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Appendix.
Rx Flow Chart & Solution
Goto Block 2 Test 1 !!
GSM Handsets Lab.
2-A) Check Pin 2. Using Oscilloscope
Yes
>
Voltatge
2 V ?
2-B) Check Pin 5. Using Oscilloscope
Yes
Pin 5. High ?
2-C) Check Pin 1. Using Oscilloscope
Yes
Pin 1. High ?
No
Replace Backup Battery
Check Placement of U903
No
EN Line Check Short? (Using Multi Meter)
No
Replace U903
56
If it has not problem
Replace U500
2-B Test!!
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