LG VX8500 Service Manual page 45
Dual band cdma pcs/cellular/w/gps cdma mobile phone
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Also See for VX8500:
- Quick start manual (13 pages) ,
- Datasheet (2 pages) ,
- Guía de inicio rápido (12 pages)
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VX8500
4.1.1.4 Checking RF Signal path (Mobile S/W, Diplexer, Duplexer)
Test Point
U100. Pin2
U102. Pin6
C105, L104
DP100. Pin3
L112, C130
L123, C141
LG Electronics Inc.
C101, L101
Checking Flow
Check U100 Pin 2
Check if there is
Detected Signal?
Any Major Difference
◆ Refer to Graph 4.1.1(e)
Detected Signal?
Check U102 Pin 6
Check if there is
Detected Signal?
Any Major Difference
◆ Refer to Graph 4.1.1(f)
Detected Signal?
Check DP100 Pin 3
Check if there is
Detected Signal?
Any Major Difference
◆ Refer to Graph 4.1.1(g)
Detected Signal?
RF Signal Path is OK.
See next Page to check
RX I/Q data signal.
53
No
Changing U100
Yes
No
Check C100, L101
Yes
No
Changing U102
Yes
No
Check C105,L104
Yes
No
Changing DP100
Yes
No
Check
L112, C130,
L123, C141
Yes
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