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Manual de usuario Lenovo, modelo ThinkPad 11e Chromebook

Fabricar: Lenovo
Tamaño del archivo: 18.63 mb
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Idioma del manual:en

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Resumen del manual


5. The Stress test will run for 10 minutes and then the Final Assembly Test and Pack (FATP) section will start.
This section includes the independent tests for each component. Follow the instructions on the screen
to start the tests. For information about the factory test items, see “Factory test items” on page 24.
6. If the factory test items reveal a defective component, turn off the computer, disconnect the ac power
adapter, and then replace the defective component. For information about the replacement procedure,
see Chapter 6 “Removing or replacing a FRU” on page 45.
7. Turn on the write-protect function. See “Removing and reinstalling the write-protect screw” on page 22.
8. Turn on the computer. The computer enters the factory-test-image environment again. It is
recommended that you run Stress Test and FATP Tests to ensure that new components function
correctly.
Note: It is not necessary to turn off the write-protect function again if additional components must
be replaced.
9. Run the GoogleRequiredTests. If the tests finish successfully, all data stored on the computer will be
deleted and the computer will be turned off. If the GoogleRequiredTests fails, refer to the common
mistakes that lead to GoogleRequiredTests failure in “Factory test items” on page 24.
Note: If any test is marked as failed, the final process cannot be completed. The final process can be
forced to end by pressing f. Do not force the final process to end when a component fails the test. Force
the final process to end only when the test has to be bypassed because it cannot be performed.
10. After the repair process finishes, the built-in battery is disabled. The system is in a clean out-of-box
state. In order to turn on the computer, attach the ac power adapter to the power connector on the
computer first. If applicable, customers must re-enroll the system for enterprise enrollment.
Factory test items
After the system enters the factory-test-image environment, factory test items will run. The factory test
process contains the following three types of tests:
• Stress Test: The Stress Test is designed to test how the system functions under stress by running the
maximum workload applications. The Stress Test includes the test of memory, microprocessor, and
graphics card. The test takes about 10 minutes to finish.
• FATP Test: The FATP Test is designed to test the individual component to verify its function, such as
the TPM, display, audio, camera, keyboard, and other components. It is recommended that you run all
the FATP Test items. Some test items might require an HDMI monitor or an SD card. If the devices are
not available, the tests can be bypassed, but with the overall test marked as failed. This will require the
finalized step of the GoogleRequiredTests to be forced in order to complete the servicing of the computer
(see step 9 in “Using the repair shim” on page 23).
• GoogleRequiredTests: GoogleRequiredTests checks the system status and helps reset the system back
to the factory-default settings. If any tests fails, the system cannot be finalized. The following items are
some common mistakes that lead to GoogleRequiredTests failure:
– HWID mismatch: Each Chromebook has a known hardware configuration. Each configuration is
assigned an HWID. HWID mismatch can be caused by using unauthorized parts, or missing parts.
For information about HWID, see “Hardware identity” on page 42.
If the write-protect function is not turned off before recovering the computer with the repair shim, it
will also cause HWID mismatch. For instructions on how to turn off the write-protect function, see
“Removing and reinstalling the write-protect screw” on page 22.
– Write-protect function is off: System cannot be finalized until the write-protect function is turned
back on.
24
Hardware Maintenance Manual


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