Service manual

Booting the Standalone IOS Rack

To successfully boot the standalone IOS rack and for the system to recognise the card count,

the following procedure is necessary:

Power down the SPS rack, the Master IOS rack (if present) and any standalone IOS

racks.

Set the SPS control card (SUN820-200) or TranSCSI card (SUN820-089) to boot

from LINK (there is a small switch on the front of the SPS control card, on the TranSCSI

card it is dip switch 4 of 4, the one nearest the front of the card).

Power up all the IOS racks.

Power up the SPS rack.

Wait until the ADC's in the standalone IOS rack have calibrated i.e. you can hear the relays

click.

Set the SPS control card or TranSCSI card back to boot from ROM.

Send in a "reset console" via Service Control. (In Flash systems send in an Upgrade

Flash, then a normal Flash boot when prompted).

Open Desk Explorer, connect to the desk and check the recognition of the standalone

IOS rack in IOS Runtime Debug (for example "IOS ADC Cards present FFF Port : 0"

means port 0 has found 12 ADCs).

Digital Service Manual

Issue 3 Page 10