LG VX8500 Service Manual page 48

Dual band cdma pcs/cellular/w/gps cdma mobile phone
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VX8500
4.1.1.5 Checking Rx I/Q data
Check Pin7 (RX0_QM)
Pin8 (RX0_QP)
Pin9 (RX0_IM)
Pin10 (RX0_IP)
Check if there is
Any Major Difference
◆ Refer to Graph 4.1.1(h,i)
Check Pin7 (RX0_QM)
Pin8 (RX0_QP)
Pin9 (RX0_IM)
Pin10 (RX0_IP)
Check if there is
Any Major Difference
◆ Refer to Graph 4.1.1(h,i)
LG Electronics Inc.
Test Point
Checking Flow
No
Similar?
Yes
Re-download the
Software & Calibrate
No
Similar?
Yes
All DCN RX check is completed
if the phone still does not work,
change the board.
5 6
U107 Pin7 (RX0_QM)
Pin8 (RX0_QP)
Pin9 (RX0_IM)
Pin10 (RX0_IP)
Replace U107
Replace Board

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