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LinkNet

A.2

manual rev 2.1 March 25, 1999

Figure A.1:

System 1100 OIT Circuit Board

A.2.2 System 1100 Motherboard Software

Upgrade Procedure

Review section A.1 for chip changing rules!

Turn off the power to the System 1100.

Open the front door of the System 1100

enclosure.

Remove the five pan-head screws holding down

the channel 1 and 2 dual channel card (the card

in the bottom of the unit that has the channel 1

and channel 2 strain gauges plugged into it ).

Remove the channel card by pulling on the

handle on the card.

Using Figure A.2, locate the software chip on

the 1100-1 circuit board and remove it.

Install the new software chip labeled “1100-2-

MB” in the socket for a two channel unit, or the

chip labeled “1100-4-MB” for a four channel

unit. A 4 channel chip in a 2 channel

motherboard or a 2 channel chip in a 4 channel

motherboard will prevent the unit from working

correctly!

Install the Channel 1 and 2 dual channel card -

Be sure not to leave any lockwashers or screws

loose in the unit!

Restore power to the System 1100.

Make sure that the System 1100 resets. You

should see a screen that look similar to:

LINK SYSTEMS 1100

V2.7 OIT V2.5MB

on the LCD for about 5 seconds after power-up.

The main menu should then appear.

Figure A.2:

System 1100 Motherboard Circuit

Board

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