Specifications
Page 25Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade
11.034-PIN X-BUS CABLING PRECAUTIONS
Up to this point, the installation instructions for AM-172 and AM-174 Roadrunner boards
have been exactly the same. However, the installation of the 34-pin X-bus cables is
not the same. This difference becomes important in configurations where an AM-172
(030 based) Roadrunner board is being replaced with an AM-174 (040 based) board. If
you remove your Roadrunner 030 board and replace it with an 040 board and then plug
the X-bus cables into the 040 board exactly as they were in the 030 board, your
computer will not boot. If you are performing an 030 to 040 upgrade, completely
remove both 34-pin X-bus cables from your computer and reinstall them using the the
X-bus cabling instructions for the Roadrunner (AM-174) 040 board.
11.1AM-172 to AM-986 34-Pin X-bus Cabling Instructions
The AM-986 and AM-172 boards are linked together with two 34-pin cables included in
the installation kit. These two cables make up the data path between the X-bus
connectors on the AM-986 and AM-172 boards. One of the cables connects the P2
connector on the AM-986 board to the J5 connector on the AM-172 board; the other
cable connects the P1 connector on the AM-986 board to the J6 connector on the
AM-172 board. When plugging in the two cables, make sure the embossed arrow on the
cable connectors aligns with the pin-1 on the connectors on the AM-172 and AM-986
boards.
No power is conducted over either of the two 34-pin cables, so no damage will occur if
you accidentally reverse these cables. However, if the cables are not plugged in
correctly, the system will not boot or run self-test. If your computer does not boot after
doing the upgrade, turn off the power and double check your cable connections.
PDI-00172-40, Rev. A05