15 Servicing the Temperature Sensor (FRU)

The following section describes how to service the temperature sensor. The temperature sensor is a field-replaceable unit (FRU). For more information about FRUs, see Illustrated Parts Breakdown and Field-Replaceable Units.

Caution:

The temperature sensor must be removed and replaced only by authorized Oracle Service personnel.

Caution:

Ensure that all power is removed from the server before removing or installing the temperature sensor. You must disconnect the power cables before performing this procedure.

Caution:

These procedures require that you handle components that are sensitive to electrostatic discharge. This sensitivity can cause the component to fail. To avoid damage, ensure that you follow electrostatic discharge safety measures and antistatic practices. See Electrostatic Discharge Safety.

This section covers the following procedures:

• Remove the Temperature Sensor

• Install the Temperature Sensor

Troubleshooting Using the Server Front and Back Panel Status Indicators

Remove the Temperature Sensor

1. Prepare the server for service.
   1. Power off the server and disconnect the power cords from the power supplies.

      See Powering Down the Server.

   2. Extend the server into the maintenance position.

      See Extend the Server to the Maintenance Position.

   3. Attach an antistatic wrist strap to your wrist, and then to a metal area on the chassis.

      See Take Antistatic Measures.

   4. Remove the server top cover.

      See Remove the Server Top Cover.

2. Remove the fan modules and the fan tray.

   See Remove a Fan Module and Remove the Fan Tray.

3. Disconnect the temperature sensor cable from the disk backplane.
   
   
   
4. Remove the three No. 2 Phillips screws that secure the FIM cable and Temp Sensor Access cover to the chassis [1].
   
   
   
5. Lift up and remove the FIM cable and Temp Sensor Access cover from the FIM cable and Temp Sensor Access cover slot [2].
6. Set aside the FIM cable and Temp Sensor Access cover.
7. Remove the temperature sensor by carefully pulling the sensor cable rearward and through the cable trough along the left side of the chassis, and lift the temperature sensor from the chassis [3].

Install the Temperature Sensor

Install the Temperature Sensor

1. Install the temperature sensor by carefully inserting the sensor-end of the cable through the rear opening of the cable trough, and pull the cable through the opening and install it into the cable trough along the left side of the chassis [1].
   
   
   
2. Install the FIM cable and Temp Sensor Access cover to the chassis by inserting it into the FIM cable and Temp Sensor Access cover slot [2].
3. Install the three No. 2 Phillips screws to secure the FIM cable and Temp Sensor Access cover to the chassis [3].
4. Reconnect the temperature sensor cable to the disk backplane.
   
   
   
5. Install the fan tray and fan modules.

   See Install the Fan Tray and Install a Fan Module.

6. Return the server to operation.
   1. Install the server top cover.

      See Install the Server Top Cover.

   2. Return the server to the normal rack position.

      See Return the Server to the Normal Rack Position.

   3. Reconnect the power cords to the power supplies, and power on the server.

      See Reconnect Power and Data Cables and Power On the Server.

   4. Verify that the power supply AC OK LED is lit.

Remove the Temperature Sensor