Nokia 8208, Руководство по обслуживанию

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RM-384
RF Troubleshooting
Page 4-14 Company Confidential Issue1
Copyright © 2008 Nokia. All rights reserved.
PCS1900 TX Path Troubleshooting
Troubleshooting flow
Check DC test point in
the Table 17.
( TP1,TP2,TP3)
Is it ok ?
Check TP12 in the Table
19.
Is it ok?
Check TP11 in the Table
19.
Is it ok?
Check TP10 in the Table
19.
Is it ok?
Check TP9 in the Table
19.
Is it ok?
Check TP8 in the Table
19.
Is it ok?
Check DC test point in
the Table 17.
( TP4,TP5,TP6)
Is it ok ?
PCS Tx path test
procedure
1. Check U403 (PMIC)
2. Check soldering point of the peripheral
circuit
3. Change defect component
1. Check DPX103 (ACMD-7402)
2. Check soldering point of the peripheral
circuit
3. Change defect component
1. Check U207 (CP0402A0836AL)
2. Check soldering point of the peripheral
circuit
3. Change defect component
1. Check U204 (AWT6308R)
2. Check soldering point of the peripheral
circuit
3. Change defect component
1. Check SAW202 (B9014)
2. Check soldering point of the peripheral
circuit
3. Change defect component
1. Check U202 (RFTXXXX)
2. Check soldering point of the peripheral
circuit
3. Change defect component
1. Check U301 (MSMXXXX)
2. Check soldering point of the peripheral
circuit
3. Change defect component
No
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
No
No
No
No
Yes
Check TP7 in the Table
19.
Is it ok?
No
1. Check DPX101 (LFD21859)
2. Check soldering point of the peripheral
circuit
3. Change defect component
Check TP13 in the Table
19.
Is it ok?
No
1. Check Carkit
2. Check soldering point of the peripheral
circuit
3. Change defect component
Yes
End