HP Visualize J5000 hp Visualize J5000, J7000 workstations service handbook (a4 - Page 109

System Board Cooling Fans

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Field Replaceable Units (FRUs) FRU Removal and Replacement System Board Cooling Fans There are three system board cooling fans located behind the left side of the workstation's front panel. This section describes how to remove and replace them. NOTE If the LCD displays an error message that relates to a turbocooler fan on a microprocessor mounted on the system board, you will need to replace the entire system board tray assembly. Follow the removal and replacement procedures in the section titled "System Board Tray Assembly" on page 102. Removing a System Board Cooling Fan To remove a system board cooling fan, do the following: 1. Remove the top panel and the left side panel of the workstation. 2. If you are removing a system board cooling fan from a J7000 workstation, you must also remove the front and rear air dividers and the two DC/DC converter units that are attached to the J7000's system board. To do this, follow the removal procedures in the section titled "DC/DC Converter Units and Air Dividers (J7000 Only)" on page 101. 3. Disconnect the appropriate fan cable from the system board. 4. Each fan is attached to the inner fan wall by four plastic rivets. Using your index finger, press on each rivet from the front side of the workstation to relieve the back side of the plastic rivets from the rivet inserts. (You may need to remove the DDS-3 tape drive or floppy disk drive to access the rivets on the top fan.) 5. Push the fan toward the front to release it from the rivets. Replacing a System Board Cooling Fan To replace a system board cooling fan, do the following: 1. Position the fan so that the flow arrow on the fan points toward the rear of the workstation. 2. Locate the fan cable's guide slot in the sheet metal and thread the cable accordingly. 3. Hold the fan in position flush to the inner sheet metal while aligning the fastener holes. 4. Separate a new rivet pin from the insertion barrel. Guide the insertion barrel into the fan fastener hole from the center of the workstation. Press the rivet pin into the barrel which is held in place by the chassis inner wall and the fan housing. Repeat for the other three rivet pins. 5. Connect the fan cable to the system board. 6. If you are replacing a system board cooling fan in a J7000 workstation, you must also replace the two DC/DC converter units that are attached to the J7000's system board, as well as the front and rear air dividers. To replace these components, follow the replacement procedures in the section titled "DC/DC Converter Units and Air Dividers (J7000 Only)" on page 101. 7. Replace the top panel and the left side panel of the workstation. Chapter 4 105

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Chapter 4
105
Field Replaceable Units (FRUs)
FRU Removal and Replacement
System Board Cooling Fans
There are three system board cooling fans located behind the left side of the workstation’s
front panel. This section describes how to remove and replace them.
NOTE
If the LCD displays an error message that relates to a turbocooler fan on a
microprocessor mounted on the system board, you will need to replace the
entire system board tray assembly. Follow the removal and replacement
procedures in the section titled “System Board Tray Assembly” on page 102.
Removing a System Board Cooling Fan
To remove a system board cooling fan, do the following:
1.
Remove the top panel and the left side panel of the workstation.
2.
If you are removing a system board cooling fan from a J7000 workstation, you must also
remove the front and rear air dividers and the two DC/DC converter units that are
attached to the J7000’s system board. To do this, follow the removal procedures in the
section titled “DC/DC Converter Units and Air Dividers (J7000 Only)” on page 101.
3.
Disconnect the appropriate fan cable from the system board.
4.
Each fan is attached to the inner fan wall by four plastic rivets. Using your index finger,
press on each rivet from the front side of the workstation to relieve the back side of the
plastic rivets from the rivet inserts. (You may need to remove the DDS-3 tape drive or
floppy disk drive to access the rivets on the top fan.)
5.
Push the fan toward the front to release it from the rivets.
Replacing a System Board Cooling Fan
To replace a system board cooling fan, do the following:
1.
Position the fan so that the flow arrow on the fan points toward the rear of the
workstation.
2.
Locate the fan cable’s guide slot in the sheet metal and thread the cable accordingly.
3.
Hold the fan in position flush to the inner sheet metal while aligning the fastener holes.
4.
Separate a new rivet pin from the insertion barrel. Guide the insertion barrel into the
fan fastener hole from the center of the workstation. Press the rivet pin into the barrel
which is held in place by the chassis inner wall and the fan housing. Repeat for the
other three rivet pins.
5.
Connect the fan cable to the system board.
6.
If you are replacing a system board cooling fan in a J7000 workstation, you must also
replace the two DC/DC converter units that are attached to the J7000’s system board,
as well as the front and rear air dividers. To replace these components, follow the
replacement procedures in the section titled “DC/DC Converter Units and Air Dividers
(J7000 Only)” on page 101.
7.
Replace the top panel and the left side panel of the workstation.