Intergraph Zx10 Ultra-Tower, System Manual

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4. Note the airflow direction of the new fan (into the chassis) and the position the fan correctly
on the chassis.
5. Replace the screws removed previously to secure the fan to the chassis.
6. Connect the fan’s power cable to its power supply connector.
7. Replace the cooling duct. Pop the duct into its catches on the rear fan housing.
System Board
See previous procedures in this chapter
when necessary. See the System Board
Manual for connector and socket locations.
To remove the existing system board:
WARNING The system is always on
when connected to AC
power. Before performing
this task, disconnect the
system’s power cord from
its AC power outlet.
1. Remove the top cover. See Chapter 7,
“Gaining Access to System
Components.”
2. Note where all cables are connected to
the system board, and then disconnect them from the system board.
3. Note where expansion cards are installed, and then remove them, placing them on an antistatic
surface.
4. Remove the DIMMs, the processor modules, and the processor bus terminator (if installed),
and place them on an antistatic surface.
5. Remove the nuts from the processor retention clips, and then remove the clips from the system
board.
6. Remove the 13 screws from the system board.
7. Lift the system board out of the base unit and place it on an antistatic surface.
To install a new system board:
WARNING The system is always on when connected to AC power. Before performing this
task, disconnect the system’s power cord from its AC power outlet.
1. Connect the power switch/LED cable to connector J24 before installing the new system board.