Setting Of Switches And Jumper Plugs On Board - Sony GY-2120WD Maintenance Manual

1-3. Setting of Switches and Jumper Plugs on Board

1-3. Setting of Switches and Jumper
Plugs on Board
IF682/683 board
Switches on IF-682/683 board
. S201
This switch (4-pin DIP switch) is used during factory
setting.
Factory setting: All OFF
. S202
This switch (8-pin DIP switch) is used during factory
setting.
Factory setting: All OFF
. JP101
This jumper plug is used to select the term power output
of SCSI.
ON SHORT: Term power output ON
OFF SHORT: Term power output OFF
Factory setting: ON SHORT
1-8
A B
JP101
ON OFF
C D
JP103
JP102
CN103
S202
S201
. JP102 and JP103
These jumper plugs are used to select the SCSI chip
mode and firmware.
The firmware is selected by the setting below.
JP102 JP103
SHORT OPEN For GY-2120WD/2120WS
OPEN SHORT For DMS-B9WD/B9WS
Factory setting:
JP102 JP103
SHORT OPEN
GY-2120WD/WS