Troubleshooting; Power-On Failure - Huawei H60-L04 Simplified Maintenance Manual

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H60-L04 Simplified Maintenance Manual

Before you repair a L10, restore it to its factory settings to ensure that the failure is not caused

by environmental factors or incorrect functional settings. Before the restoration, remember to

back up important data. Faulty PCBAs removed from the L10 phones at common service

centers must be kept clean and complete for advanced service centers to repair them properly.

Symptom

After your install the battery and press and hold the power key, the phone fails to start and

display the Home screen.

Solution

Check whether the problem is caused by a battery fault.

Check whether the battery is deformed and properly fits in the battery compartment.

Check whether the contacts on the battery are smudged or rusted. If yes, clean the

contacts.

Use the multimeter to test the ground impedance of the battery's BSI.

The normal impedance is 10 kohms. If the value on the multimeter deviates greatly and

the voltage between the battery's positive and negative terminals is 0 V, charge the

battery for about 30 minutes. Install the charged battery into the phone and power on the

phone. If the phone fails to start, the power-on failure is caused by the battery fault.

Replace the faulty battery for free if the phone is still in its warranty period.

Issue 1.0 (2014-09-04)

Huawei Proprietary and Confidential

10 Troubleshooting

Troubleshooting

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