User guide

SC3500 User Guide Ver 1.3 March 8, 2005 Page 23 of 28
6. INSTALLATION
6.1 Default Configuration
By default, no jumpers are installed on the jumper block at the front (LED) side of
drive, and no switch positions on the switch block, accessed from the bottom of the
drive, are set to the on position. This configures the drive as follows:
DEFAULT JUMPER AND SWITCH CONFIGURATION
o SCSI ID 0, controlled by switch block
o Write Protect disabled
o Termination disabled
o Termination power sourced by cable
o Parity enabled
Always power down the unit before changing the any jumper or switch settings.
Changing these settings with power applied may result in the changes not being
recognized or worse, damage to the drive.
Note that some settings are controlled by both the jumper block (at the LED end of the
drive) and the DIP switch located on the under side of the drive. A setting is made
active (low) at either location. To deactivate a control, it must be deactivated (jumper
off and switch set to off) at both locations.
See section 5 for a detailed description of the jumper and switch block and their
locations.
6.2 Hardware Installation Procedure
6.2.1 Verify that the drive is configured as required by the application. Many SCSI
controllers require that the system disk be addressed as device 0 or 1 on the
SCSI bus. If a different ID is required, refer to section 5 for proper switch
settings.
6.2.2 Power off the computer system by throwing the main power switch.
6.2.3 Disconnect the AC power cord from the computer system.
6.2.4 Open the system to allow access to the drive bays and the card slots as
required.
6.2.5 If a SCSI initiator is not already installed in the system or on the motherboard,
then install that card.
6.2.6 Install the SC3500 into a standard 3 1/2" drive bay, or using adapter hardware,
place the unit into a 5 1/4" drive bay. Any mounting orientation is acceptable.
6.2.7 Attach the 50-pin flat ribbon connector from the SCSI initiator to the SC3500. If
multiple devices are to be attached to the SCSI bus, then remove any
terminating resistors or disable active termination on those units not at the END
of the cable. Only the two devices at the ends of the SCSI bus should have