Overview Of The Chromebook Usb Repair Shim; Creating The Repair Shim - Lenovo ThinkPad X131e Chromebook Hardware Maintenance Manual

a. Non-ThinkPad devices
b. Printer, mouse, and other external devices
c. Battery pack
d. Hard disk drive or solid-state drive
e. External drive
f. Memory module installed in slot
g. PC Cards
4. Turn on the computer.
5. Determine whether the problem has been solved.
6. If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.
7. If the problem remains, replace the following FRUs one at a time (do not replace a nondefective FRU):
a. System board
b. LCD assembly

Overview of the Chromebook USB repair shim

This section provides information about the recovery solution on the Chrome OS
using the Chromebook USB repair shim (hereafter referred to as the repair shim).
The repair shim is a bootable device that is required to service the Chromebook computer. The repair
shim is used for the following purposes:
• Diagnose problems and restore the system to the factory default settings
• Refresh the system with the latest firmware and software
The repair shim is not necessary when a Customer Replaceable Unit (CRU) is replaced. If a non-CRU is
broken, or there is a strong suspicion that a particular non-CRU is defective, it can be replaced before using
the repair shim. Otherwise, the repair shim must be used before any non-CRU is replaced.
The following is the list of CRUs for a Chromebook computer:
• ac power adapter
• Battery pack
• Bottom slot cover
• Keyboard
• Memory module
• Trackpoint cap
For CRU definition, see "Locating FRUs and CRUs" on page 24.

Creating the repair shim

Lenovo service technicians need to download the repair shim image from the Lenovo Support Web site to
create a repair shim. A Lenovo service credential is required to download the image.
Notes:
• To create the repair shim, a USB device with at least 4 gigabyte (GB) of storage is required. The required
USB storage capacity depends on the size of the recovery image.
• You might also need a recovery tool to create the repair shim. To prevent potential performance risks or
unexpected failure, it is recommended that you use the Win32 Disk Imager to create the repair shim.
• Ensure that you create the repair shim using the latest version of the repair shim image. If you use an
earlier version, it might cause the repair process to fail.
b ( "1030 Memory modules" on page 35)
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operating system by
.
Chapter 3 Important service information
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