Service manual

GS80 Component Removal and Replacement 6-37
Removal
1. If the operating system is still running, shut it down.
2. Put the OCP switch into the Off position.
3. Open the front and rear doors of the cabinet.
4. Trip the main circuit breaker on the target AC input box.
5. Unplug the main power cord from the utility power.
6. Unplug the power cords leading to power subracks, PCIs, and storage devices.
Note the location of all power cords. To gain access to the back of the AC
input box, you may have to move to the front of the cabinet and remove the
plastic filler guards at the bottom. To remove the filler, pinch the plastic
snaps at both ends of the guard and pull it from away from the frame.
7. Loosen the Phillips head screw holding the right side of the cable keeper arm
on the frame just below the AC input boxes. (The main power cable goes
under it.) Swing the arm away from the frame.
8. Remove the four Phillips head screws holding the AC input box to the frame
and slide the box out of the cabinet.
Replacement
Reverse the steps outlined in the removal procedure.
Refer to Appendix A for power cord locations.
Verification
Power up the system. If you tripped the AC circuit breaker, be sure to put the circuit
breaker in the on position before you put the OCP keyswitch in the On position.