Service Source Xserve Xserve, Xserve (Slot Load), and Xserve (Cluster Node) Updated: 7 May 2003 © 2003 Apple Computer, Inc. All rights reserved.
Service Source Take Apart Xserve © 2003 Apple Computer, Inc. All rights reserved.
General Information Overview Xserve is a server designed to mount into a rack; Apple recommends that you remove the Xserve from the rack before replacing or installing all parts except hard drives. You can replace hard drives while the server is operating and still in the rack. There are three versions of the Xserve server. To identify the versions, check the front panel. The original Xserve includes a tray-load optical drive on the far right side; Xserve (Slot Load) includes a slot-load optical drive.
Mounting in a Rack For information on mounting Xserve in a rack, see the Xserve User’s Guide. Tools Many take-apart procedures do not require tools. You may, however, find a medium-sized flatblade and Phillips screwdriver useful, as indicated at the beginning of some procedures. If the server is locked, you will also need the server’s Allen wrench key.
Electrostatic Discharge (ESD) Precautions Follow these steps to avoid damage from ESD before working inside the server. 1. Shut down the server. 2. If the cable management arm is not in use, unplug all external cables except the power cord. 3. Touch the server’s metal case to discharge static electricity. 4. Unplug the power cord. 5. Slide the server open, remove it from the rack, and place it on a flat surface, preferably covered by an ESD mat. 6. Put on an ESD wrist strap. 7.
Hard Drive The original Xserve and Xserve (Slot Load) include four hard drive bays at the front of the server; Xserve (Cluster Node) includes just one drive bay. Drives come as modules attached to carriers; they are removed from or installed in the server as a unit. Note: Blank drive carriers, which may fill some of the hard drive bays, follow the same take-apart procedure as hard drives.
Procedure 1. Make sure the drive being replaced is not in use by any application and is not being shared by the server. (See the Mac OS X Server documentation for information about shared drives.) 2. Unmount the drive (by using the command-line tools or by dragging the disk icon to the Trash). 3. Press the handle on the front of the drive module so that the handle pops out. 4. Wait for the upper LED on the drive to go out. Then grasp the drive handle, and pull the drive module out of the server.
Opening the Server The server slides open from the front of the rack. The server’s top cover remains in place in the rack; the bottom housing (containing all internal components) should be placed on a sturdy, flat surface. Tools No tools are required for this procedure. You may, however, find a Phillips screwdriver useful in releasing the thumb screws in step 1 below. Preliminary Steps Before you begin this procedure, write down the server’s serial number located on the back panel.
Procedure 1. Release the two thumb screws at the front of the server. Note: The thumbscrews are captive and do not separate from the bottom housing. 2. Grasp the thumbscrews and slide the bottom housing forward part way to expose the two chassis levers. 3. While depressing both levers, pull the bottom housing all the way forward and remove it from the rack. Place the bottom housing on a sturdy, flat surface and ESD mat.
DIMMs Xserve has four memory slots. For the original Xserve, DIMMs must be PC2100 doubledata-rate (DDR) SDRAM (also known as DDR-266 DIMMs). For the Xserve (Slot Load) and Xserve (Cluster Node), DIMMs must be PC2700 DDR SDRAM (also known as DDR333 DIMMs). The DIMMs from older Macintosh computers are not compatible with Xserve. Tools No tools are required for this procedure. Preliminary Steps Before you begin, open the server and place the bottom housing on a sturdy, flat surface.
Procedure 1. Push down the ejectors on the DIMM slot. 2. Holding the DIMM by both top corners, lift it straight up out of the server. Warning: When removing or installing the DIMM, handle it only by the edges. Do not touch its connectors. Lift the DIMM straight up from the connector to remove it, and insert it straight down into the connector to install it. Do not rock the DIMM from side to side. Replacement Note: The DIMM is designed to fit into the slot only one way.
PCI or AGP Card In the original Xserve and Xserve (Slot Load), there are three slots available for PCI expansion cards. Two slots are on a riser card located at the back left corner of the logic board; an additional slot is on a riser card at the back right corner of the logic board. A PCI card that is 7 inches long can be installed in either riser card; a PCI card that is 12 inches long can be installed only in the dual-slot riser. In addition, an AGP card can be installed in the single-slot riser.
Part Location Card in Single-Slot Riser Card in Dual-Slot Riser Procedure for Card in Dual-Slot Riser 1. Release the thumb screw that secures the card fence to the back of the server. 2. If there are latches on either side of the riser, lift them slightly to release the riser from the logic board. 3. Pull the riser a short distance to the side to disconnect it, and then tilt the riser and attached card(s) up so that the card ports clear the enclosure. Remove the riser and card(s) from the server.
4. Disconnect the card(s) from the riser. Procedure for Card in Single-Slot Riser 1. Release the thumb screw that secures the card fence to the back of the server.
2. Pull the clip on the riser forward to release the riser from the logic board connector. 3. Disconnect the riser from the logic board and remove the riser and card from the server. 4. Disconnect the card from the riser.
Optical Drive, Xserve Tools The following tools are required for this procedure: • Flatblade screwdriver • Phillips screwdriver If you are removing the drive faceplate, you will also need a jeweler’s (#00) Phillips screwdriver. Preliminary Steps Before you begin, open the server and place the bottom housing on a sturdy, flat surface.
Procedure 1. Disconnect the optical drive cable from the optical drive. 2. Press in on the drive’s side bracket to release the drive from the chassis. 3. Lift up the bracket side of the drive and remove the drive from the server.
Note: If you are replacing the optical drive faceplate, do the following: 4. Open the optical drive tray by inserting a straightened paperclip into the manual eject hole on the front of the drive. 5. Turn the drive over so the bottom of the drive faces up. Using a small (#00) Phillips screwdriver, remove the two screws that secure the faceplate. 6. Using a small flat-blade screwdriver, release the latch on the far right end of the faceplate. 7. Remove the faceplate from the drive.
Replacement Note: Before installing the replacement drive, you must transfer the side bracket and the guide screws from the original drive to the replacement drive. 8. Remove the two screws that secure the side bracket to the original drive. 9. Remove the bracket and transfer it to the replacement drive, using the two screws from the original drive to secure the bracket. 10. Remove the two guide screws from the side of the original drive and install them on the replacement drive.
11. Align the corner of the replacement drive with the two guides in the chassis and press the drive down until you hear it snap into place. 12. Reconnect the optical drive cable to the drive.
Optical Drive, Xserve (Slot Load) Tools The only tool required for this procedure is a jeweler’s Phillips (#0) screwdriver. Preliminary Steps Before you begin, open the server and place the bottom housing on a sturdy, flat surface.
Procedure 1. Disconnect the optical drive cable. 2. Rotate the optical drive clip clockwise to release it. 3. Placing your thumbs on the tab on either side of the drive, carefully slide the drive back from the front bezel. Important: When removing or replacing the optical drive, be careful not to put pressure on the top of the drive or the top of the front bezel that covers the optical drive slot. 4. LIft the drive out of the server.
Replacement Note: Before installing the replacement drive, you must transfer the side brackets and the screws from the original drive to the replacement drive. 5. Remove the mounting screw for the left bracket and transfer the bracket to the new drive, using the same screw to secure it. 6. Remove the three mounting screws for the right bracket and transfer the bracket to the new drive, again using the same screws to secure it.
Optical Drive Cable Tools No tools are required for this procedure. Preliminary Steps Before you begin, open the server and place the bottom housing on a sturdy, flat surface.
Procedure 1. Disconnect the optical drive cable from the optical drive. 2. Disconnect the cable from the drive interconnect board and remove the cable from the server.
Heatsink, Xserve Note: This procedure applies to the original Xserve only. The heatsink for Xserve (Slot Load) and Xserve (Cluster Node) is part of the processor and should not be removed separately. Tools The only tool required for removing the heatsink is a Phillips screwdriver. Preliminary Steps Before you begin, open the server and place the bottom housing on a sturdy, flat surface.
Procedure 1. Release the latch on the heatsink duct from its slot, slide the cover away from the blower, and lift the end of the duct as shown. Remove the duct from the server. 2. Release the three captive screws that secure the heatsink. 3. Lift the heatsink straight up and remove it from the server.
WARNING: Whenever you remove the heatsink, before reinstalling it, you must replace the thermal grease on the MPU. To replace the grease, do the following: • Using the alcohol pad included with the replacement part or kit, clean off any used thermal grease from the MPU and the bottom of the heatsink. • Using the thermal grease included with the replacement part or kit, apply one dot of fresh grease to the middle of the MPU (or both MPUs if the server is a dual processor).
Processor, Xserve Tools No tools are required for this procedure. Preliminary Steps Before you begin, do the following: • Open the server and place the bottom housing on a sturdy, flat surface. • Remove the heatsink.
Procedure 1. Lift the processor straight up to disconnect it from the logic board. 2. Remove the processor from the server.
Processor, Xserve (Slot Load) and Xserve (Cluster Node) Tools The following tools are required for this procedure • Phillips screwdriver • installation guides (included with the processor service part) Preliminary Steps Before you begin, open the server and place the bottom housing on a sturdy, flat surface.
Procedure 1. Using a Phillips screwdriver, remove the three screws that mount the heatsink and processor to the logic board. 2. Carefully lift the heatsink and processor straight up and out of the server. Note: The heatsink is part of the processor; do not attempt to remove the heatsink from the processor.
Replacement Procedure 1. Insert the threaded end of one of the processor installation guides into the logic board standoff on the right side of the processor connector. Twist the guide until it screws into place. 2. Insert the second processor installation guide into the standoff on the left side of the processor connector and twist until the guide screws into place.
3. Carefully align the screw holes on the replacement heatsink and processor with the two guides, and lower the unit straight down over the guides until it touches the logic board. 4. To secure the processor to the logic board, press down gently on the top of the heatsink cover in the area directly over the processor's connector.
5. Remove the two installation guides. 6. Replace the three mounting screws and secure the processor and heatsink to the logic board.
Blowers Tools No tools are required for this procedure. Preliminary Steps Before you begin, open the server and place the bottom housing on a sturdy, flat surface.
Procedure 1. Disconnect the blower cable from the drive interconnect board. 2. Lift the blower straight up off its mounting pegs and remove it from the server.
ATA Controller Board Tools No tools are required for this procedure. Preliminary Steps Before you begin, do the following: • Open the server and place the bottom housing on a sturdy, flat surface. • If the unit is an original Xserve, remove the heatsink duct from the heatsink. Note: There is no heatsink duct on the Xserve (Slot Load) and Xserve (Cluster Node).
Procedure 1. Disconnect the blower cable nearest the ATA controller board. 2. Press in on both ends of the clip securing the right side of the ATA controller board and remove the clip from the server. Repeat for the clip on the left side of the board. 3. Lift the ATA controller board straight up to disconnect it from the drive interconnect and logic boards and remove the board from the server.
Note: When replacing the ATA controller board clips, orient them so that the long end of each clip points away from the middle of the server. Place the inside edge of the clip into the small notch and then snap down the outer edge of the clip.
Locking Mechanism Rod, Xserve Tools No tools are required for this procedure. Preliminary Steps Before you begin, open the server and place the bottom housing on a sturdy, flat surface.
Procedure 1. Pull back the latch to release the ribbed end of the locking mechanism rod. 2. Release the two clips on the sides of the front panel board, and pull the board back slightly from the front of the server. 3. Tilt up the ribbed end of the locking mechanism rod and remove the rod from the server.
Note: When replacing the locking mechanism rod, make sure the first rib in the nylon roller engages with the first slot in the plate below it.
Locking Mechanism Rod, Xserve (Slot Load) and Xserve (Cluster Node) Tools No tools are required for this procedure. Preliminary Steps Before you begin, open the server and place the bottom housing on a sturdy, flat surface.
Procedure 1. Pull back the latch to release the gear end of the locking mechanism rod. 2. Tilt up the gear end of the rod and remove the rod from the server. 3. If you are replacing the plastic gear on the end of the rod, slide the gear off the rod. Replacement Procedure 1. To install the gear, slide it onto the notched end of the locking rod, aligning the narrow end of the gear with the end of the rod. Note: Make sure the rib inside the gear engages with the notch in the rod.
2. To install the locking rod, insert the end of the rod with the key hole into the port on the front bezel. Note: Make sure the small circle on the front of the rod aligns with the “unlocked” symbol on the front bezel. 3. Pull back the latch that secures the rod, and gently press the rod down until it clicks into place.
Front Bezel, Xserve (Slot Load) and Xserve (Cluster Node) Tools The only tool required for this procedure is a Phillips screwdriver. Preliminary Steps Before you begin, open the server and place the bottom housing on a sturdy, flat surface. Note: Although the illustrations for this procedure are based on Xserve (Slot Load), the procedure is the same for Xserve (Cluster Node).
Procedure 1. Using a Phillips screwdriver, remove the screws that attach the two front bezel brackets to the server, and remove the brackets. 2. Remove the screw that attaches the top of the bezel to the server. 3. Gently pull the front bezel forward and remove it from the server. Important: When removing or replacing the bezel, be careful not to put pressure on the top of the bezel over the optical drive slot.
Replacement Procedure 1. Transfer the system identifier and power buttons from the original front bezel to the replacement bezel. 2. Remove the bottom row of light pipes from the light pipe assembly and insert them into the bottom row of light pipe holes in the replacement bezel. 3. Replace the front bezel on the server, matching ports/projections with openings. 4. Replace the screw that secures the top of the bezel to the server. 5. Replace the two bezel brackets and their mounting screws.
Front Buttons, Xserve (Slot Load) and Xserve (Cluster Node) Note: This procedure explains how to remove the power and system ID buttons from the front bezel. Tools The only tool required for this procedure is a Phillips screwdriver. Preliminary Steps Before you begin, do the following: • Open the server and place the bottom housing on a sturdy, flat surface. • Remove the front bezel.
Procedure 1. Holding the power button by the plastic tab, lift straight up and remove the button from the front bezel. 2. Repeat for the system ID button. Note: Take care in handling the buttons. The face of each button is loosely attached to the button LEDs and can easily separate. Replacement Note: Position the replacement buttons in the front bezel as illustrated.
Front Panel Board, Xserve Tools No tools are required for this procedure. Preliminary Steps Before you begin, do the following: • Open the server and place the bottom housing on a sturdy, flat surface. • Remove the locking mechanism.
Procedure 1. Disconnect the FireWire and front panel board cables from the board. 2. Lift the board out of the server.
Front Panel Board, Xserve (Slot Load) and Xserve (Cluster Node) Tools The only tool required for this procedure is a Phillips screwdriver. Preliminary Steps Before you begin, do the following: • Open the server and place the bottom housing on a sturdy, flat surface. • Remove the locking mechanism. • Remove the front bezel.
Procedure 1. Disconnect the FireWire and front panel board cables from the board. 2. Remove the two screws that mount the front panel board to the chassis. 3. Slide the board back and remove it from the server. Important: When replacing the front panel board, make sure the board slides under the black plastic cover of the light pipe.
Light Pipe, Xserve Tools No tools are required for this procedure. Preliminary Steps Before you begin, open the server and place the bottom housing on a sturdy, flat surface.
Procedure 1. Release the two clips on the sides of the front panel board, and pull the board back approximately 1.5 inches from the front of the server. 2. Remove the light pipe from the server. Replacement Note: When repositioning the light pipe against the inside front of the bezel, make sure the projections on the light pipe fit into the holes in the bezel. Then slide the panel board forward until it fits against the light pipe.
Light Pipe, Xserve (Slot Load) and Xserve (Cluster Node) Tools The following tools are required for this procedure: • Phillips screwdriver • flat-blade screwdriver Preliminary Steps Before you begin, do the following: • Open the server and place the bottom housing on a sturdy, flat surface. • Remove the front bezel.
Procedure 1. Using a flat-blade screwdriver, ease first one side and then the other side of the light pipe assembly from its opening in the front of the enclosure. 2. Remove the light pipe assembly from the server. Replacement Procedure 1. Remove the bottom row of light pipes from the light pipe assembly and insert them into the bottom row of light pipe holes in the front bezel.
2. Insert the rest of the light pipe assembly into its opening in the front of the enclosure. 3. Replace the front bezel on the server, matching ports/projections with openings. 4. Replace the screw that secures the top of the bezel to the server. 5. Replace the two bezel brackets and their mounting screws.
Front Panel Board Cable Tools No tools are required for this procedure. Preliminary Steps Before you begin, open the server and place the bottom housing on a sturdy, flat surface.
Procedure 1. Disconnect the front panel board cable from the front panel board. 2. Disconnect the front panel board cable from the drive interconnect board and remove the cable from the server.
FireWire Cable Tools No tools are required for this procedure. Preliminary Steps Before you begin, open the server and place the bottom housing on a sturdy, flat surface.
Procedure 1. Disconnect the FireWire cable from the front panel board. 2. Disconnect the FireWire cable from the drive interconnect board and remove the cable from the server.
Drive Interconnect Board Tools No tools are required for this procedure. You may, however, find a Phillips screwdriver useful in releasing the thumb screws in step 2 below.
Procedure 1. Disconnect the following cables from the drive interconnect board • optical drive cable • power supply cable • locking switch cable • front panel board cable • FireWire cable 2. Release the three thumb screws that secure the drive interconnect board to the chassis. 3. Lift the board slightly to clear the two mounting pegs near both ends of the board. 4. Pull the board back, tilt it up so that the connectors clear the chassis, and remove the board from the server.
Replacement Note: When installing the drive interconnect board, make sure the board engages with the two mounting pegs (#1 in the illustration below) and the three brackets (#2) on the chassis. Then press the board firmly toward the front of the server, and tighten the three thumbscrews (#3) that secure the board to the chassis.
Power Supply Tools No tools are required for this procedure. Preliminary Steps Before you begin, do the following: • Open the server and place the bottom housing on a sturdy, flat surface. • If the unit is an original Xserve, remove the heatsink duct from the heatsink. Note: There is no heatsink duct on the Xserve (Slot Load) and Xserve (Cluster Node).
Procedure 1. Release the locking latch on the power supply cable connector and disconnect the cable from the drive interconnect board. 2. Release the thumbscrew that secures the power supply to the chassis. Note: The thumbscrew is captive; you cannot remove it. 3. Grasp the metal flange of the power supply’s connector (on the left side) and lift up to disconnect the power supply from the logic board.
Battery Tools No tools are required for this procedure. You may, however, find a flatblade screwdriver useful in prying up the battery in step 1 below. Preliminary Steps Before you begin, open the server and place the bottom housing on a sturdy, flat surface.
Procedure 1. Pry up the battery from its holder. Note: You may first need to spread the two tabs on the holder slightly apart to release the battery. 2. Remove the battery from the server. Note: When replacing the battery, make sure the positive (+) end of the battery aligns with the + symbol on the battery holder.
Logic Board Tools No tools are required for this procedure. You may, however, find a Phillips screwdriver useful in releasing the thumb screw in step 1 below. Preliminary Steps Before you begin, open the server and remove the following. • DIMMs • PCI cards • processor • ATA controller board • power supply Note: The replacement logic board does not include the processor, memory DIMMs, or expansion cards. You must transfer these modules from the original board to the new one.
Procedure 1. Release the thumb screw that secures the logic board to the chassis. 2. Move the logic board forward and up slightly to release it from the four mounting pegs. 3. Tilt up the end of the logic board nearest the blowers so that the board ports clear the chassis. 4. Remove the board from the server. Replacement Note: Before installing the replacement logic board, check the heatsink thermal pad on the underside of the board. If the pad is covered with a protective film, remove it.
Important: When replacing the logic board, make sure the board’s connectors fit through the appropriate openings in the server’s back panel. Take special care to fit the clear plastic system identifier button through its opening. (The system identifier button is located low on the back panel, to the left of center.) After installing a replacement logic board, be sure to transfer any PCI cards, risers, and DIMMs to the new board.
Service Source Troubleshooting Xserve © 2003 Apple Computer, Inc. All rights reserved.
General Information What’s New Rack-Mounted Server Xserve is designed to be mounted in a rack. Once the server is installed in the rack, you can slide it open from the front to exchange or add parts. For more information, see “Opening the Server” in the Take Apart chapter. Server Identifier Light/Button The identifier light on the server’s front panel turns on when internal sensors or a systems administrator detects a problem with the server.
Diagnostics Four types of diagnostics are available for Xserve: • status lights • remote monitoring • Apple Hardware Test • Apple Service Diagnostic For more information, see “Diagnostic Tools” below. DDR Memory The server’s logic board includes four memory slots, which accept double data rate (DDR) SDRAM DIMMs. Memory can be expanded to a maximum of 2 gigabytes. DIMMs used in the original Xserve must fit these specifications: • PC2100 DDR SDRAM, also known as DDR-266 • 2.
port that supports RS-232 connection. There is also one FireWire 400 port on the front of the server. System administrators or service providers can connect a laptop computer or terminal to the serial port and then use command-line tools to change settings on the server. The connection requires a serial cable with these specifications: • DB9 connector • 8-bit • no parity • 1 stop bit • 9600 kbps Note: For a diagram of the ports location, see “External Views” in the Views chapter.
Block Diagram Processor Module PowerPC G4 Microprocessor L3 Cache Main Logic Board DIMM Slots Ethernet PHY U2 memory controller U2PCI and Memory bus bridge Controller and PCI Bus Bridge Network Card Slot Boot ROM Ethernet Port Firewire PHY Firewire Port 1 Firewire PHY Firewire Port 3 Firewire Port 2 PCI Slots PCI Bridge PCI Bridge ATA Interface ATA Interface USB Port 1 USB Port 2 Apple Drive Module Connectors Internal Optical Drive Connector 4 - Xserve Troubleshooting EIDE Bus KeyLargo I/
Resetting the PMU on the Logic Board The PMU (Power Management Unit) is a microcontroller chip that controls all power functions for the server. The PMU is a computer within a computer. Its function is to: • tell the server to turn on, turn off, sleep, wake, idle, etc. • manage system resets from various commands. • maintain parameter RAM (PRAM). • manage the real-time clock. Important: Be very careful when handling the logic board.
Power Supply Verification To power on, the server’s logic board requires a “trickle” power of +5V. If the system fails to power on, first reset the PMU. Then follow the procedure outlined below to determine whether the problem is related to the power supply. Note: To verify the power supply, you need a volt meter. When connecting the volt meter leads to specific pins, make sure the power supply remains securely plugged into its connector on the logic board.
4. Check to see if the power supply fan is spinning. If it is not, replace the power supply. If it is spinning, go to the next step. 5. Connect the black lead of the volt meter to pin 14 of the power supply connector; connect the red lead to pin 9. The volt meter should measure approximately +3.3V. If you do not get a reading of +3.3V, recheck the volt meter connections and measure the voltage again. If voltage is still not present, replace the power supply. If you do measure +3.
Xserve (Slot Load and Cluster Node): Entering Firmware Boot Commands From the Front Panel You can use the system identifier button on the Xserve (Slot Load) and Xserve (Cluster Node) server’s front panel to initiate a limited number of firmware commands to the system without connecting a keyboard or monitor to the server. The commands are listed below; you enter each command with a combination of the system identifier button and a specific light on the front panel.
Status Lights The server’s status lights are shown in the figure and table below. While the illustration is based on the original Xserve, the callouts for the status lights are accurate for all models.
Remote Monitoring Server Monitor is an application installed with Xserve system software that helps you monitor the following information about the server: • installed operating system • drive status and activity • power supply operation • enclosure and processor temperature • blower operation • security • network operation You can also use Server Monitor to get logs of activity and Apple System Profiler reports on remote servers.
All Error Code Lists are included in the Service Diagnostics Matrix, Knowledge Base article 112125. You can also access this matrix by clicking the Service Diagnostics rollover link under any of the product areas on the Service Source home page. Apple Service Diagnostic Apple Service Diagnostic replaces MacTest Pro for Xserve. It tests memory, logic board and components, hard drives, Ethernet cards, and video cards, and complements both Apple Hardware Test and Server Monitor.
Symptom Charts How to Use the Symptom Charts The Symptom Charts included in this chapter will help you diagnose specific symptoms related to the product. Because cures are listed on the charts in the order of most likely solution, try the cures in the order presented. Verify whether or not the product continues to exhibit the symptom. If the symptom persists, try the next cure. Note: If a cure instructs you to replace a module, reinstall the original module before you proceed to the next cure.
16. Replace the logic board. Note: When installing the new logic board, make sure the ports and ID button on the back of the board align with the openings in the chassis. Memory error message appears on the screen 1. Reseat the DIMMs. 2. Verify that the correct SDRAM DIMMs are installed. 3. Run Apple Hardware Test. If the test finds bad memory, replace the DIMMs one at a time and test until all bad DIMMs are replaced with known-good modules. Flashing question mark appears on the screen 1.
4. Reseat the front panel board and cable connectors. 5. Replace the front panel board. 6. Replace the logic board. Note: When installing the new logic board, make sure the ports and ID button on the back of the board align with the openings in the chassis. System shuts down intermittently 1. Verify that the system ID button on the back of the logic board aligns with the opening in the chassis back panel. If it does not, realign the logic board. 2. Make sure the power cord is plugged in firmly. 3.
Error Lights Note: Error lights flash before system software loads. Server activity lights flash two times at startup Two flashes mean that no RAM is installed or detected. 1. If no DIMM is present, install a known-good DIMM in the top slot and try again. 2. Reseat the DIMMs. 3. Run Apple Hardware Test. If the test finds bad memory, replace the DIMMs one at a time and test until all bad DIMMs are replaced with known-good modules. 4. Replace the logic board.
Video Screen is black, but activity lights flash at startup, drive operates, blowers are running, and power LED is lit 1. Verify that the system ID button on the back of the logic board aligns with the opening in the chassis back panel. If it does not, realign the logic board. 2. Reseat the ATA controller board. 3. Check video card connections and connector pins. 4. Test with a known-good monitor. Replace the monitor, if necessary. 5. Remove all third-party devices. 6. Reseat the video card. 7.
Hard Drive Flashing question mark appears on the screen 1. Reseat the drive module in the first drive bay. 2. Start up from the system restore CD and check to see if the hard drive shows up on the desktop. If it does, go to step 3. If it does not, go to step 5. 3. Run Disk Utility. Update the driver and restart the server. 4. Reinstall system software using the system restore CD that came with the server. 5. Replace the drive module in the first drive bay. 6. Replace the ATA controller board.
Internal Optical Drive Optical drive icon does not appear on the desktop 1. If the server is locked, unlock it. 2. Check to see if the optical drive is listed in Apple System Profiler. If it is, go to step 3. If it is not, go to step 9. 3. Verify the correct type of disc is being used. Try using a known-good disc. 4. Try cleaning the disc. (It may not mount if it is dirty or scratched.) 5. If there is a disc stuck in the drive, eject it by restarting the server while holding down the mouse button. 6.
Xserve (Slot Load): Disc will not eject 1. If the server is locked, unlock it. 2. Verify the disc is not in use. 3. Drag the disc icon to the trash or select it and press Command-E. 4. Restart the server while holding down the mouse button. 5. Verify that the bezel over the slot is not bent. If it is, gently bend it back into position. 6. Reseat the optical drive cable at both connectors. 7. Replace the optical drive cable. 8. Replace the optical drive.
FireWire Devices FireWire device connected to port on back panel: No external FireWire device icon appears on the desktop 1. If the server is locked, unlock it. 2. Verify that the FireWire device is turned on and the FireWire cable is securely connected to the device and the server. 3. If the device requires external power, make sure it is plugged in. 4. Check that the FireWire device is listed in Apple System Profiler. If it is, go to step 5. If it is not, go to step 6. 5.
Network Problems Server cannot be seen on network 1. Open the Network system preference and select the Ethernet option. Verify that you can now see devices on the network. 2. Boot the server from the Net-install CD. Go to another computer on the same subnet and start Server Assistant. If the server can be seen, the server hardware should be functioning correctly. Check the software configuration on the server, or reinstall and reconfigure the server. 3. Try a known-good Ethernet cable. 4.
Miscellaneous ID buttons/lights on the back and front of the server are always on, even though Server Monitor reports no problems Make sure the ports and ID button on the back of the logic board align correctly with the openings in the chassis. Original Xserve: Security light on the front of the server is always on, even though the server is unlocked. Or service light turns on and off, even though Server Monitor does not report any problems.
Service Source Views Xserve © 2003 Apple Computer, Inc. All rights reserved.
Internal Views, Xserve Exploded View Battery 922-4028 Logic Board 661-2660 Dual-Slot Riser Card 922-5140 Video Card, PCI 661-2679 Gigabit Ethernet Card 661-2677 AGP/PCI Single-Slot Riser Card 922-5166 AGP/AGP Single-Slot Riser Card 922-5250 Power Supply 661-2664 DIMM Slots (4) 256 MB DDR DIMM 661-2658 512 MB DDR DIMM 661-2659 1 GHz Uni Processor 661-2661 Drive Interconnect Board 922-5167 Blowers 922-5268 FireWire Cable 922-5152 CD Drive 661-2663 Optical Drive Cable 922-5151 ATA Controller Board 922-51
Logic Board Serial Port USB Ports System Identifier Button FireWire Ports Ethernet Port Dual-Slot Riser Connector SingleSlot Riser Connector PMU Reset Button Reset Button Interrupt Button Power Supply Connector DIMM Slots Processor Connector Bridge Board Connectors 2 - Xserve Views Internal Views, Xserve
External Views, Xserve Front Panel Ethernet Card Link Light CD Drive Open Button FireWire Port System Identifier Button/Light System Activity Lights Enclosure Lock Power Button /Light CD Drive Apple Drive Modules Bays (4) Securing Thumbscrews (2) Built-In Ethernet Link Light Drive Module Status Light Drive Module Activity Light Back Panel System Identifier Button/Light Gigabit Ethernet Port(s) PCI Card Expansion Slots (3) Power Socket FireWire Ports (2) USB Ports (2) External Views, Xserve Mon
Internal Views, Xserve (Slot Load) Exploded View Battery 922-4028 Logic Board 661-2741 Dual-Slot Riser Card 922-5847 Video Card, PCI 661-2679 Gigabit Ethernet Card 661-2832 AGP/PCI Single-Slot Riser Card 922-5166 AGP/AGP Single-Slot Riser Card 922-5250 Power Supply 661-2835 DIMM Slots (4) 256 MB DDR DIMM 661-2726 512 MB DDR DIMM 661-2727 1.33 GHz Uni Processor 661-2833 1.
Logic Board Serial Port USB Ports FireWire Ports System Identifier Button Ethernet Port SingleSlot Riser Connector Dual-Slot Riser Connector PMU Reset Button Reset Button Interrupt Button Power Supply Connector DIMM Slots Processor Connector Bridge Board Connectors Internal Views, Xserve (Slot Load) Xserve Views - 5
External Views, Xserve (Slot Load) Front Panel System Activity Lights Ethernet Card Link Light Slot-Load Optical Drive FireWire 400 Port System Identifier Button/Light Enclosure Lock and Status Light Drive Module Status Light Power Button /Light Apple Drive Module (4 Bays) Securing Thumbscrews (2) Built-in Ethernet Link Light Drive Module Activity Light Back Panel System Identifier Button/Light Gigabit Ethernet Port(s) PCI Card Expansion Slots (3) Power Socket FireWire 800 Ports (2) USB Ports (2
Internal Views, Xserve (Cluster Node) Exploded View Battery 922-4028 Dual-Slot Riser Card 922-5847 DIMM Slots (4) 256 MB DDR DIMM 661-2726 512 MB DDR DIMM 661-2727 Logic Board 661-2741 Power Supply 661-2835 1.
Logic Board Serial Port USB Ports FireWire Ports System Identifier Button Ethernet Port SingleSlot Riser Connector Dual-Slot Riser Connector PMU Reset Button Reset Button Interrupt Button Power Supply Connector DIMM Slots Processor Connector Bridge Board Connectors 8 - Xserve Views Internal Views, Xserve (Cluster Node)
External Views, Xserve (Cluster Node) Front Panel System Activity Lights Built-in Ethernet Link Light FireWire 400 Port System Identifier Button/Light Enclosure Lock and Status Light Power Button /Light Drive Module Status Light Securing Thumbscrews (2) Drive Module Activity Light Back Panel System Identifier Button/Light Gigabit Ethernet Port PCI Card Expansion Slots (2) Power Socket FireWire 800 Ports (2) USB Ports (2) Serial Console Port External Views, Xserve (Cluster Node) Xserve Views - 9
Service Source Verification of Basic Services Xserve © 2003 Apple Computer, Inc. All rights reserved.
How to Start Up From CD Starting up Xserve from a CD-ROM disc is useful when you need to: • install the server's operating system • install a software component • isolate hardware versus software issues Preliminary Steps To start up the server from a CD, you must have physical access to it. You cannot do this remotely. If you need to start up Xserve using a connected keyboard, you must connect both a keyboard and monitor before beginning. Procedure 1. Make sure Xserve is turned off. 2. Turn on Xserve.
How to Verify the Server's IP and Hardware (MAC) Address Verifying the server’s IP and hardware address is useful as a first step in remote software installation or to verify Xserve hardware and basic network connectivity. Preliminary Steps Make sure that the server you want to remotely install software on is started up from the Installation CD. Procedure Option A (Server Assistant) 1. Open Server Assistant from Admin system. 2. Select the "Install Mac OS X Server SW" option.
How to Discover Xserve on Your Network Follow the steps outlined below to remotely administer Xserve. Note: This procedure verifies basic connectivity to Xserve, which can help isolate hardware versus software issues. Preliminary Steps Make sure that you are doing these steps on an Admin computer with Mac OS X 10.1.5 Server or Mac OS X 10.1.5 remote admin utilities. You must be logged in to that computer with an Admin account.
Note: To continue, the first 8 characters of the Xserve serial number are required to authenticate. The password is case-sensitive. If you encounter difficulty using this password please see technical document 61644: "Xserve: Initial Password Is Case Sensitive". Option C As an alternative to using Server Assistant, the following procedure may be performed using the Terminal application. 1. Open the Terminal application on the Admin computer. 2. Type: cd/System/Library/ServerSetup 3. Press Return. 4.
How to Check for Local Hard Drive Issues Follow the steps outlined below if you suspect issues with Xserve's hard disk, and you have physical access to the server. Preliminary Steps In order to follow these steps, you must have physical access to Xserve. You cannot perform this procedure remotely. A keyboard and monitor must be connected to the server before you begin.
How to Remotely Check for Hard Drive Issues Follow the steps outlined below if you suspect issues with Xserve's hard disk, and you do not have physical access to the server. Preliminary Steps You must have the server's IP address and Admin (or root) password before performing this procedure. Xserve's default password is the first 8 characters of its serial number. Procedure 1. Log in to Xserve. 2. Type: mount 3. Press Return. A list of volumes that are available to the file system appears.
How to Erase (Reformat) a Local Xserve Hard Drive Follow the steps outlined below if you wish to reformat Xserve's hard disk and you have physical access to the server. Preliminary Steps In order to follow these steps, you must have physical access to Xserve. You cannot perform this procedure remotely. A keyboard and monitor must be connected to the server before you begin. Procedure 1. Start up Xserve from the Installation CD first and open Disk Utility from the first Installation screen. 2.
How to Remotely Erase (Reformat) a Hard Drive Follow the steps outlined below if you wish to reformat Xserve's hard disk, and you do not have physical access to the server. Preliminary Steps You must have the server's IP address and Admin (or root) password before performing this procedure. Xserve's default password is the first 8 characters of its serial number. Procedure 1. Log in to Xserve. 2. Type: mount 3. Press Return. A list of volumes that are available to the file system appears.
How to Verify Xserve Is Accepting Connections There are several methods for determining if Xserve has successfully started up and is providing basic services. Using a terminal connection to accomplish this task provides the most flexibility. Note: You will not be able to perform this procedure if the Xserve is not fully started up. Preliminary Steps You must have the IP address and an Admin (or root) password of the server you wish to start up before performing this procedure. Procedure 1.
How to Connect Using Server Monitor Follow the steps outlined below any time you need to verify that you can remotely administer Xserve. Prelimary Steps You must have the IP address and an Admin (or root) password of the Xserve you wish to start up before performing this procedure. Note: Xserve's default password is the first 8 characters of its serial number. Procedure 1. From the Admin computer, open Server Monitor (/Applications/Utilities). 2.
How to Start up the Server Using an External Drive Starting up Xserve from an external drive is useful when you need to run diagnostics or isolate internal CD-ROM drive issues. Preliminary Steps In order to start up the server from an external drive, you must have: • another FireWire drive or system, such as an external FireWire hard drive, or a Macintosh computer that is capable of starting up using Target Disk Mode (for example a PowerBook or iBook) • a version of Xserve software (Mac OS X Server 10.1.
3. Type: bless -folder /Volumes/
Troubleshooting Authentication Issues Symptom A warning message such as “authenticity of host cannot be established” appears when you attempt to log in to Xserve remotely. Solution Delete and then recreate the authentication keys related to the specific host. Important: • Make sure you have the IP address and Admin login information for the appropriate Xserve. • Verify the first 8 characters of the serial number that correspond to the appropriate Xserve.
Error message example: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @@@@@@@@@@@@@@@@@@@@ @ WARNING: POSSIBLE DNS SPOOFING DETECTED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @@@@@@@@@@@@@@@@@@@@ The RSA host key for xxxxxx has changed, and the key for the according IP address 17.xxx.xxx.xx is unchanged. This could either mean that DNS SPOOFING is happening or the IP address for the host and its host key have changed at the same time. Offending key for IP in /Users/admin/.
How to Delete and Recreate Authentication Keys 1. Open TextEdit on the Admin computer. Located in /Applications/ 2. Open the file: ~/.ssh/known_hosts or ~/.ssh/known_hosts2 All fingerprints from previous connections appear. 3. Locate host name or IP address of the server within the text you want to connect to using ssh. This is the on the line number mentioned in the warning message. 4. Delete the line containing the host name or IP address.
