Removing And Replacing System Fans - Dell PowerEdge 1750 Installation And Troubleshooting Manual

7. Install the ROMB backup battery:
a. Position the battery board as shown in Figure 6-11, and press it down into the two standoffs until it snaps into place.
b. Plug the battery cable into the RAID BATTERY connector on the system board.
8. If you removed a PCI card in step 4, replace it. See
9. Close the system covers. See
10. Reconnect the system and peripherals to their power sources, and turn them on.
11. Enter the System Setup program and verify that the setting for the SCSI controller has changed to reflect the presence of the RAID hardware. See
"Using the System Setup Program" in your User's Guide.
12. Install the RAID software. See the ROMB card software documentation for more information.
Removing a ROMB Card
CAUTION: Before you perform this procedure, you must turn off the system and disconnect it from its power source. For more information, see
"Safety First—For You and Your
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See
your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against
electrostatic discharge.
NOTICE: To avoid possible data loss, back up all data on the hard drives before changing the mode of operation of the integrated SCSI controller from
SCSI to RAID.
1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system covers. See
3. If a PCI card is installed over the ROMB card, remove the PCI card. See
4. Pull the ROMB card up out of the four standoffs. See Figure 6-11.
5. Disconnect the ROMB backup battery from the backup battery connector, and pull the battery assembly up out of the two standoffs. See Figure 6-11.
6. Close the system covers. See

Removing and Replacing System Fans

The five system-board cooling fans and two power-supply cooling fans must be installed and operational at all times. See Figure 6-12. A blinking amber LED
next to a fan power connector indicates a faulty fan that needs to be replaced.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See
your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against
electrostatic discharge.
NOTICE: The fans are hot-pluggable. If a fan fails, replace it as soon as possible. Operating the system with a failed fan may cause the system to
overheat and lock up.
1. Open the system covers. See
2. Locate the faulty cooling fan(s) with the blinking amber LEDs.
"Installing an Expansion
"Closing the System Covers" in "Troubleshooting Your System."
System" in "Troubleshooting Your System."
"Opening the System Covers" in "Troubleshooting Your System."
"Closing the System Covers" in "Troubleshooting Your System."
"Opening the System Covers" in "Troubleshooting Your System."
Card."
"Removing an Expansion Card."