Chapter 5. Removing A Fru Or Cru; Service Tools; General Guidelines - Lenovo 100e Chromebook Gen 4 Hardware Maintenance Manual

Chapter 5. Removing a FRU or CRU

Service tools

The following table lists tools for servicing Lenovo computers. Tools with a cross mark are needed for serving
the product models as described by this publication. Prepare them before you service the product.
Table 4. Service tools
Service tool and consumable
Screw driver (Phillips head) (PH1/PH0)
Screw driver (Torx head) (T5)
Screw driver (Torx head) (T30)
Pry tool 1
Tweezers (conductive)
Tweezers (isolated)
Suction cup
Hexagonal socket
Thermal interface materials
Acetate tape
Polyamide tape
Mylar tape
Electrical tape
Double-sided tape
Conductive tape
Eraser
Heat gun
Brown brush
Note: Hexagonal sockets are used to remove antenna connectors.

General guidelines

When removing or replacing a FRU, ensure that you observe the following general guidelines:
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. Begin by removing any FRUs that have to be removed before replacing the failing FRU. Any such FRUs
are listed at the beginning of each FRU replacement procedure. Remove them in the order in which they
are listed.
3. Follow the correct sequence in the steps for removing a FRU, as shown in the illustrations by the
numbers in square callouts.
4. When removing a FRU, move it in the direction as shown by the arrow in the illustration.
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