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Anleitung Zusammenfassung
d. Grasp the processor/heat sink assembly firmly, and pull it away from the guide bracket assembly assembly (see Figure 26). You must use up to 15 pounds of force to disengage the processor from the connector. Figure 26. Microprocessor Removal NOTE: After you remove and replace the cover, the chassis intrusion detector causes the following message to appear on the screen at the next system start-up: ALERT! Cover was previously removed. NOTE: If a setup password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector. CAUTION: The microprocessors can get extremely hot during system operation. To avoid dangerous burns, be sure that the microprocessors have had sufficient time to cool before you touch them. CAUTION: To avoid the possibility of electric shock, turn off the computer and any peripherals, disconnect them from their electrical outlets, and then wait at least 5 seconds before you remove the computer cover. NOTE: Dell recommends that only a technically knowledgeable person perform this procedure. CAUTION: Before you remove the computer cover, see "Precautionary Measures" NOTE: Before disconnecting a peripheral from the system or removing a component from the system board, verify that the standby power LED on the system board has turned off. For the location of this LED, see Figure 22. Figure 27. Microprocessor Replacement To insert the new microprocessor/heat sink assembly into the system board connector, perform the following steps (this procedure assumes the microprocessor removal procedure was just performed). 1. Press the processor firmly into its connector until it is fully seated. You must use up to 25 lb of force to fully seat the processor in its connector. 2. Install the two large thumbscrews that secure the heat sink to the system board. 3. Replace the airflow shroud. 1 Airflow shroud 2 Thumbscrews (2) 3 Processor/heat sink assembly 4 Guide bracket 5 Second processor 1 Airflow shroud 2 Thumbscrews (2) 3 Processor/heat sink assembly 4 Guide bracket 5 Second processor NOTE: Dell recommends that only a technically knowledgeable person perform this procedure. CAUTION: Before you remove the computer cover, see "Precautionary Measures" NOTE: Before disconnecting a peripheral from the system or removing a component from the system board, verify that the standby power LED on the system board has turned off. For the location of this LED, see Figure 22. 4. Rotate the power supply back into position, making sure that the securing tab snaps into place. 5. Replace the computer cover, and reconnect your computer and peripherals to their power sources and turn them on. 6. Enter System Setup and confirm that the top line in the System Data area correctly identifies the installed processor(s). 7. While in System Setup, select System Security, and reset Chassis Intrusion to Enabled or Enabled-Silent. 8. Run the Dell Diagnostics to verify that the new microprocessor is operating correctly. Cooling Fan Figure 28. Cooling Fan Removal To remove the cooling fan, perform the following steps. 1. Remove the computer cover. 2. Rotate the power supply. 3. Squeeze in on the two pairs of tabs on the airflow shroud and lift it away. 4. Disconnect the fan power cable from the FAN_SYS connector (see Figure 22 for location). 5. Gently pull on the plastic locking tab, and slide the fan toward the power supply to disengage the four latching tabs holding the fan to the back of the chassis (see Figure 28). Battery Figure 29. Battery Removal NOTE: After you remove and replace the cover, the chassis intrusion detector will cause the following message to be displayed at the next system start-up: ALERT! Cover was previously removed. NOTE: If a setup password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector. 1 Fan power cable 2 Fan 3 Plastic locking tab CAUTION: Before you remove the computer cover, see "Precautionary Measures" To remove the system battery, perform the following steps: 1. If possible, enter System Setup and print the System Setup screens. If the settings are lost while you are replacing the battery, you can refer to your written or printed cop of the system configuration information to restore the correct settings. 2. To access the battery on the system board, rotate the power supply as described in "Rotating the Power Supply." 3. If installed, remove the CD-ROM drive according to the instructions in "Diskette, LS-120 SuperDisk, Tape, or CD-ROM Drive Removal" to access the battery. 4. Locate the battery and remove it. The battery is mounted in a socket labeled "BATTERY" at the upper front-right corner of the system board (as you face the side of the system) (see Figure 22). NOTICE: If you pry the battery out of its socket with a blunt object, be careful not to touch the system board with the object. Make certain that the object is inserted between the battery and ...