DDK part number
DZF-PB24-R1031 or equivalent (Fig. 2.1)). The header is designed for use with 24
pin female connector (Molex part number 51110-24, 87259-2412 or equivalent).
Recommend jumper socket : IMSA-9215H-GF (IRISO Electronics Co. Ltd.)
1
12
A
B
Fig. 2.1 : Functional Switch
Placing a jumper socket over the desired pair of pins A#/B# will turn the corresponding
function ON. For example, placing a jumper socket over the pair of pins A4/B4 turn
"Disable SCSI Parity Check" function ON. (This means the SCSI Parity Check is
disabled.) No jumper socket means the function is OFF.
1
12
Fig. 2.2 : Functional Switch Usage
There is no jumper pin placed as factory default.
Caution: "Disable Write Cache" and "Disable Auto Spin-up" settings work as an "OR"
function with the optional dip switch settings.
