Symptom 2
LCD no display or partially
Check LCM display block and Hot bar area, whether it has any component broken,
short-circuit, solering failure or foreign body inside.
Replace the bad component.
Symptom 3
No incoming call ring tone or weakness
Check the Speaker block , whether it has any component broken, short-circuit or
foreign body inside.
Replace the bad component.
Symptom 4
No sidetone or no voice from caller or weakness
Check the Rceiver block, whether it has any component broken, short-circuit,
solering failure or foreign body inside.
Replace the bad component.
Symptom 5
The listener can’t hear voice
Check the Microphone block, whether it has any component broken, short-circuit,
solering failure or foreign body inside.
Replace the bad component.
Symptom 6
No charging function
Check the Charge block, whether it has any component broken, short-circuit,
foreign body inside.
Replace the bad component.
Symptom 7
Vibration no function or noisily
Check the Vibrator block, whether it has any component broken, short-circuit,
foreign body inside.
Replace the bad component.
Symptom 8
Keypad function failure
Check the Keypad scan block, whether it has any component broken, short-circuit,
foreign body inside.
Replace the bad component.
Symptom 9
No SIM display after SIM card plugged in
Check SIM card block, whether it has any component broken, short-circuit, foreign
body inside.
Replace the bad component.
Symptom 10
Abnormal time
Check clock, Backup Cap block, whether it has any component broken, short-
circuit, foreign body, water marks or dusts inside.
Replace the bad component.
