Service manual

Removal and Replacement 7-69
Removal
1. Remove the cabinet fan tray.
2. Disconnect the power harness from the fan fail detect module.
3. Remove the fan fail detect module. In early systems, the module is held in
place by three screws that go through the weldment, through three standoffs,
through the module to nuts. In later systems, the module snaps in place.
Replacement
1. Reverse the steps in the Removal procedure.
2. Place the fan tray back in the cabinet.
Verification
Power up the system. If the green power LED comes on, and the fan LED is off, the
cabinet fan fail detect module is verified.