LG H990ds - LTE DRx Signal Path (Bands B7, B38, B40, B41)

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reserved. Only training and service purposes
LGE Internal Use Only
3. TROUBLE SHOOTING
Checking DRX RF signal path (B7/B38/B40/B41)
3.5.5 LTE PART – LTE B7/B38/B40/B41 DRx
Checking Flow Image
Check TP1
Signal exist?
START
Check SW1100 Soldering
YES
NO
Check TP2
Signal exist?
YES
Check FL1200 Soldering
NO
Check TP3/TP4/TP5
Signal exist?
YES
Check U1206 Soldering
NO
Check TP6
Signal exist?
YES
Check B40 FL1206
Soldering
NO
Check TP7
Signal exist?
YES
Check B40 FL1209
Soldering
NO
BOTTOM
TP1 (DRx Common)
SW1100
U1206
TP2
(B7/B38/B40/B41
DRX)
FL1206
FL1209
FL1208
FL1207
FL1211
TP3
(B40 DRX)
TP4
(B38/B41 DRX)
TP5
(B7 DRX)
TP6
(B40 DRX)
TP7
(B40 DRX)
TP9
(B38/B41 DRX)
TP8
(B38/B41 DRX)
TP10
(B7 DRX)
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