Intergraph TD-300 Maintenance Manual page 71

To install the new system board:
The new system board should have the SIMMs and WRAM module (if
required) installed before placing it into the base unit.
1. Lower the new system board into the base unit. Ensure the standoff
lines up with the hole in the chassis. Slide the system board to the
back of the base unit so the external ports fit into the back panel.
2. Install the jackscrews onto the video, parallel, and serial ports.
3. Install the hex nuts onto the audio jacks.
4. Install the eight grounding screws.
5. Connect the MIDI (or game), audio, and Ethernet AUI cables to the
system board.
Do not connect the MIDI or game cable to the Ethernet AUI port. This
will short out the local area network on which the system resides.
6. Connect the system power cables to the P1 through P5 connectors.
The power cable connectors are labeled with the corresponding
system board connector.
7. Connect the reset, disk activity LED, and power on LED cables to the
system board.
Note: The orange wire for the disk activity LED cable must connect to pin
1. The white wire for the power on LED cable must also connect to
pin 1. The orientation of the reset cable wires is not critical.
8. Install the riser card and the peripheral brace.
Chapter 4 - Maintaining the System
CAUTION
57