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4. TROUBLE SHOOTING
ͽͶ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑ΟΝΪ
107/140
4. TROUBLE SHOOTING
A condition is good?
START
Check of ear_jack condition
NO
YES
CHECKING FLOW
FM_radio will
work properly
Check condition of
matching components
(L201, C213, C214)
A condition is good?
NO
YES
Give the additory
solder in
L201, C213, C214
Replace CN201
Check Bias Voltage
VDD_FMR
YES
NO
Replace
U100
START
Check of earless condition
Check condition of
CN201 connection
YES
A condition is good?
YES
NO
Replace CN201
NO
Replace U200
A condition is good?
Check Bias Voltage(VBAT)
MUIC(U200)
Check Input & output signal at MUIC
(USW_DP,USW_DM,HSO_L,HSO_R)
YES
NO
Replace U100
A condition is good?
4.17 FM Radio Trouble
NO
ͽͶ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑ΟΝΪ
107/140
4. TROUBLE SHOOTING
A condition is good?
START
Check of ear_jack condition
NO
YES
CHECKING FLOW
FM_radio will
work properly
Check condition of
matching components
(L201, C213, C214)
A condition is good?
NO
YES
Give the additory
solder in
L201, C213, C214
Replace CN201
Check Bias Voltage
VDD_FMR
YES
NO
Replace
U100
START
Check of earless condition
Check condition of
CN201 connection
YES
A condition is good?
YES
NO
Replace CN201
NO
Replace U200
A condition is good?
Check Bias Voltage(VBAT)
MUIC(U200)
Check Input & output signal at MUIC
(USW_DP,USW_DM,HSO_L,HSO_R)
YES
NO
Replace U100
A condition is good?
4.17 FM Radio Trouble
NO