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LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
6. Trouble shooting
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6.14 RF Transmitter path Troubleshooting
START
Check
Transmitter Circuit
1. Set HP8960 as below
Active Cell (GPRS)
62ch, 5level (TCH)
62ch, -60dBm (BCH)
2. Establish Spectrum Analyzer
& Oscilloscope
Check
PAM Circuit
YES
YES
After download S/W,
Calibrate it.
General Circuits
Troubleshooting
YES
YES
Check
Control signal of
FEM
Replace
PCB
Fig 12 Troubleshooting flowchart of RF Transmitter path
Содержание KC550
Страница 1: ...Date May 2008 Issue 1 0 Service Manual Model KC550 Service Manual KC550 Internal Use Only ...
Страница 129: ... 130 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...
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