Nokia 8208, Руководство по обслуживанию

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RM-384
RF Troubleshooting
Issue1 Company Confidential Page 4-19
Copyright © 2008 Nokia. All rights reserved.
PCS1900 RX Path Troubleshooting
Troubleshooting flow
Check DC test point in
the Table 22.
Is it ok ?
Check TP11 in the Table
24.
Is it ok?
Check TP10 in the Table
24.
Is it ok?
Check TP9 in the Table
24.
Is it ok?
Check TP8 in the Table
24.
Is it ok?
Check TP7 in the Table
24.
Is it ok?
Check DC test point in
the Table 22. ( TP6)
Is it ok ?
Cell Rx path test
procedure
1. Check U403 (PMIC)
2. Check soldering point of the peripheral
circuit
3. Change defect component
1. Check F203
2. Check soldering point of the peripheral
circuit
3. Change defect component
1. Check U205(RFRxxxx)
2. Check soldering point of the peripheral
circuit
3. Change defect component
1. Check DPX103
2. Check soldering point of the peripheral
circuit
3. Change defect component
1. Check DPX101
2. Check soldering point of the peripheral
circuit
3. Change defect component
1. Check Carkit
2. Check soldering point of the peripheral
circuit
3. Change defect component
1. Check U205 (RFRXXXX)
2. Check soldering point of the peripheral
circuit
3. Change defect component
No
Yes
Yes
No
No
Yes
Yes
Yes
Yes
No
No
No
No
Yes
End