LG VX8350 Service Manual page 115
Dual band cdma (pcs/cellular/w/gps) cdma mobile phone
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Also See for VX8350:
- User manual (110 pages) ,
- Quick start manual (8 pages) ,
- Specifications (2 pages)
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VX8350
4.4.3 Checking Bluetooth In/Out and Power Supply Circuit
Press "##5473784236368" + "SEND"+ "000000" in Phone idle state
Press "5" FCC Test
Press "3" Bluetooth FCC
Press "8" DUT mode
Spectrum analyzer setting, Oscilloscope setting
TP1 Check C304
TP2 Check Pin10 of U302
TP3 Check Pin14 of U302
TP4 Check Pin9 of U302
Graph 1.1
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Start
Similar to bellow Graph 1.1?
NO
+2.6V_MSMP2 is OK?
YES
+2.8V_BT is High OK?
YES
Similar to bellow Graph 1.2?
NO
Replace U302
Checking Flow
Checking Flow
YES
NO
NO
YES
Graph 1.2
114
Check Bluetooth Intenna or
Antenna Matching Network
The Problem may be Logic Part
Refer to Logic Troubleshoot
The Problem may be PMIC
Refer to PMIC and Replace U401
The Problem may be RF Part
Refer to RX Troubleshoot
LGE Internal Use Only
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