Replacing The Rtu Assembly - Sun Microsystems Fire E6900 Systems Service Manual

4.3.2

Replacing the RTU Assembly

1. Notify users that the system will be powered off.
2. Power off the system.
3. Power off the wall circuit breaker connected to the RTS module(s) that are to be
removed.
4. Label and remove all cabling.
5. Remove the RTS module(s), see previous section.
Note – Do not attempt to remove the RTU without first removing the RTS modules.
6. Remove the four screws holding the RTU to the cabinet (
7. Firmly pull out the RTU.
8. Install the replacement RTU Assembly by reversing Step 1 through Step 6.
The assembly is self-aligning.
).
FIGURE 4-13
Chapter 4 Power 4-17