IBM ThinkPad DOCK PORT REPLICATOR Service Manual

Part Number: 92P1836

Important

This publication contains product-specific parts information for IBM ThinkPad Dock, ThinkPad Dock II, ThinkPad Port Replicator, ThinkPad Mini Dock, and ThinkPad Port Replicator II products.

This publication is intended for trained service personnel who are familiar with ThinkPad products.

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.

Tighten screws as follows:

v Plastic to plastic

Turn an additional 90 degrees after the screw head touches the surface of the plastic part:

90 degrees more

(Cross-section)

v 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: v ThinkPad Dock: FRU no. 08N1546 (PCI cover: FRU no.

05K6246)

v 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).

(Bottom view)

+ 11 hidden pages