LG H990ds Service Manual page 28

3.5.5 LTE PART – LTE B7/B38/B40/B41 DRx
Checking DRX RF signal path (B7/B38/B40/B41)
START
Check TP1
Signal exist?
YES
Check TP2
Signal exist?
YES
Check TP3/TP4/TP5
Signal exist?
YES
Check TP6
Signal exist?
YES
Check TP7
Signal exist?
YES
LGE Internal Use Only
Checking Flow
Check SW1100 Soldering
NO
Check FL1200 Soldering
NO
Check U1206 Soldering
NO
Check B40 FL1206
Soldering
NO
Check B40 FL1209
Soldering
NO
Image
BOTTOM
TP2
(B7/B38/B40/B41
DRX)
TP3
(B40 DRX)
U1206
FL1206
FL1209
TP6
TP7
(B40 DRX)
(B40 DRX)
28
3. TROUBLE SHOOTING
SW1100
TP1 (DRx Common)
TP5
(B7 DRX)
TP10
(B7 DRX)
TP4
(B38/B41 DRX)
TP8
(B38/B41 DRX)
TP9
(B38/B41 DRX)
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