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A177 L2 Service Manual

Content

1 Common fault analysis and troubleshooting flowchart

1.1 Structural parts fault1.2 Fail to start up1.3 No ring1.4 LCD display abnormal1.5 Charging abnormal1.6 Does not recognize SIM card1.7 No echo, fail to record (but there has ring tone)1.8 Key bad1.9 No receiver1.10 Headphone radio silent1.11 External audio radio silent1.12 No signal1.13 Fait to recognize T card1.14 Headphone bad1.15 Camera shooting abnormal

A177 L2 Service Manual

1.1 Unable to power on the handset

A177 L2 Service Manual

1.2 No ring tone

A177 L2 Service Manual 1.3 LCD display fault

A177 L2 Service Manual 1.4 Charging fault

A177 L2 Service Manual 1.5 Camera fault

A177 L2 Service Manual 1.6 Fail to identify SIM card

A177 L2 Service Manual 1.7 MIC fault

A177 L2 Service Manual 1.8 Keypad fault

A177 L2 Service Manual 1.9 Receiver fault

A177 L2 Service Manual 1.10 Vibrate fault

A177 L2 Service Manual 1.11 FM fault

A177 L2 Service Manual 1.12 No signal

A177 L2 Service Manual 1.13 Failure to identify T-flash card

A177 L2 Service Manual 1.14 Earphone fault

A177 L2 Service Manual 1.15 Unable to use USB

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A177 L2 Service Manual