Check pin 1 at U107
Check if there is any major difference referring
To Figure 4.1.1 (c), (d)
Start
Check signal path between pin 1
and 4 at U101
.
NO
YES
YES
Check pin 13at U 107
Check if there is any major difference referring
To Figure 4.1.1 (c), (d)
NO
LNA is O.K Check the Rx I/Q Signal
Rx TEST SETUP (H HP)
- Test C hannel: 384
- Test Band : US C ellular
- SID:
2004
- Sect or Power: - 30 dB m Spectrum Analyzer Setting
Oscilloscope Setting
Pin 9 and 15 are High?
YES
Replace U107
Check PMIC and MSMP
NO
-43-
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Only for training and serving purposes
LGE Internal Use Only
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Содержание VX5400
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Страница 135: ...2 Block and Circuit Diagram 135 Internal Use Only Z 3 X B O X C O M ...
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Страница 138: ...Z 3 X B O X C O M CDMA ant DCN Tx DCN Rx PCS Tx PCS Rx GPS Internal Use Only 138 ...
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Страница 147: ...3 Part List 147 Internal Use Only Z 3 X B O X C O M ...
Страница 160: ...4 Components Layout 160 Z 3 X B O X C O M ...
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Страница 169: ...5 BGA Pin MAP 169 Z 3 X B O X C O M ...
Страница 170: ...1 U300 MSM6100 90NM EUSY0152202 USED NOT USED 170 Z 3 X B O X C O M ...
Страница 171: ...2 U300 HYC0SEE0MF1P 6SH0E EUSY0322101 USED NOT USED NC 171 Z 3 X B O X C O M ...