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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
Thanks
A177 L2 Service Manual