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Manafacture: IBM File size: 226.68 kb File name: 92p1836.pdf Language of manual:

Before servicing an IBM ThinkPad products, be sure to review the safety information on the hardware maintenance manual of the ThinkPad computer. FRU replacement notices This section contains notices related to removing and replacing parts. Read this section carefully before replacing any FRU. Screw notices Loose screws can cause a reliability problem. In IBM ThinkPad computer, this problem is addressed with special nylon-coated screws that have the following characteristics: v They maintain tight connections. v They do not easily come loose, even with shock or vibration. v They are harder to tighten. v They should be used only once. Do the following when you service this machine: v Keep the screw kit (for the P/N, see “Parts list” on page 14) in your tool bag. v Always use new screws. v Use a torque screwdriver if you have one. © Copyright IBM Corp. 2003 Tighten screws as follows: Plastic to plastic Turn an additional 90 degrees after the screw head touches the surface of the plastic part: 90 degrees more (Cross-section) Logic card to plastic Turn an additional 180 degrees after the screw head touches the surface of the logic card: 180 degrees more (Cross-section) v Torque driver If you have a torque driver, refer to the “Torque” column for each step. v Make sure you use the correct screw. If you have a torque screwdriver, tighten all screws firmly to the torque shown in the table. Never use a screw that you removed. Use a new one. Make sure the screws are tightened firmly. Removing and replacing a FRU This section presents directions and drawings for use in removing and replacing a FRU. Be sure to observe the following general rules: 1. Do not try to service any computer unless you have been trained and certified. An untrained person runs the risk of damaging parts. 2. Before replacing any FRU, review “FRU replacement notices” on page 1. 3. Begin by removing any FRUs that have to be removed before the failing FRU. Any such FRUs are listed at the top of the page. Remove them in the order in which they are listed. 4. Follow the correct sequence in the steps for removing the FRU, as indicated in the drawings by the numbers in square callouts. 5. When turning a screw to replace a FRU, turn it in the direction indicated by the arrow in the drawing. 6. When removing the FRU, move it in the direction indicated by the arrow in the drawing. 7. To put the new FRU in place, reverse the removal procedure and follow any notes that pertain to replacement. 8. When replacing a FRU, use the correct screw as shown in the procedures. DANGER Before removing any FRU, power off the computer, unplug all power cords from electrical outlets, remove the battery pack, and then disconnect any interconnecting cables. Attention: Before the computer is powered on after FRU replacement, make sure that all screws, springs, and other small parts are in place and are not loose inside the computer. Verify this by shaking the computer gently and listening for rattling sounds. Metallic parts or metal flakes can cause electrical short circuits. 1010 ThinkPad Dock PCI cover Before replacing the PCI cover: There are two types of ThinkPad Dock, as follows: ThinkPad Dock: FRU no. 08N1546 (PCI cover: FRU no. 05K6246) ThinkPad Dock with extension plate: FRU no. 08N1537 (PCI cover: FRU no. 08N7317) Confirm the FRU no. of the ThinkPad Dock first and choose the proper PCI cover FRU for the ThinkPad Dock you are servicing. Note: The following illustration shows how to remove the PCI cover of ThinkPad Dock (FRU no. 08N1546). Do the same to remove the PCI cover of ThinkPad Dock with extension plate (FRU no. 08N1537). 1 2 1 (Bottom view) 1020 ThinkPad Dock top cover Note This section is only for the ThinkPad Dock (FRU no. 08N1546). The top cover and screw kit for ThinkPad Dock (FRU no. 12P4143) is not available for the ThinkPad Dock with extension plate (FRU no. 08N1537) . 1 (Rear view) Step Screw (quantity) Torque 1. M2.5 . 4.8 mm (2) 0.392 Nm (4 kgfcm) (continued) 2 2 2 2 2 2 (Bottom view) Step Screw (quantity) Torque 2. M2.5 . 4.8 mm (8) 0.392 Nm (4 kgfcm) (continued) Make sure that the system lock key A is set to the Unlock position. Release the front latches in step 3, and then remove the top cover 4. For step 5, see the inside view, shown in the circle. 54 3 A When replacing the top cover, do the following: v Make sure that the springs are placed correctly. (continued) Make sure that the device release lever is seated correctly. Make sure that the release button works correctly. 2010 ThinkPad Dock II PCI cover 1 2 1 (Bottom view) 2020 ThinkPad Dock II top cover 1 1 1 (Rear view) Step Screw (quantity) Torque 1. M2.5 . 4.8 mm (3) 0.392 Nm (4 kgfcm) 2 2 2 2 Step Screw (quantity) Torque 2. M2.5 . 4.8 mm (4) 0.392 Nm (4 kgfcm) (continued) 3 3 3 3 (Bottom view) Step Screw (quantity) Torque 3. M2.5 . 4.8 mm (6) 0.392 Nm (4 kgfcm) (continued) Make sure that the system lock key A. is set to the Unlock position. Release the front latches in step 4, and then rem...

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