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