Alpha Microsystems AM-6000 Service Manual download pdf (Page 20)

AM-6000 Service Manual Page 17

Rev. A02

There are a ribbon cable and a number of small wires extending between the front panel and the

display connector on the AM-319-20. Do not disconnect any of these wires; the wires are long

enough to allow you to lay down the AM-319-20 assembly on your work surface without having

to disconnect them.

With the AM-319-20 assembly out of the way, you will be able to access both sides of the

peripheral mounting bracket and have complete access to all six mounting positions.

To install a peripheral, simply slide it into one of the available mounting positions in your

chassis and install the four screws (two on each side) that hold the device in place.

Don't forget to attach the appropriate power and interface cables to your new peripheral.

After you have completed your peripheral installation, you can reinstall the AM-319-20

assembly.

The AM-319-20 side mounting bracket is an integral part of the chassis assembly. You may find

that with the bracket removed, the chassis may shift slightly, either forward or backward. To

reinstall the AM-319-20 mounting assembly, you can realign the chassis by placing one hand on

the top of the chassis and applying pressure either forward of backward. With the chassis

properly aligned, the board and its mounting assembly will slide into place.

X-Bus Cable Routing

When unfastening the AM-319-20 side mounting bracket, you should be able to lay the board assembly

down flat on the side of the chassis and out of the way without disconnecting the X-Bus cables.

However, if an X-Bus cable should come unplugged from either the AM-176 or the AM-319-20 board it

is extremely important that the cables are plugged back in correctly. If the cables are not correct the

system will not boot or run self test and one or both boards could be seriously damaged!

The X-bus cables must be connected as follows:

•

C/S bus cable into P6 on the AM-176 board and P8 on the AM-319-20 board

•

A/D bus cable into P4 on the AM-176 board and P7 on the AM-319-20 board

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Alpha Microsystems AM-6000 Service Manual Page 20