Ê Remove the left side cover, the system fan and the cross-beam, and fold out the power supply unit as described in section “General Purposes” on page 13.
Ê Remove all cables from the connector panel.
Ê Lay the server on the right side on a table.
Ê Remove all cables which may be connected to the system board.
Ê Remove all installed controller (for description see the Options Guide). Take note of the slots of the controllers and the cabling.
Figure 21: Removing the screws
Ê Remove the 10 screws from the system board.
Ê Lift the system board slightly using the marked socket of PCI slot. In this way you lift the system board out of the centering rings of the spacer bolts.
Ê Carefully remove the system board (take the board with both hands) from the casing at a slight angle. This allows you to pull the connectors out of the connector panel.
Replacement Routines Replacing the System Board
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CAUTION!Always take the system board with both hands! Figure 22 shows the handling by the example of a sample board.
Never lift the system board one-sided or at the heat sink, because the solder connections between the socket and the board come under tension and increase the risk of damage and malfunction!
Don’t damage the EMI springs to comply with applicable EMC regula- tions and satisfy cooling requirements and fire protection measures.
Figure 22: Handling of the board (example)
Ê Place the removed system board on an antistatic surface.
Ê Unscrew the four screws of the heat sink and remove it (for description see the Technical Manual for the system board D1859).
Replacing the System Board Replacement Routines
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CAUTION!Processors are components which are extremely sensitive to electro- static discharges and must be handled with caution. After taking a processor out of its protective wrapper, set it on an insulated antistatic surface with the smooth side down. Never slide a processor over a surface.
Ê Open the locking lever and remove the processor (for description see the Technical Manual for the system board D1859) and store it savely to avoid any damage.
Ê Remove the memory modules (for description see the Technical Manual for the system board D1859).
Ê Remove the retaining plate on the lower surface of the system board in a secure way to be able to use it for the new board. Do not destroy the system board!
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CAUTION!Do not use any tooling between the retaining plate and the system board to separate the two parts. This would destroy the system board.
Figure 23: Removing the retaining plate
Ê Use a pin from the component side of the board to press onto the threaded bolts of the retaining plate and press the plate away from the board. Remove the plate (figure 23).
The easiest way is to use a ballpoint or a little screwdriver which is larger than the diameter of the bolt’s winding but nor larger than the hole in the board.
Replacement Routines Replacing the System Board
Ê In case the selfsticking synthetic foil remains at the system board it should be easy to remove it and stick it to the retaining plate again.
Ê Unpack the new system board, place it on an antistatic surface and check the settings (for description see the Technical Manual for the system board).
Figure 24: Mounting the retaining plate
Ê Remove the protective foil (if available) from the retaining plate (1).
Ê Place the retaining plate on the lower surface of the system board by fitting the threaded bolts of the plate (2) through the location holes (3) on the system board (4). Apply slight pressure to this plate and it will stick to the system board.
Ê Turn the system board carefully.
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2
3
Replacing the System Board Replacement Routines
Figure 25: Socket with protective cover (1) and pin1 mark (2)
Ê Remove the protective plastic cover (1) from the processor socket and fit it onto the socket of the defective board which will be sent back to spares.
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Returned system boards without this cover probably have to be scrapped (figure 26).Figure 26: Socket with and/or without protective cover
Ê Open the locking lever and swing the processor holder on (for description see the Technical Manual for the system board D1859).
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CAUTION!The processor can only be installed in one particular direction. Pay attention to the location mark on one of the corners (pin 1). Do not use force to press it into the socket to avoid damaging the pins or the processor.
Ê Position the processor over the socket, and press it carefully into the socket. Observe the pin1 mark (figure 25/2). Do not touch the surface of the processor!
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1
Replacement Routines Replacing the System Board
Ê Swing the processor holder in its initial position and close the locking lever. Open and close the lever slowly until it snaps in the hook.
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CAUTION!The processor holder must fall down by itself. Do not close with force, because soldering pads may be damaged.
Ê Check the thermal grease on the heat sink. It may not show any spots and contamination.
Ê Carefully put the heat sink on the processor socket, paying attention to the correct position (for description see the Technical Manual for the system board D1859).
Ê Tighten the four screws crosswise if possible with a torque of 0.6 NM (figure 27).
Figure 27: Fastening the heat sink
Follow the following steps:
1. Turn screw no.1 two/three turns, then will be no tension on the processor when tightening the next screws.
2. Tighten screws no. 2, 3 and 4 in this order, according to the figure 27. 3. Tighten screw no.1 finally.
Ê Check the heat sink: a small piece paper should fit between the springs (a).
Ê Mount the memory modules onto the new system board (for description see the Technical Manual for the system board D1859).
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1
3
4
Replacing the System Board Replacement Routines
Ê Insert the system board into the housing by holding it at a slight angle and sliding the connectors into the connector panel.
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CAUTION!Always take the system board with both hands! See figure 22 on page 31.
Never lift the system board one-sided or at the heat sink, because the solder connections between the socket and the board come under tension and increase the risk of damage and malfunction!
Don’t damage the EMI springs to comply with applicable EMC regula- tions and satisfy cooling requirements and fire protection measures.
Figure 28: Adjusting the system board
Ê Carefully place the system board into the housing. Make sure there are no cables jammed under the system board.
Ê Adjust the system board. If necessary adjust the position of the system board with a gentle twisting motion.
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When the system board is in the right position the centering rings engage in the holes indicated.Replacement Routines Replacing the System Board
Ê Reconnect all cables to the system board (see cabling in the appendix and D1859 sticker).
Ê Insert all controller in the relevant slots and reconnect the cables (for description see Options Guide).
Ê Swing the power supply back, re-mount the cross-beam and the system fan, and return the server to its original installation location.
Ê Close the server (for a detailed description see the Options Guide) and reconnect the power plug.
Ê Connect all external cables.
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CAUTION!After installing the new system board, it is necessary to update the BIOS to ensure proper operation (for description see the BIOS Manual).