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Refer to Section 4.3.2, “Verifying Hardware Operation” on page 4-9 for more information. Chapter 6 Storage Devices Replacement 6-33 6-34 SPARC Enterprise M4000/M5000 Servers Service Manual • December 2010 CHAPTER 7 Power Systems Replacement This chapter describes the power supply units and how to remove and replace them. This information is organized into the following topic: ¦ Section 7.1, “Power Supply Unit Replacement” on page 7-1 7.1 Power Supply Unit Replacement Power supply units are hot, active, or cold replacement components. When using active replacement, only one power supply unit should be replaced at a time to ensure redundancy. The power supply unit backplane is part of the backplane unit. See Section 14.1, “Backplane Unit Replacement” on page 14-1 for remove and replace procedures. FIGURE 7-1 FIGURE 7-1 E 7-1 M4000 Server Power Supply Unit Locations 2 1 Location Number Component 1 Power supply unit (PSU#0) 2 Power supply unit (PSU#1) SPARC Enterprise M4000/M5000 Servers Service Manual • December 2010 FIGURE 7-2 FIGURE 7-2 E 7-2 M5000 Server Power Supply Unit Locations 1 2 3 4 Location Number Component 1 Power supply unit (PSU#0) 2 Power supply unit (PSU#1) 3 Power supply unit (PSU#2) 4 Power supply unit (PSU#3) Chapter 7 Power Systems Replacement 7-3 7.1.1 7.1.1 . From the XSCF Shell prompt, use the replacefru command to disable the power supply to be removed. XSCF> replacefru The replacefru command is menu-driven. replacefru will continue while the power supply is removed and then it will test the power supply. Refer to Section 4.3.1, “Removing and Replacing a FRU” on page 4-7 for more information. 7.1.2 Removing the Power Supply Unit Caution – Use proper ESD grounding techniques when handling components. See Section 1.1, “Safety Precautions” on page 1-1. 1. Confirm the DC_OK LED is not lit. 2. If the DC_OK LED remains lit push a paperclip through the pin-hole to activate the standby switch. 3. Loosen the captive screw on the power supply unit (FIGURE 7-3). 4. Pull the handle down perpendicular to the server to unseat the unit. Note – Support the bottom of the unit with one hand to avoid the rear of the unit swinging and hitting the system as it is removed. 5. Pull the unit from the server and place it on the ESD mat. SPARC Enterprise M4000/M5000 Servers Service Manual • December 2010 FIGURE 7-3 Removing the Power Supply Unit 7.1.3 Installing the Power Supply Unit Caution – Do not force the power supply unit into the slot. Doing so can cause damage to the component and server. 1. Align the top of the unit against the top of the slot. This prevents clipping the power connectors at the bottom of the unit against the bottom of the slot. 2. With the handle perpendicular to the server, push the unit into the slot. 3. Lift the handle upwards all the way to seat the unit. 4. Tighten the captive screw on the power supply unit. 7.1.4 Securing the Server . From the XSCF Shell prompt, use the showhardconf command to confirm that the new power supply is installed. XSCF> showhardconf Refer to Section 4.3.2, “Verifying Hardware Operation” on page 4-9 for more information. Chapter 7 Power Systems Replacement 7-5 SPARC Enterprise M4000/M5000 Servers Service Manual • December 2010 CHAPTER 8 I/O Unit Replacement This chapter describes how to remove and install the I/O unit and PCI cassettes. The information is organized into the following topics: ¦ Section 8.1, “PCI Cassette Replacement” on page 8-4 ¦ Section 8.2, “PCI Card Replacement” on page 8-7 ¦ Section 8.3, “I/O Unit Replacement” on page 8-10 ¦ Section 8.4, “I/O Unit DC-DC Converter Replacement” on page 8-12 The I/O units are accessed from the rear of the server. The I/O unit backplane is part of the backplane unit. See Section 14.1, “Backplane Unit Replacement” on page 14-1 for remove and replace procedures. FIGURE 8-1 FIGURE 8-1 E 8-1 M4000 Server I/O Unit Location (Rear) 1 Location Number Component I/O unit (IOU#0) SPARC Enterprise M4000/M5000 Servers Service Manual • December 2010 FIGURE 8-2 FIGURE 8-2 E 8-2 M5000 I/O Unit Locations (Rear) 1 2 Location Number Component 1 I/O unit (IOU#1) 2 I/O unit (IOU#0) Chapter 8 I/O Unit Replacement 8-3 8.1 8.1 PCI cassettes are hot, active, or cold replacement components. FIGURE 8-3 shows the PCI cassette slot locations. FIGURE 8-3 PCI Cassette Slot Locations 4 3 2 1 5 Location Number Component 1 PCI cassette #1 (PCIe) 2 PCI cassette #2 (PCIe) 3 PCI cassette #3 (PCIe) 4 PCI cassette #4 (PCIe) 5 PCI cassette #0 (PCI-X) SPARC Enterprise M4000/M5000 Servers Service Manual • December 2010 Note – Do not install an I/O Box link card (or any PCIe card sensitive to timing delays) in the slot marked PCI cassette #1 in FIGURE 8-3. 8.1.1 Accessing the PCI Cassette Before you remove the PCI cassette, make sure that there is no I/O activity on the card in the cassette. Caution – Use proper ESD grounding techniques when handling components. See Section 1.1, “Safety Precautions” on page 1-1. . Remove the PCI cassette from the ...
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